Prestressed steel belly type foundation pit supporting technology, which is based on the principle of prestressed, in view of the traditional concrete support, steel support of foundation pit deformation control ability, through a large number of engineering research and application practice, developed a kind of deep foundation pit support structure within the system, it is composed of vertical retaining wall, prestressed the stomach beam, pre coping binder, purlin, gusset (to stay), bracket, three The plane prestressed support system and three-dimensional support structure system made of high strength bolts are composed of angular connectors and vertical columns, which are safe and reliable.
Prestressed fish-belly steel bracing for foundation pittechnology,It's based on the principle of prestress,Aiming at the deficiency of traditional concrete inner bracing and steel bracing on the deformation control ability of foundation pit,Through a large number of engineering research and practical application,A kind of inner supporting structure system of deep foundation pit is developed,It is composed of vertical retaining wall, prestressed fish belly beam, prepressed jacking device, enclosing purlin, Angle brace (opposite brace), calf leg, triangular connector, vertical column, etc., and is connected by high-strength bolts Plane prestressed support system and three-dimensional support structure system, safe and reliable.
Compared with traditional concrete inner bracing and steel bracing,The overall stiffness and stability of the support system are greatly improved,Combined with remote real-time monitoring system,The foundation pit displacement can be effectively and precisely controlled,Greatly reduce the deformation of foundation pit. This technology has made a great breakthrough in the inner support technology of deep foundation pit,It is the most advanced internal support technology in the world.
Comparison of support:
Traditional coagulationSoil support, steel pipe support:
(1) The supporting rod is dense
(2There is little room for digging
Steel support for prestressed fish-belly foundation pit
(1) The supporting rod is relatively thin
(2There is plenty of room for digging
Technical Advantages:
1Safety: compared with the traditional support system,Prestressed fish-belly steel bracing for foundation pitApply sufficient prestress before opening the foundation pit,Most of the compression deformation of the support is eliminated, so as to improve the safety of the foundation pit supporting structure,The deformation of foundation pit is reduced. Digging in the process of foundation pit excavation,The prestressed fish-belly steel structure support and support structure can deal with the larger soil and water pressure or the unexpected construction load,Adjust the prestress by loading device and other measures,It can ensure the safety of supporting structure and control the deformation of surrounding soil,Effectively protect the foundation pit surrounding construction(constitutive)Environmental safety of buildings, municipal roads and pipelines. In order to realize effective monitoring of soil and water pressure on the side wall of foundation pit and deformation of the enclosure structure,Adopt multifunctional monitoring and warning system,Thus, the safety risk of foundation pit supporting structure is completely eliminated.
2Environmental benefit: the structure system with high stiffness and high stability can effectively improve the safety degree of foundation pit,High precision technology requirements ensure the quality of foundation pit retaining structure,Significantly reduce the underground space development and construction to the surrounding construction(constitutive)Environmental impact of buildings, municipal roads and pipelines. Component materials are all recovered and reused,In line with the national industrial policy of energy conservation and emission reduction,It is green construction technology.
3, economic benefits:Prestressed fish-belly steel bracing for foundation pitProvide open construction space,Make the excavation, soil and underground structure construction convenient,Not only significantly improve the underground engineering construction conditions,Moreover, the construction period and cost of the enclosure structure installation, demolition, earthwork excavation and main structure construction are greatly reduced. Compared to traditional support,This method reduces the cost20%The above,The construction period of installation, demolition, excavation and underground structure is shortened40%The above.
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", construction fast "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: 400-100-2850
