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我国自70年代以来对地下工程的挡土、防水方案虽出现了很多新方法,例如:钢筋砼板桩、拉森钢板桩、钢筋砼地下连续墙等,但这些方法其优缺点,共同的特点是:费用高、施工排场较大,并且在挡土墙长度较长时水平刚度显得不足,往往不得不再加圈撑或锚拉、攀桩。本文介绍南京市第一建筑工程公司在上海扬子江大酒店地下施工中,为确保基坑稳定,确保道路、道路下预埋管线的安全,降低工程施工措施费用,加快施工进度,根据具体工程条件采取的多种挡土方案和不同的地下降水方案。与此同时,在与相邻工程施工过程中,由于各工程的情况不同,进度难以协调,造成该工程“先浅后深”施工现实后的处理方案。
Although there have been many new methods for retaining and waterproofing underground projects since the 1970s, such as reinforced concrete sheet piles, Larson steel sheet piles, and reinforced concrete diaphragm walls, these methods have advantages and disadvantages, and common features. Yes: The cost is high, the construction of the stadium is large, and when the length of the retaining wall is long, the horizontal stiffness is insufficient, and often it is necessary to add looping or anchoring and climbing. This article describes Nanjing No.1 Construction Engineering Company in the underground construction of Shanghai Yangtze River Hotel to ensure the stability of the foundation pit, ensure the safety of the pipelines embedded under the roads and roads, reduce the cost of construction and construction measures, and accelerate the construction progress, according to the specific project conditions. A variety of earth-retaining programs and different groundwater programs. At the same time, in the process of construction with adjacent projects, due to the different conditions of each project, it is difficult to coordinate the progress, resulting in a project that will be followed by construction reality after the project is completed.