Bidirectional prestressed steel straw wall or floor system

Abstract

The present invention discloses a bidirectional prestressed steel straw wall panel or floor panel system, which belongs to the technical field of steel structure building components. After multiple layers of straw building components are stacked up and down in sequence, prestressed transverse reinforcements are added vertically to connect the layers of straw building components in series, and after adding transverse prestress to each prestressed transverse reinforcement, the multiple layers of straw building components are squeezed together to form a wall panel. The present invention fully utilizes the strong compressive performance of the straw sawdust compactor, combines it with the tensile performance and fixing effect of the bilaterally symmetrical C-shaped steel, and combines the compressive capacity of the straw sawdust compactor with the tensile performance of the bilaterally symmetrical C-shaped steel after applying moderate prestress to the prestressed longitudinal reinforcement, so that the building component has sufficient traction prestress, thereby significantly improving the supporting performance of the building component.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure building components, and in particular relates to a bidirectional prestressed steel structure straw wall panel or floor panel system. Background Art

[0002] Cold-formed thin-walled steel structural systems are gaining increasing attention due to their light weight, excellent seismic performance, diverse connection options, adaptability to complex architectural shapes, minimal or no wet processing, suitability for factory-optimized design and modular production, short construction periods, flexible layouts, minimal construction waste, reusable components, and near-zero environmental pollution. They are now a preferred option for both low-rise and mid-rise buildings. Currently, the development and application of new high-strength cold-formed steel, especially thin-walled cold-formed steel, have gained some popularity. However, my country's deep processing of cold-formed thin-walled steel components is insufficient, and widespread component-based and modular production is yet to be achieved. The country is accustomed to adopting foreign forming technologies, resulting in few structural systems with independent intellectual property rights and a lack of independent brands. With the rapid development of new rural construction in recent years, the demand for new housing structures has continued to grow, gradually changing traditional concepts. Steel-structured housing has also gradually become popular in rural areas. However, the existing steel-structured housing systems are relatively bulky, with long construction periods and high costs, hindering their widespread application. Especially in recent years, with the improvement of environmental protection standards for engineering environments, many traditional steel structure building components combined with concrete have gradually decreased. After the traditional steel structure components are built as a skeleton, concrete is usually poured into the components, and the spaces between the skeletons are filled with blocks or concrete to form walls or floor decking. This type of filling material has a large weight, low thermal insulation performance, and requires on-site pouring and construction. It also has a long solidification time, low efficiency, and a poor construction environment, which needs to be improved. In addition, due to environmental factors, achieving fast construction speed and high efficiency has also become one of the new construction requirements. By processing and assembling cold-bent thin-walled steel into standard parts within the project, the advantage of fast construction can be achieved on-site, which can significantly reduce the overall construction cost.

[0003] On December 30, 2016, inventor Wei Qun and others proposed a patent application for a "steel-wood type steel straw structure system" with publication number CN106759905A. This patent application document is intended to solve the problem of rapid installation in the above patent, in which a structure is formed by fixing a channel-shaped steel and a compressed core wrapped with straw by rivets and connecting them through connecting holes. However, according to the inventors' practical experience, it was found that the combined building components of the channel-shaped steel and the compressed core wrapped with straw used in the patent document still have the problem of insufficient bearing strength when used as beams or columns. In particular, the combined building components cannot be directly applied to a large-span beam component system, and it is necessary to add column design or auxiliary component design according to its bearing strength. Therefore, in actual application, the patent document should not be used in large-scale composite structure systems, and its scope of application and promotion value are greatly limited.

