Nguyên lý thiết kế cấu tạo các công trình kiến trúc 13 ppsx

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CAU TAO CAU THANG

I.- Khai niem v$ cac phuang tien giao th8ng thhng dung :

Trorig kign truc cac n h i cao t$ng d6u chn phiii c6 d ~ d n g giao thBng Ien xu6ng gi3a cac tang, trong d6 gdm : chu thang t h ~ d n g , thang may, thang t y chuy6n, d&ng d6c .v.v (H6-la)

I/- Dddng d6c : gidi han do d6c ti? 0 - 20' Do d6c t d 1 : 10 tr6 xu6ng lam d&ng d6c thohi Dudng d6c thohi t6n n h i h dien tich nen chi sd dung 6 mot s6 cBng trinh dqc biet n h ~ benh vien, gara 6t6 nhi&u tang

21- C&u thang thudng : Gidi hgn do d6c t d 20 - 4 Thich hdp n h i t la 30' (1:s) N6u > 60' thi ddy la chu thang thhng ddng

31- Thang t$ chuydn : Dung 6 n h h g ndi co lubng n w d i di lqi rdt nhie*u nhU cda hang bAch hoa, nha ga v.v (H6-lb)

41- Thang may : Dung cho c i c nhh cao tLng nhu nhh u, nhh 1hm viec 6 tang, benh vien, t r u h g hoc 4 d n g nhhm giim b& hao phi nsng luqng ciia ngubi l&n xudng c h thang, ti& kiem thbi gian van chuy6n - Nhh cao tang cLn phii c6 thigt bl thang mBy Mn canh t%y vHn ph6i thiet kk$ cAu thang t h u h g - Thang mAy thigt bj c a khi phdc tap tien hao tdn sira chila l h , n&n dbi vdi c i c nhh xiiy d m g phd bi6n it dilng (H6-lc)

11.- Cau tao cau thang :

11- Mo th bo phan : CBc bo phan c a bin cha cLu thang gdm 2 bo phan chinh : thin thang vh chie'u nghi (H6-2)

1.1- Than thang : (H6-3)

- Y&u cAu cgu tao : nhu mot loai shn g i c d4t nghieng trCn xAy bat d l di lai

- Thhnh phan :

+ Dam thang : trac dien : c6 th6 hinh chii nhijt, hinh ribg cua

+ Bat thang : thing goc vdi d u h g bao quanh hoac dAm thang (limdng), chng c6 khi xCo g6c vdi t u h g bao quanh hoac ddm thang Bgc thang c6 th6 hinh ch3 L hay hinh tam giic BGc thang d6 di lai an tohn ph6i 1hm lan can

+ Tran thang : y&u cAu ph6i my quan, ve sinh

1.2- Chieu nghi : (H6-4)

Than thang s6' b$c li6n tyc khbng n611 qua 18 b$c, cGng khbng n&n it h m 3 b@

Khi 1s b$c d gida n&n thiQt kQ chi& nghi Ddi vdi cdu thang thoat nmdi la chinh thi

chigu ngl~; khbng dddc thigt kke" qu$t

21- PhAn logi c&u thang : C6 nhi&u cach dd phin loai cAu thang

2.1- Vi tri : Dqa v6o vj t r i dst cQu thang thi c6 :

- CQu thang ngoai nha

- CQu thang trong nha

2.2- S d dyng :

- Trong nha : c6 c$u thang chinh, cQu thang phu

- Ngoai nha : c6 cQu thang thoat hidm, cQu thang dich vu

2.3- V a t lieu :

- CQu thang xay ggch, da

- CQu thang thitp, g6

- CQu thang b6tdng c6t thitp, cQu thang h6n hqp

- CBu thang chdt dde

2.4- Hinh thuc : (H6-5)

- Cdu thang 1 v&, 2 - 3 ve"

- Cdu thang tron, tr8n oc

- Cdu thang bit giic, ciu thang lech tdng

2.5- Ket cau chiu luc :

- Cdu thanp ban chiu luc

- C$u thang b6n ddm c h ~ u luc

- Cdu thang treo, t u h g , tru c h ~ u IUC

31- Tham so cau tao chc bo phan :

