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Nguy6nTriTd, Hoing QuangTudn, Nguy6nV0 Hr)ng 38

"Nguy6n Vin Hirng, Pham Xudn Dat, Nguy6n XuAn Huy 43

V0 Dr,ic Hi6u, Nguy6n L6m T6i 46

Tren Nhdt D0ng 5l

DioC6ng Binh 56

Nguy6nThiThu Nga,V0Trong Quang 61

Nguy6n Xu6n Bdng 66 Nguy6n NgocThinh 70 Trinh DtlcThdng, Nguy6n QudcVdn 76 Dinh Ddng Quang, HoengThi Kh6nh Van 81

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DdngThiThu Hi6n, Nguy6n ManhThudng 109

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Nguy6n Qudn Thdng, Biri Dtic Ndng, Hodng Manh Khang 1 1 6

BiriDt?cNdng,TridnAnh 86o, Nguy6n DuyThio 120

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TrdnTudn Minh, Nguy6n Quang Huy 140

V0 Hodng Hiip 144 Tr6n Nam Hr.rng 148 Nguy6nTriTii,Ho)ngQuangTudn, Nguy6nV0 Hnng 152

V0 Ngoc Quang, Ludng 5i Hoeng,ThdnTh6 Hirng 1 55

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GS.TS Chien Ming Wang

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V0 AnhTuAn f63

Le Minh Sdn,Tr6n 86 Vi6t 167

V0VinTudn 17O Dio vi6t Doirn, Nguy6n T)iTidn 174

Nguy6n Phan Duy 183

Nguy6n Phan Duy 186 Trinh LC Hr)ng, Nguy6n Thi Thu Nga I 89

\uy6n Xu6n MEn, Nguy6n Duy6n Phong, 193

Nguy6n Ngoc Hu6, Pham Dtlc Hinh r: \Eo(Anh, Cao Chu Quang, Nguy6n Qu6c BAo 196

-* Orang Hoc, Nguy6nThirnh L6,TdngThi Hanh 199

3an9 Ven Ki6n, V6Trong Hirng, D6 Ngoc Anh 2O3

V0Trong Hidu,DimTrongThdng 208

&rn Trong Thdng, V0 Trong Hidu, Le H6n9 Hei 21 I

!n \qocThny, Nguy6nVU Hirng, Ho)ngVinTudn 222

\uy6n Duy€n Phong, Nguy6n Xu6n M6n, 225

Pankratrenko A.N, Pham Thi Y6n Nguy6n ChiTho, Nguy6n XuAn Bing

LC Hai Dudng, Nguyan TriT6

\gul€n C6ng Nghi, LA Anh Tudn, V0 Dinh Ldi

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Trang 4

RESEARCH 6 Ddng C6ng Thuet, Dinh Ngoc Hidu

D)o NgocTh6 Luc,Trudng euang Hai

Dio Ngoc Thd Lrrc, Trudng euang Hai

LC Minh Son Nguy6nThanh Phong Nguy6n Th)nh Trung, Nguyen Trong Phrl6c Ng6 Khdnh Tidn, Nguyan Trong Phudc Ki6u Thd Chinh, Tren Quang D[ng, Kidu Th6 Son, Ludng Dinh Kh6nh

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Nguy6nTriTS, Hoing QuangTudn, Nguy6nV0 Hirng 38

Nguy6n Vdn Htrng, Pham Xudn Dat, Nguy6n XuAn Huy 43

V0 D0c Hidu, Nguy6n L6m T6i 46

TriAn Nhdt D0ng 51 DioC6ng B)nh 56 Nguy6nThiThu Nga,V0Trong Quang 61

Nguy6n XuAn Bing 66 Nguy6n NgocThirnh 70 Trinh DtlcThdng, Nguy6n Qu6cVin 76 Dinh D;ng Quang, HoAng Thi Kh5nh VAn 8l

V0 Ngoc Quang, Ludng Si Hoang 85 VoThanh Ludng, LA Quang Huy 91

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Trinh DfcThXng, Nguy6n V0 Vi6t

Le Hoing Long, Nguy6nThiThu Nga,V0 Ngoc Quang 105

Ddng Thi Thu Hidn, Nguy6n Manh Thtrdng 1 09

Nguy6n Thi Thu Nga 1 1 2 Nguy6n Quiin Thing, Biri Drtc Ndng, Hodng Manh Khang I 1 6

BiriDtlcNdng,TrdnAnh Bdo, Nguy6n DuyTh6o 120

Pham Xu6n Hoin, D6 Vdn An, Trdn Ngoc Son 1 24

Ph?m Qudc Hda, Pham Tidn Dat, Trdn Thd Vin

Hoeng Xuan Ludng, Nguy6nThi Cdm Nhung

Phan ThAnh Trung

TriAn Tudn Minh, Nguy6n Quang Huy

V0 HoAng HiCp Trdn Nam Hung Nguy6n TriTii, Ho;ng Quang Tudn, Nguy6n V0 Hirng

V0 Ngoc Quang, Ludng Si Ho;ng, Thdn Th6 Hing

129 132 135 140 144 148 152 155

AnalytiGl l\40delto Predictthe DriftGpacityofSlenderSteel-tiberReinforcedC0ncreteshearWall based on ACI 318and K(l 2012 Desiqn

