A tension-resistant and pressure-non-transmitting tie system for steel plate-concrete composite walls

Abstract

The present invention discloses a tension-resistant and pressure-non-transmitting tie system for a steel plate-concrete composite wall, comprising: steel tie rods, which are arranged in rows and columns inside the concrete, and both ends thereof are fixedly penetrated on two oppositely arranged steel panels; steel sleeves, there are multiple steel sleeves, which are respectively sleeved on the corresponding steel tie rods, and a polytetrafluoroethylene material is filled between the steel sleeves and the steel tie rods. The tie system of the present invention can completely transmit the tension between the steel panels on both sides of the steel plate-concrete composite wall, and effectively release the pressure between the two steel panels, thereby greatly reducing the damage to the steel panels caused by external impact loads.

Description

Technical Field

[0001] The present invention relates to the technical field of steel plate concrete composite wall structures in nuclear power plants, and more specifically to a tension-resistant and non-pressure-transmitting tension system for steel plate concrete composite walls. Background Art

[0002] In the design and construction of steel plate concrete composite wall structures in nuclear power plants, the tension system of the steel plate concrete composite wall is an important part to ensure the combined stress of the steel panel and the core concrete. The tension system generally uses tension bars or truss structures composed of stiffeners, profiled steels, and tension steel strips. Since the general tension system is subject to the double constraints of the steel panels on both sides and the inner core concrete, it can transfer both tension and pressure between the steel panels. When the steel plate concrete composite wall in a nuclear power plant is subjected to a flying impact load on one side, in order to resist damage, the stress state of the tension system needs to be "tension-resistant and non-pressure-transmitting". However, the current general tension system cannot achieve the stress requirement of "tension-resistant and non-pressure-transmitting" under flying impact loads, so it often causes damage to the steel panels on both sides and reduces the service life of the steel panels.

[0003] Therefore, how to provide a tension system for a steel plate concrete composite wall in a nuclear power plant that can normally bear the load under flying impact loads, ensure that the steel panels on both sides are not damaged, and extend the service life of the steel panels is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a tension system for a steel plate concrete composite wall in a nuclear power plant that can normally bear the load under flying impact loads, ensure that the steel panels on both sides are not damaged, and extend the service life of the steel panels, which is tension-resistant and non-pressure-transmitting.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tension system for a steel plate concrete composite wall that is tension-resistant and non-pressure-transmitting, comprising:

[0007] Steel tie rods, which are arranged in rows and columns inside the concrete, and both ends thereof are fixedly penetrated through two oppositely arranged steel panels;

[0008] Steel sleeves, there are multiple steel sleeves, and each steel sleeve is sleeved on the corresponding steel tie rod, and a polytetrafluoroethylene material is filled between the steel sleeve and the steel tie rod.

[0009] As can be seen from the above technical solutions, compared with the prior art, the present invention discloses a tension-resistant and pressure-non-transmitting tie system for a steel plate concrete composite wall. Since the steel tie rods directly restrain the two side steel plates, during the concrete pouring construction, a certain amount of tension can be provided, and the tension between the two side steel plates can also be effectively transmitted under the action of external impact loads. Moreover, the setting of the steel sleeves can effectively isolate the restraint of the concrete on the steel tie rods, and due to the polytetrafluoroethylene material, the frictional resistance between the steel sleeves and the steel tie rods is reduced, making the steel tie rods prone to instability and bending under axial pressure. Therefore, the steel tie rods can effectively release the pressure between the two side steel plates. Thus, the present invention can completely transmit the tension between the two side steel plates of the steel plate concrete composite wall and effectively release the pressure between the two side steel plates, thereby greatly reducing the damage of external impact loads to the steel plates, which is an effective supplement to the general tie system used in the current steel plate concrete composite wall of nuclear power plants.

[0010] Furthermore, both ends of the steel tie rods are fixedly connected to the two steel plates through fasteners.

[0011] Furthermore, the fasteners include:

[0012] A fastening nut which is screwed onto the end of the steel tie rod;

[0013] A gasket which is tightly pressed between the steel plate and the fastening nut.

[0014] The beneficial effect of adopting the above technical solution is that the structure of the fasteners is simple, which is easy for the disassembly and assembly of the steel tie rods and the steel plates.

[0015] Furthermore, one end of the steel sleeve is fixedly connected to the inner wall of its corresponding steel plate.

[0016] Furthermore, one end of the steel sleeve is fixedly welded to the inner wall of its corresponding steel plate.

[0017] Furthermore, the length of the steel sleeve is less than the distance between the two steel plates.

[0018] The beneficial effect of adopting the above technical solution is that under the action of external impact loads, since the steel sleeve is slightly shorter and does not contact both side steel plates simultaneously, it can effectively isolate the restraint of the inner core concrete on the steel tie rods.

[0019] Furthermore, the difference between the distance between the two steel plates and the length of the steel sleeve is 5 cm.

[0020] Furthermore, the steel tie rod is a round rod, and the ratio of its length to its diameter is 160 - 250.

