CN215164738U

CN215164738U - Tied-rod arch type fast-splicing support

Info

Publication number: CN215164738U
Application number: CN202120790684.5U
Authority: CN
Inventors: 强耀锋; 李启发; 王红凯; 黄勇; 白倩茹; 王晨光; 田佳
Original assignee: China Communications Road And Bridge Construction Co ltd Overseas Branch; Road and Bridge International Co Ltd
Current assignee: China Communications Road And Bridge Construction Co ltd Overseas Branch; Road and Bridge International Co Ltd
Priority date: 2021-04-17
Filing date: 2021-04-17
Publication date: 2021-12-14
Anticipated expiration: 2031-04-17

Abstract

The utility model provides a tie rod arch type fast splicing support, which comprises two tie rods arranged between two bridge piers, wherein each tie rod arch comprises an arch rib, tie rods are connected between arch feet at two ends of the arch rib, the arch feet at two ends of the arch rib are respectively supported on corbels preset on the pier body, and a flat connecting rod is connected between the two arch ribs; a plurality of vertical rods are welded on each arch rib, the upper ends of the vertical rods are as high as the arch crown of each arch rib, and a bearing beam is arranged along the top of each vertical rod and the arch crown on each arch rib. The utility model discloses a tie rod encircles as the main atress structure of support, make full use of the pier structure of having been under construction, avoided the ground treatment to unfavorable geology, have under the equal load that the structure is light, economize with the material, with low costs, ann tear advantages such as convenient open.

Description

Tied-rod arch type fast-splicing support

Technical Field

The utility model belongs to the technical field of the bridge construction, a support that sets up when relating to bridge superstructure installation, concretely relates to support is assembled fast to tie rod arch form.

Background

The sliding installation or the cast-in-place construction of the bridge box girder requires the erection of a support. The common bridge construction sliding support or cast-in-place beam support at present mainly comprises a floor large-diameter steel pipe support, a full-hall scaffold and a truss type movable formwork.

The total steel consumption of the floor large-diameter steel pipe support is large, the floor large-diameter steel pipe support takes time and labor for building and dismantling, and when the bridge foundation is poor, the foundation needs to be treated, so that the economy is poor.

The full hall scaffold is complicated to install, and has high requirements on installation quality. When the bridge foundation is poor, the foundation treatment is also needed. And the collapse of the support and other major accidents are more common in all scaffolds.

The truss type movable formwork can be attached to a pier body in a pin rod or triangular bracket mode, the workload of foundation treatment is reduced, the structural weight of the movable formwork rapidly rises along with the increase of the span of a bridge, when a certain span is reached, the movable formwork is too heavy, the steel consumption is large, and the economical efficiency is obviously reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the sliding support or the cast-in-place beam support in the existing bridge construction, developing a tied arch type bearing support with lighter and more handy structure, better economical efficiency and more convenient construction.

The utility model provides a pair of support is pieced together soon to tie rod arch form, its characterized in that: the bridge pier comprises two tied arches arranged between two bridge piers, wherein each tied arch comprises an arch rib, tied rods are connected between arch feet at two ends of each arch rib, the arch feet at two ends of each arch rib are respectively supported on lower corbels preset on a pier body, and a flat link rod is connected between the two arch ribs; a plurality of vertical rods are welded on each arch rib, the height of the upper end of each vertical rod is the same as that of the arch crown of each arch rib, and a bearing beam is arranged along the top of each vertical rod and the arch crown on each arch rib.

The utility model discloses a tie rod arch is as the main atress structure of support. The tied arch is a structural form integrating the advantages of an arch and a rod, the arch and the rod are combined together to bear load together, the structural performance and the combination effect of the arch under pressure and the tension of the tied rod are fully exerted, the horizontal thrust of an arch end is borne by the tied rod, so that the arch end support does not generate horizontal thrust, and the tied arch has the outstanding advantages of light and handy structure, reasonable stress, economic material, convenience in mounting and dismounting and the like under the same load, can fully utilize a constructed pier structure, avoids foundation treatment on unfavorable geology, greatly reduces the investment of temporary steel structural materials for bridge construction, and has remarkable economic advantages.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a tied arch quick-splice stent;

FIG. 2 is a schematic structural view of another embodiment of a tied arch quick-splice stent;

FIG. 3 is a schematic view of the tie rod arches of the embodiment of FIG. 1 in a mounted state;

figure 4 is a schematic view of the embodiment of figure 1 showing the installed condition of the uprights and the load-bearing beams;

FIG. 5 is a schematic view showing the installation of the tie steel arch and the vertical rod of the embodiment shown in FIG. 2;

fig. 6 is a schematic view showing a state in which the flat link is mounted in the embodiment shown in fig. 2.

