带横梁外挂桩板墙在国道245线巴中南连接线的应用与监测

Application and Monitoring of External Pile Wall with Beam in Connecting Line Southern Bazhong of National Highway 245

国道245线巴中南连接线位于广巴高速巴中南出口至南杨大桥之间,以填方形式通过堆积体进行施工,填方高度在0~10.5 m,连接线右侧紧靠常年受河水冲刷、山体滑坡隐患较大的巴河河道。施工中采用带横梁外挂桩板墙支护形式的构造,用于确保路基稳定。结合工程地址的地质水文,以及与其他支护方式结构的对比分析,根据这种支护方式的技术原理,确定带梁外挂桩板墙的技术方案并制定相应的监控方式,动态监控这种新型支护结构的受力状况,从而推动山区公路工程支护结构的多样化发展。

The National Highway 245 southern Bazhong Connecting line is located between the Guangyuan-Bazhong Expressway southern Bazhong exit and Nanyang Bridge.It is constructed in the form of filling through the accumulation body.The filling height is 0~10.5 m.The construction adopts the form of pile wall support with beam,which is used to ensure the stability of subgrade.Combined with the geology and hydrology of the engineering address,as well as the comparative analysis with other supporting structures,according to the technical principle of this support mode,determine the technical scheme of external hanging pile wall with beam and formulate the corresponding monitoring mode,dynamic monitoring of the stress condition of this new support structure,so as to promote the diversified development of mountain highway engineering supporting structure.