Presetting device for expansion joint of protective wall
By using preset devices that support steel plates, pins and electric jacks in the construction of railway box girder protective walls, the construction quality problems caused by the simplified expansion joint preset materials in the prior art are solved, and efficient and accurate expansion joint formation is achieved. Improves construction quality and appearance aesthetics and reduces costs.
Patent Information
- Application Number
- CN202421020200.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-11
AI Technical Summary
In the construction of railway box girder protective walls, the preset materials for expansion joints in the existing technology are mostly simple materials, which leads to the infusion of concrete slurry that affects the effect of joints, and poor construction leads to poor quality of expansion joints, affecting the construction quality and appearance of construction Beauty.
Adopt a protective wall expansion joint preset device including the first and second support steel plates, latches and electric jacks. The formwork is connected through the latch and the support steel plate is removed by the electric jack to form a expansion joint, and a slot is provided on the steel plate to fix the shear force. to ensure the stability and dimensional accuracy of the joints after concrete pouring.
The rapid formation of expansion joints between protective wall panel sections is achieved, the construction quality and appearance aesthetics are improved, the integrity of concrete edges and corners is ensured, the material cost and construction cost are reduced, and the construction efficiency is improved.
Smart Images
Figure CN222251747U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of railway box girder protection wall construction, in particular to a protection wall expansion joint preset device. Background Art
[0002] With the rapid development of economy, the pace of railway construction is accelerating. In view of the current land situation, in order to save land resources to the greatest extent, the railway design concept takes "bridge leading the road" as the guiding principle. In the structure of the bridge, longitudinal cable trenches are set on both sides of the upper panel to separate strong and weak electricity, and the wall adjacent to the line is called the protective wall.
[0003] As a reinforced concrete wall with a continuous beam body in the longitudinal direction, the protective wall is affected by temperature changes and linear shape. A vertical through joint (expansion joint) is set at a length of about 2m in the longitudinal direction to ensure its longitudinal free expansion and contraction. The setting of the expansion joint is often poorly constructed, or foam plastics, bamboo plywood or other simple materials are used as the reserved materials for the joint, resulting in the injection of concrete slurry and affecting the joint effect. Utility Model Content
[0004] The utility model aims to solve at least one technical problem in the background technology and provide a device for presetting expansion joints of protective walls.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a protective wall expansion joint preset device, comprising:
[0006] A first supporting steel plate, wherein the first protective wall template is arranged on the back of the first supporting steel plate;
[0007] A second supporting steel plate is arranged opposite to the first supporting steel plate, and a second protective wall template is arranged on the back of the second supporting steel plate;
[0008] A latch, detachably connecting the first protective wall formwork, the first supporting steel plate, the second supporting steel plate and the second protective wall formwork, fixing the relative positions of the first protective wall formwork, the first supporting steel plate, the second supporting steel plate and the second protective wall formwork;
[0009] Two electric jacks, which are arranged between the first supporting steel plate and the second supporting steel plate, and are used to push the first supporting steel plate and the second supporting steel plate in opposite directions respectively;
[0010] When the first protective wall formwork and the second protective wall formwork are poured with concrete to form a protective wall, the latch is removed, and then the first supporting steel plate and the second supporting steel plate are removed by pushing with the electric jack to form a protective wall expansion joint.
[0011] According to one aspect of the utility model, both the first supporting steel plate and the second supporting steel plate are provided with slots for clamping and fixing shear bars for the protective wall.
[0012] According to one aspect of the utility model, the width of the first supporting steel plate and the second supporting steel plate is the width of the expansion joint of the protective wall.
[0013] According to one solution of the utility model, a presetting device for expansion joints of protective walls includes: a first supporting steel plate, a first protective wall template is arranged on the back of the first supporting steel plate; a second supporting steel plate is arranged opposite to the first supporting steel plate, and the second protective wall template is arranged on the back of the second supporting steel plate; a latch, which detachably connects the first protective wall template, the first supporting steel plate, the second supporting steel plate, and the second protective wall template, and fixes the relative positions of the first protective wall template, the first supporting steel plate, the second supporting steel plate, and the second protective wall template; two electric jacks, which are arranged between the first supporting steel plate and the second supporting steel plate, and are respectively used to push the first supporting steel plate and the second supporting steel plate in the opposite direction; when the first protective wall template and the second protective wall template are poured with concrete to form a protective wall, the latch is removed, and then the first supporting steel plate and the second supporting steel plate are removed by the electric jack to form an expansion joint of the protective wall. With such a setting, the expansion joint of the protective wall can be reserved by the presetting device for expansion joints of the protective wall of the utility model, and the expansion joint between the protective wall plate sections can be quickly formed, which effectively ensures the concrete edges and corners at the expansion joint, and improves the construction quality, appearance and construction efficiency.
[0014] According to one solution of the utility model, the first support steel plate and the second support steel plate are both provided with slots for clamping and fixing the shear reinforcement for the protective wall. In this way, the shear reinforcement for the protective wall can be fixed by the slots on the first support steel plate and the second support steel plate, so that the structural strength of the subsequently cast concrete protective wall is more stable and reliable, and the strength of the subsequently formed protective wall is ensured.
