CN117005720A - Flexible truss temporary supporting structure for laminated slab, laminated slab and method - Google Patents

Abstract

The invention discloses a telescopic truss temporary support structure for a laminated slab, the laminated slab and a method, which solve the problem that the support of the laminated slab needs temporary construction in the prior art, and have the beneficial effects of convenient disassembly and assembly and improvement of working efficiency, and the specific scheme is as follows: the utility model provides a but temporary supporting structure of telescopic truss for superimposed sheet, including a plurality of groups supporting structure spare that are located the superimposed sheet below, the interval sets for the distance setting between two adjacent groups supporting structure spare in order to reserve construction space in the below of superimposed sheet, every group supporting structure spare all links firmly with the one end of moving the piece including being located planar first truss and second truss, the one end of first truss sets up the draw-in groove towards the one end of first truss, but the other end card income draw-in groove of moving the piece removes along the draw-in groove, first retaining member passes second truss draw-in groove wall and with moving the piece butt, the second retaining member passes first truss or second truss and can dismantle with the superimposed sheet and be connected.

Description

A retractable truss temporary support structure for laminated panels, laminated panels and method

Technical field

The invention relates to the field of laminated board construction, in particular to a retractable truss temporary support structure for laminated boards, a laminated board and a method.

Background technique

The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

Prefabricated building structures are becoming more and more popular in the construction process. Prefabricated buildings adopt standardized design, factory production, assembly construction, information management, and intelligent application. They are representatives of modern industrial production methods. Prefabricated buildings have the advantages of reliable quality of building components, energy saving and environmental protection, fast construction speed, and high degree of industrialization.

Composite panels are one of the common components of prefabricated buildings. They are prefabricated monolithic floor slabs made of prefabricated panels and cast-in-situ concrete. Composite panels have good integrity and are suitable for high-rise buildings and large-bay buildings that require higher overall stiffness. For composite slabs with long spans, during the pouring process at the construction site, under the action of the self-weight of the cast-in-place concrete, construction equipment, and various live loads, excessive deflection is prone to occur at the mid-span position, which may lead to cracks in the precast floor, or even The structural performance will be seriously affected, so temporary supports need to be installed during construction of the composite panels. The traditional support method is to erect a steel pipe support structure as a temporary support for the laminated panels to ensure the strength requirements of the laminated panels. The inventor found that the support method of erecting the steel pipe structure requires temporary construction, which is troublesome to disassemble and assemble, and has low efficiency; The length of the temporary support is adjusted according to the span of the composite slab, and the temporary support will occupy the construction space under the composite slab.

Contents of the invention

In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a retractable truss temporary support structure for composite panels, which effectively solves the problems of troublesome disassembly, low efficiency, and occupying the construction space under the composite panels caused by traditional temporary supports.

In order to achieve the above objects, the present invention is achieved through the following technical solutions:

A retractable truss temporary support structure for laminated boards, including several sets of support structural members located below the laminated boards. The adjacent two groups of support structure members are spaced at a set distance to reserve construction space under the laminated boards. A set of supporting structural members includes a first truss and a second truss located on the same plane. One end of the first truss is fixedly connected to one end of the moving part. The second truss is provided with a slot toward one end of the first truss. The other end of the moving part It can be locked into the slot and moved along the slot. The first locking piece passes through the slot wall of the second truss and abuts against the moving piece. The second locking piece can pass through the first truss or the second truss and the stacked plate. Disassemble the connection.

