CN215714684U

CN215714684U - Cast-in-situ bent cap support

Info

Publication number: CN215714684U
Application number: CN202122084426.8U
Authority: CN
Inventors: 张德志; 曾磊; 邓志华; 陈良; 李宁; 张翔; 古明昌
Original assignee: China Communications 2nd Navigational Bureau 2nd Engineering Co Ltd; Guangzhou Expressway Co Ltd
Current assignee: China Communications 2nd Navigational Bureau 2nd Engineering Co Ltd; Guangzhou Expressway Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-02-01
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a cast-in-situ bent cap support which comprises a support main body, an unloading block and a jacking device. The unloading block is arranged at the bottom end of the bracket main body and is used for bearing on the bearing platform. The jacking device is used for being installed on the bearing platform, is connected with the bottom of support main part, and the jacking device is used for driving the support main part to go up and down. According to the cast-in-situ bent cap support, the unloading block is arranged at the bottom end of the support main body and is borne on the bearing platform, and the unloading block is transferred to the land from the high altitude, so that the safety risk is reduced. Moreover, the processes of unloading removal and elevation adjustment are simple and convenient, the operation is convenient on land, and the working efficiency is improved.

Description

Cast-in-situ bent cap support

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a cast-in-place bent cap support.

Background

In recent years, with the rapid development of the large-scale construction of the railway expressway network and the bridge construction in China, a large number of bridges crossing rivers and existing lines are built. The capping beam is a beam arranged on the top of the framed bent pile pier and a beam of reinforced concrete or less reinforced concrete arranged on the pier (platform) or the row pile for supporting, distributing and transmitting the load of the upper structure, and is mainly used for supporting the upper structure of the bridge and transmitting all the load to the lower structure.

At present, in the cast-in-place construction of a bent cap, a floor full-hall support is often adopted as a temporary support bearing structure, and the work of formwork installation, reinforcement, prestressed pipeline installation, concrete pouring and the like is carried out on the support. When unloading and elevation adjustment are carried out, an unloading sand box or a profile steel support pad is generally adopted above a support below a template. However, by adopting the method of unloading the sand box, if the load is large, the sand sedimentation is large, so that the sand box cannot play a role, but by adopting the profile steel support pad, cutting is needed during unloading, and the traditional unloading blocks are generally arranged above the profile steel distribution beam under the template, so that the quantity is large, the operation efficiency is low, and the safety risk of high-altitude operation is large.

SUMMERY OF THE UTILITY MODEL

On the basis, the cast-in-place bent cap support is needed to be provided for solving the problems of low operation efficiency and high safety risk of overhead operation of the existing cast-in-place bent cap support construction method.

A cast-in-place bent cap support comprising:

a stent body;

the unloading block is arranged at the bottom end of the bracket main body and is used for bearing on a bearing platform; and

the jacking device is used for being installed on the bearing platform and connected with the bottom end of the support main body, and the jacking device is used for driving the support main body to lift.

In one embodiment, the support main body comprises two groups of upright columns and triangular brackets, the upright columns are arranged in parallel, the two groups of upright columns are arranged at intervals, the unloading block is installed at the bottom ends of the upright columns, the jacking device is connected with the bottom ends of the upright columns, the triangular brackets are installed at the top ends of the upright columns, the two triangular brackets are respectively installed on the two groups of upright columns, and the two triangular brackets are symmetrically arranged about the central line of the support main body.

In one embodiment, the main frame further comprises a main beam, and the main beam is mounted on a platform formed by the upright and the triangular bracket.

In one embodiment, the bracket main body further includes a pad frame and a bottom die, the pad frame is mounted on the main beam, and the bottom die is mounted on the pad frame to bear the cover beam.

In one embodiment, the pad frame comprises an edge pad frame and a middle pad frame, the edge pad frame is installed on the main beam, the two edge pad frames are arranged on the main beam at intervals, and the middle pad frame is installed on the main beam and located between the two edge pad frames.

In one embodiment, each set of the upright columns comprises a first upright column and a second upright column, the first upright column is connected with the second upright column, the unloading block is installed on the first upright column, the jacking device is connected with the first upright column, and the triangular bracket is installed on the second upright column.

In one embodiment, the support further comprises an anchoring structure, and the anchoring structure is used for anchoring the bottom end of the support main body on the bearing platform after the elevation of the support main body is adjusted.

