3results about How to "Increase section size" patented technology

The utility model provides a kind of cantilever beam support structure, it is related to cantilever beam technical field, comprising: inclined column, it is set to the side of support surface, and by lower to upper gradually away from support surface;Multiple crossbeam, each the crossbeam is spaced apart between inclined column and the support surface by lower to upper setting.The utility model has beneficial effect: the particularity of cleverly using the large-angle extension of inclined column is achieved by setting inclined column, by the inside steel beam, four inclined braces, and relevant node strengthening method of design, so that it forms a complete structure system, under the premise of guaranteeing its safety, the cantilever span of cantilever beam can be greatly increased, the room function and building design aesthetic type of existing building industry are increased;The bearing capacity and deformation capacity of entire structure system can be greatly increased by setting shaped steel in concrete beam in the structure device, the problems of large amount of engineering material, large cantilever structure, high cost, cantilever beam easy cracking deformation and other problems can be effectively solved.

This invention discloses a construction method for deep and large foundation pits without the need for replacement supports, belonging to the field of underground structure sequential construction technology. During the main structure construction, after the previous formwork sidewall is completed, only the next steel support is removed; replacement supports are no longer installed, thus eliminating the need for replacement supports. Only the concrete supports are cut, retaining the lintel beams, which function as part of the sidewall, allowing them to play a role in both the excavation and main structure construction phases. The bottom slab ribs are adjusted from triangular bevels to stepped shapes, allowing the scaffold uprights to act vertically on the ribs, ensuring the overall stability of the scaffold. The increased rib cross-sectional dimensions reduce the impact of lateral deformation of the foundation pit on the sidewalls. This invention shortens the construction process, reduces construction costs, ensures foundation pit safety, and has good economic benefits.