Adjustable tower crane steel platform foundation

Abstract

The invention discloses an adjustable tower crane steel platform foundation which comprises a foundation platform and latticed columns. The foundation platform is fixedly connected with a tower crane foundation section, and the latticed columns are fixedly connected with the foundation platform. The latticed columns are fixedly arranged in foundation piles of a tower crane. The foundation platform is a steel platform base welded by H-type steel and comprises steel beams of a two-layer structure, the steel beams are fixedly connected up and down, the auxiliary steel beam is arranged on the lower layer and formed by four pieces of H-type steel in a fixedly-connected mode, and the four pieces of H-type steel are distributed to be shaped like the Chinese character 'kou'. The supporting steel beam is arranged on the upper layer and formed by two pieces of H-type steel in a combined mode, and the two pieces of H-type steel are arranged in parallel. The supporting steel beam is fixedly connected to the top face of the auxiliary steel beam in a centered mode. The top ends of the latticed columns are provided with connecting column caps. The bottom face of the auxiliary steel beam is fixedly connected to the top faces of the connecting column caps, and the tower crane foundation section and the supporting steel beam are welded or connected through high-strength bolts. The double-layer adjustable structure steel beams are used as the steel platform base of the tower crane, a pile foundation is easily and sufficiently used, the same platform base is suitable for installing tower cranes in different types, the construction cost is further reduced, and the stress conditions and the anti-dumping capacity of the tower crane foundation can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of large-scale tower crane installation, and relates to a tower crane installation platform foundation, in particular to an adjustable tower crane steel platform foundation. Background technique [0002] In the construction process of a large number of high-rise buildings, due to the need for vertical transportation, tower cranes (tower cranes for short) are widely used in large and medium-sized cities due to their advantages such as low usage fees, flexible working heights, and large working coverage areas. on the construction site. [0003] However, looking at the construction sites of tower cranes at home and abroad, there are many examples of various safety accidents. Some are due to the design problems of the tower crane itself, some are due to violations of safety operating regulations, and some are due to improper handling of emergencies; however, a considerable proportion of the various safety accid...

AI Technical Summary

Problems solved by technology

If the center distance of the pile foundation of the tower crane is too small, the deformation of the pile foundation will inevitably increase due to the pile group effect, and the vertical support stiffness of the pile foundation will be reduced due to the interaction between piles and soil, so the bearing capacity of the pile cannot be effectively exerted.

[0008] 2. Everyone in the industry knows that the center distance of the pile foundation directly determines the size of the pile top reaction force, and also affects the diameter, length and cost of the pile foundation

[0009] Obviously, in order to make full use of the bearing capacity of single piles, the pile distance should be increased as much as possible, and if the pile distance is increased, a very complicated calculation task is faced: the pile foundation center distance of the above-mentioned X-shaped steel beam cap must be accurately calculated, etc. Dimensions and stress conditions are difficult for ordinary construction technicians

[0010] And at this time, if the steel beam is deformed or the vibration is too large, it is very easy to cause the tower crane to be unable to use normally or even to overturn the safety accident.

[0011] 3. Since it only uses a single-layer X-shaped steel platform base, the steel platform base with the same layout is only suitable for the installation of one type of tower crane. Once the model of the tower crane changes, the foundation cap cannot be used.

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