3.1- Chieu rong than thang : (H6-6a)

- Tu9 thuqc vi tri :

a- Tay vin 2 bCn : Om60/dm vj

b- Tay vjn 1 bCn, 1 bCn tudng : O,7Om/dm vi

c- T u h g u 2 bCn : 0,80m/dm vi

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So" d m vj 1 d m v j 2 d m vi 5 d m vj

Vi t r i a 0,601~1 1,20m 1,80m

V! t r i b 0,70111 1,30m 1,80m

Vj t r i c 0,80111 1,50m 1,80m

- Tuy thuoc l a l ~ g n g va so" n w d i scl dung tinh the0 vj tri

Thbng thLfdng chidu rgng than thang nha d : 1,20 - 1,40m c6 thd bao dam 2 n@di l$n xudng d6 dang (vi 2 n w d i c6 chi& rong : 100 - 1lOrm) C6u thang phu nh6 nhdt

Nha cbng cong c i u thangc6 chi& r$ng call cQ v50 tinh toan thoat n g d i quy6t djnh, thu'dng 1,40 - 2,OOm (H6-6hl,b2)

Do"i vdi thang leo, chidu rong than thang trong khohng 40-50cm (H6-6c)

3.2- D? d6c : (H6-7a,b)

Do cao cua b$c thang c6 quail he vdi chidu dai ciia b&c chan ng&i di Chidu dai 1 bLfdc

di td 59-66cm tuy the0 t6c do di :

- Ru-dc ch$n : 59cm

- Budc trung binh : 62 - 64cm

- B~idc nhanh : 66cm

Quan he g i h chi611 cao 11 vii chiku reng h c i ~ a bgc thang c o th6 bidu diEn bang c c i n ~ thirc : m = 2h + b (H6-7c)

Vui in = 600 - 640m111 15 chi6u dai trung bin11 cita bu.Clc di ngLidi 1611 va tri! em Tham so" v6 quan he gida h va g d6 bao dam an toan la h + g = 440 - 470mm va d6 bao dam tien nghi t11oAi inai la : g - 11 = 120 f 20mm

Chidu cao b$c thang thbng thUdllg 1; 140 - 200inin, chi&u re i ~ g s6 15 320 - 220inm

va do do"c c i u thang nAin trong pham vi 24 - 45' Do d6c b$c thang thich hdp c6 chidu cao h = 150 - 18Omin, c11idu rang 240 - 300inm va 66 do"c 26 - 33' Thich 11dp n11a"t la :

h / b = 150 / 300

160 / 280

Do d6c : 26'34' - 29'45'

Do d6c cdu thang cbn ttfdng quan d6n cbng nRng cua cbng trinh

Nha d Trudng hoc H6i trudng Ben11 vien Nha tri?

h 156-175 140-160 130-150 150 120-150

b 250-300 280-320 300-350 300 250-280 D6i vdi chu thang di lai it n s d i , c6 th6 lam hai do"c mot it :

h / b = 170 / 260mm

175 / 250

200 / 200

D6 bAo dAm di lai thugn tien va khbng bj il dong n s d i , c h i h r o i ~ g clia chi& ngh;

c h i h rong thAn thang Ddi vdi chu thang mot v6' d6 tranh hien tuqng phai d i m chAn

vi 16 budc thi c h i h rong clia chi& ngh; > 3 lhn chi& rgng bac thang hogc chi&u rong th5u thang c6 thd d ~ q c tinh the0 cbng thifc :

L = n ( 2 h + b ) + b (H6-8)

(11 la so" b ~ d c tai chi6'u nghi)

C h i h cao lan can c6 quan h$ tdi do ddc c6a cAu thang, chu thaug do"c it y6u cAu lan can cao va n s q c lai cAu thang do"c nhi6u thi lan can thgp h m ThBng thudng chi& cao lan can tinh td tAm mgt b$c thang trd 16x1 la : 0,80 - 1,00m, trung binh lgy 0,90m do"i vdi n s d i ldn va 0,65m cho tre em