[0015] According to one solution of the utility model, the width of the first supporting steel plate and the second supporting steel plate is the width of the expansion joint of the protective wall. Such a configuration can make installation and disassembly more convenient and quick, and the dimensional accuracy of the expansion joint of the protective wall formed is higher.
[0016] According to the solution of the utility model, the utility model can effectively ensure the uniformity of the width of the expansion joint of the protective wall, avoid leakage of slurry, reduce damage to edges and corners, and ensure construction quality by arranging the first supporting steel plate and the second supporting steel plate.
[0017] According to the solution of the utility model, the utility model optimizes the conventional template bolt connection into a pin connection, and adopts an electric jack for removing the plug-in template, which effectively improves the construction efficiency of installing and removing the template and the preset expansion joint steel plate, and reduces the construction cost.
[0018] According to the solution of the utility model, the first supporting steel plate and the second supporting steel plate can be reused, which reduces the investment in using disposable preset plate seam materials and effectively reduces material costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A cross-sectional view schematically shows the construction status of a protective wall expansion joint preset device according to an embodiment of the utility model. DETAILED DESCRIPTION
[0020] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.
[0021] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”
[0022] Figure 1 A schematic cross-sectional view of a protective wall expansion joint presetting device in construction state according to an embodiment of the utility model is shown. Figure 1 As shown, in this embodiment, the protective wall expansion joint preset device includes:
[0023] A first supporting steel plate 1, a first protective wall template 5 is arranged on the back of the first supporting steel plate 1;
[0024] The second supporting steel plate 2 is inserted and arranged opposite to the first supporting steel plate 1, and the second protective wall template 6 is arranged on the back of the second supporting steel plate 2;
[0025] The latch 3 is used to detachably connect the first protective wall formwork 5, the first supporting steel plate 1, the second supporting steel plate 2 and the second protective wall formwork 6, so as to fix the relative positions of the first protective wall formwork 5, the first supporting steel plate 1, the second supporting steel plate 2 and the second protective wall formwork 6;
[0026] Two electric jacks 4, which are arranged between the first supporting steel plate 1 and the second supporting steel plate 2, and are used for pushing the first supporting steel plate and the second supporting steel plate in opposite directions respectively;
[0027] When the first protective wall formwork 5 and the second protective wall formwork 6 are poured with concrete to form the protective wall, the latch 3 is removed, and then the first supporting steel plate 1 and the second supporting steel plate 2 are removed by the electric jack 4 to form the protective wall expansion joint. In this way, the protective wall expansion joint can be reserved by the protective wall expansion joint preset device of the utility model, and the expansion joint between the protective wall plate sections can be quickly formed, which effectively ensures the concrete edges and corners at the expansion joint, and improves the construction quality, appearance and construction efficiency.
[0028] It should be noted that the first supporting steel plate 1 and the second supporting steel plate 2 are both T-shaped plates, and the T-shaped plate is composed of a horizontal plate 8 and a vertical plate (not shown in the figure). Figure 1 As shown, in this embodiment, the first support steel plate 1 and the second support steel plate 2 are arranged along Figure 1 The front and rear directions are arranged in Figure 1 The horizontal plate 8 of the first supporting steel plate 1 is shown, while the horizontal plate of the second supporting steel plate 2 is along Figure 1 The horizontal plate is set away from the first supporting steel plate 1 in the front-back direction, and the lines of the two horizontal plates are Figure 1 The vertical plates of the first supporting steel plate 1 and the vertical plates of the second supporting steel plate 2 are stacked on each other.
[0029] Furthermore, two electric jacks 4 are arranged between the first supporting steel plate 1 and the second supporting steel plate 2, wherein the mounting end of one electric jack 4 is supported on the inner wall of the horizontal plate of the first supporting steel plate 1, and the pushing end is supported on the inner wall of the horizontal plate of the second supporting steel plate 2; the mounting end of the other electric jack 4 is supported on the inner wall of the horizontal plate of the second supporting steel plate 2, and the pushing end is supported on the inner wall of the horizontal plate of the first supporting steel plate 1. In this way, when it is necessary to remove the first supporting steel plate 1 and the second supporting steel plate 2 to form an expansion joint, the first supporting steel plate 1 and the second supporting steel plate 2 can be pushed in opposite directions by the two electric jacks 4.
[0030] Furthermore, the backs of the horizontal plates of the first supporting steel plate 1 and the second supporting steel plate 2 are both provided with mounting plates 9, the ends of the first protective wall formwork 5 and the second protective wall formwork 6 are provided with angle steels (not shown in the figure) extending toward the mounting plate 9 and abutting against the mounting plate 9, and the mounting plate 9 and the angle steel are provided with plug holes, and the plug pins 3 connect the first supporting steel plate 1, the second supporting steel plate 2, the first protective wall formwork 5 and the second protective wall formwork 6 through the plug holes. Furthermore, in this embodiment, the first supporting steel plate 1 and the second supporting steel plate 2 are both provided with card slots (not shown in the figure) for clamping and fixing the shear bars 7 required for the protective wall. With such a configuration, the shear bars required for the protective wall can be fixed by the card slots on the first supporting steel plate 1 and the second supporting steel plate 2, so that the structural strength of the subsequently cast concrete protective wall is more stable and reliable, and the strength of the subsequently formed protective wall is ensured.