[0004] Straw and sawdust compacts are already a well-established, publicly known product. During their preparation, they are made by adding adhesives, hydrophobic agents, flame retardants, and preservatives, and then pressing them under high-tonnage pressure. They exhibit excellent integrity, moisture resistance, flame retardancy, grip strength, thermal insulation, and corrosion resistance. Comparing their compressive strength alone, straw compacts have comparable compressive strength to existing concrete casts. However, in practical applications, straw compacts have low tensile strength and poor shear resistance, making them unsuitable for use in large-span structural components. While the aforementioned patent document utilizes channel steel and a wrapped straw compression core (similar to straw and sawdust compacts), leveraging the tensile strength of the channel steel to some extent to improve the overall strength of the structural component, the channel steel and the straw compression core described in the patent document are not tightly coupled to transmit shared resistance along the entire rod and coordinate deformation. In other words, there is no direct binding relationship between the two other than rivets. Therefore, when used in columns, this building component cannot withstand external loads of sufficient strength. Tests have shown that when pressure increases, the channel steel will expand to the sides, losing its grip on the compressed straw core. This causes localized fractures in the stress-concentrated area in the center of the compressed straw core. Further increases in external load can lead to collapse of the entire column. Testing also showed that when this building component is used as a beam system, small spans show no noticeable discomfort. However, when a solid load is applied to large spans (over 3 meters), the entire structure will experience overall bending. Further increases in load will cause the channel steel to bend in the localized stress-concentrated areas, leading to localized fractures in the compressed straw core. The aforementioned patent document technology initially increased the complexity of the channel steel edges, such as by adding special-shaped structures to the edges and securing them with a central cross brace. However, relying solely on the addition of special-shaped edges to the channel steel to increase the overall strength of the building component has proven to be impractical. Therefore, the inventors have further improved the technology based on the above technical solution to effectively combine cold-bent thin-walled steel structures with straw and sawdust compactors for application in building systems. Summary of the Invention

[0005] In view of the problems that traditional building components relying on the combination of steel structure and concrete have low on-site casting efficiency and poor construction environment, and often fail to meet environmental protection standards, and the problem that the application scope is still limited due to strength difference in the existing process of combining cold-bent thin-walled steel structure with straw compression core, the present invention provides a bidirectional prestressed steel structure straw wall panel or floor system, which fully utilizes the strong compressive performance of the straw sawdust compaction body, combines the tensile performance and fixing effect of the bilaterally symmetrical C-shaped steel, and combines the compressive capacity of the straw sawdust compaction body with the tensile performance of the bilaterally symmetrical C-shaped steel after applying appropriate prestress to the prestressed longitudinal reinforcement, so that the building component has sufficient traction prestress, thereby significantly improving the supporting performance of the building component, and significantly improving the shear strength compared with the existing large-span steel beams with only filling.

[0006] The solution adopted by the present invention to solve its technical problems is: a bidirectional prestressed steel straw wall panel or floor system, which is composed of multiple layers of straw building components stacked up and down in sequence, and then prestressed transverse reinforcement is added vertically to connect the straw building components of each layer with the prestressed transverse reinforcement, and after adding transverse prestress to each prestressed transverse reinforcement, the multiple layers of straw building components are squeezed together to form a wall panel; at least the uppermost and lowermost building components of each layer of straw building components include a C-shaped steel 1 and a C-shaped steel 2 that are buckled and a straw sawdust compaction body that is matched and set inside the C-shaped steel 1 and the C-shaped steel 2, and a columnar inner cavity formed by the buckled C-shaped steel 1 and the C-shaped steel 2, and a columnar straw sawdust compaction body that is matched and set in the inner cavity, and the two side edges of the C-shaped steel 1 and the C-shaped steel 2 are fixed together with the straw sawdust compaction body by steel rivets to form an assembly The combination comprises an end transverse node at both ends of the combination, or an outer end plate at both ends of the combination; longitudinal through holes are provided in the length direction of the straw sawdust compacting body, and transverse through holes are provided in the width direction; the prestressed longitudinal reinforcement is passed through the longitudinal through holes of the straw sawdust compacting body, and then respectively passed through the end transverse node or the corresponding end plate through holes on the outer end plate; the two ends of the prestressed longitudinal reinforcement are respectively fixed by prestressed locking nuts, and each prestressed locking nut is adjusted so that each prestressed longitudinal reinforcement has prestress; the prestressed transverse reinforcement is passed through the transverse through holes of the straw sawdust compacting body, and then respectively passed through the corresponding steel through holes on the side surfaces of C-shaped steel one and C-shaped steel two of each layer of straw building components; the two ends of the prestressed transverse reinforcement are respectively fixed by prestressed locking nuts, and each prestressed locking nut is adjusted so that each prestressed transverse reinforcement has prestress.

[0007] Furthermore, steel perforations are provided on both sides of each layer of straw building components. After short-distance prestressed transverse reinforcements are added vertically along each layer of straw building components, both ends of the short-distance prestressed transverse reinforcements are fixed by prestressed locking nuts respectively. The prestressed locking nuts are adjusted so that each short-distance prestressed transverse reinforcement has prestressed tension.

