目前现浇混凝土工程中穿墙螺栓孔多为在胶（竹）合板面上开孔，不但损坏了大模板板面，而且孔缘易破损，加上套管在拧紧螺杆时紧顶孔缘更有损于板面。也有在大模板宽１２００ｍｍ间设１根竖向槽钢１０，既起竖向背肋作用，又可在槽钢上开穿墙螺栓孔。但由于大模板厚度为７... In the cast-in-place concrete project, most bolt holes through the wall are holes in the surface of the plastic (bamboo) plate. This not only damages the surface of the large form plate, but also the edge of the plate is easy to be damaged. In addition, the tight end of the hole is tight when the sleeve is tightened. Detrimental to the board surface. There is also a vertical channel steel 10 set between a large plate width of 1200mm, which functions as a vertical back rib, and can also open a wall bolt hole in the channel steel. However, due to the large template thickness of 7...