(odes-Valida-tion with txpedmental Results Effective Strut AndTie l\4odel tor RC Deep Beam Design - Part 1 : Model selection Effective strutAndTie Model tor RC Deep Eeam Design - Part2: Experimentforverification

An appl katlon ofvietnamese traditional fi ne a rt i n interior design of contemporary houses Application ofBurgess method tofor resource leveling in construction project

Ihe reductional vibration ofwater in tower strudures to hamoni( loading The redudional vibration of structures using tuned liquid damperwith screen l4athematical m0del to assess environmental impactr during the construction phase fortwofoundation solutions: Gst-in-drilled-h0le piles and Pretensioned spun high strength concrete piles

A study on contact detection algorith ms for discrete €lement method Experiment on seismic behavior of reinforced c0ncrete L- shaped column using shaking ta ble Appl ication of the Monte - (arlo method for (a lculation a nd selection felevant blast resishnt level of ilefense structures

Ana lyze influen(e 0f the height of buildings when design the bts a nten, inshllation tn the city Application of the comparative method in medankal engineering

Homogeniation ofa cracked dry porous medium: case of non-interacting ftd6

ldentilication of equiva lent fixed - (0nstra int depth for a frame-pipe structure by onse(utive s0lving offorward problem Solution 0fassembly houses from c0ntaine6 for military cmps to d€al with (limate dange and sea level rise Research proposed to improveaccessforommunityairport

The effuct fact0rs 0f the reeng ineering a nd eq u itization of m ilitary (onstruction conorations Dynamicanalysis forfluid reservoir underan explosive wave impad

Dynam ics Analysis for Industria I Construction Structu re under [xplosive Wave I mpact Eehavior of deep tunnek in anisotropic medium

Building test norms for hot-appliedjoint and ftck sealants in (ement concrete pavements

The effect of unreinforced masonry-infill pa nels on the performance of reinforced concrete frames under horizonhl static loads Applkation ofbs'l139steel scffolding s),stem in qui*eredion p€destrian bridgedesign inVietNam

Interface €lements for numeriGl simulation ofmasonrv structures 50me improved ve6ion ofdlfferential evoluti0n algorithm and apliGti0ns ofs0lving structur€ optimization problem (0mbine six sigma with conquas to evaluate the quality ofc0nstructi0n work

Analysis and processing 0fmulti-temporal satellite imagery data in combination with fi€ld survey data in ordert0 interpret and veritthe

a(aetion-erosion Dro(esses at J5

The transi€nt response a nalysis 0f laminat€d composite shell subjected to underwater blast loading Vibration analysis 0f d0uble beams-cables-columns-trusses complex system under a convoy of moving loads 0ynamk analysis on development of plastic hinge in plane fame with basement subjected to surface blast loading Assessement of prestressed va lues in rod bolts 0n the stability oftransported tunnels

Analysis 0f composite steel-(oncrete beams with partial shear (0nnection Behavior of deep tunnels in saturated anisotropi( poro€lastic medium Reseanh and calculation ofpenetration depth ofthe bulletproofbombs on concrete structure used particle floW (ode Investigation on liquid reservoirunderan explosivewav€consideringtheimpactofthe surfacewave

4l NIEDUNC 7.2017

Trang 5

V0 AnhTudn

I LC Minh Sdn,Trdn Bii Viot

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vu vdn Tuan Diro vidt Dodn, Nguy6n Tdi Tidn