[0008] The end transverse node includes a connection square sleeve and an outer end plate, wherein the outer end plate is fixed to the outside of the connection square sleeve, the connection square sleeve is mounted on the inner side of the ends of C-section steel 1 and C-section steel 2, the outer end plate is located on the outer side of the ends of C-section steel 1 and C-section steel 2, and the outer end plate is in contact with the end surfaces of C-section steel 1 and C-section steel 2. The outer end plate is provided with end plate through-holes for inserting the prestressed longitudinal reinforcement. Furthermore, the end transverse node includes a connection square sleeve, an inner pad, and an outer end plate, wherein the inner pad is fixed to the inside of the connection square sleeve, and the outer end plate is fixed to the outside of the connection square sleeve. The inner pad and outer end plates are respectively provided with end plate through-holes in corresponding positions for inserting the prestressed longitudinal reinforcement.

[0009] Furthermore, the side walls of the connecting square sleeve are evenly distributed with sleeve plate connection holes and node rivet holes. The steel rivet holes on the side walls of C-section steel 1 and C-section steel 2 correspond to the node rivet holes on the connecting square sleeve and are fixed together by node rivets. Corresponding sleeve plate connection holes are provided on the two opposite side walls of the connecting square sleeve for installing node fixing bolts through and fixed with node lock nuts for connecting the transverse members. Alternatively, the node fixing bolts can be prestressed by adjusting the node lock nuts.

[0010] Furthermore, node flange plates are provided on both sides or four side walls of the outer end plate. The node flange plates are provided with end plate through-holes and are fixed by node fixing bolts and node lock nuts for connecting vertical members. Alternatively, prestressing is applied to the node fixing bolts by adjusting the node lock nuts.

[0011] In addition, when applying prestress to each reinforcement, one method adopted is to provide an end nut groove with a diameter larger than the reinforcement hole at one end of the reinforcement hole for fitting the prestressed longitudinal reinforcement or prestressed transverse reinforcement in the straw sawdust compactor, and to match it with a connecting nut. The connecting nut is fitted with the reinforcement threaded section at the end of the prestressed longitudinal reinforcement or prestressed transverse reinforcement, and at the same time, a prestressed tension bolt is threadedly connected to the rear side of the connecting nut. The prestressed tension bolt is also fitted into the end plate through-hole of the outer end plate, and its cap end is located outside the end plate through-hole.

[0012] The beneficial effects of the present invention are as follows: the present invention fully utilizes the strong compressive resistance of the straw sawdust compactor, combines the tensile resistance and fixing effect of the bilaterally symmetrical C-shaped steel, and applies appropriate prestress to the prestressed longitudinal reinforcement, thereby combining the compressive resistance of the straw sawdust compactor with the tensile resistance of the bilaterally symmetrical C-shaped steel, so that the building component has sufficient traction prestress, thereby significantly improving the supporting performance of the building component. In particular, when the building component is applied to a beam system, compared with existing only-filled wall panels or floor panels, the system has very high tensile, compressive and bending bearing properties, as well as good thermal insulation performance. This system becomes the most preferred mode for passive houses.

[0013] The present invention also adds prestressed transverse reinforcement to the straw wallboard system, which is used to compress the symmetrical C-shaped steel and straw sawdust compaction body in the transverse direction and provide prestress, so as to resist the longitudinal prestress in the longitudinal direction, thereby combining the longitudinal prestress with the transverse prestress to improve the strength of the building components.

[0014] The straw wall panel system of the present invention can not only be used as a wall panel system alone, but also can be used in a floor decking system. The longitudinal prestressed reinforcement at its ends can pass through the ends to connect to the corresponding vertically connected building components. The transverse prestressed reinforcement in the middle can not only improve the strength and transverse prestress of each building component itself, but also connect the adjacent layers of building components into one and apply transverse prestress at the same time. The prestressed connection relationship of each building component is realized by combining the longitudinal prestress and the transverse prestress.

[0015] The present invention is a preferred form of passive houses. In addition to compact straw bricks, it can also be used for straw particles mixed with adhesives, gypsum powder, cement powder, and geopolymers to support fillers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the three-dimensional structural diagrams of the wall panel system of the present invention.

[0017] Figure 2 This is the second schematic diagram of the three-dimensional structure of the wall panel system of the present invention.

