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盐田国际行政办公大楼场地浅层由填石填海而成,填石层厚度约10 m,填石粒径20~80 cm;为了满足地下室结构和桩基础施工需要,基坑开挖深度一般不小于8.7m,局部达到14.4 m,基坑开挖支护难度极大;因此,选择合适的基坑支护方案就显得尤为重要,本工程从众多支护方案中选择了放坡开挖加封水帷幕方案,从设计计算上确保基坑及周边建筑物安全,从后期实施看,方案经济合理、安全可靠。
Yantian International Executive Office building shallow ground by filling stone reclamation, filling layer thickness of about 10 m, diameter of 20 ~ 80 cm; In order to meet the basement structure and pile foundation construction needs, excavation depth is generally not Less than 8.7m and 14.4m locally, it is very difficult to excavate and support the foundation pit. Therefore, it is very important to select the appropriate foundation pit support scheme. The project selects the grading excavation and sealing water from many supporting schemes The curtain scheme ensures the safety of the foundation pit and the surrounding buildings from the design calculation. From the later implementation, the scheme is economically reasonable, safe and reliable.