The above-mentioned temporary support structure connects the first truss and the second truss through a moving part. The length of the moving part exposed on the second truss is adjustable, so that the length of the supporting structure can be adjusted to meet the needs of laminates of different spans, and the temporary support structure can be expanded. The scope of use of the support structure; and there is no need to set up external support structures such as scaffolding and other devices, which improves construction efficiency and effectively ensures reliable support for the composite panels; in addition, by setting up several groups of support structure members, between two adjacent support structure members The spacing is set so that there is a construction space reserved between the supporting structural members below the laminated plate or on the side of the supporting structural members, so that multiple construction processes can be carried out at the same time, which is beneficial to improving construction efficiency;

A retractable truss temporary support structure for laminated plates as described above, the moving member is a rod, and the moving member is provided with scale marks along the length direction of the first truss or the second truss;

As described above, a retractable truss temporary support structure is used for composite panels. The rods are hollow structural members and stiffening ribs are provided inside the rods. The hollow rods are conducive to reducing the weight of the rods and facilitate the exposure of the movable parts to the second Adjustment of truss length.

As described above, a telescopic truss temporary support structure is used for laminated panels, and the structures of the first truss and the second truss are the same.

As described above, a retractable truss temporary support structure is used for composite panels. The first truss includes an upper chord and a lower chord. Multiple sets of V-shaped components are connected between the upper chord and the lower chord, thereby ensuring that the first truss and Reliability of the second truss connection.

As described above, a telescopic truss temporary support structure for composite panels is used. In order to avoid interference between the support structure and the beam body when the composite panels are installed on the beam body, the length of the upper chord is greater than the length of the lower chord.

As described above, a retractable truss temporary support structure for laminated plates, the first truss and the second truss are respectively provided with vertical rods toward one end of the moving member, that is, the upper chord rod and the lower chord rod are close to the One end of the moving part is connected with a vertical rod, and the arrangement of the vertical rod is conducive to enhancing the support strength of the middle section of the support structure.

As described above, a retractable truss temporary support structure for composite panels, the moving member includes a first rod connecting two upper chords in the first truss and the second truss, and also includes a connecting member connecting the first truss and the second member between the two lower chords in the second truss.

In a second aspect, the invention also provides a laminated plate. The laminated plate is a prefabricated part. A sleeve is embedded in the lower side of the laminated plate. Internal threads are provided in the sleeve. The laminated plate is temporarily supported by a telescopic truss. The second locking piece and the sleeve described in the structure are connected through a threaded structure, and the setting of the embedded sleeve facilitates the detachable connection of the first truss, the second truss and the composite plate without the need for on-site drilling;

A first steel plate is arranged in the laminated plate. The first steel plate is connected to one end of the sleeve. The other end of the sleeve passes through the second steel plate. The second steel plate is flush with the lower side of the laminated plate.

The above-mentioned construction method of laminated panels includes the following contents:

The laminated panels, moving parts, first truss and second truss are prefabricated in the factory. During the prefabrication process of the laminated panels, sleeves are pre-embedded at the set positions of the laminated panels;

Connect the first truss to one end of the moving part, insert the other end of the moving part into the slot of the second truss, adjust the position of the moving part relative to the second truss according to the span of the stacked plate and the position of the sleeve, and pass the first The locking piece fixes the moving parts;

Opening holes are provided at corresponding positions of the first truss and the second truss to facilitate the installation of the second locking member;

Transport laminates and laminates to the construction site using retractable truss temporary support structures;

At the construction site, stand the laminated board at the specified position and install square wood support pads for stability;

At the construction site, clean the sleeves of the composite panels;

Align the openings provided in the first truss and the second truss with the corresponding stacked plate sleeves, and set the second locking piece;

After the laminated board and the laminated board are connected as a whole using a telescopic truss temporary support structure, they are positioned for construction and hoisted to the steel beam as a whole by a crane;

Carry out on-site pouring of concrete on the upper part of the composite slab. After the pouring is completed and the maintenance requirements are met, the composite slab will be dismantled using a retractable truss temporary support structure.

The above-mentioned beneficial effects of the present invention are as follows:

1) The present invention can be prefabricated in the factory in advance by setting up a temporary support structure, without the need to set up scaffolding and other devices on site, effectively improving construction efficiency; the movable part connects the first truss and the second truss, and the length of the movable part exposed to the second truss can be Adjustment to achieve adjustment of the length of the support structure, whereby the length of the temporary support structure can be adjusted according to the span of the laminated panels, and is suitable for laminated panels of different spans.

