Steel bar positioning formwork of prefabricated small stand column of rail transit vehicle depot

Abstract

The utility model discloses a steel bar positioning formwork of a prefabricated small stand column of a rail transit vehicle depot. The steel bar positioning formwork comprises an angle steel support, a positioning steel plate and an auxiliary positioning sleeve. The angle steel supports are fixedly arranged above the ground at intervals, extend in the X direction and are symmetrically arranged on the two sides of the overhaul trench terrace in the Y direction, and a plurality of positioning steel plates are fixedly arranged on the angle steel supports at intervals. The positioning steel plate is located above the orthographic projection of the small stand column pouring position, and a plurality of auxiliary positioning sleeves allowing steel bars to penetrate through are fixedly arranged on the positioning steel plate in the Z direction. When the steel bar positioning formwork is used for positioning, only the position of the axis and the position of the first small stand column need to be checked, and after the auxiliary device is adjusted in place, temporary fixing is conducted in a welding mode. Construction personnel only need to insert the reserved ribs into the reserved holes in each positioning steel plate to complete the installation work of the reserved ribs, and the structure is simple and easy to achieve.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of track construction, and concretely relates to a reinforcing steel bar positioning formwork for prefabricated small columns of a rail transit vehicle depot. BACKGROUND

[0002] The column type inspection pit of the rail transit vehicle depot is an important component in rail transit and is mainly used for subway vehicle maintenance and parking, and the small columns can be cast in situ or prefabricated. The prefabricated small columns have great advantages in construction efficiency, engineering quality, construction cost and safety compared with the cast-in-situ small columns, and are widely used.

[0003] The installation of the positioning reinforcing steel bars of the prefabricated small columns is a big difficulty in the construction of the prefabricated small columns. The prefabricated small columns need to be installed in a row, and the number of the single row is nearly one hundred. The horizontal and vertical positions are required to be high, the top track fixing fastener has no adjustment space, and the axis deviation of the installed row of small columns is required to be ±2 mm and the horizontal error is required to be ±1 mm. The small columns are processed in a factory, the bottom is reserved with a grouting sleeve, the reinforcing steel bars are reserved at the construction site, the reinforcing steel bars are connected through grouting anchors, and the accuracy of the embedded position of the reserved reinforcing steel bars relates to the installation quality of the small columns.

[0004] In the conventional construction, before the concrete pouring of the inspection pit floor, the specific position of each small column is determined through measurement and setting out, and then a reserved reinforcing steel bar positioning device is processed. The device is processed from an ordinary formwork, and the holes are opened on the formwork according to the relative position of the reserved reinforcing steel bars of the small columns. After the position and axis of the small column are determined, the formwork is sleeved, then the reserved reinforcing steel bars are inserted into the corresponding reserved holes, and the reserved reinforcing steel bars are connected with the floor reinforcing steel bars through spot welding, and the embedding of the reserved reinforcing steel bars is completed. The following problems often exist in this way

[0005] (1) During the installation, the positioning is only performed through the middle positioning reinforcing steel bars, and the positioning device is likely to be twisted when placed, which leads to a large embedding error.

[0006] (2) The reserved reinforcing steel bars are embedded one by one for the single small column, the longitudinal and horizontal spacing of the adjacent columns cannot be uniformly adjusted, there is a certain error, and the final forming effect is poor.

[0007] Finally, most of the reserved reinforcing steel bars are not accurately positioned, which affects the installation of the small columns. UTILITY MODEL CONTENTS

[0008] The utility model aims at solving one of the technical problems in the prior art. To this end, one object of the utility model is to provide a reinforcing steel bar positioning formwork for prefabricated small columns of a rail transit vehicle depot. When the reinforcing steel bar positioning formwork is positioned, only the axis and the position of the first small column need to be checked, and then the auxiliary device is adjusted in place and temporarily fixed through welding. The construction personnel only need to insert the reserved reinforcing steel bars into the reserved holes on each positioning steel plate to complete the installation of the reserved reinforcing steel bars, and the structure is simple and easy to realize.

