New-typed Prefabricated Steel Support Design Based On Idea Of Sustainable Development

The evaluation of the design based on "sustainable development" includes not only the material selection, use efficiency, resource recycling, etc. but also the construction or production process, so that the impact on the environment will be minimized in this stage. Engineering construction means more than the production of new products, but more importantly, the using process of equipment itself as the product, so that the equipment during construction have both the subject and object roles. Innovative design of equipment can change its resource consumption in the using process and its environmental impact, and can reflect the resources during production (building) process of the engineering itself as well as the environmental factors.Based on the current low efficiency and waste of non-renewable resources caused by the traditional supporting technology during the construction of traditional strip-type deep foundation pit, this paper, according to the characteristics and requirements of the new construction technology of "trenchless pre-support", designs a new type of large axial force support and the matching earth system, which are both made by the rolled steel, easy in installation and assembly, and can be used repeatedly; it also studies the construction plan of the matched underground continuous wall. With the ABAQUS finite element numerical simulation, the loading of this kind of support in a variety of working conditions, and the factors influencing the stability of the trough section are studied, proving that the system can improve the erection speed of the support for the foundation pit, shorten the deformation time of the slot, improve the containment function of the supporting structure, reduce the impact on the surrounding environment, ensure the safety of the excavation process, effectively improve the efficiency of the foundation pit construction, reduce the consumption of concrete, and thus achieve the in the harmony between economic benefits and ecological benefits during the building process.