[0018] Figure 3 yes Figure 1 Schematic diagram of the front structure.

[0019] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0020] Figure 5 yes Figure 3 One of the enlarged structural diagrams of part B in the middle.

[0021] Figure 6 yes Figure 3 The second enlarged structural diagram of part B in the middle.

[0022] Figure 7 yes Figure 3 Schematic diagram of the enlarged cross-section of section C in the middle.

[0023] In the figure, number 2a is a crossbeam straw building component, 201 is C-steel one, 202 is C-steel two, 203 is a straw sawdust compactor, 206 is a steel through-hole, 207 is a node fixing hole, 208 is a steel rivet hole, 3a is an end transverse node, 303 is an outer end plate, 304 is an end plate through-hole, 4 is a prestressed longitudinal tie bar, 401 is a tie bar threaded section, 402 is a tie bar hole, 403 is an end nut groove, 5 is a prestressed transverse tie bar, 801 is a connecting nut, 802 is a prestressed pull bolt, 803 is a fixing cap, and 804 is a prestressed lock nut. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Example 1: A bidirectional prestressed steel straw wallboard or floor system, such as Figure 1 、 Figure 2 and Figure 3 As shown, Figure 1 It is a solid wall panel system. Figure 2 This integral wall panel system, including doors and windows, is constructed from stacked layers of straw building components. Prestressed transverse ties are added vertically, connecting each layer of the straw building components. The locations of the prestressed bolts and connecting structural components are determined based on the BIM structural diagram, along with the corresponding end fasteners.

[0026] Among them, each layer of straw building components such as Figure 7As shown, the straw building components at the top and bottom are formed by interlocking C-shaped steel 1 201 and C-shaped steel 202 to form a columnar inner cavity, and a columnar straw sawdust compactor 203 is matched and set in the square column, cylindrical column, or hexagonal column inner cavity. The straw sawdust compactor used in this embodiment refers to a straw compactor, a sawdust compactor, or a straw and sawdust mixed compactor, which has a low thermal conductivity coefficient. Thermal conductivity refers to the amount of heat transferred through an area of ​​1 square meter in 1 hour under stable heat transfer conditions when the temperature difference between the two surfaces of a 1m thick material is 1 degree (K, ℃). The unit is watt / meter degree (W / (m·K)). Thermal conductivity is one of the most important thermal and hygrometric parameters of building materials. It is closely related to building energy consumption, indoor environment and many other thermal and hygrometric processes. Thermal conductivity is related to factors such as the composition structure, density, moisture content and temperature of the material. Materials with low thermal conductivity are usually defined as thermal insulation materials. For example, the thermal conductivity of ordinary clay bricks is 0.7-0.8w / (m·K), the transverse thermal conductivity of wood is 0.14w / (m·K), the longitudinal thermal conductivity of wood is 0.38w / (m·K), the thermal conductivity of steel is 36-54w / (m·K), and the thermal conductivity of air is 0.023 w / (m·K), the thermal conductivity of straw is lower than that of wood. After testing, the thermal conductivity of the compacted straw sawdust is slightly higher than that of wood but significantly lower than that of ordinary clay bricks. It is a very good insulation material and a good material for passive houses.

[0027] like Figure 1 The two sides of the C-shaped steel 1 201 and C-shaped steel 2 202 on both sides of the straw compacting body are not butted together, and there is a gap between them. At the same time, the two side edges of the C-shaped steel 1 201 and C-shaped steel 2 202 are fixed together with the straw sawdust compacting body 203 by steel rivets to form a combined body. Figure 7 In the embodiment, end transverse nodes 3a are also provided at both ends of the assembly. The straw and sawdust compactor 203 is provided with longitudinal through-holes along its length and transverse through-holes along its width. Simultaneously, prestressed longitudinal reinforcement bars 4 are inserted through the longitudinal through-holes of the straw and sawdust compactor 203 along its length. The ends of the prestressed longitudinal reinforcement bars 4 are inserted through corresponding end plate through-holes 304 on the end transverse nodes 3a. The ends of the prestressed longitudinal reinforcement bars 4 are secured with prestressed locking nuts 8. Each prestressed locking nut 8 is adjusted to ensure that each prestressed longitudinal reinforcement bar 4 is prestressed.

