CN106930471A - A kind of quick assembled type pipe constrains prestressed component - Google Patents

Abstract

A quick-assembled tube-constrained prestressed component, including prestressed tendons, outer tubes, end plates at the upper and lower ends of the outer tubes, bolt holes with unequal diameters on the upper and lower end plates, and prestressed prestressed tubes with threaded ends. The ribs are inserted into the casing, and the two ends are connected to the mounting nuts in the bolt holes on the upper and lower end plates. Internal filling materials are arranged inside the outer tube and outside the casing with prestressed tendons. By applying prestress to the internal filling materials, the The restraining effect of the outer tube on the inner filling material makes the component have a higher bearing capacity, good anti-seismic and fire resistance, and at the same time, it is easy to disassemble, realizing the reusability of the outer tube and the inner material. The present invention is suitable for column components or permanent column components of temporary buildings, and has the advantages of fast construction speed, superior mechanical performance, etc., and all parts in the components can be reused, and has better economic benefits.

Description

A Quick-Assembly Tube-Constrained Prestressed Component

technical field

The invention belongs to the technical field of building structures, and in particular relates to a fast-assembling tube-constrained prestressed component.

Background technique

Nowadays, sudden disasters are getting more and more attention, and the construction of temporary buildings has become an important part of post-disaster reconstruction work. Temporary buildings can be changed according to different usage needs, the whole or part of them can be moved, and at the same time, they can be easily assembled. After the temporary building completes its mission, the building materials become permanent elements, which puts forward higher ecological requirements for the materials of temporary buildings. The building materials in temporary buildings should be collected from raw materials, manufactured products, Four aspects of application process and post-use recycling are considered. The column member is the main force-bearing member in the temporary structure. If the key column member is damaged, it will even cause the continuous collapse of the structure, which will bring safety hazards to people's lives and property. Traditional column components often use reinforced concrete columns, steel-concrete composite columns or steel columns. The construction cost of reinforced concrete columns is the lowest, but due to the need for formwork, formwork removal and other processes, the construction speed is slow and it is not suitable for demolition. It is not suitable for Temporary construction. Steel-concrete composite columns have the advantages of high bearing capacity, good seismic performance, and fast construction speed. They can be used in temporary buildings to give full play to their mechanical properties. demolition and are therefore not suitable for temporary components. For steel structural components, due to the disadvantages of poor fire resistance and low rigidity of steel components, there are also certain defects in temporary buildings.

Contents of the invention

The purpose of the present invention is to solve the defects of traditional reinforced concrete columns, steel-concrete composite columns and steel columns used in temporary buildings, and propose a quick-assembled tube-constrained prestressed component, including outer tubes, internal filling materials, prestressed Stress tendons, sleeves, end plates and nuts.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A quick-assembled tube-constrained prestressed member, including prestressed tendons, outer tubes, end plates at the upper and lower ends of the outer tubes, bolt holes with unequal diameters on the upper and lower end plates, and threaded prestressed parts at the ends. The ribs are inserted into the casing, and the two ends are connected to the mounting nuts in the bolt holes on the upper and lower end plates, and the inner filling material is set inside the outer tube and outside the casing with prestressed tendons inside;

The tightening nut applies a pretightening force to the prestressed tendon, compresses the internal filling material, and makes the components form a whole to bear the force together.

The end plate can be in contact with the outer tube or leave a gap.

The outer layer pipe adopts circular, rectangular or polygonal cross-section, and adopts stainless steel pipe, ordinary steel pipe, stainless steel composite pipe or FRP pipe.

The internal filling material is sand, soil or other powder fillings.

The sleeves are plastic sleeves, steel sleeves or FRP sleeves.

The end plate can be made of ordinary steel plate or stainless steel plate, and the cross section of the end plate is convex.

The beneficial effects of the present invention are:

The present invention utilizes the combined effect of the outer layer tube and the inner filling material, by applying longitudinal prestress to the inner filling material, causing the inner filling material to produce transverse deformation, and the outer layer tube is in a state of hoop tension, which can effectively restrain the inner material so that it is in a state of In the three-way compression state, the bearing capacity, ductility and energy dissipation capacity of the component are significantly improved. Compared with traditional reinforced concrete components, this type of component has the advantages of fast construction speed, high bearing capacity, and good seismic performance; compared with steel-concrete composite components, it has the characteristics of easy disassembly. When the component is removed, unloading is applied to the internal filling material The prestressing on the surface, the internal material can be easily taken out, so as to realize the reuse of the external pipe structure and internal materials; compared with the traditional steel components, it has the advantages of high rigidity, high bearing capacity, and good fire resistance, so the rapid assembly type pipe restraint Prestressed components have broad application prospects in temporary buildings, and can also be used as permanent components due to their superior mechanical properties.

Description of drawings

Fig. 1 is a vertical sectional view of the quick-fit tube-constrained prestressed member of the present invention.

Fig. 2 is a cross-sectional view of the quick-fit tube restraint prestressed member of the present invention.