Dio vi6t Do)n, Nguy6n Xu6n L6p

Nguy6n Phan Duy Nguy6n Phan Duy Trinh LA Hing, Nguy6n Thi Thu Nga

Nguy6n Xu6n Min, Nguy6n Duy6n Phong,

Nguy6n Ngoc HuA, Pham Dic Hinh

Si llggc Anh, Cao Chu Quang, Nguy6n Qu6c 86o

Qng Vdn Ki€n, V6 Trong Hi.rng, D6 Ngoc Anh

V0 Trong Hidu, Dam Trong Thdng

fEmTrongThing,V0Trong Hidu, LA Hdng H6i

Nguy6n Vin Tti

S.l, Tdng Vdn L6m, Nguy6n Tidn Nam

lgi l€gcThn, Nguydn V0 Hirng, Hoing Vdn Tudn

Nguy6n Duydn Phong, Nguy6n Xu6n Man,

Pankratrenko A.N, Pham Thi Y6n

Nguy6n ChiTho, Nguy6n Xu6n Birng

L6 H6i Dtlong, Nguy6n TriTd l,lguy€n Cdng Nghi, LA Anh Tudn, V0 Dinh Ldi

Nguy6n Vdn Hidu Nguy6n NgocTri Hu)'nh, H6lhanhTri,

Nguy6n Phung AnhToin, Nguy6n Kh6nh Son

V0 D)nh Hudng, LA Anh Tudn

TriT5, Nguy6n Nhr.t Hirng, Nguy6n Lam Tdi

Nguy6nTriTd, LA Hai Dudng

Kidu D6 Trung KiCn, LC Minh Sdn,

Nguy6n V0 UyAn Nhi, D6 Quang Minh

Nguy6n Huy Hi6p, Mai Ddng Nh6n

Tr6n H6ng Hdi, L6 Quang Trung, Hd Ngoc Khoa

L6 Minh Hing,Tdng Thi Hqnh

Nguy6n V6Th6n9, D6Vin Manh

Phan Quang Minh, BiiThiCn Lam

Nguy6n Trdn Hidu, V! Anh Tudn

Nguy6n 86oThinh

1 59

1 63 [xperimental study and numeriol simulation 0n mechankal behaviours ofcoral sand in lruong 5a lsland

167 Researching to produc€ ultra high performan(e onffete with fine aggregate

17 O Num€ri(al anallais forthe effect ofvacuum deep well on tunnel (onstruction in soft - soil

17 4 Factors affect the deformation in rock mass surrounding cir(ulartunnels

179 study 0n determining the nability distance fiom tunnel face to fault

1 83 A study on deflection ofgfip reinforced concrete b€am undershort-term and long-term loading in differentworking shges

1 86 Physi(al-mechaniel properties offiber conoete using fiber recycled from steel wire rope

1 89 Soil erosion assessment using univeBal soil lossEuation (usle) a csestudyin huong hoa distri4 QuangTri province

1 93 Effect ofblasting 0n the stress state in the rock mass around the tunnel

196 'Generating the artifi(ial a(eleration with response spectra mathing using Wavelet adjustmenf'

199 5tudyand establish subsiden(eforeost models in a(ordanc€ with anal),sis andforecastsoftground subsiden(eftom m0nitoring results

203 Research on the effuct ofblaning vibration on the adjacent existing tunnel during tunnel excavation by blasting method

208 Study 0n determination ofthe sp€cific (onsumpti0n ofexplosives a(ording to the md fragmentation index and the average rock size after blasting

21 1 Research on determination method ofthe mck fragmentation index in blasting

21 4 Dynamic (akulation of Elasto-plastic Planar trame Acording to Genenlized (lough Model in Consideration ofGeometric Nonlinearity ofStuctures and Effect ofAxial Forc on Planic timit Stah of(ross - Sections

21a 50luti0n to enhanG the effiden(y in application oftechnology ement soils to improve soft soils

222 Researd on effect ofiddenc angle on blasting wave pressure ading 0n structur€s by software ansys aut0dyn 3d

225 Calculation ofsupporting shell in (onnecting-tunnel between two metrostations in romplex geological conditions based on balancestate"supporting

shell-rockmas

229 Research estimating the stength oflightweight c0mposite fortitude and proposing usage oiteria

232 Research project(alculation ofthe steel fiame covered with tarpaulin (ombined sandbags

235 Researding about p0ssibility ofexplosion pressurc redudion ofelastic materials by experiment

2 38 Modern methods ofspectum density estimations for airfield pavements level

241 Study on durability performance ofsupersulfated cement in marine environment

246 5D0F method for identifiing natural fuquency, mode shape, and damping ratio ofstuctures from measurement data

250 Building automated s0ftware for (akulating and simulating the viability ofbuildings based on G15 technology

254 Research on the impact ofthe particular exposure (oncerning publi( strudural component (onceming environmental intervention to the environment affecting debt in soil

258 Using an adivity nano-silic (si0-2) prepared from rice husk ash t0 fabricte the high ompressive stength mortar

261 Reseach 0n fast calculation method to determine effed ofdeep excvation on strip footing ofadjacent building

264 Researdes about lateral pressure ofselfconsolidating (onoete

267 An analysis ofbuilt-up land dDnge detertion in Hanoi using multitemporal remote sensing data

27 1 Inspecting and evaluating cracking Guses ofreinforced (onsete slab 0fhighris€ building

27 4 Study and proprosal ofgust loading factort0 Gkulate wind load on fiame-wall buildings according toVietnamese standardICVN 2737:1995

278 Studythe behaviorofsteel-(oncrete composite beam by experimentand numedcal simulation

28 1 Capturing The Value oflhe"Righg'to Build High-rise Buildings in Vietnam: Real E tate Devel0pe6 and Planne6 in Ho (hi Minh City