[0028] First, the prestressed longitudinal ties 4 added to each layer of straw-based building components in this embodiment provide prestressed tension, ensuring that each layer of straw-based building components possesses sufficient prestressed tension along its length. This creates a repulsive force with the C-shaped steel and straw-sawdust compactor 203 on both sides. This creates a reaction force between the tension of the prestressed longitudinal ties 4 and the C-shaped steel and straw-sawdust compactor 203 on both sides. In effect, the tension of the prestressed longitudinal ties 4 is applied primarily to the straw-sawdust compactor 203 through the end transverse nodes 3a at both ends, and secondarily to the C-shaped steel. Consequently, the load-bearing performance of this building component relies not solely on the tensile strength of the C-shaped steel, but rather on the tensile strength of the combined stresses. However, in terms of the tensile strength of the building component, the prestressed longitudinal ties 4 provide strong tensile resistance due to the pre-stressed tension. The longitudinal prestressing eliminates any potential for deformation of the building component and the straw-sawdust compactor 203 within it before deformation.

[0029] Based on the above, transverse prestressing is added to each prestressed transverse tie bar, allowing the multi-layered straw building components to be squeezed together to form a wall panel. The prestressed transverse tie bars are inserted through the transverse holes of each layer of straw sawdust compactor and then through the corresponding steel perforations on the side surfaces of the C-steel 1 and C-steel 2 of each layer of straw building component. The ends of the prestressed transverse tie bars are secured with prestressed lock nuts. Adjusting the prestressed lock nuts ensures that each prestressed transverse tie bar is prestressed. The addition of prestressed transverse tie bars 5 not only allows the C-steel on both sides of each layer of straw building component to be connected by pressure to the central straw sawdust compactor 203, but also ensures that the straw sawdust compactor 203 itself possesses a transverse prestressed tension to counteract the prestressed longitudinal tie bars 4. This transverse prestress can overcome the expansion of the straw sawdust compactor 203, thereby preventing deformation of the straw sawdust compactor 203 (the transverse prestressing eliminates this deformation before deformation). This improves shear resistance.

[0030] Furthermore, the prestressed compression and wrapping of the straw and sawdust compactor 203 by the C-shaped steel bars on both sides ensures a uniform stress state within the straw and sawdust compactor 203, preventing damage due to localized stress concentration, which could ultimately lead to collapse of the entire building component. This improves shear resistance. The transverse prestress applied to the C-shaped steel bars on both sides of the building component can be varied in distribution depending on the load distribution. For example, transverse prestress is typically applied to the middle of the building component to improve shear resistance in that region.

[0031] like Figure 7In the figure, the end transverse node 3a includes a connection sleeve and an outer end plate 303. The outer end plate 303 is fixed to the outside of the connection sleeve. The connection sleeve is mounted on the inner sides of both ends of C-shaped steel 1 201 and C-shaped steel 2 202. The outer end plate 303 is located on the outer sides of both ends of C-shaped steel 1 201 and C-shaped steel 2 202, and the outer end plate 303 is abutted against the end surfaces of C-shaped steel 1 201 and C-shaped steel 2 202. The outer end plate 303 is provided with end plate through-holes 304 for inserting the prestressed longitudinal reinforcement 4. Furthermore, sleeve plate connection holes and node rivet holes are evenly distributed on the side walls of the connection sleeve. The steel rivet holes 208 on the side walls of C-shaped steel 1 201 and C-shaped steel 2 202 correspond to the node rivet holes on the connection sleeve and are fixed together by node rivets. Corresponding sleeve plate connection holes are provided on the opposite side walls of the connection sleeve for inserting node fixing bolts, which are fixed by node lock nuts to connect the transverse members. Prestress can be further applied to the node fixing bolts by adjusting the node lock nut.

[0032] Example 2: Based on Example 1, steel perforations are further provided on both sides of each layer of straw building components. After short-distance prestressed transverse reinforcements are added vertically along each layer of straw building components, the two ends of the short-distance prestressed transverse reinforcements are respectively fixed by prestressed locking nuts. The prestressed locking nuts are adjusted so that each short-distance prestressed transverse reinforcement has prestressed tension.

[0033] Example 3: Based on Example 1, Figure 7 In the embodiment, node flange plates are further provided on both sides or four side walls of the outer end plate 303. The node flange plates are provided with end plate through-holes 304, which are fixed by node fixing bolts and node lock nuts for connecting vertical components.

