在新建房屋中,遇到与老房的山墙或外纵墙连接时,最常用的是挑梁法,即新建房屋采用挑梁,与老房基础脱开,留出沉降缝。但是,新建房屋的基础增设挑梁,要增加拉梁或连系梁,有的还要增加挑梁支座基础,造成结构复杂。如果上部结构荷载较大,则挑梁需有很大的截面高度,却由于老房基础埋深所限,挑梁甚至露出地面,很难处理。近年来,我们在一些新老房屋邻接建设工程中,采用了新建房屋端桩法及基础咬进法,这两种方 In the newly built houses, the girder method is most commonly used when connecting with the gable or outer vertical wall of the old house. That is, the newly-built houses adopt pick beams and are separated from the old house foundation to leave a settlement joint. However, the building of new houses is based on the addition of concrete beams, beams or tie beams must be added, and some beams must be added to support the foundations of the beams, resulting in a complicated structure. If the superstructure loads are large, the beam must have a large section height. However, due to the limited depth of the foundation of the old house, the beam is even exposed to the ground and is difficult to handle. In recent years, we have used the newly-built house end-pile method and the foundation bite-in method in the construction projects adjacent to old and new houses.