Office:37 Le Dai Hanh, Hanoi

Editorial Board: 04.397 407 44; 09833821 88

Design:Thac Cuong, Quoc Khanh Publication: No: 372IGP-BTTTT date 5th, July/201 6 Account:1 13000001 172

and Com,mercial Branch, Hai Ba Trung, Hanoi

Printed in: Nhandan printing HCMC limited Company

Editorial commission:

Le Quang Hung, Ph.D (Chairman of Editorial commission)

fusoc Prof Pham Duy Hoa, Ph.D tusoc Prof Nguyen MinhTam, Ph.D

Tran Van Khoi Ph.D Assoc Prof Ho Ngoc Khoa, Ph.D

Scientific commission:

Prof Nguyen Van Lien, Sc.D

(Chairman of Scientific Board)

Prof Phan Quang Minh, Ph.D

Secretary of Scientific Counci

Prof Nguyen Thi Kim Thai, Ph.D Prof Nguyen Huu Dung, Ph.D Prof Cao DuyTien, Ph.D

Prof Hiroshi Takahashi Ph.D

Prof Chien Ming Wang, Ph.D Prof Ryoichi Fukagawa, Ph.D Ass Prof Nguyen QuocThong, Ph.D

Trang 6

Tinh todn v6 ch6ng doqn him nOi giCua hai ga metro trong di6u kign dla ch6t phuc-tqp tr6n co s& nghiOn c*u trgng inai cdn bing-",j" h6 ,lv6

ch6ng-kh6i ddt de"

on balance state"supporting shell-rock mass"

Ngdy sura bdi: 221 612017

Ngiry ch6'p nh6n ddng: 0617120t7

tolt tAt'

Giii quydt vdn dd giao th6ng d6 thi ld mdt vdn tld hdt srtc thdi srt, dic bi6t ln tht d6

xay dti"g c6c tuy6n tau dicn tr6n cao vi tdu diQn ngdm Tr6n thric t6 khi xay drrng

c6c tuy6n tiu di6n ngdm di qua c6c khu di tich lich sir, m{t d0 dnn s6 cao, c6 nhidu

cdng trinh b6 mat, thi phrtong ph6p thi c6ng hd kh6ng kh6 thi, cdn sfi dUng

phriong phdp thi c6ng ngdm c6c khu vtic ndy thrrong li ddt y6u, c6c chi ti6u co-l1i

cira ddt gay bdt loi cho c6ng t6c thi c6ng hdm; ching han nhu r\ic dinh nh6, g6c

ndi ma s6t b6, d6 r6ng l6n, h€ sd thdm cao, d0 bio hoa nu6c ldn, srrc bdn ch6ng c6t

nh6' Nhfing ydu t6 n6u trdn hinh thdnh n6n didu ki€n dia chdt phrlc tap trong

thi c6ng hdm vdi dic didm d6 vi€c tinh to6n lua chgn cdu tao v6 ch6ng cho c6i

tluong hdm li cdn thi6t, mang tinh thoi srr Bii vi6t tld cip <tdn tinh to6n v6 ch6ng

do4n hdm ndi girta hai ga metro cho didu kiQn dia chdt phrlc tap nhim dim bio bdn

v0ng vi dn dinh cho c6ng trinh.

Titkh6a: Ttnh todn, dndnghdm, itidukiAn dia chdt

Addressing traffic congestion in urban areas is a very urgent matter, especially in

capital Hanoi and Ho chi Minh city In order to solve this problem, a

solu-ion has been proposed for the construction ofoverhead tram and subway lines In

reality, when constructing subway lines through areas having historical sites, high

population density, many above-ground stnrctures, etc., the opening excavation

nethod is not feasible, it is necessary to use the underground construction

meth-These areas are often weak soil, of which the physical-mechanical properties

detrimental to the tunnel construction; Such as small cohesion, small internal

ion angle, high porosity, high permeability coeficient, high water saturation

, small shear strength etc These factors create complex geological conditions

constructing the tunnel Hence, the calculation to select the supporting shell

re is necessary The article deals with the calculation ofthe tunnel supporing

between two metro stations in complex geological conditions to ensure the

and stability ofthe structure.

calculation, tunnel, geological conditions.

n Duy€n Phong, Trudng Dai hoc M6-Dia chdt

A.N, Dal hqc tdng hqp nghi€n cfiu vd c6ng nghQ qu6c gia MISIS.

Pankratrenko A.N, Phqm Th! YAh

1 Cd sd ly thuydt Di€u ki6n dia chdt phtlc tqp trong bii vidt niry cfrloc hidu li nhrrng y6u t6, didu kiAn mi kh6i ddt cf6 xung quanh ph6t sinh, phdt tridn khi clio hdm g6y bdt loi

cho c6ng tdc thi c6ng Khiii quiit rtidu ki6n dia chdt ph(c tqp d tl6y tltroc hidu la ddt c6 srtc ch6ng cit nh6

do luc dinh Cvi g6c ndi ma sdt E nh6; dO r6ng ldn, h6 s6 thdm cao, et6 b6o hda nudc ldn, c6 thd phiit sinh

ddt-ciit chiy, h6a l6ng, th)nh vdch h6 dio kh6ng dn

dinh d6 sqp ttd, Nhrlng y6u t6 tr6n cirng vdi didu ki6n ch6t hep vd kh6ng gian, m6t dQ giao th6ng vi

c6ng trinh bd mdt cao, s6 lim cho vi6c thi cdng

c6ng trinh ng6m kh6 khin, ddi h6i phdi srlt dung cdc phrrong ph6p phi th6ng thudng.

