Force transfer isolation connecting structure of air-supported membrane structure and box-type house combined system

Abstract

The invention discloses a force transmission isolation connecting structure of an air-supported membrane structure and a box-type house combined system, and belongs to the technical field of civil engineering. The device is characterized by comprising a three-stage modular force transmission assembly, and the three-stage modular force transmission assembly comprises a membrane boundary anchoring module composed of upper angle steel and lower square steel tubes through high-strength bolts; the steel cable force transmission module is located in the box-type house unit stand column and composed of a steel cable fixing ring, a steel cable fixing hook, a prestress steel strand and a tensioning adjusting component; and the ground anchor module is embedded in the ground and is connected with the steel cable module through an embedded part. The membrane boundary anchoring module and the steel cable force transmission module are directly connected with the ground anchor module to form a force transmission path of the upward pulling force directly guided to the foundation, so that the box-type house can be prevented from being directly stressed; a steel cable pretension continuous adjustable mechanism adapts to the fluctuation of the internal pressure of the film; and by combining quick inflation of the membrane structure and modular assembly of the box-type house, efficient construction on site is achieved, and an anti-pulling solution is provided for a temporary venue.

Description

Technical Field

[0001] The present invention belongs to the technical fields of civil engineering and emergency engineering, and specifically relates to a force-transmitting isolation connection structure of an air-supported membrane structure and a container-type house combination system. The invention is particularly suitable for providing an anti-pullout solution for dealing with severe weather conditions in rapidly deployed emergency rescue scenarios. Background Art

[0002] As a new solution for emergency buildings, the combined system of air-supported membrane structure and container-type houses has the advantages of rapid deployment and large space coverage, but its design defects in force transmission paths and insufficient adaptability to extreme climates seriously restrict its reliability.

[0003] The existing combination system has the following technical problems: (1) The traditional structure directly anchors the membrane boundary to the top frame of the box-type house, resulting in the box-type house bearing all the upward pull forces generated by wind loads and membrane internal pressure. The strength of its thin-walled steel frame is seriously insufficient, and the connection nodes at the upper end of the frame are subjected to greater stress.

[0004] (2) The membrane structure is only connected to the upper end of the foundation (box-type unit), and only the frame beams around the box-type house are subjected to force. The pull-out force needs to be transmitted to the foundation through the frame columns of the box-type house. The force transmission path is long, which wastes materials and is unsafe.

[0005] (3) Unlike traditional structures, membrane structures are subject to internal pressure fluctuations during the operation and maintenance phase and are sensitive to wind loads.

[0006] (4) Concrete counterweights need to be cast and cured on site, which delays the emergency response time.

[0007] (5) The adhesive sealing boundary becomes brittle and fails in a low-temperature environment, and is unable to transmit mechanical anchoring force, resulting in the deterioration of airtightness and the coexistence of structural safety hazards.

[0008] To address the above problems, it is urgent to break through the three technical barriers of "physical isolation of tension", "dynamic adaptation of load" and "rapid assembly compatibility" to build a high-reliability force transmission connection structure. Summary of the Invention

[0009] The purpose of the present invention is to solve the problems existing in the above-mentioned technology, such as the thin-walled frame of the box-type house is weak in tension, the force transmission path is long resulting in material waste, the membrane internal pressure fluctuation and wind load sensitivity, the emergency response delay of foundation construction, the contradiction between sealing failure and insufficient anchoring force, and proposes a force transmission isolation connection structure of the combined system of air-supported membrane structure and box-type house.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a force-transmitting, isolating connection structure for an air-supported membrane structure and a container-type house combination system, characterized by comprising three modular force-transmitting components. The membrane boundary anchoring module consists of an upper angle steel and a lower square steel tube, clamped together via high-strength bolts to form an airtight mechanical anchor at the membrane boundary. The lower square steel tube is bolted to the corner fittings at the top of the container-type house, deflecting upward pull forces away from the container-type house columns. The cable force-transmitting module, located within the container-type house columns, comprises a cable fixing ring, prestressed steel strands, a cable fixing hook, and a tensioning adjustment component. The upper end of the cable fixing ring is directly connected to the lower surface of the upper square steel tube, and the lower end is directly connected to the ground anchor, forming a vertical force-transmitting path. The tensioning adjustment component dynamically maintains the cable pretension in response to fluctuations in membrane internal pressure and external loads. The ground anchor module utilizes a precast concrete slab with embedded "L-shaped" pullout anchors and cable fixing rings to direct upward pull forces to the foundation.

[0011] Preferably, in the above-mentioned force-transmitting isolation connection structure of the air-supported membrane structure and the container-type house combination system, the air-supported membrane structure adopts high-strength PVC coated fabric, and its boundary membrane is pressed between the membrane boundary foundation composed of angle steel and square steel pipe.

