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在高层建筑施工过程中,随着基坑深度的增加,悬臂挡墙在强度和变形方面不能满足要求时,可在坑内对围护墙加设支撑,支撑结构可承受挡墙所传递的土压力、水压力,它受力合理、安全可靠、能有效地控制围护墙的变形,减少围护构件跨度,降低内力和变形,使支护体系造价经济、受力合理。但内支撑的设置给基坑内挖土和地下室结构的支模和浇筑带来一些不便,需通过换撑加以解决。基于基坑支撑结构施工的重要性,本文主要探讨如何进行有效的施工。
In the process of high-rise building construction, with the increase of the depth of the foundation pit, when the cantilever retaining wall can not meet the requirements in the aspects of strength and deformation, the retaining wall may be provided with support in the pit, and the supporting structure can withstand the earth pressure transmitted by the retaining wall , Water pressure, it is force reasonable, safe and reliable, can effectively control the deformation of the retaining wall, reducing the span of retaining members, reducing internal forces and deformation, so that support system cost-effective, reasonable force. However, the setting of the inner support brings some inconveniences to the excavation of the foundation pit and the support and pouring of the basement structure, which needs to be solved by changing the support. Based on the importance of foundation pit support structure construction, this paper mainly discusses how to carry out effective construction.