Vi6c tinh to6n kdt cdu v6 ch6ng cho cdc tuydn hdm

c0a tiu efi6n ngdm b5 tritrong khu vuc etia chdt phfc tap ndu trdn sE tdn tai rlng sudt ban ddu - dp

f ucth0ytinh: o(0x0) -o(0x0) =-yH, {)t't =g.

(1)

d cfdy: y - trong ludng thd tich trung binh cOa ddt rld;

Ap dung nguy€n l! chdng chdt cho ph6p m6 hinh

h6a toirn bd r"?ng sudt trong kh6i cfdt l6n c6n xung quanh cludng hdm bing tdng rlng sudt ban cldu d0)

tot vd fng sudt bd sung ollxo) (kh0 rlng sudt), didu ki4n hinh thdnh drfdng hdm: o:{0) = o{0x0) + o{1)(0)

d tl6y: k1i hi6u otdt ca ciic thinh phdn tenxo,ing ,rftl

Kh6i ni6m "khrl rlng sudt"cfrloc GS Rosdin t.V t5l dua

ra ef6 m6 ph6ng hinh thinh drrdng hdm vdi rlng sudt

trudc c0a kh6i ddt clii c6 trong luong S0 dung kh6i

ni6m d6 don gi6n ehla ra ring: sau khi dudng hdm

dlloc dio thi tr€n bi6n hdm cdn ph6i9i6i ph6ng toin

D6 ld c6 thd dat t6i sq x6p ch6ng tr6n midn r-lng sudt

ban cfdu xung quanh tludng hdm gi6 tri bing nhu vdy, nhung ngudc lai bdng ddu hi6u fng sudt bd

Sau khi dudng hdm dugc l5p dung v6 chdng, v6

chdng s6 c6 dQ cfng x6c cfinh, phu thudc vio chidu

Thi Y6n, Trildng Dai hoc M6-Dia chdt

7.2017 MEDUMCI225

Trang 7

dly cdu tao c6ng trinh ngdm vi tinh chdt bidn

dang cOa vdt li6u v6 ch6ng, tr] d6 ch6 tao v6

chdng, trong kh6i ddt ditxly ra sr,r ph6n b6 l4i

fng sudt TrJ trUdng hop d6, khi n)o v6 ch6ng

duoc bd tri truc tidp tr6n gudng, ngay l6p trlc

sung) fng sudt, tiic ddng vd phia kh6i ddt dd,

hoin toirn ilua ra trong v6 ch6ng vdi gid tri t6i

trgng (;ip luc theo hudng bdn kinh) V6 ch6ng

s€ lim vi6c chung vdi kh6i ddt itd trong tinh

chdt ph0c hop phdn t0 th6n9 nhdt bidn dang

h€ "v6 chdng-khdi ddt dit,: So dd tinh todn dd

h)nh 1.

Hinh 1 So dd tinh toiln v6 chdng

So dd trdn cho thdy vdi bii todn dit ra thi ldi gi6i

9i6i tich trong cdc tii li6u ttl, t2l, I3l, tal, 16l vd

Gia thi6t ring dudng hdm kh6ng ch6ng:

Khi d6 tr6n bi6n lo (virng So) u?ng su6t toin phdn

trong hA toa cf6 cr,rc (c6 kd d6n bidu thr?c (t) vi

(2)) c6 thd vi6t nhtJ sau:

6ta) _o(1)(o) +o(o)tol _o{t)to) _yH:O .

(3)

to6n d6i xr.?ng truc Khi d6 fng sudt bd sung

tr6n bi6n dudng hdm kh6ng ch6ng s6 ld:

o!t)to) =YH ,

Xem x6t trudng hop khi dudng hdm c6

ch6ng:

Til di6u kiAn (4) c6 kd ddn ph6n trtc v6 chdng q^

sE c6 dang: o,(l)(il =yH - qo= -@o- Vtl),

(s)

6 dAy: qo - phdn h,tc v6 chdng; khi q" = g - 6nn vdi trudng hop kh6ng ch6ng gi0 thi (S) trirng voi (4)

