APresentation

onPractical Training

taken at

DURATION: 23/05/2016 to 23/07/2016

SUBMITTED BY : 1. TEJPRAKASH KUMAWAT

Final Year B.Tech (Civil)

SUBMITTED TO :DEPARTMENT OF CIVIL ENGG.

DEPARTMENT OF CIVIL ENGINEERINGGOVT ENGINEERING COLLEGE

BANSWARA

HIGH FLOOD LEVEL BRIDGE ACROSS

MAHI RIVER

Details Of The Project:Site location:- HFL Bridge across Mahi river, Pipalkhut , Pratapgarh

abutment type:- Conterfront Type.

Bearing:- POT/ PTEF Bearing.Girder:- Precast PSC Girder.Handrail:- Steel Hand rail with welded mesh.Reinforcement:– HYSD Bar ( 8 mm To 32 mm).About the project:- Construction of HFL bridge across Mahi river at Chain age 118+363 at pipalkhut on Pratapgarh padi road (National highway NH-113).

Construction Company:- Dilip Buildcon Ltd. , Bhopal

Project In charge:- Mr. P.K. Mishra

Project Engg.:- Mr. Ramesh Babu

Expect Cost:- Rs. 12 cr after dismantling.

Date of Initiate:- 26 –Apr-2014

Date of Completion:- 24-Oct- 2016

Bridge length- 360 m

span- 12 (12×30) m

 

CONTENT1. EXCAVATION WORK FOR RAFT2. RAFT OF ABUTMENT AND PIER3. PIER4. PIER CAP5. ABUTMENT6. PEDESTAL7. PLACE FOR JACK8. GIRDER LAUNCHING9. SLAB

EXCAVATION WORK FOR RAFT

• A RAFT FOUNDATION IS A TYPE OF FOUNDATION THAT SPREADS THE LOAD FROM A BUILDING OR STRUCTURE OVER A LARGE AREA.  

• RAFT FOUNDATIONS ARE ALSO USED TO REDUCE THE SETTLEMENT OF STRUCTURES LOCATED ABOVE HIGHLY COMPRESSIBLE DEPOSITS.

• RAFT ARE USUALLY AT SOME DEPTH IN THE GROUND ,A LARGE VOLUME OF EXCAVATION MAY BE REQUIRED.

Fig: excavation work for foundation

RAFT OF ABUTMENT AND PIER• LEVEL THE GROUND

• PCC OF M15 GRADE CONCRETE

• PLACE THE REINFORCEMENT AS PER DRAWING

• COVER =75MM.

• HEIGHT = 1.1 M

Fig: Reinforcement details of raft

Fig: Reinforcement cage

PIER• MULTI-SPAN BRIDGES REQUIRE PIERS TO SUPPORT THE ENDS OF SPANS BETWEEN

ABUTMENTS• TRANSFER LOAD OF SLAB,GIRDER,PIERCAP TO RAFT

Fig: pier

Fig: details: of pier

PIERCAP

THE UPPER OR BEARING PART OF THE PIER, USUALLY MADE OF CONCRETE OR HARD STONE; DESIGNED TO DISTRIBUTE CONCENTRATED LOADS EVENLY OVER THE AREA OF PIER.

THE WIDTH OF PIER CAP DEPENDS UPON THE WIDTH OF CARRIAGEWAY, ITS SIZE DEPENDS UPON THE LIVE LOAD AND DEAD LOAD BRIDGE CAPACITY

GRADE OF CONCRETE M35

QUANTITY OF CONCRETE 35.567 M3

Fig: piercap

ABUTMENT

ABUTMENT CONSIST OF THREE PARTS

MAIN WALL

COUNTER FRONT WALL

RIDING RETAINING WALL

Fig: abutment

PEDESTAL

• USED TO TRANSFER LOAD FROM BEARING TO PIERCAP• GRADE OF CONCRETE USED M35

Fig: pedastel

PLACE FOR JACK

• THE LOCATION OF JACK AND TEMPORARY BEARING FOR LIFTING OF THE SUPERSTRUCTURE TO REPLACE BEARING ETC. THIS IS SHOWN BY SYMBOL

• THE TWO LAYRS OF MESH REINFORCEMENT ONE AT 20 MM FROM TOP AND THE OTHER AT 100 MM FROM TOP OF PEDESTAL AND PIERCAP EACH CONSISTING OF 8 MM BARS AT 75 MM IN BOTH DIRECTIONS SHALL BE PROVIDED DIRECTLY UNDER THE BEARING/JACK AND TEMPORARY BEARING

+

Fig:detail of piercap

LAUNCHING OF GIRDERS SITE PREPARATION

BASIC PLANNING

PLACING OF GIRDER ON EXCEL PULLER OF CAPACITY 125 T

TRANSPORT TO THE LOCATION

LIFTING THE GIRDER BY USING THE CRANE CAPACITY OF 250 T

FIXING THE POT/ PTEF BEARING IN GIRDER

PLACING OF GIRDER IN PROPER LOCATION WITH PROPER SAFETY & SUPPOR

FIXING THE POT/ PTEF BEARING IN GIRDER

METHODOLOGY OF CAST IN SITU SLAB1. Reinforcement & Concreting of End & Middle

Diaphram2. Fixing of shuttering3. Placing reinforcement as per drawing &

specification4. Pouring of concrete M40 as per approved mixed

design

Reinforcement & Concreting of End & Middle Diaphram

FIXING OF SHUTTERING

Fig: shuttering

PLACING REINFORCEMENT AS PER DRAWING & SPECIFICATION

POURING OF CONCRETE M40 AS PER APPROVED MIXED DESIGN

Fig: pouring of concrete by boom presure

Fig: boom pressure

THANK YOU