CN206477497U - A kind of trussing for exempting to support steel form - Google Patents

Abstract

The embodiment of the utility model belongs to the technical field of building structures, and provides a truss system of a support-free steel formwork. The truss system includes a steel bar truss installed on the steel beam, a steel formwork installed on the steel bar truss, and hook connectors. The lower surface of the steel formwork is welded with several back bars, and one end of the hook connector is hung on the steel bar. On the truss, the other end is detachably connected with the steel formwork. Distributing the welding of the back bar on the steel formwork can enhance the overall rigidity of the steel formwork, so that when the steel truss is erected in a large span range, the stability of the steel formwork can be guaranteed without using a large number of scaffolding for support, and after the concrete is poured When the steel formwork is removed for turnover, the steel formwork can be removed by applying force to the back bar to prevent damage to the steel formwork and prolong the service life of the steel formwork.

Description

A truss system for free-support steel formwork

technical field

The utility model belongs to the technical field of building structures, in particular to a truss system of a support-free steel formwork.

Background technique

Commonly used truss systems include steel trusses, reinforced concrete trusses, prestressed concrete trusses, wooden trusses, steel and wood composite trusses, and steel and concrete composite trusses. According to the shape, the trusses are divided into triangular trusses, trapezoidal trusses, polygonal trusses, parallel chord trusses, and vierendeel trusses. When choosing the truss form, the use, material, support method and construction conditions of the truss should be considered comprehensively. Under the premise of meeting the use requirements, the materials and labor used for manufacturing and installation should be minimized.

At present, in reinforced concrete trusses, due to the overall rigidity of the steel formwork is not strong, when the steel formwork is erected in the case of a large span range, it is necessary to use a large number of scaffolding for reverse support work, and the construction workload is large; After the completion, the steel formwork will not be disassembled, but the ceiling needs to be covered, which increases the cost; and some steel formwork needs to be removed with a crowbar when dismantling, but the crowbar is too strong to easily damage the steel formwork, which reduces the steel formwork service life.

Utility model content

The technical problem to be solved by the embodiment of the utility model is to provide a truss system without supporting steel formwork, which aims to solve the construction problem that a large number of scaffolds need to be used for support when the truss system of the prior art is erected in a large span range. The large amount and the problem that the steel formwork is easily damaged when the steel formwork is disassembled.

The embodiment of the utility model is achieved in this way. A truss system without supporting steel formwork includes a steel bar truss installed on a steel beam and a steel formwork installed on the steel bar truss. The truss system also includes a hook connection The lower surface of the steel formwork is welded with several back bars, one end of the hook connector is hung on the steel truss, and the other end is detachably connected to the steel formwork.

Further, the plurality of back bars are parallel to each other, and their length direction is arranged along the length direction of the steel bar truss.

Further, the plurality of back bars are evenly distributed on the lower surface of the steel formwork.

Further, the back bar is C-shaped steel or square steel pipe.

Further, the two ends of the steel bar truss are welded on the steel beam, the hook connector includes a hanger and a bolt, the hanger is hung on the steel bar truss, and the tail ends of the bolts pass through the After the back bar and the steel template, it is threadedly connected with the hanger, and the head end of the bolt leans against the back bar.

Further, the steel bar truss includes mutually perpendicular beams and vertical beams connected as a whole, the vertical beams are located at both ends of the horizontal beams, the hangers are hung on the horizontal beams, and the vertical beams are welded on steel on the beam.

Further, several supports for supporting the steel formwork are installed on the beam.

Further, the supporting member includes a foot and a bracket connected as a whole, one edge of the foot supports the steel formwork, and the bracket is rotatably clamped on the beam.

Further, the plurality of support members are evenly distributed along the length direction of the beam.

Further, the support member is made of plastic.

Compared with the prior art, the embodiment of the utility model has the beneficial effect that: the lower surface of the steel formwork in the utility model is welded with several back bars, one end of the hook connector is hung on the steel bar truss, and the other end is connected with the steel formwork. The steel formwork can be suspended by detachable connection; the overall rigidity of the steel formwork is enhanced through the welding of the back bar, so that when the steel truss is erected in a large span range, the stability of the steel formwork can be guaranteed without using a large number of scaffolding for support, and When the steel formwork is dismantled after the pouring of concrete is completed, the steel formwork can be removed by applying force to the back bar to prevent damage to the steel formwork and prolong the service life of the steel formwork.