2) In the present invention, several sets of supporting structural members are arranged below the laminated board, and the adjacent two groups of supporting structural members are spaced at a set distance, so that construction space can be reserved under the laminated board and basically does not occupy the prefabricated laminated board. In the lower construction space, multiple construction processes can be carried out simultaneously to improve construction efficiency.

3) In the present invention, a sleeve is pre-embedded in the laminated board, and the second locking piece is detachably connected to the sleeve, which facilitates disassembly. Each component can be used repeatedly and assembled and disassembled in one piece. It does not require temporary construction and improves construction efficiency. It also meets the requirements of green and low carbon.

4) In the composite panel construction method provided by the present invention, the composite panels and the retractable truss temporary support structure are all processed in the prefabrication factory, and the construction quality and structural performance can be guaranteed.

Description of the drawings

The description and drawings that constitute a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

Figure 1 is a schematic diagram 1 of a composite panel using a retractable truss temporary support structure to support the composite panel according to one or more embodiments of the present invention.

Figure 2 is a second schematic view of a composite panel using a retractable truss temporary support structure to support the composite panel according to one or more embodiments of the present invention.

Figure 3 is a front view of a retractable truss temporary support structure used to support a composite panel according to one or more embodiments of the present invention.

Figure 4 is a front view of a retractable truss temporary support structure for composite panels according to one or more embodiments of the present invention.

Figure 5 is an enlarged front view of part of the temporary support structure of a telescopic truss for composite panels according to one or more embodiments of the present invention.

FIG. 6 is an enlarged schematic diagram of a partial structure of a temporary support structure using retractable trusses for composite panels according to one or more embodiments of the present invention.

7 is a cross-sectional view of a moving rod in a retractable truss temporary support structure for composite panels according to one or more embodiments of the present invention.

Figure 8 is a schematic diagram of a sleeve arrangement in a laminated panel according to one or more embodiments of the present invention.

In the figure: The spacing or size between each part is exaggerated to show the position of each part, and the schematic diagram is for illustration only.

Among them: 1. Composite plate, 2. Second truss, 3. First truss, 4. Beam body, 5. Second bolt, 6. Sleeve, 7. Second steel plate, 8. First steel plate, 9. Vertical to rod, 10. rod;

101. Backing plate, 102. First bolt, 103. Stiffening rib;

201. Upper chord, 202. Lower chord, 203. First inclined rod, 204. Second inclined rod.

Detailed ways

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings commonly understood by one of ordinary skill in the art to which this invention belongs.

It should be noted that the terms used herein are for the purpose of describing specific embodiments only, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular forms are intended to include the plural forms as well, unless the invention clearly dictates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they Indicate the existence of features, steps, operations, devices, components and/or combinations thereof;

As introduced in the background art, there is a problem in the prior art that temporary supports erected during the construction of composite panels need to be constructed on site. In order to solve the above technical problems, the present invention proposes a retractable truss temporary support structure for composite panels.

Embodiment 1

In a typical implementation of the present invention, as shown in Figures 1 and 2, a retractable truss temporary support structure for laminated panels includes several groups of support structural members located below the laminated panels 1. Two adjacent groups of supports The structural members are spaced at a set distance to reserve construction space under the laminated plate 1. Each set of supporting structural members includes a first truss 3 and a second truss 2 located on the same plane. One end of the first truss 3 is connected to One end of the moving member is fixed, and a slot is provided at one end of the second truss 2 toward the first truss 3. The other end of the moving member can be clamped into the slot and move along the slot. The first locking member passes through the second truss 2. The slot wall is in contact with the moving part, and the second locking part passes through the first truss 3 or the second truss 2 and is detachably connected to the laminated plate 1 .

It should be explained that the structures of the first truss 3 and the second truss 2 are the same.

