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Main tower lower cross beam support pre-pressing device and pre-pressing method thereof

A beam support and main tower technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of complex operation process, inaccurate preload data, and inability to guarantee the direction of force application, and achieve simple application process, Good adjustment effect and uniform force

Active Publication Date: 2020-08-25
陕西中立检测鉴定有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that the above-mentioned existing jack preloading method cannot guarantee the direction of the applied force, the operation process is complicated, and the data of the preloading measurement is inaccurate, the present invention proposes a preparation preloading device for the lower beam of the main tower and a preloading method thereof. The specific technical scheme is as follows:

Method used

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  • Main tower lower cross beam support pre-pressing device and pre-pressing method thereof
  • Main tower lower cross beam support pre-pressing device and pre-pressing method thereof
  • Main tower lower cross beam support pre-pressing device and pre-pressing method thereof

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Embodiment 1

[0036] see figure 1 and figure 2 , the main tower lower beam support preloading device of the present embodiment comprises column 2, beam 3, tensioning mechanism, transmission mechanism, rotation drive mechanism and bottom support frame, and tensioning mechanism has two, is symmetrically arranged on column 2 respectively Outer side, column 2 has 5, is arranged on the below of beam 3 respectively to support beam 3, is provided with balance clamp block, tension column 6 and tension column limit piece 7 on the tension mechanism, is provided with on beam 3 Mounting hole, the upper part of the mounting hole is provided with a balance clamp installation groove, the balance clamp is fixed in the balance clamp installation groove, the size of the balance clamp is larger than the aperture of the installation hole, the top of the tension column 6 passes through the installation hole and the balance clamp block connection, the bottom of the tension column is connected with the tension ...

Embodiment 2

[0040] The preloading device for the lower beam support of the main tower in this embodiment includes a column 2, a beam 3, a tensioning mechanism, a transmission mechanism, a rotary drive mechanism and a bottom support frame. There are three tensioning mechanisms, which are symmetrically arranged on the outside of the column 2 , there are 7 upright columns 2, which are respectively arranged under the beam 3 to support the beam 3. The tensioning mechanism is provided with a balance clamp, a tensioning column 6 and a tensioning column limiter, and a mounting hole is arranged on the beam 3. , the upper part of the mounting hole is provided with a balance clamp installation groove, the balance clamp is fixed in the balance clamp installation groove, the size of the balance clamp is larger than the aperture of the installation hole, and the top of the tension column 6 passes through the installation hole and is connected with the balance clamp , the bottom of the tensioning column ...

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Abstract

The invention provides a main tower lower cross beam support pre-pressing device and a pre-pressing method thereof, and belongs to the technical field of civil engineering construction devices. The device specifically comprises a stand column, a cross beam, a tensioning mechanism, a transmission mechanism, a rotary driving mechanism and a bottom supporting frame. The stand column is arranged belowthe cross beam to support the cross beam; the tensioning mechanism is arranged below the cross beam; a mounting hole is arranged in the cross beam; the tensioning mechanism penetrates through the mounting hole and extends to an upper part of the cross beam; a top size of the tensioning mechanism is greater than an aperture of the mounting hole; and the tensioning mechanism is further connected with the transmission mechanism, the transmission mechanism is connected to the bottom supporting frame, the stand column penetrates through the bottom supporting frame, the rotary driving mechanism isconnected to the transmission mechanism, a vertically-downward pulling force is applied to the cross beam through the transmission mechanism and the tensioning mechanism, and a vertically-downward pre-pressing force is applied to the stand column through the cross beam. According to the main tower lower cross beam support pre-pressing device, stress balance of the two sides of the stand column canbe guaranteed, pressure borne by the stand column is ensured to be vertically downward, and a pre-pressing force applying process is simple.

Description

technical field [0001] The invention belongs to the technical field of civil engineering construction devices, and relates to a preloading construction device, in particular to a preloading device for a main tower lower beam support and a preloading method thereof. Background technique [0002] The commonly used preloading construction method in engineering is the jack preloading method, which is widely used in the preloading of building cantilever construction brackets. The jack preloading method is characterized by flexible construction and is based on the principle of continuous beam prestressed tensioning technology. The specific preloading process is as follows: divide the preloading area according to the distribution of the structure load, and then determine the specific force application position of the preloading jack, and then install the steel strand between the preloading beam and the cap, and use the jack to lift the steel The twisted wires are tensioned so that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 吕刚粟海涛
Owner 陕西中立检测鉴定有限公司
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