The water stop between the pier cap and the steel pipe pile is a key process for the installation of prefabricated piers and abutments.It is difficult to install the water stop for prefabricated piers and abutments because the construction of post cast holes needs to be carried out in a dry working environment.In order to improve the construction efficiency of pier and abutment installation and improve the water stop quality,the tray lifting water stop scheme and steel hoop water stop scheme are designed according to the project requirements,and the steel hoop water stop scheme is optimized from the operational and economic aspects to carry out the prefabricated pier and abutment water stop construction.The hoop is connected to the hanging beam at the top of the steel pipe pile through the fine rolled threaded reinforcement.A single peak water stop is set between the top surface of the hoop and the bottom of the pile cap.The lifting beam compresses the water stop to achieve horizontal water stop,and the compression rubber plate is tightly held between the hoop and the steel pipe pile to achieve vertical water stop.Through the same scale simulation experiments and optimization improvement based on the test results,the steel hoop water stop process can meet the construction water stop demand,and realize the dry operation environment under the water head difference of 8 meters.It has the advantages of high efficiency,good water stop effect,and recyclable use.
关键词
预制墩台/止水技术/钢抱箍/模拟试验
Key words
prefabricated piers and abutments/water stop technology/steel hoop/simulation experiment
维普
万方数据