CN221798178U - A three-way temporary anchoring device for cable-stayed bridge steel main beam construction stage - Google Patents

Abstract

The utility model discloses a three-way temporary anchoring device for the steel main beam of a cable-stayed bridge during the construction phase, comprising a transverse wind-resistant temporary anchoring device, a vertical temporary anchoring device and a longitudinal temporary anchoring device; the transverse wind-resistant temporary anchoring device is composed of a pre-embedded square pad and a transverse pre-embedded steel bar, and is arranged at both ends of the crossbeam; the vertical temporary anchoring device is composed of a reserved concrete pad and a fixing rod; the longitudinal temporary anchoring device is composed of a damper pier top connector and a connecting rod; the utility model patent effectively limits the three-way displacement of the main beam during the construction process, provides more precise control for its subsequent construction, and significantly improves the construction efficiency and the overall safety of the bridge.

Description

A three-way temporary anchoring device for cable-stayed bridge steel main beam construction stage

Technical Field

The utility model belongs to the technical field of cable-stayed bridge construction machinery, and in particular relates to a three-way temporary anchoring device used in the construction phase of a steel main beam of a semi-floating system cable-stayed bridge.

Background Art

The structural design of the semi-floating system cable-stayed bridge adopts an efficient cable-stayed structure, which enables the load of the bridge to be evenly distributed, effectively reduces the deadweight of the bridge, and improves its spanning capacity. However, under the canyon terrain conditions, the 0# tower area of the cable-stayed bridge is affected by wind and construction disturbances during the construction process, which can easily cause the position of the 0# block to deviate, thereby having a negative impact on the subsequent construction line control and construction progress of the main beam. In response to this prominent problem, a three-way temporary anchoring device for the steel main beam construction stage of the semi-floating system cable-stayed bridge is proposed to ensure the fixation of the position of the 0# block of the cable-stayed bridge during the construction process, the linear control of the main beam during the construction process, improve the construction efficiency, reduce the linear control cost of the main beam during the subsequent construction process, and enhance the overall safety of the bridge.

Utility Model Content

In view of the problem of displacement of the cable-stayed 0# block during the construction process, the utility model aims to provide a three-way temporary anchoring device for the steel main beam construction stage of a cable-stayed bridge, so as to improve the construction quality, shorten the construction period and enhance the overall safety of the bridge.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A three-way temporary anchoring device used in the construction stage of a cable-stayed bridge steel main beam comprises a transverse wind-resistant temporary anchoring device, a vertical temporary anchoring device and a longitudinal temporary anchoring device.

Preferably, the transverse wind-resistant temporary anchoring device comprises a pre-embedded square pad and transverse pre-embedded steel bars, and the transverse wind-resistant temporary anchoring device is arranged at both ends of the longitudinal beam;

There are multiple transverse embedded steel bars, which are arranged inside the main tower crossbeam; one end of the embedded square pad is fixedly connected to the middle of the multiple transverse embedded steel bars, and the other end is welded to the longitudinal beam; the gap between the longitudinal beam and the embedded square pad is filled with padding.

Preferably, the vertical temporary anchoring device comprises a reserved concrete pad and a fixing rod which are integrally cast and horizontally connected to the main tower;

The reserved concrete pad is integrally cast with the main tower beam;

The longitudinal beam is prefabricated from multiple sections, including a connected 0# longitudinal beam and a 1# longitudinal beam;

One end of the fixing rod is embedded in the embedded concrete pad, and the other end extends out of the top of the reserved concrete pad. The extended end passes through the bottom of the 0# longitudinal beam. The extended end is provided with an external thread, and the fixing rod is fixed at the end by a double nut.

Preferably, the longitudinal temporary anchoring device comprises a damper pier top connector and a connecting rod;

There are two damper pier top connectors, which are connected to the main tower cross beam and the 1# longitudinal beam respectively;

The connecting rod is arranged along the longitudinal direction of the entire bridge, and the connecting rod is connected to the damper pier top connecting pieces at both ends.

Preferably, the middle of the connecting rod is a hollow cylinder, a bolt hole is arranged at the end of the connecting rod, and the damper pier top connector is connected to the connecting rod by bolts.

Preferably, the 1# longitudinal beam is connected to the damper pier top connector via vertical bolts.

The beneficial effects of the utility model are:

1. The stability of the main beam during the construction of the 0# block was improved, ensuring the control of the linear shape and quality of the steel main beam in subsequent construction.

2. Pre-cast and pre-embedded connectors are used as fixed structures, which are safe and reliable. The connectors are all recyclable components and fixed to the permanent nodes of the main bridge, which reduces the impact on the environment and reduces subsequent costs.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

FIG1 is a schematic structural diagram of a temporary transverse wind-resistant anchoring device;

FIG2 is a schematic structural diagram of a vertical temporary anchoring device;

FIG. 3 is a schematic structural diagram of a longitudinal temporary anchoring device.

As shown in the figure: 1-embedded square pad, 2-transverse embedded steel bars, 3-reserved concrete pads, 4-fixing rods, 5-double threaded bolts, 6-damper pier top connectors, 7-connectors, 8-embedded longitudinal steel bars, 9-vertical bolts, 10-longitudinal beams, 11-main tower cross beams, 12-main towers, 13-pads, 14-supports, 15-0# longitudinal beams, 16-1# longitudinal beams, 17-pads.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

In the description of the present invention, it is necessary to understand that the terms "length", "width", "upper",

The directions or positional relationships indicated by "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

As shown in Figures 1-3, the utility model discloses a three-way temporary anchoring device for use in the construction phase of a cable-stayed bridge steel main beam, including a transverse wind-resistant temporary anchoring device, a vertical temporary anchoring device and a longitudinal temporary anchoring device.