Do cao thbng th6y chu thang chn bAo dAm cho n s d i di lai binh th~fdllg 2,OOm D6 bAo dAm do cao nhy thAn thang m8i v6' c6 th6 lam so" b$c khac nhau 1108~ ha n6n xu6ng

lam t5ng th6m my quan c6a cbng trinh

- Vj t r i chu thang can cif vao mat bAng, tinh chgt cbng trinh, tinh toan 1Uqng n s d i qua lai ma quy6t djnh

- So" 1Uqng cAu thailg quy6't dinh bdi : cbr:g dung, so" tAng, dien tich, so" nwdi va y6u cAu phong hoa

- Stf lisn tuc gi3a cac ha1111 lang va cac bubng c3u thang rdt chi1 thi6't va cAn bo" tri

dd d3 nh+n thgy r6 trong cbng trinh

- CB11g triilE kidn truc c6 chieu d i i 10m thi cdu thang c6 thg dgt 6 g6c nao tuy y

- CBng trinh kidn true dai 12 - 30m thi cdu thang 11611 d s t tai trung tAm hoac truc

- Cbng trinh ki6n truc dai 30m phAi dung 2 hay nhi6u cdu thang, dgt 6 vj t r i nhin thdy d6 dang tI3 hanh lang b cac tdng Idu vA tii' bQn ngoai

Khoang cach gi3a cac bu6ng cBu thang tii' 40 - 50in tuy thuoc vao b6 ddy cua cBng trinh kid11 truc va khoang cach di ddn cdu thang ghn nhgt tI3 bgt c d ch6 nao troilg t6a nha k1lBng qua 30m

- Cbng trinh ki6n truc co hdp kh6i bbi nhi6u nhanh thi vj t r i buBng cBu thailg nQn bet tai chc goc trong hay g6c ngoai va tai giao didm cua cac hanh lang

3.7- GiAi phap XI? 1y tgi vi tri xoay goc d6i hadng :

- X d ly tay vjn va lan can tgi c h i h nghi : (H6-10)

+ Chi&u nghi d~fdc ndi rang thein bang chi& rongb$c thang trQn mot nhanh thang

+ DBm tllang u6n cong

- X d ly b$c thang : (H6-11)

+ Myc dich yQu cdu :

T r u h g hap bu6ng thang khong d6 dien tich d6 thiEt kE chie'u nghi, yeu cdu cdu tao cau thang hinh quat

Lam thohi do doc 6 phan eo bGc xoay goc

Giam thiiu cich biet gifia c i c eo bgc v6i eo b$c ben trong 10 cm, bet thang hinh quat vdi goc ngoii bang 10' v i tai vi tri cdch tay vjn 25cm b& rQng bec thang > 22cm

Ap dung cho t r u h g hap xoay g6c ddi h u h g 180°

Phumg phip d m gihn (H6-12a)

Phumg phAp giao didm 2 vong tron (H6-12b)

Ap dung cho t r u h g hap xoay goc d6i h u h g 90'

Phumg phap bin c i o (H6- 12c)

111.- Cau tao cau thang go :

C$u thang g6 la loai cdu thang ma cdc bQ phgn chinh chiu luc nhu dam thang kd

cA bgc thang va chidu ngh; d$u ddgc cfiu tao bang vat lieu g6 Bdi v$y n6n c i u thang gb

c6 uU didm la nhe thi c6ng nhanh, dB lam dqp bAng khAc cham Nhu'dc didm cfia loai

c i u thang g6 c6 thd suy t d v g t lieu ndy la d6 mdi, mot, muc, d6 chay va thu'dng bj rung

ndu thyc hiencfiu tao rap n6i khbng dung qui cich

2.1-Hinh thdc bet thang : B$c thang dugc ca"u tao bang van g6 du day d6 chju

sdc nQng cua n@di v i v a t di chuykn b6n tr6n no, t.hu'dng met b$c duqc chon van c6 b6

day tli' 4 - 5cm, van lam d6i b$c c6 bd day 2 - 3cm

MQt b$c va d6i b$c duqc rap n6i bbng mong r51111 va dinh, troilg 3 cach thi t h d 2

va 3 dat y6u c i u hbn Mui b$c bao dam nh6 ra 4 - 5cm (H6-13a.b)