Detailed Description

As shown in fig. 1 and 2, the utility model provides a tie rod arch type fast splicing support, which comprises two tie rods arches arranged between two piers 1, wherein each tie rod arch comprises an arch rib 2, a tie rod 3 is connected between arch feet at two ends of the arch rib, the arch feet at two ends of the arch rib are respectively supported on a lower bracket 4 preset on a pier body, and a flat connecting rod 5 is connected between the two arch ribs; a plurality of upright posts 6 are welded on each arch rib, the upper ends of the upright posts are as high as the arch crown of each arch rib, and a bearing beam 7 is arranged along the top of each upright post and the arch crown on each arch rib.

In the embodiment shown in fig. 1, the two steel arches are supported on opposite side walls of two bridge piers along the bridge direction, upper brackets 8 are also preset on the opposite side walls of the bridge piers, and two ends of the bearing beam 7 are respectively supported on the two upper brackets 8.

In the embodiment shown in fig. 2, two tie-bar arches are respectively arranged on the lateral walls of the pier body in the transverse bridge direction, and a distribution beam 9 is erected on the bearing beam.

Height adjustment when being convenient for the support mounting, and construction completion after-poppet dismantlement, install respectively on bracket and the last bracket down and unload the device, it can adopt and unload a sand section of thick bamboo or unload the steel wedge to unload the device.

In order to avoid the displacement of the bearing beam, a bearing beam positioning clamping groove can be arranged at the arch top of each arch rib. The two sides of the bearing beam are limited in the positioning clamping grooves.

The method for erecting the tied arch type quick assembling support comprises the following steps:

(1) when the concrete pouring construction of the pier 1 is carried out, according to the preset support supporting position, corbel connecting pieces are respectively embedded in two opposite sides of two pier bodies along the bridge direction or two sides of each pier body along the bridge direction; before the support is erected, a lower bracket 4 or an upper bracket 8 is installed on a bracket embedded part, and each bracket is provided with a discharging device which adopts a discharging sand cylinder or a discharging steel wedge;

(2) a tie bar arch support is erected between the two piers:

(21) as shown in fig. 3, in the case that the corbels are positioned at two opposite sides of the two pier bodies along the bridge direction, two tied arches are installed between the two opposite sides of the two pier bodies, arch feet at two ends of each tied arch rib 2 are respectively supported on the lower corbels 4 on the two piers, and a flat link rod 5 is arranged between the arch ribs of the two tied arches;

as shown in fig. 4, a plurality of uprights 6 for supporting on the rib are prefabricated, each having a length determined according to the level of its intended support on the rib up to the height of the dome; the upper end of each upright rod 6 is welded with the bottom surface of a bearing beam 7 in advance, connecting rods 10 are welded between the upright rods connected with the bottom of each bearing beam and between the upright rods connected with the bottoms of the two bearing beams to form a truss structure, the truss is integrally hoisted above the two arch ribs, each bearing beam 7 is supported on the arch crown of each arch rib and the upper bracket 8 on the pier, the lower end of each upright rod is welded with the arch ribs, and the support is erected. The erected tie rod arch support is shown in fig. 1.

(22) As shown in fig. 5 and 6, under the condition that the corbels are positioned at two sides of the transverse bridge of each pier, two sides of two pier bodies are respectively provided with a tied arch, a plurality of upright posts 6 are welded on the arch rib 2 of each tied arch in advance, the upper end of each upright post is as high as the arch crown of the tied arch rib, the tied arch and the upright posts are integrally hoisted, arch feet at two ends of each tied arch rib 2 are respectively supported on the lower corbels 4 on the two piers, and a flat connecting rod 5 is arranged between the arch ribs of the two tied arches;

and a bearing beam 7 is erected along the top of the vertical rod and the vault on each arch rib, a plurality of distribution beams 9 are erected on the two bearing beams in the transverse direction, and the erection of the support is completed. The erected tie rod arch support is shown in fig. 2.

Claims

1. The utility model provides a tie rod arch form is pieced together support soon which characterized in that: the bridge pier comprises two tied arches arranged between two bridge piers, wherein each tied arch comprises an arch rib, tied rods are connected between arch feet at two ends of each arch rib, the arch feet at two ends of each arch rib are respectively supported on lower corbels preset on a pier body, and a flat link rod is connected between the two arch ribs; a plurality of vertical rods are welded on each arch rib, the height of the upper end of each vertical rod is the same as that of the arch crown of each arch rib, and a bearing beam is arranged along the top of each vertical rod and the arch crown on each arch rib.

2. The tied arch quick-splice bracket of claim 1, wherein: the two tie bar arches are supported on two side walls of the two bridge piers along the bridge direction, the opposite side walls of the two bridge piers are also provided with upper brackets, and two ends of the bearing beam are respectively supported on the upper brackets on the two bridge piers.

3. The tied arch quick-splice bracket of claim 1, wherein: the lower corbels are preset on two lateral walls of the transverse bridge direction of each bridge pier, and the bearing beams are erected with the distribution beams.