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随着经济发展的日益加快,城市建设越来越集中化。在城市内部进行高层建筑的基坑开挖必然会受到周边复杂环境的影响,因此在基坑周边环境影响下基坑开挖的合理方案选取就有着更高的要求。以某地区基坑开挖为案例,定量分析了基坑周边有汽车动荷载作用下二元结构边坡合理开挖方案。通过建立基坑开挖模型,模拟了分步开挖和分步跳挖两种开挖方式,分析得出分层跳挖是最有利于保持基坑稳定性的开挖方式。
With the accelerating economic development, urban construction is more and more centralized. The excavation of foundation pit in high-rise building in the city will inevitably be affected by the complex surrounding environment, so there is a higher demand for the selection of a reasonable scheme for excavation of foundation pit under the influence of the surrounding environment of the foundation pit. Taking excavation of a foundation pit in a certain area as a case, a reasonable excavation scheme for the slope with binary structure under the dynamic load of the vehicle around the foundation pit is quantitatively analyzed. Based on the excavation model of foundation pit, two kinds of excavation methods such as step excavation and step excavation are simulated. It is concluded that excavation by stratified excavation is the most favorable excavation method to maintain the stability of foundation pit.