[0012] Based on the above technical features, the membrane boundary foundation realizes the uniform diffusion of the membrane structure boundary stress and effectively fixes the membrane structure.

[0013] Preferably, in the above-mentioned force-transmitting isolation connection structure of the combined system of an air-supported membrane structure and a container-type house, the membrane structure foundation is composed of an upper angle steel, high-strength bolts and a lower square steel pipe, wherein the lower square steel pipe is mechanically connected to the prestressed steel strand through a steel cable fixing ring.

[0014] Based on the above technical features, the upward pulling force is transmitted vertically through "angle steel → steel cable → ground anchor", and the box-type house frame is subjected to zero tension.

[0015] Based on the above technical features, a mechanical connection design is adopted at the lower channel steel through a steel cable fixing ring and a steel cable fixing hook to avoid the risk of low-temperature brittle failure of the welding node and the effect of concentrated force at the weld connection.

[0016] Preferably, in the above-mentioned force-transmitting isolation connection structure of the combined system of an air-supported membrane structure and a box-type house, the tensioning adjustment component is a two-way spiral buckle with an adjustment stroke of ≥150mm, adapted to ±25% membrane internal pressure fluctuations.

[0017] Based on the above technical features, the spiral buckle fine-tunes the tension of the steel cable to suppress the amplitude of wind-induced vibration, respond in real time to the fluctuation of membrane internal pressure and the changes of internal force of the structure under external load, realize the adaptive and intelligent adjustment of the structural foundation counterweight, and better adapt to extreme weather.

[0018] Preferably, in the above-mentioned force-transmitting isolation connection structure of the combined system of air-supported membrane structure and box-type house, a hollow silicone sealing strip is preset on the clamping surface of the upper angle steel and the lower square steel tube, and the sealing strip deforms under 0.8MPa compressive stress to fill the boundary gap of the membrane.

[0019] Based on the above technical features, the hardness attenuation rate of the hollow silicone sealing strip is reduced in a low-temperature environment, and a continuous airtight boundary is formed after being deformed under pressure.

[0020] Preferably, in the above-mentioned force-transmitting isolation connection structure of the combined system of an air-supported membrane structure and a container-type house, the precast concrete slabs are pre-embedded with steel cable fixing rings and anti-pullout anchor rods in the factory, and after being hoisted into place on site, they are mechanically connected to the steel cable fixing hooks through the steel cable fixing rings.

[0021] Based on the above technical features, the precast concrete slabs and the steel cable fixing rings are mechanically connected through steel cable fixing hooks to avoid on-site concrete pouring and maintenance, ensuring that the emergency building can be put into use within the golden rescue window period.

[0022] Preferably, in the above-mentioned force-transmitting isolation connection structure of the combined system of an air-supported membrane structure and a box-type house, the buried depth of the pull-out anchor rod is greater than the thickness of the precast concrete slab, and the length of the horizontal section is greater than 1.5 times the buried depth.

[0023] Based on the above technical features, the horizontal end bearing of the "L"-shaped pull-out anchor activates the resistance of the deep soil to meet the pull-out requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the overall force-transmitting and isolating connection structure of the combined system of the air-supported membrane structure and the box-type house of the present invention.

[0025] Figure 2 This is a three-dimensional diagram of the membrane boundary anchoring module of the present invention.

[0026] Figure 3 This is a cross-sectional view of the membrane boundary anchoring module of the present invention.

[0027] Figure 4 It is a connection diagram of the force transmission system of the present invention.

[0028] Figure 5 Schematic diagram of the connection between the membrane boundary anchoring module and the steel cable force transmission module of the present invention.

[0029] Figure 6 This is a schematic diagram of the ground anchor module of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "horizontal", "vertical", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Please refer to Figure 1-4 This embodiment provides a force transmission isolation connection structure of an air-supported membrane structure and a box-type house combination system, comprising a three-level modular force transmission component: a membrane boundary anchoring module (01), a steel cable force transmission module (02), and a ground anchor module (03).

[0033] The membrane boundary anchoring module (01) includes a membrane boundary (011), an upper L-shaped angle steel (012) and a lower square steel tube (013) arranged in parallel, and a vertical high-strength bolt (014); the membrane boundary anchoring module (01) has an upper L-shaped angle steel (012) and a lower square steel tube (013) connected by a vertical high-strength bolt (014), and the membrane boundary (011) is clamped between the horizontal flange of the L-shaped angle steel (012) and the lower square steel tube (013). A hollow silicone sealing strip is pre-embedded in the clamping surface between the horizontal flange of the L-shaped angle steel (012) and the upper surface of the square steel tube to form a mechanical seal. The angle steel has a group of bolt holes reserved therein, which are directly connected to the steel cable fixing ring (021). The membrane boundary anchoring module (01) is connected to the steel cable force transmission module (02) via a steel cable fixing hook (022).

