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A Construction Method for Erecting Stiffened Beams Using Movable Cable Clamps

A construction method and a technology of stiffening beams, which are applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc., can solve the problems of wasted construction period, complicated construction procedures, etc.

Active Publication Date: 2021-06-29
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology in the construction of large-scale suspension bridges in valleys that adopt the method of erecting stiffening beams in the middle of the span, the construction procedures are many and complicated, the required assembly and erection time is long, and the construction period is wasted. Construction method of erecting stiffened beam with movable cable clamp

Method used

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  • A Construction Method for Erecting Stiffened Beams Using Movable Cable Clamps
  • A Construction Method for Erecting Stiffened Beams Using Movable Cable Clamps

Examples

Experimental program
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Embodiment 1

[0026] see figure 1 with figure 2 As shown, the embodiment of the present invention provides a construction method for erecting stiffened beams using movable cable clamps, including the following steps:

[0027] Step 101, install a slidable cable clamp 1 on the main cable 2 in the direction close to the main tower 7 (that is, the direction of the side span). 1 Just drive the stiffening beam segment 4 on the main cable 2 to move smoothly. Two groups of slidable cable clips 1 are symmetrically installed on the main cables 2 on both sides of the main tower 7 at the same height. Two sets of slidable cable clamps 1 can slide synchronously on the main cable 2 on both sides of the main tower to the mid-span direction, and use the brake device 6 to control the sliding and positioning of the slidable cable clamps 1 on the main cable 2 , realizing precise control of the sliding speed and fastening position of the slidable cable clamp 1 on the main cable 2 .

[0028] Step 102. Insta...

Embodiment 2

[0034] see figure 1 with figure 2 As shown, the embodiment of the present invention provides a construction method for erecting stiffened beams using movable cable clamps. Compared with embodiment 1, this embodiment differs in that the slidable cable clamp 1 cannot be clamped on the main cable 2 toward When sliding by itself in the mid-span direction, use the pulling device 5 to pull the slidable cable clamp 1 to the designed position, and then release the pulling device 5 . The pulling device 5 of this embodiment is preferably, but not limited to, a winch. The steel wire rope or chain on the winch is fixedly connected to the slidable cable clamp 1, and the pulling device 5 provides the slidable cable clamp 1 with traction in the mid-span direction. , improve construction efficiency.

Embodiment 3

[0036] see figure 1 with figure 2 As shown, the embodiment of the present invention provides a construction method for erecting stiffened beams using movable cable clamps. Compared with embodiment 1, the difference between this embodiment is that before the slidable cable clamp 1 and the main cable 2 are fastened, A gap is reserved between the slidable cable clamp 1 and the main cable 2, and the size of the gap is controllable by adjusting the tightening degree of the screw on the slidable cable clamp 1. In order to reduce the friction between the slidable cable clamp 1 and the main cable 2, lubricating oil or grease is applied on the contact surface of the slidable cable clamp 1 and the main cable 2 to reduce the friction between the slidable cable clamp 1 and the main cable 2. Wear between main cables 2.

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Abstract

The invention discloses a construction method for erecting stiffened beams by using movable cable clamps, and belongs to the technical field of bridge construction. The method includes the following steps: first, install a slidable cable clamp on the main cable close to the direction of the main tower, and use the braking device to control the sliding and / or positioning of the slidable cable clamp on the main cable; secondly, install the slidable cable clamp Install the sling on the top, transport the stiffening beam section to the set bridge position, lift the stiffening beam section to the set height and connect it with the sling; then the brake device controls the slidable cable clamp on the main cable toward The mid-span direction slides by itself. After the slidable cable clamp drives the stiffening beam segment to move to the design position, fasten the slidable cable clamp to the main cable and release the braking device; finally repeat the above steps along the mid-span direction. The direction of the main tower at both ends connects the adjacent stiffening beam segments end to end in turn until the main beam is closed. The invention opens up a new way of erecting beams without completely relying on the cable-loaded crane.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method for erecting stiffened beams by using movable cable clamps. Background technique [0002] Modern suspension bridges are favored by engineers for their super strong spanning ability, and the bridges with the largest spans have all adopted the suspension bridge type. With the country's vigorous construction of the central and western regions, more and more railway and highway projects have broken ground, but the large number of deep mountains and valleys in the western region has become the biggest barrier that project builders must face. Facing the mountains, you can choose tunnels to pass through, and facing the canyons, you can only use bridges to cross them. Since the canyons in the western region are mostly V-shaped deep valleys, it is difficult to set up bridge piers in the valleys, so the bridges must be crossed in one span, that is, the wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 杨齐海何加江冯健翔李石林刘昌珩杨伯澜郑光
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD