高速公路桥涵搭板底脱空注浆处理施工技术措施应用研究  

APPLICATION RESEARCH ON CONSTRUCTION TECHNOLOGY AND MEASURES OF VOID GROUTING TREATMENT AT THE BOTTOM OF APPROACH SLAB OF EXPRESSWAY BRIDGE AND CULVERT

作　　者：陈磊 陈涛[1] 李富家 Chen Lei;Chen Tao;Li Fu-jia

机构地区：[1]江苏捷达交通工程集团有限公司,江苏淮安223001

出　　处：《建筑技术开发》2023年第8期59-61,共3页Building Technology Development

摘　　要：针对桥涵搭板底部脱空的形成原因及对高速运营潜在的安全影响,为有效处理搭板底部脱空病害,提出采用潜孔干钻配合压力注浆的处理方法,并引入地质雷达与视频内窥镜相结合的注浆效果检测方法。该项工艺在京沪高速公路沂淮淮江段扩建工程得到应用,实践证明,潜孔干钻配合高压注浆辅以地质雷达检测和视频内窥镜检查能够有效处理桥涵搭板底部脱空病害问题,具有良好的推广价值。Aiming at the causes of the bottom void of bridge and culvert approach slab and its potential safety impact on high-speed operation.In order to effectively deal with the bottom void disease of approach slab,the treatment method of down-hole dry drilling combined with high-pressure grouting is proposed,and the grouting effect detection method combining geological radar and video endoscope is introduced.This technology has been applied in Yihuai Huaijiang section expansion project of Beijing Shanghai Expressway.Practice has proved that down the hole dry drilling combined with high–pressure injection combined with geological radar detection and video endoscopy can effectively deal with the problem of void disease at the bottom of bridge and culvert approach slab,and has good popularization value.

关 键 词：搭板脱空 潜孔干钻 压力注浆 地质雷达 视频内窥镜 

分 类 号：U433.8[交通运输工程—道路与铁道工程]