In this embodiment, the first truss 3 includes an upper chord 201 and a lower chord 202. Multiple sets of V-shaped components are connected between the upper chord 201 and the lower chord 202. The V-shaped components form a triangular frame with the upper chord 201 or the lower chord 202. The structure is a relatively stable geometrically invariant structure. The V-shaped component includes a first inclined rod 203 and a second inclined rod 204. The first inclined rod 203 and the second inclined rod 204 form an acute or right angle. The first inclined rod 203 One end is connected to the upper chord 201, the other end is connected to the lower chord 202, and one end of the first inclined rod 203 is in contact with one end of the second inclined rod 204 (the first and second inclined rods are at the welding points of the upper and lower chords. do not contact, they can contact or be separated by a set distance after welding is completed), one end of the second diagonal rod 204 is connected to the lower chord 202, and the other end is connected to the upper chord 201, thereby ensuring the connection between the first truss and the second truss. reliability.

It can be understood that the upper chord 201, the lower chord 202, the moving member, the first inclined rod 203 and the second inclined rod 204 can be round rods or rectangular rods.

In order to avoid interference between the supporting structure and the beam 4 when the laminated plate 1 is installed on the beam 4, the length of the upper chord 201 is greater than the length of the lower chord 202.

It can be understood that the materials of the first truss 3, the second truss 2 and the moving parts may be steel or aluminum alloy.

Considering the connection between the first truss 3 and the second truss 2 and the composite plate 1 , the upper chord 201 of the first truss 3 or the second truss 2 is respectively provided with several openings. The openings are round holes, and the diameter of the openings is larger than that of the bolts. The outer diameter of the screw is 0-3mm larger.

In addition, it is easy to understand that, with reference to Figures 3 and 4, the first truss 3 and the second truss 2 are each provided with a vertical rod 9 at one end facing the moving part, that is, the upper chord 201 and the lower chord 202 are close to the moving part. A vertical rod 9 is connected to one end. The vertical rod 9 is arranged vertically with the upper chord 201 and the lower chord 202. The arrangement of the vertical rod 9 is conducive to enhancing the support strength of the middle section of the support structure.

Among them, it can be understood that the moving member is the rod 10, and the length direction of the rod 10 is to set a scale line along the length direction of the upper chord 201. According to the scale line, it is convenient for the moving member to be exposed at the end of the second truss slot. Accurate adjustment of the length; specifically, one end of the rod 10 is welded to the first truss 3, and the other end is connected to the second truss 2 through a sleeve. In this embodiment, the outer diameter or side length of the moving member is smaller than the inner diameter or length of the upper chord rod. side length, one end of the upper chord 201 of the second truss is provided with a slot, and one end of the moving member is inserted into the slot. The size of the slot matches the size of one end of the rod 10 to achieve the engagement of the two.

Referring to Figure 7, the rod 10 is a hollow structural member with stiffening ribs 103 provided inside the rod 10. The hollow rod 10 is conducive to reducing the weight of the rod and facilitates the adjustment of the length of the second truss when the moving parts are exposed.

Specifically, the moving member includes a first rod connecting two upper chords 201 in the first truss 3 and the second truss 2, and also includes a first rod connecting two lower chords 202 in the first truss 3 and the second truss 2. the second member.

In order to realize the fixation of the moving part after moving relative to the second truss 2, the upper chord 201 or the lower chord 202 of the second truss 2 is provided with a first hole in the slot wall. Referring to Figures 5 and 6, the slot wall is in the first hole. A backing plate 101 is provided outside the hole. The screw hole provided in the backing plate 101 is aligned with the first hole. A first locking member such as a first bolt 102 passes through the screw hole of the backing plate 101 and locks with the first hole.

It is easy to understand that the inner diameters of the first hole and the screw hole are both 0-1 mm larger than the maximum outer diameter of the first bolt 102 .