In addition, when the steel formwork is disassembled and transported, use the back bar to stack the steel formwork to prevent the steel formwork from slipping during transportation and improve the safety of transportation and stacking.

Description of drawings

Fig. 1 is the overall structural schematic diagram of the truss system of the free-support steel formwork provided by the embodiment of the utility model;

Fig. 2 is a structural schematic diagram of the truss system of the free-support steel formwork shown in Fig. 1 installed on the steel beam;

Fig. 3 is a schematic diagram of the hook connector in Fig. 1;

Fig. 4 is a schematic structural diagram of a support provided by Embodiment 1 of the present invention;

Fig. 5 is a schematic structural diagram of the support provided by the second embodiment of the utility model;

Fig. 6 is a schematic diagram of the stacked state of the steel formwork in Fig. 1 .

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1 and Figure 2, it is a preferred embodiment of the truss system of the free-support steel formwork provided by the embodiment of the present invention. The truss system includes a steel truss 2 installed on the steel beam 1, a The steel formwork 3 and the hook connector 4 on it. The two ends of the steel truss 2 are welded on the steel beam 1, and the lower surface of the steel formwork 3 is welded with a number of back bars 5, which are evenly distributed on the lower surface of the steel formwork 3, and the upper end of the hook connector 4 is hung It is arranged on the steel bar truss 2, and its lower end is detachably connected with the steel formwork 3, so that the steel membrane plate 3 can be suspended on the steel bar truss 2 or removed from the steel bar truss 2. The above-mentioned back bars 5 are parallel to each other, and their length direction is arranged along the length direction of the steel bar truss 2 to ensure the overall rigidity of the steel formwork 3 .

In the above-mentioned embodiment, the back bar 5 is a C-shaped steel or a square steel pipe. In this embodiment, the back bar 5 is a C-shaped steel, and two adjacent C-shaped steels are set up against each other to form a group of double back bars 5, and several groups of double back bars 5 are evenly distributed on the lower surface of the steel formwork 3 , so that the overall rigidity of the steel formwork can achieve the best effect. Please refer to Fig. 6, after the steel formwork 3 is disassembled, the back bars 5 welded on the steel formwork 3 are stacked in dislocation, and the back bars 5 play a limiting role on the steel formwork 3 to prevent the steel formwork 3 from slipping, ensuring Stability and safety during transportation and stacking.

Please refer to FIG. 3 together, the hook connector 4 includes a hanger 41 and a bolt 42 . There is a hook mouth 410 on the hanger 41. When the steel formwork 3 is installed and used, the hanger 41 is hung on the steel bar truss 2 through the hook mouth 410. The hanger 41 is threaded, and the head end of the bolt 42 leans against the back bar 5 . In order to enhance the connection effect between the bolt 42 and the back bar 5 , a gasket 43 is arranged between the head end of the bolt 42 and the back bar 5 , and the bolt 42 passes through the gasket 43 before passing through the back bar 5 .

The above-mentioned steel bar truss 2 includes vertical beams 21 and vertical beams 22 which are connected as a whole. The upright beam 22 is located at both ends of the crossbeam 21 , the pendant 41 is hung on the crossbeam 21 , and the upright beam 22 is welded on the steel beam 1 . In this embodiment, two beams 21 parallel to each other are provided, and both sides of the upper end of the pendant 41 have hook openings 410. The pendant is located between the two beams 21, and is respectively hung on the On the two beams 21, the stability of hanging the pendant 41 is guaranteed. The height of the steel formwork 3 can be adjusted to be equal to the upper end surface of the steel beam 1 by the threaded length of the bolt 42 and the hanger 41; 41, and unscrewed from the concrete cover, so that the steel formwork 3 can be disassembled from the steel bar truss 2, which is convenient for disassembly and assembly, convenient for the turnover of the steel formwork 3, saving construction materials and reducing construction costs.