0 noi thu'dng dm uirt, bac khdi h i n h cua cAu thang g6 n6n xAy bbng gach da hay b$tbng nham bAo ve chdng muc cho d i u tya cua dAm thang g6 6 vl t r i nAy (H6-14)

2.2- H i n h thdc dhrn thang : Theo tr6c die11 va k i thugt cdu tao, c i n phAn biet

2 loai cAu thang :

a- Dhin thang hi1111 chi3 nhat : b$c thang du'qc dQt va li&n k6't vao dAn1 hbng cach xoi r5nh hoQc dong gd chlu b$c (H6-15)

b- DAm thang hinh rang cu'a : co thd thqc hien the0 2 cach : t iogc cu'a dAm thann hinh rang cu'a, hoQc thqc hien ri6ng re lam 2 phAn va dude rap ghr,p lai - Chi6u cao cua

dAm thang hinh rBng cua b phAn chiu Iqc chinh cua d i m cAn bao cl;iin > 15cm (H6-16)

3)- Chi ti& c8u tao :

3.1- C5u tgo 6n dinh d6m thang : ( H 6 - 17) Trudng hgp mot dAm thang dat sat tu'dng, cAn dat m6c s i t ch6n vao t u ' ~ n g dd neo

1 chju dim, dbng thdi co bd t r i bu Ion c h h g gi3 2 dAm thang d6' lien k6t chung lai, dAin

I bao khoang cach nha"t djnh cua chidu rong thAn thang va gi3 cho toan ho k6t C ~ L I 11Ay

kh611g bj x6 djch the0 phu'ong ngang, dap dng y6u c i u ch6ng rung cho CALI tht~ng

3.2- GhGp no"i d6m thang : (H6-18) Khi g6 lain dim thang kh61lg du dai thi cAn phai ghep n6i, vdi indi ghep g8m 3

thanh phAn :

- Hao mong g6 dd gid 2 mat ddu rap khit vao nhau

- Mot bu Ion sidt ch$t 2 ddu ghkp n6i

- Mot mi6ng thep dep du'qc b5t dinh vit ap sat vao mat da du'di cua dAm thang tai mdi n6i, chiu sQc keo

Ki6u cach ghep n6i nay ap dqng chung cho ca 2 hinh thdc dhm thang hinh ch

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Tiiy the0 vj tri, mat bang va hinh thiic cGa chi& ngh; ma c6 th6 ap dung 1 trong

a- GiAi phap dAm chiQu nghi la b6 ph$n chiu san chi6u nghi, dBng thbi la di6m tqa

cho cac dAm thang ciia cac nhanh cAu thang i

b- Giii phap dAm thang va tru phu dAm thang va tay vjn mot nhanll cAu thang va d6m chiQu nghi d ~ d c lien kgt b5ng mong thdng qua mot tru phu trung gian

DAu tren va dudi ciia tru phu phai dUdc chifa du ch6 d8 rap mong cho tay vjn va dAm thang v6 2 hUdng, c6 do cao ch6nh nhau bang m6t b$c (H6-19b)

c- GiAi phap dAm can don bdy : vdi don biy d ~ q c dat g6i 16n dhin can 6 khoang gi3a

va sit ghnh chju d8m thang6 dAu ngoai Giai phap nAy cung s6 d ~ q c ap dung cho t r ~ d n g

!

hdp c j u thang xoay goc ddi h~fdng khdng c6 chiQu nghl (H6-19c) I

a- MUC dich : la bo ph$n che mst dudi cGa t h i n thang, nh5m che bui td tren rdi I

xudng loai trit hdc k&in khdng cllo nhen gifing, dBng thbi tang vit my quan chung cho

b- Cciu tao :

- Mat trdn thuirng duqc lam bang cich to vi7a lCn luui thCp hoac nep go, tuy nhiCn vi

la cau thang bang go nCn v$ phuong dien my thu$t thi nCn dong v6n ghCp, go d i n hay

- S Utran than thang c6 the lien ket vho bac thang ho$c lien k&t vvho ddm thang ~ Theo cich trCn thuirng bi Anh h u h g ciia s u rung cua b$c khi c 6 ngubi di u ben trCn, nhi't

18 mat trin to vi3a sS: d6 b~ ran n& (H6-20)

