Self-balancing arch rib vertical rotation and lift construction method

A construction method and self-balancing technology, applied in the direction of erecting/assembling bridges, bridges, buildings, etc., can solve the lack of systematic discussion of structural measures for the closing method of arch ribs, the lack of unified calculation method for the calculation of buckle cable force, and the formation of arch ribs into bridges. The problems such as the large difference between the states can achieve the effect of simple and clear transmission path, convenient design, and reduced construction difficulty.

CN102433843BInactive Publication Date: 2013-12-25TENGDA CONSTR GROUP CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a self-balancing arch rib vertical rotation and lift construction method. The method has the following beneficial effects that: the terrain characteristics of the plains are considered, the idea of turning vertical force into horizontal force in the traditional vertical rotation method is abandoned, the characteristic of strong vertical bearing capacity of the tower is fully used, and the position of the tower, arrangement of upper and lower anchor points of the system and arrangement of various standard steels of the tower are improved to ensure the transfer path of the tower load to be simple and definite, ensure the horizontal force in the vertical rotation process to be as low as possible and be even zero and form a tower system with strong resistance and high horizontal force, thus utilizing the capacity of the tower to balance the horizontal force generated in the vertical rotation process and forming the self-balancing arch rib vertical rotation and lift technology, without rear anchor cables; therefore the construction difficulty of arch bridges, especially large span arch bridges in the plains can be greatly reduced. The method provided by the invention has the characteristics of high construction safety, good economy, strong operability and the like and is suitable for installation of arch ribs in the plains.
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Description

technical field

[0001] The invention relates to a construction method for vertically rotating and lifting arch ribs in bridge construction. Background technique

[0002] Because the bridge swivel construction has the characteristics of saving hoisting costs, reducing high-altitude operations, convenient and flexible construction operations, safety, reliability, and good integrity, easy adjustment and control of structural alignment and internal forces, and avoiding interference to normal traffic under the bridge, it has become a popular choice for bridges at home and abroad. It has been widely used in construction and is constantly developing. At present, there are mainly two changes in the vertical rotation technology of arch ribs. One is the vertical rotation technology formed for the special geographical conditions in mountainous areas - negative angle vertical rotation. The traditional vertical rotation is assembled at a low level, and then raised to high The negative a...

Examples

Embodiment Construction

[0063] Refer to attached picture. The arch rib self-balancing vertical rotation lifting construction method provided by the present invention adopts the arch rib self-balancing vertical rotation lifting construction method, comprising the following steps:

[0064] (1) Concrete arch feet 17 are poured at both ends of the bridge, the embedded arch ribs are buried in section 1, and arch rib embedded sections 1 protrude from the surface 18 of concrete arch feet, and the tire frame 2 is assembled on the bridge deck 100;

[0065] The lower hinged seat 11 is arranged on the upper end of the concrete arch foot 17, and the lower hinged seat 11 is embedded in the embedded section 1 of the pre-embedded arch rib. Type structure, the hinge shaft hole 13 is set on the ear plate, and the lower hinge seat is provided with 2 pairs of connection positions 14, each pair of connection positions is used for connecting wires, and the positions of the two pairs of connection positions are located at...