Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Semi-reverse construction method for ultra-deep circular foundation pit
The invention belongs to the technical field of geotechnical engineering, and particularly relates to a semi-reverse construction method for an ultra-deep circular foundation pit. The construction method comprises the following steps that dewatering construction is conducted before earth excavation; after the water level drops to a designed depth, the earth of a vertical shaft is excavated to the designed depth, and then crown beams are sequentially constructed in two layers; after crown beam construction is completed, earth excavation continues to be conducted downwards, and linings are constructed layer by layer; earthwork layered excavation and manual chiseling of an underground diaphragm wall are alternately performed, after the chiseling of the underground diaphragm wall is finished, base treatment, cushion layer construction, steel bar binding and formwork installation are performed, and one-time pouring forming is performed. On the basis of the thought of overall top-down construction and local top-down construction, lining construction is conducted in two sections after one section is excavated, the equal-strength time of concrete is shortened through procedure connection, the construction period can be shortened, high practicability is achieved, and the application prospect is wide.
本发明属于岩土工程技术领域，具体涉及一种超深圆形基坑半逆作施工方法。本发明的施工方法包括以下步骤：土方开挖前进行降水施工；水位降至设计深度后，将竖井土方开挖至设计深度，然后分两层依次施作冠梁；冠梁施工完成后继续往下进行土方开挖，并逐层施作内衬；土方分层开挖与人工凿毛地下连续墙穿插进行，凿毛地下连续墙结束后，进行基底处理、垫层施工、钢筋绑扎、模板安装，并一次浇筑成形。本发明基于“整体逆作，局部顺作”思路，开挖一段后分两段进行内衬施工，利用工序衔接缩短混凝土的等强时间，能够有缩短工期，具有较强的实用性，应用前景广泛。
Semi-reverse construction method for ultra-deep circular foundation pit
The invention belongs to the technical field of geotechnical engineering, and particularly relates to a semi-reverse construction method for an ultra-deep circular foundation pit. The construction method comprises the following steps that dewatering construction is conducted before earth excavation; after the water level drops to a designed depth, the earth of a vertical shaft is excavated to the designed depth, and then crown beams are sequentially constructed in two layers; after crown beam construction is completed, earth excavation continues to be conducted downwards, and linings are constructed layer by layer; earthwork layered excavation and manual chiseling of an underground diaphragm wall are alternately performed, after the chiseling of the underground diaphragm wall is finished, base treatment, cushion layer construction, steel bar binding and formwork installation are performed, and one-time pouring forming is performed. On the basis of the thought of overall top-down construction and local top-down construction, lining construction is conducted in two sections after one section is excavated, the equal-strength time of concrete is shortened through procedure connection, the construction period can be shortened, high practicability is achieved, and the application prospect is wide.
本发明属于岩土工程技术领域，具体涉及一种超深圆形基坑半逆作施工方法。本发明的施工方法包括以下步骤：土方开挖前进行降水施工；水位降至设计深度后，将竖井土方开挖至设计深度，然后分两层依次施作冠梁；冠梁施工完成后继续往下进行土方开挖，并逐层施作内衬；土方分层开挖与人工凿毛地下连续墙穿插进行，凿毛地下连续墙结束后，进行基底处理、垫层施工、钢筋绑扎、模板安装，并一次浇筑成形。本发明基于“整体逆作，局部顺作”思路，开挖一段后分两段进行内衬施工，利用工序衔接缩短混凝土的等强时间，能够有缩短工期，具有较强的实用性，应用前景广泛。
Semi-reverse construction method for ultra-deep circular foundation pit
一种超深圆形基坑半逆作施工方法
HU RUCHENG (Autor:in) / GONG ZHENYU (Autor:in) / DU XUECAI (Autor:in) / ZHANG WENTAO (Autor:in) / HU KAIFU (Autor:in) / YANG HONGXIA (Autor:in) / ZHANG XIBAO (Autor:in) / XU QIANWEI (Autor:in) / NIE ZIDONG (Autor:in) / LIU JIE (Autor:in)
12.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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