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基于对软土深基坑工程中孤岛型古建筑的保护要求,在古建筑周围采用SMW工法桩+多道圈梁+坑底高压旋喷桩加固的支护方式,并采用连系梁将孤岛的支护体系与外围大基坑支护体系进行连接。采用PLAXIS有限元计算程序,对基坑开挖各施工工况进行模拟。并在基坑开挖全过程中,采用信息化施工,对古建筑进行了全方位的跟踪监测。有限元分析结果和监测数据表明,该支护方式有效地控制了孤岛型古建筑的变形。该支护方式值得在今后类似工程中推广使用。
Based on the protection requirements for the ancient island-type buildings in deep excavation engineering in soft soil, the support methods of SMW method pile + multi-lane ring beam + pit rotary high pressure jet grouting pile reinforcement are adopted around the ancient buildings, Of the support system and the surrounding large pit support system connection. PLAXIS finite element program is used to simulate the excavation of each construction conditions. And excavation in the whole process, the use of information technology, ancient buildings conducted a full range of tracking and monitoring. The results of finite element analysis and monitoring data show that this supporting method effectively controls the deformation of the ancient island-type buildings. The support mode is worth promoting in similar projects in the future.