In addition, in some examples, in order to further improve the stable support of the composite panels by the temporary support structure, longitudinal rods are set between two adjacent support structural members, and the longitudinal rods are connected to the upper chord of the first truss on the same side, or the second truss on the same side. The upper chord of the truss, the longitudinal rod is hollow, and the end is provided with an end plate. The end plate is perpendicular to the upper chord and is connected through a third locking piece such as a third bolt. The third bolt passes through the end plate and the upper chord and is then tightened by a nut. fixed.

The temporary support structure provided by this embodiment connects the first truss and the second truss through a moving member. The length of the moving member exposed to the second truss is adjustable, so that the length of the supporting structure member can be adjusted to meet the needs of laminated plates with different spans. It broadens the scope of use of temporary support structures; and there is no need to erect external support structures such as scaffolding, which improves construction efficiency and effectively ensures reliable support for composite panels; in addition, by setting up several sets of support structure members, two adjacent supports The intervals between the structural members are set at a set distance, so that construction space is reserved between the supporting structural members below the laminated plate or on the sides of the supporting structural members, so that multiple construction processes can be carried out at the same time, which is beneficial to improving construction efficiency.

Embodiment 2

This embodiment provides a laminated plate. As shown in Figure 8, the laminated plate 1 is a prefabricated part. A sleeve 6 is pre-embedded on the lower side of the laminated plate. Internal threads are provided in the sleeve 6. The one described in Embodiment 1 In the temporary support structure of a telescopic truss for composite plates, the second locking member such as the second bolt 5 is connected to the sleeve 6 through a threaded structure. The inner diameter of the sleeve 6 is 0-2mm larger than the maximum outer diameter of the second bolt 5. The setting of the buried sleeve facilitates the detachable connection of the first truss 3, the second truss 2 and the composite plate 1 without the need for on-site drilling.

In this embodiment, the laminated plate 1 is a reinforced concrete laminated plate, and the laminated plate 1 is provided with longitudinal steel bars of the bottom plate and transverse steel bars of the bottom plate.

Among them, a first steel plate 8 is provided in the laminated plate 1. The lower surface of the first steel plate 8 is connected to one end of the sleeve 6. Specifically, the connection can be welded. The other end of the sleeve 6 passes through the second steel plate 7. The second steel plate 7 is connected to the second steel plate 7. The lower side of the laminated plate 1 is flush; it can be understood that the first steel plate 8 or the second steel plate 7 is welded to the longitudinal steel bars of the bottom plate or the transverse steel bars of the bottom plate.

Specifically, the bottom end of the sleeve 6 passes through the through hole opened in the second steel plate 7 and is flush with the lower surface of the second steel plate 7. The upper surface of the second steel plate 7 is welded to the sleeve 6, and the second steel plate 7 passes through The edge of the hole is coated with glue to secure the sleeve 6.

Embodiment 3

This embodiment provides a construction method for laminated panels, including the following:

The laminated panels, moving parts, first truss and second truss are prefabricated in the factory. During the prefabrication process of the laminated panels, sleeves are pre-embedded at the set positions of the laminated panels;

Connect the first truss to one end of the moving part, insert the other end of the moving part into the slot of the second truss, adjust the position of the moving part relative to the second truss according to the span of the stacked plate and the position of the sleeve, and pass the first The locking member such as the first bolt passes through the slot wall and contacts the moving member to fix the position of the moving member and the second truss;

Opening holes are provided at corresponding positions of the first truss and the second truss to facilitate the installation of the second locking member;

Transport laminates and laminates to the construction site using retractable truss temporary support structures;

At the construction site, stand the laminated board at the specified position and install square wood support pads for stability;

At the construction site, clean the sleeves of the composite panels;

Align the openings provided in the first truss and the second truss with the corresponding stacked plate sleeves, and set the second locking piece;

After the laminated board and the laminated board are connected as a whole using a telescopic truss temporary support structure, they are positioned for construction and hoisted to the steel beam as a whole by a crane;