[0031] Specifically, in this embodiment, the slots are respectively arranged through the ends of the vertical plates of the first supporting steel plate 1 and the second supporting steel plate 2, and are arranged corresponding to each other. When the two vertical plates are stacked together, the slots on the two vertical plates form a through hole due to the contraction of their positions. At this time, the shear reinforcement can be inserted into the through hole to achieve the installation and fixation of the shear reinforcement.
[0032] Furthermore, when the first supporting steel plate 1 and the second supporting steel plate 2 are removed, the two slots are moved away from each other by pushing the first supporting steel plate 1 and the second supporting steel plate 2 in opposite directions respectively through the electric jack 4. At this time, the shear reinforcement is fixed in the concrete protective wall.
[0033] Furthermore, in this embodiment, the width of the first support steel plate 1 and the second support steel plate 2 (i.e., the width of the horizontal plate 8) is the width of the expansion joint of the protective wall. This arrangement can make installation and disassembly more convenient and quick, and the dimensional accuracy of the expansion joint of the protective wall formed is higher.
[0034] Based on the above solution of the utility model, it is necessary to further explain that:
[0035] The first supporting steel plate and the second supporting steel plate are steel plates arranged vertically corresponding to the expansion joints of the protective wall. The thickness of each steel plate is half the width of the expansion joint. After the two steel plates are butted against each other, the two vertically arranged shear bars are inserted into the card grooves of the steel plates to prevent the through-flow of cement slurry. At the same time, it is ensured that the overlapping thickness of the two steel plates is the width of the expansion joint. The shapes of the first supporting steel plate and the second supporting steel plate are both T-shaped. The two T-shaped steel plates are convenient for the subsequent demolition work to be successfully completed by cooperating with the electric jack.
[0036] The bolts are used to replace the commonly used template connection bolts with bolts, and the two adjacent protective wall templates and the two steel plates in the seam are connected horizontally through the preset relative connection holes to ensure that the templates and the steel plates are firm and stable;
[0037] The electric jack is set at the end of the protective wall formwork and arranged alternately at the upper and lower positions of the two adjacent formworks along the expansion joint of the protective wall. After the concrete pouring is completed, after the formwork pins are horizontally removed, the inserted steel plates can be smoothly removed by horizontally lifting with the jack.
[0038] According to the above scheme of the utility model, the utility model can effectively ensure the uniformity of the width of the expansion joint of the protective wall, avoid leakage of slurry, reduce damage to edges and corners, and ensure construction quality by arranging the first supporting steel plate and the second supporting steel plate.
[0039] According to the above scheme of the utility model, the utility model optimizes the conventional template bolt connection into a pin connection, and adopts an electric jack for removing the plug-in template, which effectively improves the construction efficiency of installing and removing the template and the preset expansion joint steel plate, and reduces the construction cost.
[0040] According to the above solution of the utility model, the first supporting steel plate and the second supporting steel plate can be reused, which reduces the investment in using disposable preset plate seam materials and effectively reduces material costs.
[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.
Claims
1. A pre-set device for expansion joints of protective walls, characterized in that: include: A first supporting steel plate (1), wherein the first protective wall template is arranged on the back of the first supporting steel plate (1); A second supporting steel plate (2) is arranged opposite to the first supporting steel plate (1), and a second protective wall template is arranged on the back of the second supporting steel plate (2); A latch (3) is used to detachably connect the first protective wall formwork, the first supporting steel plate (1), the second supporting steel plate (2) and the second protective wall formwork, so as to fix the relative positions of the first protective wall formwork, the first supporting steel plate (1), the second supporting steel plate (2) and the second protective wall formwork; Two electric jacks (4), the two electric jacks (4) are arranged between the first supporting steel plate (1) and the second supporting steel plate (2), and are used to push the first supporting steel plate (1) and the second supporting steel plate (2) in opposite directions respectively; When the first protective wall formwork and the second protective wall formwork are poured with concrete to form a protective wall, the latch (3) is removed, and then the first supporting steel plate (1) and the second supporting steel plate (2) are removed by pushing with the electric jack (4) to form a protective wall expansion joint.
2. The device for presetting expansion joints of protective walls according to claim 1, characterized in that: The first supporting steel plate (1) and the second supporting steel plate (2) are both provided with slots for respectively clamping and fixing shear reinforcement bars for the protective wall.
3. The device for presetting expansion joints of protective walls according to claim 1 or 2, characterized in that: The width of the first supporting steel plate (1) and the second supporting steel plate (2) is the width of the expansion joint of the protective wall.