Method for dismantling concrete box girder of under-passing closed frame culvert

A technology for concrete box girder and frame culvert, which is applied in the erection/assembly of bridges, bridges, bridge maintenance, etc., can solve the problems of safety hazards in the normal use of closed frame culverts, and achieve high construction efficiency, avoidance of safety hazards, and high operation efficiency. Effect
CN110499718AInactive Publication Date: 2019-11-26BEIJING MUNICIPAL ROAD & BRIDGE
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING MUNICIPAL ROAD & BRIDGE
Publication Date
2019-11-26
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for dismantling a concrete box girder of an under-passing closed frame culvert. The method for dismantling the concrete box girder of the under-passing closed frame culvert comprises the following steps of early-stage preparations, erecting full framing, erecting steel pipe column structures, laying a gantry crane track beam, installing a gantry crane, cutting mainbeam flange plates by adopting a rope saw, eliminating discarded flange plate blocks through hoisting by adopting the combination of the gantry crane and a truck-mounted crane, cutting a main beam box chamber by adopting the rope saw, eliminating discarded main beam box chamber beam blocks through hoisting by adopting the combination of the gantry crane and the truck-mounted crane, and transporting the discarded beam blocks to a designated site by adopting a transportation truck. According to the method for dismantling the concrete box girder of the under-passing closed frame culvert, throughthe design of a temporary support and the cutting steps, the concrete box girder is dismantled by adopting the combination of the truck-mounted crane and the gantry crane; safe and rapid dismantlingof a bridge is achieved; and the method is applicable to rapid dismantling construction of the concrete box girder of the under-passing closed frame culvert in a city bridge.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of bridge construction, in particular to a method for removing a concrete box girder passing through a closed frame culvert with an understructure retained. Background technique

[0002] With the continuous development of my country's urban construction scale, the problem of traffic congestion is becoming more and more serious. Bridge upgrading and reconstruction is one of the effective methods to relieve traffic pressure at present and in the future. With the increase of bridge service time and the continuous increase of vehicle load, some bridges inevitably need different degrees of maintenance, reinforcement or reconstruction.

[0003] Chinese patent 201811041776.2 discloses a construction method for dismantling the superstructure of a cross-line single-box multi-chamber cast-in-place reinforced concrete bridge, including the following steps: enclosing and sealing the perimeter of the bridge to protect th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More