Carry out on-site pouring of concrete on the upper part of the composite slab. After the pouring is completed and the maintenance requirements are met, the composite slab will be dismantled using a retractable truss temporary support structure.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a but temporary supporting structure of telescopic truss for superimposed sheet, a serial communication port, including a plurality of groups supporting structure spare that are located the superimposed sheet below, the interval sets for the distance setting between two adjacent groups supporting structure spare in order to reserve construction space in the below of superimposed sheet, every group supporting structure spare all links firmly with the one end of moving the piece including being located coplanar first truss and second truss, the one end of first truss sets up the draw-in groove towards the one end of first truss, the other end of moving the piece can block into the draw-in groove and remove along the draw-in groove, first retaining member passes second truss draw-in groove wall and with moving the piece butt, the second retaining member passes first truss or second truss and can dismantle with the superimposed sheet and be connected.

2. The temporary support structure for a retractable truss for a composite slab according to claim 1, wherein the moving member is a rod member, and the moving member is provided with graduation marks along a length direction of the first truss or the second truss.

3. The temporary support structure of a telescopic truss for a composite slab according to claim 2, wherein the rod is a hollow structural member, and stiffening ribs are provided in the rod.

4. The temporary support structure for a collapsible truss for a composite slab according to claim 1, wherein said first truss is of the same structure as said second truss.

5. The temporary support structure for a retractable truss for a composite slab according to claim 1, wherein the first truss comprises an upper chord and a lower chord, and a plurality of V-shaped assemblies are connected between the upper chord and the lower chord.

6. The temporary support structure for a composite slab according to claim 5, wherein the length of the upper chord is longer than the length of the lower chord.

7. The temporary support structure for a telescopic truss for a composite slab according to claim 5, wherein a vertical rod is provided at one end of each of the first truss and the second truss toward the moving member, that is, one end of the upper chord member and the lower chord member, which is close to the moving member, is connected with the vertical rod.

8. The temporary support structure of a telescoping truss for a composite slab according to claim 5, wherein the moving member comprises a first rod member connecting between two upper chords of the first truss and the second truss, and a second rod member connecting between two lower chords of the first truss and the second truss.

9. A laminated slab, characterized in that the laminated slab is a prefabricated member, a sleeve is pre-embedded on the lower side surface of the laminated slab, internal threads are arranged in the sleeve, and a second locking piece in the telescopic truss temporary supporting structure for the laminated slab according to any one of claims 1-8 is connected with the sleeve through a thread structure;

the first steel plate is arranged in the laminated plate and connected with one end of the sleeve, the other end of the sleeve penetrates through the second steel plate, and the second steel plate is flush with the lower side face of the laminated plate.

10. The method for constructing a laminated slab according to claim 9, comprising the following steps:

prefabricating the laminated slab, the moving part, the first truss and the second truss in a factory, and pre-burying a sleeve at a set position of the laminated slab in the prefabricating process of the laminated slab;

connecting the first truss with one end of the moving member, inserting the other end of the moving member into a clamping groove of the second truss, adjusting the position of the moving member relative to the second truss according to the span of the superimposed sheet and the position of the sleeve, and fixing the moving member through the first locking member;

openings are formed in the corresponding positions of the first truss and the second truss so as to facilitate the arrangement of the second locking piece;

transporting the laminated slab and the temporary support structure of the telescopic truss to a construction site;

standing the laminated slab at a specified position on a construction site, and installing a square wood support pad for stabilization;

cleaning holes of the sleeve of the laminated slab at a construction site;

aligning the openings formed in the first truss and the second truss with the corresponding laminated slab sleeves, and arranging a second locking piece;

after the laminated slab and the temporary support structure of the telescopic truss are connected into a whole, construction positioning is carried out, and the whole is hoisted to a steel beam through a crane;

and (3) performing in-situ pouring work of the concrete on the upper part of the laminated slab, and dismantling the laminated slab by using a telescopic truss temporary supporting structure after the pouring is completed and the maintenance requirement is met.