Hydraulic lifting and upside-down construction method for internal steel tube of chimney

A technology of hydraulic lifting and construction methods, which is applied in the field of building construction, can solve the problems of large hydraulic jacking equipment and steel structure systems, poor hoisting automation of hoisting hoisting methods, and high welding quality requirements, so as to reduce construction costs and reduce installation costs. , the effect of high degree of automation

Inactive Publication Date: 2016-04-20
MCC TIANGONG GROUP
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AI Technical Summary

Problems solved by technology

[0003] The winch hoisting method has the disadvantages of poor hoisting automation, backward technology, and poor safety and reliability; air pressure jacking has the disadvantages of high requirements for welding quality, strict cylinder diameter error and ellipticity; hydraulic jacking method has the disadvantages of huge equipment and steel structure systems. Shortcomings

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  • Hydraulic lifting and upside-down construction method for internal steel tube of chimney

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Embodiment Construction

[0026] The method of the present invention will be described in detail below in conjunction with specific examples.

[0027] Take the 150m high chimney as an example. The design height of the chimney is 150m, and it is sleeve type. The outer cylinder is a reinforced concrete structure with a height of 147m, and there are two inner cylinders, both of which are titanium-steel composite plate steel inner cylinders with a diameter of 3.2m. The outer diameter of the lower part of the outer cylinder is 15m, the inner diameter is 13.9m, the outer diameter of the top is 9.8m, and the inner diameter is 9.3m; the inner side of the chimney is provided with 4 circular cantilever trapezoidal corbels from bottom to top, and an inspection platform is set up, of which the elevation is 50m and 80m , 110m is a steel platform, and 144m is a combined platform.

[0028] The above chimney steel inner tube hydraulic lifting and flipping construction method includes the following steps:

[0029] S1...

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Abstract

The invention provides a hydraulic lifting and upside-down construction method for an internal steel tube of a chimney. The hydraulic lifting and upside-down construction method includes the steps of S1, installing a computer control cabinet, hydraulic pump stations and hydraulic jacks on a steel platform; S2, manufacturing standard sections of the internal steel tube; S3, laying two rails on site and installing a transport trolley on the rails; S4, welding first lifting points and installing anchorage devices and steel stranded wires at the top of the first standard section; S5, lifting a first standard section to a proper height, and transporting a second standard section to an assembly position for assembly and welding; S6, sequentially installing subsequent standard sections, enabling the internal steel tube to descend to the ground when the internal steel tube is lifted to a specific height, and switching to a second lifting point; S7, sequentially installing subsequent standard sections till lifting the internal steel tube is completed. The hydraulic lifting and upside-down construction method has the advantages of high precision, safety, reliability and lower construction cost.

Description

technical field [0001] The invention relates to the technical field of building construction, and mainly relates to a chimney steel inner tube hydraulically lifting and flipping construction method. Background technique [0002] In large industrial buildings such as steel mills, power plants, cement plants, and chemical plants, chimney engineering is a common large-scale structure. In the past, chimney engineering forms include brick chimneys, concrete chimneys and steel chimneys. Concrete chimneys generally use masonry linings. After technological innovation, steel inner cylinders are now tended to be used. Compared with brick linings, steel inner cylinders have the advantages of strong corrosion resistance. However, the steel inner cylinder cannot be realized by the front-mounting method, and only the flip-up method can be adopted. Common inversion methods mainly include winch hoisting method, pneumatic jacking method and hydraulic jacking method. [0003] The winch hois...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/34
CPCE04H12/344
Inventor 王志明赵永鹏
Owner MCC TIANGONG GROUP
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