Prefabricated deep foundation pit supporting technologyThe overall stiffness is large, light weight, quick and convenient installation and removal, can be reused, no construction waste, green energy saving, can provide open construction space, so that the excavation, soil transport and underground structure construction is convenient, compared with the traditional support, can reduce the cost 20%Above, the installation, demolition, excavation and underground structure construction period is shortened40%The above.
Prefabricated prestressed fish belly beam combined steel support Project (also known as: Prestressed steel belly type foundation pit supporting technology) is a kind of used for deep foundation pit supporting, prefabricated prestressed steel support is the stomach beam combination, support, bored pile and jet grouting reinforced concrete pile composite, such as a new support form, mainly USES the synergy, several kinds of supporting system to solve large span complicated working condition of deep foundation pit supporting problem. Through the unique STRESS system of PREstressed fish belly beam support and the advantages of forming a large space between the supporting rods, the construction characteristics of fast, efficient, green and environmental protection, energy saving and consumption reduction are achieved. This technology has been successfully applied in the projects in the southern region and in Shaanxi Province, and has accumulated rich experience in design and construction.
At present, prefabricated prestressed fish belly beam composite steel support technology has been effectively implemented in the project, the maximum excavation depth of the foundation pit 25.1m, the span of application support has been reached in 80m～220m, the excavation area of the foundation pit reaches 44000m2A large number of measured data are obtained. Through the analysis of the measured data, it is further verified that the combined support technology has the characteristics of safety, construction convenience, economy and environmental protection.
The APPLICATION OF PRESTRESSED fish-belly STEEL SUPPORT TECHNOLOGY in engineering shows that the combined system has the characteristics of good stress performance, convenient construction and environmental protection when used in the support of deep foundation pit with large span and complex working conditions.
The vertical stiffness of the prestressed composite steel support system is small, so it cannot be used as a heavy duty construction platform such as construction machinery. However, the walking load of construction personnel, support maintenance load and prestressed operation load should be considered on the support.
Shanghai Qiangqiang Foundation Engineering Co., LTD. 's business covers foundation pit engineering, pile foundation engineering, land and waterFoundation treatment, slope treatment and other engineering fields. around "Excellent technology, reliable process, fast construction" technical requirements, is to provide customers with land, water foundation engineering technical consultation, construction services and other comprehensive solutions of the entity enterprise. Contact Number:400-1002850