Please also refer to FIG. 4 , on the beam 21 are installed a number of supports 6 made of plastic for supporting the steel template 3 , and the supports 6 are evenly distributed along the length direction of the beam 21 . The space between the beam 21 and the steel formwork 3 is used for pouring the concrete protection layer. The size of the support member 6 is customized according to the concrete engineering specification. During the tightening process of the bolt 42 and the hanger 41, the support member 6 can support the steel formwork 3 to ensure the stability of the steel formwork 3 and ensure that the steel formwork 3 and the The required thickness is provided between the beams 21 to pour the concrete protection layer. One embodiment of the support 6 in the embodiment of the utility model is that the support 6 includes a leg 61 and a bracket 62 connected together, and one edge on the leg 61 supports the steel formwork 3, so that after the pouring of the concrete protective layer is completed , the bottom end of the support foot 61 on the support member 6 is hardly exposed, which can be ignored, and the process of grouting or putty is omitted, and the construction cost is reduced. The bracket 62 is rotatably clamped on the beam 21 , which can adjust the angle of the bracket 62 to support the upper surface of the steel formwork 3 . Please refer to Fig. 5, another form of the embodiment of the present utility model is that the support 6' is prefabricated by cement, the upper end of the support 6' is covered on the beam 21, and its lower surface is horizontal, so , After pouring the concrete protective layer, there is no need to carry out the process of grouting or putty.

To sum up, the truss system of the free-support steel formwork in the embodiment of the utility model has the following advantages:

(1) It is convenient for the steel formwork 3 to be disassembled and turned over for use, reducing damage to the steel formwork 3 and prolonging the service life of the steel formwork 3 . (2) There is no need to dismantle the back bar 5 during the dismantling of the steel formwork 3, which improves the disassembly and turnaround installation speed of the steel formwork 3, and speeds up the construction progress. (3) Reduce the exposed area of the feet 61 on the support member 6 after pouring concrete, thereby eliminating the process of grouting or putty, and reducing construction costs. (4) When the steel bar truss 2 is erected in a relatively large span, there is no need to use a large number of scaffolds to support the steel formwork 3, which saves construction workload and facilitates installation. (5) The back bar 5 welded on the steel formwork 3 can prevent the steel formwork 3 from slipping during transportation, and improve the stability and safety of transportation and stacking.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. a kind of trussing for exempting to support steel form, including steel bar girder on girder steel and installed in the reinforcing bar purlin Steel form on frame, it is characterised in that the trussing also includes gib head connector, the lower surface welding point of the steel form Some back of the body thick sticks are furnished with, one end of the gib head connector is hung on the steel bar girder, its other end can with the steel form Dismounting connection.

2. the trussing as claimed in claim 1 for exempting to support steel form, it is characterised in that described some back of the body thick sticks are mutually put down OK, and length direction of its length direction along the steel bar girder is set.

3. the trussing as claimed in claim 2 for exempting to support steel form, it is characterised in that described some back of the body thick sticks are equably It is distributed in the lower surface of the steel form.

4. the trussing as claimed in claim 1 for exempting to support steel form, it is characterised in that the back of the body thick stick is C-type steel or side Steel pipe.

5. exempting from as described in any one in Claims 1-4 supports the trussing of steel form, it is characterised in that the steel The two ends of muscle truss are welded on girder steel, and the gib head connector includes suspension member and bolt, and the suspension member is hung on the reinforcing bar On truss, the tail end of the bolt sequentially passes through the back of the body thick stick with after steel form, being threadedly coupled with the suspension member, the bolt Head end be resisted against it is described the back of the body thick stick on.

6. the trussing as claimed in claim 5 for exempting to support steel form, it is characterised in that the steel bar girder includes being linked as The orthogonal crossbeam and vertical beam of one, the vertical beam are located at the two ends of the crossbeam, and the suspension member is hung on the crossbeam On, the vertical beam is welded on girder steel.

7. the trussing as claimed in claim 6 for exempting to support steel form, it is characterised in that being provided with the crossbeam is used for If supporting the dry support arm of the steel form.

8. the trussing as claimed in claim 7 for exempting to support steel form, it is characterised in that the support member includes being linked as one An edge on the leg and support of body, the leg supports the steel form, and the support is rotationally connected to the horizontal stroke Liang Shang.

9. exempt to support the trussing of steel form as claimed in claim 7 or 8, it is characterised in that if the dry support arm It is uniformly distributed along the length direction of the crossbeam.

10. exempt to support the trussing of steel form as claimed in claim 7 or 8, it is characterised in that the support member is by plastics It is made.