邻近长江干堤新型防渗隔离体系基础施工研究

Study on Foundation Construction of New Anti-seepage Isolation System near the Yangtze River Main Embankment

在邻堤桥梁建设过程中,桩基施工是一个控制因素,需要解决桩基防渗及岸坡抗滑安全等问题。工程界对防渗的解决方法有很多,如土工膜、防渗墙,但桩基离大堤很近时,以上开挖方法均会对堤防造成安全隐患。通过对左岸大道临堤桩基防渗的3种方案比选,提出了一种新型临近长江干堤桥梁基础防渗隔离体系。经现场实施,防渗效果良好,保证了沿江堤防安全。

In the process of bridge construction near embankment,pile foundation construction is a controlling factor.It needs to solve the problems of pile foundation anti-seepage and bank slope anti-sliding safety.There are many solutions to anti-seepage in the engineering field,such as geomembrane,anti-seepage wall and so on.But the pile foundation is close to the embankment,the above excavation methods will cause potential hazards to the embankment safety.Through three kinds of solutions for the comparison and selection of the anti-seepage schemes of the pile foundation near the embankment of the left bank avenue,a new anti-seepage isolation system of the bridge foundation near the main embankment of the Yangtze River is proposed.The on-site implementation shows that the anti-seepage effect is good,and the safety of embankments along the river is alse ensured.