Trong bi6u thfc (5) nh6n thdy ring, fng sudt

phdp tuydn t6c d6ng tr€n bi6n hdm L" trong virng 50, ld n6n mang ddu Am,r,i

BOn ngoii bi€n v6 ch6ng (vdng S,) xudt hien

cldu trong v6 ch6ng yH,vidt bidu thrlc dd bd

vong 5, trdn elrrdng bi6n t^ vdi kh6i ddt dd:

o',"" qo ,

Vdi trudng hop khi nio v6 ch6ng Uun OO(rXl trtrc tidp tren gudng hdm, dd gi6i quy6t nhiCm

vu n)y c6 thd nhdn afuoc kdt qu6 vdi sfi dung loi

gi6i bdi toSn Lame [B]: m6 hinh h6a v6 ch6no

tit bi6n dang ph3n9 chidu dAy th)nh 6ng, t[

di6u ki6n c6n bing chuydn dich b6n kinh tr6n dudng ti6p xric v6 chdng v6i kh6i ddt dii Gi6 s0

tiic d6ng rlng sudt bd sung (5), (6) nh6n phllong trinh.giri tri tudng d6i ph6n lrrc qo.

Ap dung voi chrj,! phLlong tic d6ng cOa t6i trong vi clua vio trong bidu thri'c Lame bdn

kinh b6n ngoii 5ng ro= a, 6p lUc bdn ngodi p^

= 0, ti/ d6 vi6t bidu thrlc dich chuydn m6i quong vd cirng (khdi ddt d6) tr6n bi6n L0:

,"=+;:+Ltt zp)ni-nif

z9l no -I1 _

(1 0)

Bidu th0c (10) c6 thd ifura ra dang Qo = ffuo), vd quan h6 d6 chinh li duong ddc tinh crli v6 ch6ng Ta vidt lai (1 0) nhu sau:

qo= uotga.

"_ (1 1 )_,

-.

- n

| (_zp,)Ri+Ril'

(12)

toa cl6 (qo, u/ cho trdn hinh 3 Giao didm A cOa dudng 7 vd 2 bidu thi trang th6i can bing cia h€ th6ng nhdt"v6 ch6ng-kh6i ddt dii,i

I

Hinh 3 Dd thi xiic dinh trang thdi cdn bing cria h0 thdng nhdt

(4)

v6

d Cl6y: ddu "-" trong bidu thrlc (7) th6a man didu "v6 chdng-khdi ddt dit':

b6 tr6n bi6n lo dich chuydn vao phia trong Trdn hinh 3: ih.tdng thing I bidu di6n phr,rong dudng hdm; Go - dic tinh co hoE c1a cfdt ild, gor: trinh (1 1); duong thSng 2 - bidu di6n phLtong

ldm6crundichchuvdn: o"=;h

Hidn nhi6n rins,['li1l'J 4 sioa hai dd thi

(S) tL/dng ung vdi trang thdi c6n bing c0a h6,,v6

/ ^- h,rc tdc dung l6n v6 ch6ng; gid tri uo = U _ dich qn= ffu") ' = q" = yu( t t-?8 Ho yH ,)- rn ) -r^ron , chuydn titOiaat h6 2 phuong trinh aa (9) roa J6 vd (t 1); aigr,q tit cfdy ta rrit toi gi6i ra: c0a Vdi gi6 thi6t ring v6 ch6ng ngin c6n bi6n dang trr

do tr6n bi6n lo CtUdng hdm khi d6 s6 tao n6n ph6n

lUc qo Xem x6t tUong t6c c0a phdn t0thu6c h6,,v6

ch6ng-kh6i ddt dd'| cho tr6n hinh 2.

(e)

d d6y dit:

,.o

trang th6i c0a ddt dd, cho thdy rdng m6i gid tri ph6n lrrc v6 ch6ng eo (dp lqrc d6n v6 ch6ng) tuong ung vdi d6 ldn xdc clinh cia dich chuydn

bi6n mdt cdt drrdng hdm uo Vdi kdt qu6 niy ta

afua vdo b)i to6n Lame vdi b;in kinh ngoii 6ng ro= Rr 6p h-lc bdn ngoii po = qo, bdn kinh b6n

trong rr = R, vd 6p h.tc bdn trong pr = 0, di tdi bei

todn bi6n dang phSng c0a v6 ch6ng Giii dich chuydn hudng kfnh crla m6t didm b6n nqoiri

Ung sudt b6 sung trong v6

bing bidu thr.?c:

- Bdn ngoii bi6n v6 ch6ng lo:

p2

1t

-(ei) _

,,0

-"d - -Etlo

1 ,']

D2

,Io

(1 3)

otnn

chdng xdc ol1) = -qo I

50 dd tei trong thdng nhdt bidn dang h0,,vd chdng-khdi

XAEDUNS 7.2017

Trang 8

f.,Ri )

"'t"' L M=-tuRi b(r!-\'

'l,*t'| " I R"/

( &l

- Bdn trong bi6n v6 ch6ng L,: o' '' 2-0".