In one embodiment, the anchoring structure comprises a bracket, a distribution beam, an anchor rod and a tensioning mechanism, wherein the bracket is installed on the bracket main body, the distribution beam is installed on the bracket, the tensioning mechanism is installed on the distribution beam, one end of the anchor rod is anchored in the bearing platform, and the other end of the anchor rod is connected with the tensioning mechanism.

When the cast-in-situ bent cap support is used for dismounting unloading and adjusting elevation, the unloading block is arranged at the bottom end of the support main body and is borne on the bearing platform, and the unloading block is transferred to land from high altitude, so that safety risk is reduced. When the elevation is adjusted, the jacking device drives the support main body to lift, then a support is constructed below the unloading block, and then the unloading block falls down and is loaded on the support; when the unloading is removed, the jacking device jacks the support main body to be lifted, then the unloading block is removed, and the jacking device drives the support main body to descend onto the bearing platform; the processes of unloading removal and elevation adjustment are simple and convenient, the operation is convenient on land, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is a schematic view of a cast-in-place bent cap support according to an embodiment;

FIG. 2 is a side view of the cast-in-place capping beam bracket of FIG. 1;

FIG. 3 is a schematic structural diagram of the unloading block, the first upright post and the jacking device in FIG. 1;

FIG. 4 is a schematic view of a construction seat on the bearing platform of FIG. 1;

fig. 5 is a flowchart of a construction method of a cast-in-place bent cap support according to an embodiment.

Reference numerals:

10-bearing platform, 20-cover beam, 100-bracket main body, 110-upright post, 112-first upright post, 114-second upright post, 120-triangular bracket, 130-main beam, 142-side cushion frame, 144-middle cushion frame, 200-unloading block, 300-jacking device, 400-anchor rod structure, 410-bracket, 420-distribution beam, 430-anchor rod, 440-tensioning mechanism and 500-support.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather construed as embodying the utility model in accordance with the principles of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 and 2, a cast-in-place bent cap support according to an embodiment includes a support body 100, an unloading block 200, and a jacking device 300.

The top end of the bracket main body 100 is used for bearing the capping beam 20, the unloading block 200 is installed at the bottom end of the bracket main body 100, and the unloading block 200 is used for bearing on the bearing platform 10. In one embodiment, the bracket body 100 includes two sets of upright columns 110 and triangular brackets 120, the upright columns 110 are provided with two sets, the two sets of upright columns 110 are spaced and arranged in parallel, the unloading block 200 is installed at the bottom end of the upright column 110, the triangular brackets 120 are installed at the top end of the upright column 110, the two triangular brackets 120 are respectively installed on the two sets of upright columns 110, and the two triangular brackets 120 are symmetrically arranged about the center line of the bracket body 100. The bracket main body 100 is formed by assembling modules, so that the bracket main body 100 can be conveniently disassembled and reused.

In one embodiment, each set of upright columns 110 includes a first upright column 112 and a second upright column 114, the first upright column 112 is connected with the second upright column 114, and the upright columns 110 are composed of two sections, which can reduce the processing difficulty of the upright columns 110. The unloader block 200 is mounted to the first upright 112 and the triangular bracket 120 is mounted to the second upright 114. Four unloading blocks 200 are mounted at the bottom end of the first upright post 112, and the four unloading blocks 200 are respectively mounted at four corners of the bottom end of the upright post 110.

In one embodiment, the stand body 100 further includes a main beam 130, and the main beam 130 is mounted on a platform formed by the upright 110 and the triangular bracket 120. In addition to the above embodiments, the support body 100 further includes a bolster (not shown) mounted on the main beam 130 and a bottom mold (not shown) mounted on the bolster for supporting the cover beam 20.

Specifically, the cushion frame includes side cushion frame 142 and well cushion frame 144, and side cushion frame 142 installs on main beam 130, and the quantity of side cushion frame 142 is two, and two side cushion frames 142 set up at the interval on main beam 130, and well cushion frame 144 installs on main beam 130, and well cushion frame 144 is located between two side cushion frames 142, is located the stand 110 directly over, and the die block is installed on side cushion frame 142 and well cushion frame 144.