[0034] Example 4: Based on Example 1, Figure 7 Furthermore, the end transverse node 3a includes a connection square sleeve, an inner pad and an outer end plate 303, wherein the inner pad is fixed on the inner side of the connection square sleeve, the connection square sleeve is mounted on the inner sides of both ends of C-shaped steel 1 201 and C-shaped steel 2 202, the outer end plate 303 is located on the outer sides of both ends of C-shaped steel 1 201 and C-shaped steel 2 202, and the outer end plate 303 is connected to the end faces of C-shaped steel 1 201 and C-shaped steel 2 202, and corresponding end plate through-holes 304 are respectively provided on the inner pad and the outer end plate 303 for passing through and installing the prestressed longitudinal reinforcement 4.

[0035] Example 5: Based on Example 4, Figure 7Furthermore, the side walls of the connecting square sleeve are evenly distributed with sleeve plate connection holes and node rivet holes. The steel rivet holes 208 provided on the side walls of C-section steel 1 201 and C-section steel 2 202 correspond to the node rivet holes on the connecting square sleeve and are secured together by node rivets. Corresponding sleeve plate connection holes are provided on the two opposing side walls of the connecting square sleeve for installing node fixing bolts, which are secured by node lock nuts to connect the transverse members. The node fixing bolts can also be prestressed by adjusting the node lock nuts.

[0036] Example 6: Based on Example 1, outer end plates 303 are installed at both ends of the assembly, and the prestressed longitudinal reinforcement 4 is passed through the longitudinal through-holes of the straw sawdust compactor 203 along the length direction. The ends of the prestressed longitudinal reinforcement 4 are respectively passed through the corresponding end plate through-holes 304 on the outer end plates 303. The two ends of the prestressed longitudinal reinforcement 4 are respectively fixed by prestressed lock nuts 8. Each prestressed lock nut 8 is adjusted to make each prestressed longitudinal reinforcement 4 have prestress.

[0037] Example 7: Based on Example 1, an extended prestressed tensioning structure is used, such as Figure 4-Figure 6 As shown, specifically, one end of the reinforcement hole for fitting the prestressed longitudinal reinforcement or prestressed transverse reinforcement in the straw sawdust compactor is provided with an end nut groove with a diameter larger than the reinforcement hole and a matching connecting nut. The connecting nut is fitted with the reinforcement threaded section at the end of the prestressed longitudinal reinforcement or prestressed transverse reinforcement, and a prestressed tension bolt is threadedly connected to the rear side of the connecting nut. The prestressed tension bolt is also fitted into the end plate through-hole of the outer end plate, and its cap end is located outside the end plate through-hole.

[0038] In this embodiment, after the prestressed longitudinal reinforcement 4 or prestressed transverse reinforcement 5 is matched and passed through the reinforcement hole of the straw sawdust compactor 203, one end of the prestressed longitudinal reinforcement 4 or prestressed transverse reinforcement 5 is fixedly connected via a fixing cap 803 or a prestressed lock nut 804, and the other end is connected via a connecting nut 801 located in the end nut groove 403. At this time, no prestress is applied. Then, the prestressed longitudinal reinforcement 4 or prestressed transverse reinforcement 5 is fixedly connected via a prestressed bolt 802 and the connecting nut 801. Prestress is applied only when the prestressed bolt 802 is further rotated. At this time, the prestressed bolt 802 pulls the connecting nut 801 and then the prestressed longitudinal reinforcement 4 or prestressed transverse reinforcement 5, generating prestress.

[0039] This embodiment provides an extended prestressed tensioning structure, which not only enables the steel structure straw wall panel or floor system to have prestress independently, but also ensures that prestress is generated between the wall panel or floor system and any docking components such as beams or columns. That is, the prestressed tension bolts 802 are extended outside any docking components to achieve a prestressed connection relationship between the wall panel or floor system and any docking components such as beams or columns.

[0040] Example 8: Based on the above examples, the edge of the C-shaped steel can also include a straight flange, and the straight flange is embedded in a corresponding groove on the side of the straw sawdust compactor. The straw sawdust compactor can also be used to mix straw particles with adhesives, gypsum powder, cement powder, or geopolymers to form a filler.