[0009] In order to solve the above problems, the utility model provides a kind of reinforcing steel bar positioning mould frame of prefabricated small column of rail transit depot, define the horizontal extension direction of maintenance ditch floor as X direction, the left and right sides direction of maintenance ditch floor as Y direction, gravity direction as Z direction:

[0010] Reinforcing steel bar positioning mould frame includes angle steel support, positioning steel plate and auxiliary positioning sleeve;Angle steel support is fixedly arranged on ground, and the angle steel support is symmetrically arranged on the two sides of maintenance ditch floor along X direction, and a plurality of positioning steel plates are fixedly arranged on the angle steel support;Positioning steel plate is located above the orthographic projection of small column pouring position, and a plurality of auxiliary positioning sleeves for accommodating reinforcing steel bar are fixedly arranged on the positioning steel plate along Z direction.

[0011] Preferably, the angle steel support includes X direction support angle steel, Y direction support angle steel and connecting angle steel, wherein the X direction support angle steel is fixedly supported on the two sides of maintenance ditch floor along X direction, a plurality of Y direction support angle steels are fixedly connected between the X direction support angle steels on each side, and a plurality of connecting angle steels are fixedly connected between the X direction support angle steels on two sides.

[0012] Preferably, the X direction support angle steel and the connecting angle steel are fixedly connected by transverse connecting bolt.

[0013] Preferably, the two ends of the connecting angle steel are fixedly connected to the X direction support angle steels on the two sides of the positioning steel plate.

[0014] Compared with prior art, the utility model has the advantages of:

[0015] The reinforcing steel bar positioning mould frame of prefabricated small column of rail transit depot can ensure that the longitudinal deviation and transverse deviation of small column are within controllable range, and reduce the situation that small column installation is returned to work due to inaccurate reserved reinforcement. Meanwhile, the installation efficiency of small column is greatly improved, and the engineering progress is ensured while the construction quality is improved. Its advantages are as follows:

[0016] (1) the positioning device is simple and easy to operate and install;

[0017] (2) the reserved reinforcement is installed efficiently, simply and accurately;

[0018] (3) transverse deviation and longitudinal deviation can be ignored, which meets the design and specification requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 is a top view of the present application;

[0021] Figure 2 is Figure 1 a sectional view of the present application;

[0022] In the figure: 1-X direction support angle steel; 2-positioning steel plate; 3-Y direction support angle steel; 4-assisted positioning sleeve; 5-pre-buried positioning steel bar; 6-transverse connecting bolt; 7-connecting angle steel; 8-inspection trench floor. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The present application will be further described in detail below in combination with the accompanying drawings.

[0026] In combination with Figures 1-2 , the present application is a kind of prefabricated small column of rail transit depot of the reinforcing steel bar positioning mould frame of vehicle section, define the horizontal extension direction of the inspection trench floor as X direction, the left and right sides direction of the inspection trench floor as Y direction, the direction of gravity as Z direction:

[0027] The steel bar positioning mold frame comprises an angle steel support, a positioning steel plate and an auxiliary positioning sleeve; the angle steel support is fixedly arranged on the ground in a spaced manner, extends in the X direction and is symmetrically arranged on both sides of the maintenance trench floor in the Y direction, and a plurality of positioning steel plates are fixedly arranged on the angle steel support in a spaced manner; the positioning steel plate is located above the orthographic projection of the small column pouring position, and a plurality of auxiliary positioning sleeves for accommodating the steel bar penetration are fixedly arranged on the positioning steel plate in the Z direction.

[0028] Preferably, the angle steel support comprises X-direction support angle steels, Y-direction support angle steels and connecting angle steels, wherein the X-direction support angle steels are fixedly supported on both sides of the maintenance trench floor in the X direction in a raised manner, a plurality of Y-direction support angle steels are fixedly connected between the X-direction support angle steels on each side by welding, and a plurality of connecting angle steels are fixedly connected between the X-direction support angle steels on both sides.

[0029] Preferably, the X-direction support angle steels and the connecting angle steels are fixedly connected by transverse connecting bolts.

[0030] Preferably, the two ends of the connecting angle steel are fixedly connected to the X-direction support angle steels on both sides of the positioning steel plate.