1V.- Cau tao cau thang sat thep :

1)- Dac diem :

La loai cdu thang m i bo phan chiu luc chinh nhu d i m thang duuc thuc hien bang vat lieu sat thCp - Con bgc thang co th$ bang sat thtp hoac bing vat lieu khic nhu go, d6, betong cot thtp

C i u thang s i t thCp c o uu diem 1 i bdn chac hon cau thang go, vui than thang c o the lily rong v i dvhi hon - Vicc lap r6p cdu thang thuc hien nhanh va dE, nhi't 12 doi vdi kidu cau thang xoay goc hoac xoan tron oc Tuy nhiCn cdn luu y den bien phap khac phuc

i111uqc di6m F cd b i n ciia vat lieu s i t thAp la ~ h a i s m bao tri de phbng ch6ng r; set

2)- M6 t& bo phan :

2.1- lIillh thiz'c bac thang : B$c thang dude thuc hien vdi sudn ch/u ingt b$c b5ng thep hinh c h a L, inat b$c lam bang cac tdm t61e co khia hogc dugc lien kgt ha11 hay tgm

v6i1 g8 b i t dinh vit vio sudn Met b$c thang c6n c6 th6 !am bang ban betbng c6t thep

dot vio khu6n thep hinh c h 3 L d6 lien kdt vao dhm thang D6i b$c dufdc lain bgng t61e

phing B$c thang 6 didin khbi hAnh tai ndi thutmg 6m udt nen xAy bang gach da, betbng

c6t thep d6 gat dAm thang nham chbng ri s6t b didin tqa cua diin (H6-21)

2.2- Hinh thdc diim thang D6am thang s6t thep c6 2 hinh thifc : hinh c h 3 nhgt, hi1111 rang cufa

- DAm thang hinh cl18 nhat : Dung cac tdin t6le d i y td 6-12mm nguy6n tgm hogc d$p hi1111 chOU, hay ghep vdi thkp hinh chd L, hosc c6 th6 ghep v6i g6 thanh d i m rbng,

dufgc l i p ghep n6i bang din11 tan hay m6i hail (H6-22)

- DAin thang hin11 r5ng cufa : Diing cho cac tdin t61e ngc~yen dd c6t the0 hinh rang c~fa, hosc diing thep b i n , thep tr6n dd tao hinh rang cufa tr6n diin hin11 chi? nhat

(H6-23)

2.3- Tr6n thAn thang : (116-24)

- Sudn t r i n thudng duqc lien kdt treo b5ng thep trbn hay thkp ban vha k6t cgu b$c thang

- Mgt trhn duqc cdu tao bsng giai phap t6 vaa 1611 hfdi thkp d~fqc buot vao sudn hoec c6 thd dung t6n phang di! lain in$t t r i n

3)- Chi ti6t c6u tao :

I thi c6 t h i ap dung giAi phlip n6i bang cach dgt lib11 ddu v6i tdin che m6i n6i duqc lien

k6t 11an hogc dinh tan

3.2- Libn ke't clgm thai~g vao dgm chi& nghi : Dim clli6'u nghi thu.trng dugc ghep bsng 2 thep hinll cl13 I, U Din1 thailg duf~; lien kdt vio dAm cl~idu~ nghi bang

I

bulon v i thdp hinh c h 6 L vdi nh<fng t6111 dein bhng g8 cdng hogc gang (H6-25)

3.3- K6t cdu chi& ngh; : CEiu tao chie"u nghi ciia c i u thang s5t thkp c6 cungm6t i~guyen tAc 1111~ 6 c i u tllang g8, tuy the0 trudng hdp ma co t116 ap dung giai phap di~ilg

dim chi& nghi dd chju sail clli6u nghi v i cac d$m thang hoac giai phiip dilng dAm cAn

db11 bdy d6 chju d i m thang- Lien kdt gida cac dAm th~fdng duuc Ap dung giai phap lien

kdt bbag bulon vdi thep hinh L (H6-26)

V.- Ciiu tao ca"u thang x&y ggch da :

a- gach d

1.; vao ti 1:

b$c

ci

kdt cdi

2.1-

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25 - 3C

x Ay bin