action plan for wt-2 4.08.12

7/28/2019 Action Plan for WT-2 4.08.12

1/18

Action plan for CNCRP Working Team-2

Md. Rafiqul Islam

Executive Engineer

PWD Design Division-III

&

Team Leader Working Team-2, CNCRP


2/18

Objectives of working Team -2 in the currentJapan tour under CNCRP

Condition of Existing Buildings

Various techniques for retrofitting

Research work on retrofitting

Selection/Categorization of Building for Retrofitting

Seismic vulnerability assessment and retrofitting design

Design of earthquake resistant new building

Precaution about public safety and security during retrofitting

design and works


3/18


Present condition in Bangladesh

Most of the existing buildings were not built by considering

seismic forces.

Without seismic detailing.

Small column size.

Plain rebar is used.

Weak Beam Column joint.

Infill masonry wall is used in frame structure.

Most of the buildings are not durable due to poor concreting.

Mixed frame structures.


4/18


Observation in Japan

Seismic force is considered to design the building.

Large column size is observed.

No deterioration of concrete and rebar of the existing building.

Item of activity to be considered for CNCRP

Strength of the existing building material to be tested.

Capacity of the existing building to be estimated by analyticallyand experimentally.


5/18


Way of Implementation

List of martial strength to be tested by period wise.

Experimental facility to be established.

Long term goal/ achievements

We have to prepare the existing building inventory for the whole

country by following the test result.

Depending on the test result we need to retrofit or demolish the

structure.

Remarks

No


6/18



No retrofitting work


Retrofitting by

Steel frame bracing.

Base Isolation.

RCC Column Jacketing.

Insertion of shear wall.

Seismic Slit.

Wing Wall.

Steel Column Jacketing.


7/18



Suitability of the different seismic retrofitting techniques should

be explored for Bangladesh .


Pilot project should be considered as retrofitting test work.


We have to retrofit the existing building depending on the seismic

vulnerability.

Remarks

No


8/18



There is no research work on retrofitting techniques.


Research work is enduring in private and public sector.


Some research work need to be implemented.


9/18



Under the supervision of JICA expert, working team-2 will

do some research work by analytically and experimentally .


PWD will establish a research laboratory with the help of

JICA expert.

Remarks

No


10/18

Selection/Categorization of Building forRetrofitting


There is no guideline for seismic retrofitting.


No specific categorization procedure in Japan.

Some top down selection procedure exist.


We have to prepare a categorization guide line for seismic

retrofitting as per direction of JET.


11/18

Selection/Categorization of Building forRetrofitting


CNCRP together with JET need to find out suitable technique for

implementation.


We have to prepare the building inventory for the whole country

by following this categorization guideline.

Remarks


12/18

Seismic vulnerability assessment and retrofitting

design


Almost no such capacity.


There are specialized group of structural designer capable for

seismic assessment and retrofitting design.


Need to prepare seismic vulnerability assessment manual.

Need to retrofitting design manual.

Need to learn the way of pushover analysis.

Need to learn dynamic time history analysis.


13/18

Seismic vulnerability assessment andretrofitting design


Manual should be prepared with the help of JICA Expert Team.

JET will help to learn these analysis properly.

Long term goal/ achievements PWD engineer will disseminate these knowledge to the public and

private sector.

Licensing system should be developed for retrofitting design.

Remarks

No


14/18



There is a lack of capable structural design engineer.

Building construction regulation is not strictly followed.


Building code is strictly followed by consultant and constructionagency.


Need to prepare seismic design manual for new building.

Need to learn the way of pushover analysis for the design of new

building.

Need to learn dynamic time history analysis for the design of new

building.


15/18



PWD engineer will prepare this design manual with the help of JICAExpert Team.

PWD engineer will learn these analysis procedure with the help of

JICA Expert Team.


PWD engineer will disseminate these knowledge to the public and

private sector.

Licensing system for the professional engineer for design and

construction of building should be followed strictly.

Remarks

No


16/18

Precaution about public safety and securityduring retrofitting design and works


Since there is no retrofitting works in Bangladesh so there is no

guideline for public safety and security.


Various steps are considered to ensure public safety and security.


Public safety and security guide line need to be prepared.


17/18

Precaution about public safety and securityduring retrofitting design and works.


Need to explore Japanese as well as other international guide

line to prepare the guide line.

Long term goal/ achievements Public safety need to ensure.

Need to increase Public awareness .

Remarks No


18/18

Thank You

action plan for wt-2 4.08.12

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