[0034] The membrane boundary of the air-supported membrane structure is laid on the sealing strip and fastened in stages with a fixed torque using high-strength bolts (013). After fastening, the compression deformation of the sealing strip reaches 35%, forming a continuous airtight boundary.

[0035] The cable force transmission module (02) comprises two sets of cable fixing rings (021) symmetrically installed inside the box-type housing columns. The upper ends of the cable fixing rings (021) are vertically connected to the square steel tube (013) via high-strength bolts, and the lower ends are directly connected to the ground anchor (03), thereby achieving vertical force transmission. The fixing rings (021) are provided with a slot for embedding the inverted fixing hook (022). The prestressed steel strand (023) has hot-pressed anchor heads at both ends, which are connected to the fixing hook (022) via a pin. A tension adjustment component (024) is connected in series in the middle of the steel strand, with an adjustment stroke of 150 mm and a thread lead of 8 mm.

[0036] In the ground anchor module (03), the precast concrete slab (032) is pre-buried with an "L"-shaped anti-pullout anchor rod (031) in the factory, and a pressure-bearing plate is welded to the end.

[0037] In terms of construction, after the concrete slab is hoisted into place on site, it is connected to the steel cable fixing hook (022) through the pre-buried steel cable fixing ring (021). After the concrete slab (032) is fixed and installed, the pre-tensioning of the steel strand is applied in stages.

[0038] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A force-transmitting isolation connection structure of an air-supported membrane structure and a container-type house combination system, characterized in that: include: A membrane boundary anchoring module (01), a steel cable force transmission module (02) and a ground anchor module (03); the membrane boundary anchoring module (01) comprises a membrane boundary (011), an upper L-shaped angle steel (012) arranged in parallel, a lower square steel tube (013) and a vertical high-strength bolt (014); the steel cable force transmission module (02) is arranged inside the column of the box-type room unit, and comprises a group of symmetrically arranged steel cable fixing rings (021), a fixing hook (022) arranged at the end of the steel strand, and a fixing hook (023) connecting each The prestressed steel strand (023) and the tensioning adjustment component (024) of the fixing ring; the ground anchor module (03) is composed of a precast concrete slab (032) with pre-buried steel strand fixing hooks (022) and pull-out anchor rods (031) at the upper and lower parts respectively; the force transmission isolation connection structure of the air-supported membrane structure and the box-type house combination system constitutes a three-level force transmission path of "membrane base-steel cable-ground anchor", and the pull-out force of the membrane structure is directly transmitted to the ground anchor module through the prestressed steel strand (023), thereby physically isolating the box-type house structure from the force.

2. The system according to claim 1, characterized in that: The membrane boundary anchoring module (01) The upper L-shaped angle steel (012) and the lower square steel tube (013) are connected by means of vertical high-strength bolts (014), and the membrane boundary (011) is clamped between the horizontal flange of the L-shaped angle steel (012) and the lower square steel tube (013); the membrane boundary anchoring module (01) is connected to the steel cable force transmission module (02) through a steel cable fixing hook (022).

3. The force-transmitting isolation connection structure according to claim 1, characterized in that: A continuous elastic sealing strip is provided on the clamping contact surface between the upper angle steel (012) and the lower square steel tube (013). The cross section of the sealing strip is a hollow silicone tube, which forms an airtight boundary after being deformed under pressure.

4. The system according to claim 1, characterized in that: The prestressed steel strand (023) in the steel cable force transmission module (02) is connected to the steel cable fixing ring (021) via a steel cable fixing hook (022), and the prestress can be adjusted by the end of the tension adjustment component (024) to adapt to the change of the upward pulling force caused by the internal pressure or external load; the steel cable force transmission module (02) is connected to the ground anchor module via the lower steel cable fixing hook (022).

5. The force-transmitting isolation connection structure according to claim 1, characterized in that: The adjustment stroke of the tension adjustment component (024) of the prestressed steel strand (023) adjusts the pretension of the prestressed steel strand (023) in real time through thread engagement and other means, and adapts to the fluctuation range of the pull-out force of the air-supported membrane structure.

6. The force-transmitting isolation connection structure according to claim 1, characterized in that: The precast concrete slab (032) in the ground anchor module (03) is prefabricated in a factory, buried in the ground, and connected to the prestressed steel strand (023) via a steel cable fixing ring (022).

7. The force-transmitting isolation connection structure according to claim 1, characterized in that: The anti-pullout anchor rod (031) is buried in an "L" shape.

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