[0031] The working principle of the utility model is as follows:

[0032] The main reason for causing the large installation error of the small column is the inaccuracy in pre-embedding the reserved steel bar, and it is particularly necessary to process a set of reserved steel bar embedding auxiliary device by using L50 angle steel and 6mm thick steel plate in order to improve the accuracy of the embedded part. Two parallel angle steels are welded together by using the connecting angle steel as a support framework, then the positioning steel plates are welded at the positions corresponding to each small column, and holes are opened on the steel plates according to the positions of the reserved steel bars of the small columns. In addition, in order to ensure that the transverse deviation of the small column is controllable, two sets of the same type of device can be processed at the same time, and the two sets of devices are bolted through the transverse angle steel during construction, so that a positioning device with a length of 6m or longer can be processed according to the specific situation.

[0033] When the reinforcement binding of the maintenance pit floor plate is completed, the construction personnel install the auxiliary pre-embedding device on site, and only need to check the axis and the position of the first small column, and then temporarily fix the auxiliary device by welding when the auxiliary device is adjusted in place. The construction personnel only need to insert the reserved steel bar into the reserved hole on each positioning steel plate to complete the installation of the reserved steel bar.

[0034] The embodiment comprises longitudinal X-direction support angle steels 1, positioning steel plates 2, Y-direction support angle steels 3, auxiliary positioning sleeves 4, pre-embedded positioning steel bars 5, transverse connecting bolts 6, connecting angle steels 7 and maintenance trench floors 8.

[0035] The X-direction support angle steels 1, the positioning steel plates 2, the Y-direction support angle steels 3 and the auxiliary positioning sleeves 4 are connected into an integral positioning framework by welding in accordance with the arrangement interval of the small columns, so as to facilitate on-site transportation and installation. Figure 1 、 Figure 2As shown, before the concrete pouring of the maintenance trench floor 8, the measurement and line laying are carried out, and one side positioning framework is installed, then the other side positioning framework is connected into a whole device by the transverse connecting bolt 6 and the connecting angle steel 7, after the combination of the device is completed, the positioning steel bars 5 are embedded by the auxiliary positioning sleeve 4, and the embedding of all the embedded steel bars is completed by the inner pushing, so that the accuracy of the embedding of the positioning steel bars can be ensured.

[0036] The above describes the utility model and its implementation mode, and this description is not restrictive, and the shown in the drawings is only one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structure modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. A steel reinforcement positioning formwork for prefabricated small columns in a rail transit vehicle depot, defining the horizontal extension direction of the maintenance trench floor as the X-direction, the left and right sides of the maintenance trench floor as the Y-direction, and the gravity direction as the Z-direction, characterized in that: The rebar positioning formwork includes angle steel brackets, positioning steel plates, and auxiliary positioning sleeves; the angle steel brackets are fixed at intervals above the ground, extending in the X direction and symmetrically arranged in the Y direction on both sides of the maintenance trench floor, and multiple positioning steel plates are fixed at intervals on the angle steel brackets; the positioning steel plates are located above the orthographic projection of the small column pouring position, and multiple auxiliary positioning sleeves for accommodating rebar penetration are fixed in the Z direction on the positioning steel plates.

2. The steel reinforcement positioning formwork for prefabricated small columns in a rail transit vehicle depot according to claim 1, characterized in that: The angle steel bracket includes X-direction supporting angle steel, Y-direction supporting angle steel and connecting angle steel. The X-direction supporting angle steel is raised and fixedly supported on both sides of the maintenance trench floor along the X direction. Multiple Y-direction supporting angle steels are welded and fixedly connected between the X-direction supporting angle steels on each side. Multiple connecting angle steels are fixedly connected between the X-direction supporting angle steels on both sides.

3. The steel reinforcement positioning formwork for prefabricated small columns in a rail transit vehicle depot according to claim 2, characterized in that: The X-direction supporting angle steel and the connecting angle steel are fixedly connected by transverse connecting bolts.

4. The steel reinforcement positioning formwork for precast small columns in a rail transit vehicle depot according to claim 2, characterized in that: The two ends of the connecting angle steel are respectively fixedly connected to the X-direction supporting angle steel on both sides of the positioning steel plate.

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