CIVIL ENGINEERING IN VIETNAM – CHALLENGES AND OPORTUNITES pps

CIVIL ENGINEERING IN VIETNAM –CHALLENGES AND OPORTUNITES Prof.Dr... The engineering solution and new technology need to be developed in foundation engineering and construction to achieve

CIVIL ENGINEERING IN VIETNAM –

CHALLENGES AND OPORTUNITES

Prof.Dr Nguyen Truong Tien

Mobile: (+84)9 0340 5769 Email: truongtien@gmail.com

Vietnam has great demands in the development of infrastructures, buildings, houses, factories and other type of projects in difficult subsoil conditions and limited resources The engineering solution and new technology need to be developed in foundation engineering and construction to achieve high engineering value, by increasing the quality and g g g y g q y reducing the cost This paper make the review and discussion

on the application and development of civil engineering and technology in Vietnam Achievements, innovations, lesson learned as well as experiences from collapse and failure of projects as well as challenges and oportunities in civil engineering are presented, described

Therefore it is necessary to develop and adapt new engineering solution and concrete technology in foundation and construction for sustainable development and for a better quality of life Proposals and suggestions on the above subjects are made in this paper

Problem with the stability of

national highways and natural slopes

• Low quality of consulting services

• Severe natural and weather condition

Failure of Can Tho Bridge

Drilled hole position and soil condition

Cantho Bridge

The temporary supports for construction (Axis 13-15)

Failure of temporary support due to the differential settxlement

(Report of National Committee 7-2008) Steel supports: Steel column H350x350 Steel structure: The joint between columns and pile cap

is boltnut

The columns of the temporary supports

for construction (Axis 13-15)

1 Soft clay 2.Fine sand 3.Soft clay 4.Soft clay and organic soil

5.Fine sand 6.Clay Soil condition under the foundation support system for the

temporary supports for construction (Foundation pile : concrete pile 300x300 14 pile per

grillage Deepness about -37m)

Bridge pier (Axis 13-15 )

5 minutes before accident

on 26/9/2007

The temporary supports for

construction was collapsed

Research, Experience and

Warning accident

• The failure of Can Tho Bridge is caused bydifferent settlement between the principal piers(13, 14, 15) and temporary supports forconstruction In the principal piers and thebored pile to about 80 meters of depth is used,

in the temporary supports, driven pile of 37meters of depth are used However during theconstruction, the temporary supports play therole of principals piers Those are supportedmore load of concrete slabs

Lack of Expertise and code of Ethics

Design and Standard

Management and Projects

Risk management

Skill, knowledge of engineers

New engineering solutions, technology and materials Corruption and Transparency

Institute of Social Science

HCM City

Pacific Project, HCM City

In Hanoi and Hochiminh cities, a lot of highrise buildings are under construction Thebasements of 1 to 5 floors are excavated.Failures and collapsed of nearby buildings areoccurred The reasons of a failure are themistakes from soil investigation, design andconstruction of diaphragm wall protection ofwater flow and soil movement as well asmanagement, quality control, quality assuranceand monitoring The consulting services inmany cases are not professional and lack ofethic codes

Flooding, Climate change, severe natural conditions

• During the last 50 years, the averagetemperature is increased C Vietnam will beone of 5 countries has serve impact due to therising of sea water level If the sea water level

is rising 1m flooding will occur in Red andMekong Delta Rivers

Severe Weather Conditions

Su rface water raises

up to 4m in flooding

area (11-2007)

Poor people and countries are more vulnerable to nature and

human induced disasters

Hazard x Vulnerability = Risk

(Nature or (Social, Economic, Human Enviromental, Even

induced) political factors)

Climatology Population growth and Urbanization

Forecast Technology (EWS, Water

Forecast Technology (EWS, Water

Conservation Technologies) Land use practices Env Degradation Water use Trends Govt policiesEnv Awarenes Capacity (technical & institutional)

Tropical cyclones Tropical cyclone track

Flood in Ha Noi on 1/11/2008