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提出了一种新型的软土基坑支护方法即“堤坝形毛竹土钉排桩基坑支护”。该方法主要是以节能环保型的竹材取代传统高耗能的钢质钉材,以毛竹为基坑侧壁支护排桩,以堤坝形土钉墙替代传统的各排土钉等长或上长下短布置。通过对毛竹力学性能的分析、现场抗拔试验、工程实践及数值模拟,验证该堤坝形毛竹土钉排桩基坑支护理念是正确的,表明毛竹在注浆过程中起到诱导作用可使注浆效果更好、能加深土钉在软土基坑的适用深度、可提高基坑支护的安全系数。
A new type of supporting method for soft soil foundation pit is put forward, that is, “dyke-shaped bamboo soil nailing pile foundation pit support”. The method mainly replaces the traditional high-energy-consumption steel nail material with the energy-saving and environment-friendly bamboo material, and takes the bamboo bamboo-based sidewall support row pile as the foundation, Long under the short layout. Through the analysis of mechanical properties of bamboo, on-site pull-up test, engineering practice and numerical simulation to verify the ditch dam-shaped soil nailing pits pit support philosophy is correct, indicating that the role of bamboo in the grouting process can induce Grouting better, can deepen the application of soil nail depth in the soft soil foundation pit can improve the safety factor of foundation pit support.