拼宽桥梁桥台锥坡拆除防护施工技术（论文）.pdf

建筑技术开发 Building Technology DevelopmentrS52 C o n s tru c tio n T e c h n o lo g yK y K ^ 2 0 2 1年5月拼宽桥梁桥台锥坡拆除防护施工技术周乃圆，赵文飞，欧阳，郭伟，张涛( 浙江交工集团股份有限公司，抗州 310051 )[摘要 ]在改扩建高速工程中对桥梁工程进行改扩建时，需要将原有桥梁桥台拆除并重建，具体地说就是要将原有桥梁的锥坡及台后部分的路基进行拆除，在此过程中破坏路基稳定性的概率较大，此问题会造成台后路基的垮塌问题并且会破坏路面结构，增加出现结构安全事故以及交通安全事故的概率。阐述了在施工过程中采取合适的防护处理方案，如钢板桩防护等，有利于工程施工的开展，又能充分保证道路结构安全和交通安全。[ 关键词 ] 拼宽桥梁；锥坡拆除；支护[中图分类号 ]U445.6 [文献标志码 ]B [ 文章编号 ] 1001-523X (2021) 09-0075-02光（据技统卷第源统期（据全逢源疚据（刊（计升文（卷遴逢学（刊期统期（据（文光（据期源术刊 Slope of Widened Bridge AbutmentZhou N a i-yu an, Zhao Wen-f e i， Ou Yang, Guo W ei, Zhang Tao[ Abstract ] In the reconstruction and expansion o f the bridge project, the original bridge abutment needs to be dismantled and rebuilt. Specifically, the conical slope o f the original bridge and the subgrade behind the abutment should be demolished. In this process, there is a high probability o f subgrade stability being damaged. This problem will cause the collapse o f the subgrade and damage o f the pavement structure, increasing the probability o f structural safety accidents and traffic safety accidents, the appropriate protection measures taken during the construction process are elaborated, such as steel sheet pile protection, which is conducive to construction o f the project, and can fully ensure the safety of road structures and traffic.[Keywords ] widened bridge ； conical slope removal ； support= - 9 ? ? = W ? H ? ? j )??H4ox??? a : ? H ? fj、。x.=a???)q[-9- ? Y q = ? \ z ? H Q x ? K l???~q=?\z?H0 Q = K ? ? _ ?y:Hwox??kIW?xlq=? \ = | Q H a b c ? ? ? ? )6?H| Q Q o )=y z??j)???6Hq????\?)styz?)TU4?yz,TG?)ab.(23jtH6?,TE?l f?；?iyzz??Qo6?6pq?&r??yzs a?on) ?iq[°Hz???cd??l z?<?G60 沪昆高速公路金华互通至浙赣界段改扩建工程第5 合同项目，采用施工总承包模式，增设柯城互通（上跨杭金衢高速），经后坞停车区，过五里枢纽，在既有樊村隧道分离式路基两侧新建隧道，既有樊村隧道 1-1号和 1-2号隧道左线开挖成四车道路基，过常山东互通、在大洋滩连拱隧道两侧分离增建隧道、过常山互通，跨常山港特（按规划III级航道控制），经常山服务区、常山西互通、球川停车区后，至本项目终点浙赣主线收费站，本项目沿线穿过的主要河流有：衢江、常山港、芳村溪、龙绕溪、虹桥溪等水系。该项目位于华南褶皱系浙东南褶皱带，丽水-宁波隆起的新昌至定海断隆的北东端。衢州之窑上段存在可溶岩地层分布，岩性以白垩系砾岩（砾岩成份为泥质

查看更多收起部分