[0021] The beneficial effects of adopting the above technical solution are that the steel tie rods are slender rods, which are prone to buckling and bending under force, facilitating the release of the pressure between the two steel panels by the steel tie rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0023] Figure 1 The drawings are an axonometric structural schematic diagram of a tension-resistant and non-pressure-transmitting steel plate concrete composite wall tension system provided by the present invention.

[0024] Figure 2 The drawings are Figure 1 a top view structural schematic diagram of.

[0025] Figure 3 The drawings are Figure 2 a structural enlarged schematic diagram of the partial area A in. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] Refer to Figures 1 - 3 , the embodiments of the present invention disclose a tension-resistant and non-pressure-transmitting steel plate concrete composite wall tension system, including:

[0028] Steel tie rods 1 are arranged in rows and columns inside the concrete 100, and both ends thereof are fixedly penetrated and fixed on two relatively arranged steel panels 200;

[0029] Steel sleeves 2 are multiple and are respectively sleeved on the corresponding steel tie rods 1, and a polytetrafluoroethylene material 3 is filled between the steel sleeves 2 and the steel tie rods 1.

[0030] Both ends of the steel tie rods 1 and the two steel panels 200 are fixedly connected through fasteners 4.

[0031] The fasteners 4 include:

[0032] A fastening nut 41 is screwed on the end of the steel tie rod 1;

[0033] The gasket 42 is tightly disposed between the steel panel 200 and the fastening nut 41 .

[0034] One end of the steel casing 2 is fixedly connected to the inner wall of the corresponding steel panel 200 .

[0035] One end of the steel casing 2 is welded and fixed to the inner wall of the corresponding steel panel 200 .

[0036] The length of the steel casing 2 is smaller than the distance between the two steel panels 200 .

[0037] The difference between the distance between the two steel panels 200 and the length of the steel casing 2 is 5 cm.

[0038] The steel tie rod 1 is a round rod, and the ratio of its length to its diameter is 160~250.

[0039] Since the steel tie rods directly constrain the steel panels on both sides, the tension system can provide a certain tension during the concrete pouring construction, and can also effectively transmit the tension between the steel panels on both sides under the external impact load; and the setting of the steel sleeve can effectively isolate the constraint of the concrete on the steel tie rod, and because of the polytetrafluoroethylene material, the friction between the steel sleeve and the steel tie rod is reduced, so that the steel tie rod is easy to be unstable and bent under axial pressure, so the steel tie rod can effectively release the pressure between the steel panels on both sides. Therefore, the present invention can completely transmit the tension between the steel panels on both sides of the steel plate concrete composite wall, and effectively release the pressure between the steel panels on both sides, thereby greatly reducing the damage to the steel panels by external impact loads, and is an effective supplement to the general tension system currently used in the steel plate concrete composite wall of nuclear power plants.

[0040] The tensioning system binds the steel panels on both sides into a whole, and then pours concrete inside to form a steel plate concrete composite wall that is tensile-resistant and does not transmit pressure.

[0041] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0042] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tension-resistant and pressure-non-transmitting tie system for a steel plate-concrete composite wall, characterized in that, it includes: Steel tie rods (1), the steel tie rods (1) are arranged in rows and columns inside the concrete (100), and both ends thereof are fixedly penetrated in two relatively arranged steel panels (200); Steel sleeves (2), there are multiple steel sleeves (2), and they are respectively sleeved on the corresponding steel tie rods (1), and polytetrafluoroethylene material (3) is filled between the steel sleeves (2) and the steel tie rods (1); The length of the steel sleeve (2) is less than the distance between the two steel panels (200); The steel tie rod (1) is a slender rod that is easy to be bent by force, so as to facilitate the steel tie rod (1) to release the pressure between the two steel panels (200) on both sides; Both ends of the steel tie rod (1) and the two steel panels (200) are fixedly connected by fasteners (4); The fastener (4) includes: A fastening nut (41), the fastening nut (41) is screwed on the end of the steel tie rod (1); A gasket (42), the gasket (42) is pressed and arranged between the steel panel (200) and the fastening nut (41).

2. The tension-resistant and pressure-non-transmitting tie system for a steel plate-concrete composite wall according to claim 1, characterized in that, One end of the steel sleeve (2) is fixedly connected to the inner wall of the corresponding steel panel (200).

3. The tension-resistant and pressure-non-transmitting tie system for a steel plate-concrete composite wall according to claim 2, characterized in that, One end of the steel sleeve (2) is fixedly welded to the inner wall of the corresponding steel panel (200).

4. The tension-resistant and pressure-non-transmitting tie system for a steel plate-concrete composite wall according to claim 1, characterized in that, The difference between the distance between the two steel panels (200) and the length of the steel sleeve (2) is 5 cm.

5. The tension-resistant and pressure-non-transmitting tie system for a steel plate-concrete composite wall according to claim 1, characterized in that, The steel tie rod (1) is a round rod, and the ratio of its length to its diameter is 160 - 250.

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