1"1 R;

(1s)

Lr,Ic dgc N vd m6 men u6n M trong mdt cdt

^tii\ | ^le,\ ^tin\ _ ^le\

N="t

,"t bt; M=:_! _:_o bL, .

l16L ,

"\ Ro

)

- chi6u dly v6 chdng; gia tri b ldy bing d0 dii

tlonvi ddi,b=1m.

Thay bidu thrlc (14) vir ('15) v)o bi6u thfc ('16),

nh4n dugc:

(17\

Cin cr,l vdo N vd M x5c dinh theo (1 7) c6 thd

kidm tra d0 bdn c0a v6 ch6ng tren mdt c6t

ngang.

Ching hqn, di6u kiQn bdn v6 ch6ng vi6t drrdi

wl< Ns.

(1 8)

d ddy: N5 - gidi han kh6 ning mang t6i crla mit

cit v6 ch6ng lirm bing be t6ng c6 cuong efQ

chiu n6n l) R' x5c clinh tU bidu thric:

-ttQ l€ch t6m c0a lqlc dgc N.

Srldung bidu thrlc (1 7) vd bi6n cldi cho ta:

didm cdn bing gidi han c6 tung dQ qo= P",c6

nghia ring dQ bdn v6 ch6ng s6 d6m b6o tir

oreuKren:P<l/

(21)

c6 thd ti6n hinh truc ti6p ngay 6 gr,long diro

v6i lo = 0 hodc ldp dqng v6 ch6ng chqm hon

vdi khoang c6ch tr6 ld /o * 0 tinh tr)I guong ddo.

thiii cAn c0a h€ h6 "v6 ch6n9-kh6i ddt dd" nhtt tr6n hlnh 4.

Hinh 4 Xiic dinh trang thiii cdn bing hQ"vd chdng-khdi diit dii"

khi ldp dqng v6 chdng vdi khodng ciich lotilguong.

Trdn hinh 4 drtong thing 7 - thd hiCn dd thi trang thdi cdn bing gia c6 dudng hdm; dtlong thSng

2 - dd thi trang th6i c6n bing cOa v6 ch5ng, 15p dung v6i khoing cdch tr6 /^ tiJ gudng Didm A giao didm dd thi tudng fn! vdi trang thdi cAn bing cOa hQ "v6 ch6ng-kh6i ddt d6': Dd so siinh ctuong thing 3 (ttlldng n6t dr-tt) cho thdy d6 thi c6n bing trqng th6i v6 ch6ng ldp dr,tng ngay

trdn guong; didm B - giao di6m d6 thitrang th6i

c6n bing vdi trudng hgp l5p dung tr6n guong.

Phdn dich chuydn kh6i ddt d5 u(/o) trudc khi tidn hinh l5p drrng v6 ch6ng vdi kho6ng ciich tidn gudng I dugc thd hi6n tr6n dd thi bing doqn

OO" N6u duong hdm cdn lai kh6ng gia c6 k6o

dai thdi gian (di€u chinh kho6ng c5ch d6ng

kd v6 ch6ng tir gudng khi nio /o -+ -), chuydn

dich kh6ng gia c6 dt-tdng hdm khi d6 ld: u(-) =

yHR/2G0.

ch6ng trigudng hdm se ldm gi6m dp luc d6n v6 ch6ng, t(c l) c6 didu kiAn P < P Trong co

d6 srl dung bidu thrlc: P = P-a- hoac a = P/F.

(22)

Xdc dinh o'c6 thd tidn hinh bing ciich x6t cdc

tam gi6c ddng d4ng AEF vi OBF; O-AD vit OBE ) til cl6 r(t ra:

P AD o'A oF oo' u(o)-ut/") ultrt , ,,,

A =- P BE OB OF = ,(-) ,(-)

dcl6v: f{/^t= u(/.) - u(4) ,ula1=RolH

' ' "' u(-) ( n"yu \ 2Go

'/

xem l) 16 kho6t trdn khdng l5p dqng v6 ch6ng

b6n trong.

Nghidn cr?u su tdn tai dich chuydn bi6n hdm

vdi su phu thudc khodng cdch tfdn guong hdm

di c6 nhi€u tbi li€u dd cap nhLlDavuid6p N.A.

vdi bii todn coa lyi thuydt din hdi vdi viQc 6p

dung phuong ph6p s6, phr,long phdp phdn trlt

M., GS Bunuichep N.S., [3J cho ph6p r(t ra m6i

/o/Ro ddn gtlong cfudng hdm theo tudng quan

him m0 sau:

( ,.t"/ \ a- -0.64 'I e -'Ro

(24)

Til dAy cho ph6p rrit ra sr.t phu thuQc dd didu

chinh fng sudt ban afdu:

d-(0)(0) -d.(0x0) =-yHa' ,

".11,,0,=O (25)

- Khi giim chi6u diy v6 ch6ng dudng hAm, trlc

qi6m qid tri

^=R^ -n, =a[r-&] "l Ro ) thi hJcdocNva m6 men u6n M trong mat c5t ngang v6 ch6ng s6 gi6m (theo c6ng thrlc (16)) Khi R, -+ R0 thi A

-+ 0, d5n d6n N = 0, M = 0 vir do d6 6p h.rc c6 go+0.