Referring to fig. 3 and 4, the jacking device 300 is installed on the supporting platform 10, the jacking device 300 is connected to the bottom end of the supporting body 100, and the jacking device 300 is used for driving the supporting body 100 to ascend and descend. In one embodiment, jacking device 300 is coupled to the bottom end of mast 110. Specifically, jacking device 300 is connected to the bottom end of first upright 112. Two jacking devices 300 are all connected to the bottom of every first stand 112, and four jacking devices 300 are the synchronous jacking support main part 100.

In one embodiment, in order to ensure that the four jacking devices 300 are synchronously jacked, displacement meters are installed on the four jacking devices 300, and are used for measuring jacking heights of the jacking devices 300. The jacking device 300 may be a jack. It is understood that in other embodiments, the jacking device 300 may have other structures as long as the bracket body 100 can be lifted, for example, the jacking device 300 may be a hydraulic cylinder or the like.

In one embodiment, the cast-in-place bent cap bracket further includes an anchoring structure 400, and the anchoring structure 400 is used for anchoring the bottom end of the bracket main body 100 to the bearing platform 10 after the bracket main body 100 is adjusted to the height. Specifically, the anchoring structure 400 includes a corbel 410, a distribution beam 420, an anchor rod 430, and a tensioning mechanism 440.

The bracket 410 is mounted on the stand main body 100. In one embodiment, the bracket 410 is mounted to the upright 110. Specifically, a bracket 410 is mounted on the first upright 112. The distribution beam 420 is installed on the bracket 410, and the distribution beam 420 is perpendicular to the bracket 410. The tension mechanism 440 is installed on the distribution beam 420, one end of the anchor bar 430 is anchored in the bearing platform 10, and the other end of the anchor bar 430 is connected with the tension mechanism 440. The tensioning mechanism 440 can tension the pre-tensioning anchor rod 430 to anchor the upright post 110 to the bearing platform 10.

Specifically, the tensioning mechanism 440 may be a jack, the anchor rod 430 may be finish-rolled deformed steel bar, and one end of the anchor rod 430 is embedded in the bearing platform 10 and is fixed by an anchor plate. Each group of upright posts 110 is connected with two anchoring structures 400, and the two anchoring structures 400 are respectively arranged on two opposite sides of the upright post 110 to ensure the stress balance of the bracket main body 100.

Referring to fig. 5, the present invention further provides a construction method of a cast-in-place bent cap support, which is implemented by using the cast-in-place bent cap support. Specifically, the construction method comprises the following steps:

step S110: the unloading block 200 is installed on the platform 10.

Referring to fig. 1 and 3, specifically, a center point of the vertical columns 110 is set out on the bearing platform 10, and then the unloading blocks 200 are installed on the bearing platform 10, such that the four unloading blocks 200 of each group of vertical columns 110 are uniformly arranged around the center point.

Step S120: the bracket main body 100 is mounted on the unloading block 200.

Specifically, first, the first upright column 112 is installed on the unloading block 200, after the parallel bracing is welded, the second upright column 114 is hoisted, and is connected with the first upright column 112 by using a flange, and finally, the parallel bracing is welded. After the vertical column 110 is mounted, the triangular bracket 120 is mounted on the vertical column 110. Specifically, the triangular bracket 120 is hoisted, and the triangular bracket 120 is connected with the second upright column 114 by a flange.

Then, the main beam 130 is hoisted, and the main beam 130 is installed on the platform formed by the upright 110 and the triangular bracket 120. The side bolster 142 and the middle bolster 144 are prefabricated in advance in a factory, the side bolster 142 and the middle bolster 144 are hoisted after being transported to the site, the side bolster 142 and the middle bolster 144 are installed on the main beam 130, and finally the bottom die is installed on the side bolster 142 and the middle bolster 144.

Step S130: the jacking device 300 is installed on the platform 10, and the jacking device 300 is connected with the bottom end of the stand main body 100.

Specifically, the jacking device 300 is a jack, and the jack is mounted on the bearing platform 10 and connected to the bottom end of the support main body 100. In one embodiment, a jack is coupled to the column 110. Specifically, a jack is connected to the parallel connection of the first upright 112, and the jack is located between the two unloading blocks 200.

Step S140: the jacking device 300 lifts the support body 100 and forms the support 500 on the bearing platform 10.