Claims

1. A bidirectional prestressed steel straw wallboard or floor system, characterized in that: After the multi-layer straw building components are stacked up and down in sequence, prestressed transverse reinforcement is added vertically through the components to connect the components of each layer with the prestressed transverse reinforcement, and the transverse prestress is added to each prestressed transverse reinforcement to squeeze the multi-layer straw building components together to form a wall panel; the straw building components of each layer or at least the uppermost and lowermost components include a C-shaped steel 1 and a C-shaped steel 2 that are buckled and a straw sawdust compacting body that is matched and set on the inner side thereof, and the two side edges of the C-shaped steel 1 and the C-shaped steel 2 are fixed together with the straw sawdust compacting body by steel rivets to form a combination, and the two ends of the combination are equipped with end transverse nodes, or the two ends of the gold-clad silver combination are equipped with outer end plates; the straw sawdust compacting body is provided with longitudinal through holes along the length direction, and the width direction is provided with a plurality of through holes. Transverse through holes are provided in the degree direction. After the prestressed longitudinal reinforcement passes through the longitudinal through holes of the straw sawdust compactor, it passes through the corresponding end plate through holes on the end transverse node or the outer end plate respectively. The two ends of the prestressed longitudinal reinforcement are fixed by prestressed lock nuts respectively. The prestressed lock nuts are adjusted to make each prestressed longitudinal reinforcement have prestress; after the prestressed transverse reinforcement passes through the transverse through holes of the straw sawdust compactor, it passes through the corresponding steel through holes on the side surfaces of the C-steel 1 and C-steel 2 of each layer of straw building components respectively. The two ends of the prestressed transverse reinforcement are fixed by prestressed lock nuts respectively. The prestressed lock nuts are adjusted to make each prestressed transverse reinforcement have prestress. Steel through holes are provided on both sides of each layer of straw building components, and the short-distance prestress is increased vertically along each layer of straw building components. After the transverse reinforcement is stretched, the two ends of the short-distance prestressed transverse reinforcement are fixed by prestressed lock nuts respectively. The prestressed lock nuts are adjusted to make the short-distance prestressed transverse reinforcement have prestressed tension. The end transverse node includes a connection square sleeve, an inner pad and an outer end plate, wherein the outer end plate is fixed to the outside of the connection square sleeve, the inner pad is fixed to the inside of the connection square sleeve, the connection square sleeve is mounted on the inner sides of the two ends of C-shaped steel one and C-shaped steel two, the outer end plate is located on the outside of the two ends of C-shaped steel one and C-shaped steel two, and the outer end plate is connected to the end faces of C-shaped steel one and C-shaped steel two, and end plate through-holes corresponding to the positions are respectively provided on the inner pad and the outer end plate for penetrating and installing the prestressed longitudinal reinforcement; sleeve plate connection holes and node rivet holes are evenly distributed on the side wall of the connection square sleeve, and the sides of C-shaped steel one and C-shaped steel two are provided with sleeve plate connection holes. The steel rivet holes set in the wall correspond to the node rivet holes on the connecting square sleeve and are fixed together by node rivets; corresponding sleeve plate connecting holes are set on the two opposite side walls of the connecting square sleeve for passing through the installation of node fixing bolts and fixed by node lock nuts for connecting transverse members; at one end of the reinforcement hole for sleeve prestressed longitudinal reinforcement or prestressed transverse reinforcement in the straw sawdust compactor, an end nut groove with a diameter larger than the reinforcement hole is provided and a matching inner conical connecting nut is provided, and the inner conical connecting nut is sleeved with the reinforcement threaded section at the end of the prestressed longitudinal reinforcement or prestressed transverse reinforcement, and at the same time, a prestressed pull bolt is threadedly connected to the rear side of the inner conical connecting nut, and the prestressed pull bolt is also sleeved in the end plate through-hole of the outer end plate, and its cap end is located outside the end plate through-hole.

2. The bidirectional prestressed steel straw wallboard or floor system according to claim 1, characterized in that: Node flange plates are provided on both sides or four side walls of the outer end plate. The node flange plates are provided with end plate through-holes and are fixed with node fixing bolts and node lock nuts for connecting vertical components.

3. The bidirectional prestressed steel straw wallboard or floor system according to claim 1, characterized in that: Prestress is applied to the node fixing bolts by adjusting the node lock nut.

4. The bidirectional prestressed steel straw wallboard or floor system according to claim 2, characterized in that: Prestress is applied to the node fixing bolts by adjusting the node lock nut.

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