-Trong cfdt rdt y6u th6a min tfi€u ki6n G, >> Go, (G, - m6 cfun bi6n dang cOa vit liQu v6 ch6ng;

Go - m6 cfun biSn d4n9 c0a ddt, vi do ddt rdt y6u

ndn Go rdt nh6); khi tl6 c6 thd xem GolG, -+ 0,

do d6 qo ti6n d6n gi5 tri rlng sudt ban cldu trong

kh6i ddt 16, tfc la qo+ yH.

- Khigi6 tri /o cirng ldn, tr,?c li dr;ng 15p v6 ch6ng

hdm mi ta dd bien ddt d;i dich chuydn tr,l do

mQt thdi gian to fng v6i kho6ng c6ch tr6 /o thi

6p h.rc t5c dung lAn v6 ch6ng giim, dich chuydn

c0a v6 ch6ng s6 tdng.

- Tit d6y c6 thd r(t ra rlng dung thqc ti6n nhLI sau:

+ Sf dung k6t cdu ch6ng mdm, linh hoat kich

thr-tdc sE lim gi6m tai l6n k6t cdu;

chuydn nh6, s6 l)m ting t6i tdc dqng l6n kdt

cdu;

rs = r<nrao[r -.39r) = *,u (

.412+ !|

' t"lr[r*4'J '

\ R6'

(1e)

Inay ( ry) vao ( ru) va oe y oen ( | /l/ oren oor va

giii ra cho:

l,'-4.)l.,.t]

3b (^ I J+ : ni )'

I

( R;l (20)

6 ddy: P" - gidi han 6p hlc, dp luc mi v6 chdng

driu drtgc nhung kh6ng lirm t6n thdt kh6 ning

mang tdi.

Nhr-t vqy, dtrdng thSng 2 tr6n h)nh 3 di6n t6

trqng thdi cdn bing cOa v6 ch6ng bA t6ng;

7.2017 xffiEuNG 227

(23)

Trang 9

chdng ngay thi t6i trong tdc dqng l6n k6t tang;

do mQt thdi gian t0 fng vdi kho6ng c6ch tr6 /o

m6i ti6n hirnh dr,lng l5p v6 ch6ng thi t6i trqng

t5c dr,rng l€n kdt cdu s€ 9i6m.

TAI TITU THAM IHAO

[1] Vo Trong Hirng, Phlng Manh Ddc Co hoc tl6 rlng dung trong x6y dung cdng trinh ng6m v) khai thiic m6 NXBKHKT Hit NQi,

2008,

[2] Nguy6n Quang Phkh (d hgc dii NXB Xay dung Hir NOi, 2006 [3] Nghi0m H[u Hanh (o hoc d6 NXB Xay drng Hi N0i, 2004 [4] Nguy6n 5i Nggc Cd hqc dii Nhir xudt bin giao th0ng vqn t;i, H) Noi,2005.

[5] Polr,rx 14.8 [ttuuaeman Harpy3Ka il ropHoe AaBneHile. 14ccnegoearun roptoro gasneruR - M.: locroprexu3Aar, 1960.-c.343-374.

[6] Sarnauoe 14.B., Kapro:r.rr 6.A Mexanuxa noA3eMHblx

coopyxeruft n rorcrpyrrluu xpenett M.: Henpa, 1984 - 324 c

[7] 6ynurqee H.( lVlexatr,xa noA3eMHblx coopyxenr,ll: he6.

4nr eyroa, - 2-e u:g., nepepa6 r,r 4on - M.: Hegpa -1994 - 382

C

l8l Caltynr 8.14 OcHoeut Teopil[ ynpyrocTt4 u nnacT[qHocTl4

Yqe6 floco6ue Anr cTyAeHToB eyroa M.: Butcur uxona, 1982 -264 c

roprux aurpa6orox td pacqeTy rpenr,r BHI'lMl4, BHl4l/0MlllC Murymenporvra (C(P.- M.: Crpor,rr,r:ga1 1983 - 273 c

[10] Aasuraoea H.A flptt6ruxerroe peuJeHle 3aAaqu 0

cMeueHilrx noBepxH0cTt4 6ecroleqlot'l liunIHApt4qecKoI noJlocr[, 3alpyxeHHoi xecTKl4lil KotlbqeBblM uraMn0M xoreqrofi nnnrul OTnPflil - 1968.- Ne3 - c 111-1'l7 [11] Baudendistel M Zum Entwurf von Tunnellen mit grossen

Ausbruchsquerschnitt Rock Mechanics - 1979 - 5uppl Ne 8 - p

95-100.

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