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Research & Use of Bored Post-mud-jack Technology in the Yajiang Bridge

Author: WenHuaFeng
Tutor: ZhangXueSong；ZhouYanJun
School: Chongqing Jiaotong University
Course: Architecture and Civil Engineering
Keywords: Bored pile Karst After grouting pile Mechanism of action Construction technology Carrying capacity
CLC: U445.551
Type: Master's thesis
Year: 2011
Downloads: 38
Quote: 0
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Abstract


\Currently, the complex geological conditions in the mud folder gravel layer or karst geology for foundations , pile foundation construction technology experience and good technical measures in the cave development areas is particularly important to guarantee basic security , research and exploration . Domestic construction case , the bored pile construction technology has been popular in the bridge construction . However , due to the pile construction technology inherent defects , resulting in a pile quality is difficult to guarantee the to overcome construction factors lead to defects , pile end post grouting technology came into being . The pile bearing capacity by using the bottom of the pile grouting technology bridge-building research and test show that the application of the technology to get better play , save basic processing fees , significant economic and technological benefits . Thus , many regions in the country , a variety of post - grouting technology has been widely used . Mainly from friction piles and end bearing pile construction technology and features to the Yajiang bridge pile foundation design using the same pile foundation while using friction piles and end-bearing piles program changes for discussion , and a numerical summary of post grouting technology of construction technology simulation and theoretical analysis to verify grouting technology to improve the pile foundation . At the same time its mechanism of action and its construction technology and to explore how to better apply to the engineering practice . Yajiang Bridge pile grouting technology , further understanding of its mechanism of action, using the finite element method analysis of pile bottom Postgrouting Bored effects of the bearing capacity of the pile diameter , pile length and other factors investigated , summed up the pile after grouting construction technology and the key technology to provide a reference for the application of the technology .

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridge Construction > The works > Foundation engineering > Pile Foundation Construction
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