某大型深基坑的优化设计研究

某大型深基坑的优化设计研究 English Version

(1.广东省水利水电科学研究院，广东广州 510641；2. 广东省岩土工程技术研究中心，广东广州 510641；3. 武汉大学土木建筑工程学院，湖北武汉 430072)

详细信息

(1. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510610, China; 2. The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510641, China; 3. School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China)

摘要: 通过典型案例，对事故基坑的设计进行了优化，根据土体模量控制位移、土体的、值控制土压力的原理来实现开挖后回填的基坑内外侧土体不相一致的情况，并采用深基坑开挖支护结构计算程序对典型剖面进行了计算，将计算结果与传统方法、有限元方法相比较，说明了优化方案的可靠性。该计算方法可供同类工程参考。
- 深基坑 /
- 优化设计 /
- 坍塌
Abstract: Based on a typical case, the optimal design for the collapsed excavations is performed. The principle of the optimal design is that the displacement is controlled according to the modulus of soil, while the soil pressure is controlled according to the cohesion and friction of soil. Based on this principle, the problem that the soil pressure inside and outside the pit are unequal after backfilling is addressed. Moreover, the typical sections of the pit are calculated by the software for supporting structures of deep excavations. The calculated results are compared with those by the traditional methods and the finite element method, which proves the reliability of the optimal design. The proposed method will give guidance for other similar projects.
- deep excavation /
- optimal design /
- collapse

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