Referring to fig. 4, specifically, after the installation of the support body 100 is completed, the elevation of the bottom mold is retested, and the support body 100 is lifted according to the difference value from the designed elevation. And then constructing below the unloading block 200 on the bearing platform 10 to form the support 500, wherein when the gap between the unloading block 200 and the bearing platform 10 is small, a cushion steel plate can be plugged to form the support 500, if the gap is large, high-strength slurry can be poured, and the support 500 is formed after the grouting slurry is solidified. Wherein, the height of the support 500 is equal to the difference between the retest height of the support body 100 and the designed elevation.

Step S150: the jacking device 300 drives the support main body 100 to descend, the unloading block 200 falls on the support 500, and finally the bottom end of the support main body 100 and the bearing platform 10 are anchored.

Specifically, the unloading jack lowers the unloading block 200 onto the support 500, and finally the bottom end of the support body 100 is anchored on the bearing platform 10 by using the anchoring structure 400. In one embodiment, the process of anchoring the bottom end of the stent main body 100 to the bearing platform 10 is specifically as follows: one end of the anchor rod 430 is embedded in the bearing platform 10 in advance, the bracket 410 is installed on the parallel connection of the first upright post 112 in advance, the distribution beam 420 is installed on the bracket 410, the tensioning mechanism 440 is installed on the distribution beam 420, the tensioning mechanism 440 is a jack, the tensioning mechanism 440 is connected with the other end of the anchor rod 430, and the anchor rod 430 is tensioned and pre-tightened, so that the bottom end of the support main body 100 is anchored on the bearing platform 10.

In one embodiment, when the cast-in-situ capping beam support is removed after the concrete is tensioned, the four jacking devices 300 are synchronously jacked, the jacking force is not less than the total weight of the whole support system and other construction loads, the unloading block 200 is removed, the jack is returned, the support main body 100 falls onto the bearing platform 10, and finally the support main body 100 is removed from top to bottom from the formwork.

According to the cast-in-place bent cap support and the construction method thereof, the unloading block 200 is arranged at the bottom end of the support main body 100, and the unloading block 200 is transferred to the land from high altitude, so that the safety risk is reduced. Moreover, the processes of unloading removal and elevation adjustment are simple and convenient, the operation is convenient on land, and the working efficiency is improved.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides a cast-in-place bent cap support which characterized in that includes:

a stent body;

2. The cast-in-place bent cap support according to claim 1, wherein the support main body comprises two groups of upright posts and triangular brackets, the two groups of upright posts are arranged in parallel at intervals, the unloading block is arranged at the bottom ends of the upright posts, the jacking device is connected with the bottom ends of the upright posts, the triangular brackets are arranged at the top ends of the upright posts, the two triangular brackets are respectively arranged on the two groups of upright posts, and the two triangular brackets are symmetrically arranged about the central line of the support main body.

3. The cast-in-place capping beam support of claim 2, wherein the support body further comprises a main beam mounted on a platform formed by the uprights and the triangular brackets.

4. The cast-in-place bent cap support according to claim 3, wherein the support main body further comprises a bolster frame and a bottom die, the bolster frame is mounted on the main beam, and the bottom die is mounted on the bolster frame to bear the bent cap.

5. The cast-in-place bent cap support of claim 4, wherein the pad frame comprises an edge pad frame and a middle pad frame, the edge pad frame is mounted on the main cross beam, the two edge pad frames are arranged on the main cross beam at intervals, and the middle pad frame is mounted on the main cross beam and located between the two edge pad frames.

6. The cast-in-place bent cap support of claim 2, wherein each group of the upright posts comprises a first upright post and a second upright post, the first upright post and the second upright post are connected, the unloading block is mounted on the first upright post, the jacking device is connected with the first upright post, and the triangular bracket is mounted on the second upright post.

7. The cast-in-place capping beam support of claim 1, further comprising an anchoring structure for anchoring the bottom end of the support body to the bearing platform after the elevation of the support body is adjusted.

8. The cast-in-place capping beam bracket of claim 7, wherein the anchoring structure comprises a bracket, a distribution beam, an anchor rod and a tensioning mechanism, the bracket is mounted on the bracket main body, the distribution beam is mounted on the bracket, the tensioning mechanism is mounted on the distribution beam, one end of the anchor rod is anchored in the bearing platform, and the other end of the anchor rod is connected with the tensioning mechanism.