Safe and reliable construction system for replacing columns by sustaining beams supported by columns and construction method for replacing columns by sustaining beams supported by columns
A joist-to-column replacement and construction method technology, which is applied in building maintenance, construction, building construction, etc., can solve the problem that the force of the supporting structure, the deformation of the beam cannot be accurately tested and controlled, and the structural displacement, settlement, and stress are difficult to carry out. Precise control and other issues to achieve the effect of avoiding high-altitude operations, preventing cracking, and preventing instability
Inactive Publication Date: 2014-04-30
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology
However, in the process of column load unloading, the displacement, settlement, stress, etc. of the structure will be difficult to accurately control, especially when the column needs to be completely disconnected, the force of the supporting structure and the deformation of the beam cannot be accurately tested and controlled
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Embodiment 1
[0036] The sales department of a residential area has three floors above ground and one floor underground (partly two floors), reinforced concrete frame structure, column 3 height 5.7m, column cross-section 600mm×600mm, beam raft foundation. Due to careless operation during construction, the two frame columns in the basement were damaged to varying degrees. After on-site inspection, it was necessary to replace and reinforce the concrete at the defective parts of the columns.
[0037] In order to ensure safety, before the joist is replaced, the construction party builds a full house of scaffolding 5 around the column 3 as a temporary support. The horizontal spacing of the vertical poles of the scaffolding 5 is 1.2m, and the step height is 1.5m. The joist and column replacement construction process is described in detail below:
[0038] On the bottom of the beam 2 around the column 3, an underpinning supporting steel pipe is set. This project uses a steel pipe with a diameter of...
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The invention discloses a safe and reliable construction system for replacing columns by sustaining beams supported by the columns and a construction method for replacing the columns by sustaining the beams supported by the columns. The safe and reliable construction system comprises a plurality of supporting structures for replacing the columns by sustaining the beams supported by the columns, a computer, a static strain tester and a plurality of strain gauges, wherein each supporting structure for replacing the columns by sustaining the beams supported by the columns comprises a support, a base, a jack and a dial indicator; the bases are arranged on the ground; each jack is arranged on the corresponding base; the jack is provided with the corresponding support which is used for supporting the beams; each base is provided with the corresponding dial indicator for measuring supporting jacking amount; the outer wall of each support is provided with the corresponding strain gauges; each strain gauge is connected with the static strain tester of the corresponding supporting structure for replacing the columns by sustaining the beams supported by the columns through a corresponding signal line; and each static strain tester is connected with the corresponding computer. Loads of the columns are completely born by the supporting structures in a construction process of replacing the columns by sustaining the beams supported by the columns, and deformation of the beams is accurately controlled. Moreover, in a column load unloading process, stress of the supporting structures can be monitored in real time, and the supporting structures are ensured to be safe all the time. In a construction process, the structure stress of the safe and reliable construction system is clear, the deformation of the beams is controllable, and the construction process is safe and reliable.
Description
【Technical field】 [0001] The invention belongs to the technical field of building structure reinforcement in civil engineering, and in particular relates to a safe and reliable joist and column replacement construction system and a construction method thereof. 【Background technique】 [0002] In actual engineering, the joist-to-column reinforcement method is usually used for the reinforcement treatment of low concrete strength of columns and serious defects in local concrete. With the continuous development of concrete structure strengthening technology, the method of replacing joist and column is more and more used in practical engineering. In recent years, scholars at home and abroad have carried out research and practice on the joist-for-column reinforcement method. The usual construction method is: firstly, use the support device to unload the load borne by the column, secondly replace the defective part of the concrete, and finally unload the replaced part of the concre...
Claims
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IPC IPC(8): E04G23/02
Inventor 王建平范力温鹏辉穆卫平李妍赵笑男
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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