Figure 3 Sectional view of the end plate.

detailed description

The present invention is further described in conjunction with accompanying drawing.

As shown in Figures 1, 2, and 3, a quick-assembly tube-constrained prestressed member includes prestressed tendons 1 and an outer layer tube 3, and is characterized in that the upper and lower ends of the outer layer tube 3 are respectively provided with end plates 5, and the upper and lower The end plate 5 is provided with bolt holes 7 of different diameters, the prestressed tendon 1 with thread at the end is inserted into the casing 2, and the two ends are connected to the mounting nuts 6 in the bolt holes 7 on the upper and lower end plates 5, and the inner part of the outer tube 3 And the inner filling material 4 is arranged outside the casing 2 with the prestressed tendon 1 inside;

The tightening nut 6 applies a pre-tightening force to the prestressed tendon 1, and compresses the internal filling material 4, so that the components form a whole to bear force together.

The end plate 5 can be in contact with the outer tube 3 or leave a gap.

The outer tube 3 adopts a circular, rectangular or polygonal section, and adopts stainless steel tube, common steel tube, stainless steel composite tube or FRP tube.

The internal filling material 4 is sand, soil or other powdery fillings.

The casing 2 is a plastic casing, a steel casing or an FRP casing.

The end plate 5 can be made of ordinary steel plate or stainless steel plate, and the cross section of the end plate 5 is convex.

The working principle of the present invention is:

First, insert the prestressed tendons 1 with threaded ends into the casing 2; then put the prestressed tendons 1 with the casing 2 into the outer tube 3, and fix the lower end plate 5 with predetermined bolt holes on the outer At the bottom of the layer pipe 3, the prestressed tendon 1 is fixed by the mounting nut 6, and the end plate 5 can be made into a variable cross-section form as shown in Figure 3. The end plate 5 on the side with a smaller cross-section is inserted into the outer layer pipe 3, and the Bolt holes 7 with different diameters are opened; then the internal filling material 4 is filled into the outer tube 3, the upper end plate 5 with predetermined bolt holes is set on the top of the outer tube 3, and then nuts 6 are installed on the upper part of the prestressing tendons 3, The nut 6 is placed in the bolt hole 7, and the nut 6 is tightened to apply a pre-tightening force to the prestressed tendon 1, thereby compressing the internal filling material 4, and the installation of the component can be completed after the predetermined pre-tightening force is applied, so that the component forms a whole joint force .

The method is to fill the tube with material, and by applying prestress to the internal filling material, the outer layer tube is used to restrain the internal filling material, so that the component has high bearing capacity and good fire resistance, which is easy to disassemble, and at the same time realizes the external Reuse of tubes and interior materials. Specific implementation method: After the material is filled in the tube, prestressing is applied to the core filling material through the prestressed tendons set in the tube. According to the requirements of the use function, the outer tube can bear part of the vertical load or not bear the vertical load. After the completion and the end plate is fixed, the integral force-bearing member is formed. The column component of the invention applicable to temporary buildings can also be used for permanent column components. The component has the advantages of high bearing capacity and superior seismic performance, and all components in the component can be reused, which has good economic benefits.

Claims (6)

1. a kind of quick assembled type pipe constraint prestressed component, including presstressed reinforcing steel（1）, outer tube（3）, it is characterised in that outward Layer pipe（3）Upper and lower side is respectively equipped with end plate（5）, upper and lower end plate（5）It is provided with not equal diameter bolt hole（7）, end is screwed Presstressed reinforcing steel（1）Plug-in-sleeve（2）In, two ends connect upper and lower end plate（5）Upper bolt hole（7）Interior installation nut（6）, outer tube （3）Internal and inside is provided with presstressed reinforcing steel（1）Sleeve pipe（2）Outer setting inside packing material（4）；

Described tightens nut（6）Apply pretightning force, the internal packing material of compression to presstressed reinforcing steel (1)（4）, form component whole The common stress of body.

2. a kind of quick assembled type pipe according to claim 1 constrains prestressed component, it is characterised in that described end plate （5）Can be with outer tube（3）Contact or leave gap.

3. a kind of quick assembled type pipe according to claim 1 constrains prestressed component, it is characterised in that described outer layer Pipe（3）Using circular, rectangle or polygonal cross-section, managed using stainless steel tube, common steel tube, stainless steel composite pipe or FRP.

4. a kind of quick assembled type pipe according to claim 1 constrains prestressed component, it is characterised in that described inside Packing material（4）Using sand, soil or other powdery fillers.

5. a kind of quick assembled type pipe according to claim 1 constrains prestressed component, it is characterised in that described sleeve pipe （2）Using plastic bushing, steel sleeve or FRP sleeve pipes.

6. a kind of quick assembled type pipe according to claim 1 constrains prestressed component, it is characterised in that described end plate （5）General steel plate or stainless-steel sheet, described end plate can be used（5）Cross section is convex.