The transverse wind-resistant temporary anchoring device includes a pre-embedded square pad 1 and transverse pre-embedded steel bars 2, which are arranged at both ends of the longitudinal beam 10.

The vertical temporary anchoring device comprises a reserved concrete pad 3 and a fixing rod 4 which are integrally cast and horizontally connected with the main tower.

The longitudinal temporary anchoring device includes a damper pier top connecting piece 6 and a connecting rod 7 .

There are multiple transverse embedded steel bars 2, which are arranged inside the main tower cross beam 11. The embedded square pad 1 is located in the middle of the multiple transverse embedded steel bars 2, and the two are welded together. The end of the embedded square pad 1 extends out and is attached to the longitudinal beam 10 and welded at the end. The gap between the longitudinal beam 10 and the embedded part is filled with a pad 13; in this way, the longitudinal beam 10 is fixed in the transverse direction.

The reserved concrete pad 3 and the main tower cross beam 11 are cast integrally.

The longitudinal beam 10 is prefabricated from multiple sections, including a 0# longitudinal beam 15 and a 1# longitudinal beam 16 connected to each other.

One end of the fixing rod 4 is embedded in the embedded concrete pad 3, and the other end extends out of the top of the reserved concrete pad 3. The extended end passes through the bottom of the 0# longitudinal beam 15. The extended end is provided with an external thread and is fixed at the end by a double nut 5.

The fixing rod 4 is made of precision-rolled threaded steel.

There are two damper pier top connectors 6, which are respectively arranged on the main tower cross beam 11 and the 1# block longitudinal beam 16. The damper pier top connectors 6 are respectively connected to the main tower cross beam 11 and the 1# block longitudinal beam 16 by bolts.

The connecting rod 7 is a hollow cylinder in the middle and is arranged longitudinally along the entire bridge. Bolt holes are arranged at the end of the connecting rod 7. The damper pier top connector 6 is connected to the connecting rod 7 by bolts; the 1# longitudinal beam 16 is connected to the damper pier top connector 6 by vertical bolts 9.

The support 14 is used for the longitudinal temporary restraint rear support, and a cushion block 17 is provided between the 0# longitudinal beam 15 and the main tower cross beam 11.

The construction method of the utility model is as follows:

Use the tower crane to lift the 0# block longitudinal beam 15 at both ends of the 0# block to the top of the fixing rod 4, slowly lower the 0# block longitudinal beam 15, so that the fixing rod 4 passes through the bottom of the 0# block longitudinal beam 15, and the 0# block longitudinal beam 15 falls onto the reserved concrete pad 3.

It is fixed by a double nut 5 at the end of the fixing rod 4.

The gap between the embedded square pad 1 and the longitudinal beam 10 is filled with the pad 13. After the pad 13 is filled appropriately, the embedded square pad 1 and the longitudinal beam 10 are welded.

Connect the damper pier top connector 6 near the 0# block to the main tower cross beam 11 by bolts;

Connect the connecting rod 7 to the damper pier top connecting piece 6 adjacent to the 0# block by bolts.

Use the crane to erect the 0# small longitudinal beams and bridge deck;

Through the same steps, the 1# longitudinal beam 16 is hoisted to the specified position, and the longitudinal restraint is connected to the 1# block through the vertical bolts 9.

Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims (1)

1. A three-way temporary anchoring device for the steel main beam of a cable-stayed bridge during the construction phase, characterized in that it comprises a transverse wind-resistant temporary anchoring device, a vertical temporary anchoring device and a longitudinal temporary anchoring device; The transverse wind-resistant temporary anchoring device comprises a pre-embedded square pad (1) and a transverse pre-embedded steel bar (2), and the transverse wind-resistant temporary anchoring device is arranged at both ends of the longitudinal beam (10); There are a plurality of transverse pre-embedded steel bars (2) arranged inside the main tower cross beam (11); one end of the pre-embedded square pad (1) is fixedly connected to the middle of the plurality of transverse pre-embedded steel bars (2), and the other end is welded to the longitudinal beam (10); the gap between the longitudinal beam (10) and the pre-embedded square pad (1) is filled with a pad (13); The vertical temporary anchoring device comprises a reserved concrete pad (3) and a fixing rod (4) which are integrally cast and horizontally connected to the main tower; The reserved concrete pad (3) and the main tower cross beam (11) are cast integrally; The longitudinal beam (10) is prefabricated from multiple sections, including a 0# longitudinal beam (15) and a 1# longitudinal beam (16) connected to each other; One end of the fixing rod (4) is embedded in the embedded concrete pad (3), and the other end extends out of the top of the reserved concrete pad (3). The extended end passes through the bottom of the 0# longitudinal beam (15). The extended end is provided with an external thread. The fixing rod (4) is fixed at the end by a nut. The longitudinal temporary anchoring device comprises a damper pier top connecting piece (6) and a connecting rod (7); There are two damper pier top connectors (6), which are respectively connected to the main tower cross beam (11) and the 1# longitudinal beam (16); The connecting rod (7) is arranged along the longitudinal direction of the entire bridge, and the connecting rod (7) is connected to the damper pier top connecting piece (6) at both ends respectively; The middle of the connecting rod (7) is a hollow cylinder, a bolt hole is arranged at the end of the connecting rod (7), and the damper pier top connecting piece (6) is connected to the connecting rod (7) by bolts; The 1# longitudinal beam (16) is connected to the damper pier top connecting piece (6) via vertical bolts (9).