Box-type UHPC (Ultra High Performance Concrete) mixed structure compression piece, combined compression piece and clustered compression piece
By designing box-type UHPC hybrid structure compressed parts, using their high durability, tensile strength and compressive strength, the problem of insufficient application of UHPC in temporary projects is solved, efficient and low-cost application of pressure-bearing components is achieved, and a variety of UHPC application scenarios are promoted.
Patent Information
- Application Number
- CN202421648747.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-12
AI Technical Summary
There is a lack of cases in the prior art where ultra-high performance concrete (UHPC) is made into a box structure for pressure-bearing components, resulting in a narrow application range, and the traditional cast-in-place concrete structure in temporary projects is costly and inefficient.
A box-type UHPC hybrid structure pressure-bearing member is designed, including a hollow polygon UHPC box, a V-shaped steel plate that wraps the side edges of the box, a female and male end connection, as well as an internal steel mesh and PBL connection key, to achieve the reinforcement and connection of the box through these components.
Through prefabricated box-type UHPC hybrid structure pressure-bearing parts, the high cost and low efficiency of pressure-bearing components in traditional temporary projects are solved, providing higher bearing capacity, short production cycle and material savings, reducing construction costs, improving construction efficiency, and all components and accessories can be recycled and utilized, improving economic benefits.
Smart Images
Figure CN222835226U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and particularly relates to a box-type UHPC hybrid structure pressure-bearing member, a combined pressure-bearing member and a clustered pressure-bearing member. Background Art
[0002] UHPC is an ultra-high performance concrete. Compared with ordinary high-strength concrete, UHPC has higher durability, higher tensile strength and extremely high ultimate compressive strength. Using less UHPC can achieve the functions of large-volume concrete structures, and the structure is relatively light. However, UHPC is expensive. If it is made into rotatable prefabricated components, the cost can be reduced. Rotatable components can greatly improve construction efficiency and achieve green and efficient construction.
[0003] At present, UHPC is mostly used in landscape, decoration projects and repairing concrete structure defects in engineering, and its scope of use is relatively narrow. There is currently no case of making UHPC into a box-type structure for pressure-bearing components. If UHPC is made into a turnover box-type structure for temporary projects, it can replace the traditional cast-in-place concrete structure, and has the advantages of high bearing capacity, short production cycle, and material saving. It can reduce construction costs, improve construction efficiency, and save energy and protect the environment. In order to further promote the application of UHPC ultra-high performance concrete, a box-type UHPC hybrid structure pressure member is now provided. Utility Model Content
[0004] The utility model aims to provide a box-type UHPC hybrid structure pressure-bearing member.
[0005] The utility model is achieved through the following measures:
[0006] In a first aspect, an embodiment of the utility model provides a box-type UHPC hybrid structure pressure-bearing member, characterized in that it comprises a hollow UHPC box body with a polygonal cross-section shape, and a V-shaped steel plate wrapping each side edge of the UHPC box body;
[0007] One end of the UHPC box is provided with a female end connector, and the other end is provided with a male end connector.
[0008] Furthermore, the outer surface of the V-shaped steel plate is preferably flush with the outer surface of the UHPC box.
[0009] Furthermore, both side plates of the V-shaped steel plate are welded with a plurality of reinforcements, and the inner ends of the reinforcements are inserted into the interior of the UHPC box.
[0010] Furthermore, the reinforcement members are generally shear nails.
[0011] Furthermore, the size of the V-shaped steel plate is 7.5 cm×7.5 cm×5 mm; the spacing between adjacent shear nails is generally 15 cm, and the shear nails on both sides of the same V-shaped steel plate are staggered up and down.
[0012] Furthermore, the polygon is generally a rectangle, and the V-shaped steel plate is a right-angle steel plate.
[0013] Furthermore, the female end connecting piece is a mortise and tenon, and the male end connecting piece is a tenon.
[0014] Furthermore, the hollow structure of the UHPC box is a polygonal opening that is arranged through the length direction. The side edges of the opening are all provided with chamfers, and the size is generally 5 cm×5 cm.
[0015] Furthermore, a plurality of steel mesh sheets are cast inside the UHPC box. The steel mesh sheets are generally parallel to the inner wall of the UHPC box, and the steel mesh sheets are generally made of HPB300A6.
[0016] Furthermore, the mortise and tenon are fixed to the end of the UHPC box through a connecting steel plate, a plurality of PBL connecting keys are welded to the inner end of the connecting steel plate, and the inner end of the PBL connecting key is inserted into the UHPC box.
[0017] Furthermore, the PBL connecting key includes a flat iron perpendicular to the connecting steel plate, and a plurality of connecting ribs are arranged on the flat iron, and the connecting ribs are perpendicular to the flat iron. The depth of the flat iron inserted into the UHPC box is generally not less than 8 cm, and the length of the connecting ribs is generally stable according to actual conditions, and is generally not less than 5 cm.
[0018] Furthermore, both the female-end connector and the male-end connector are provided with connection reserved holes, and the female-end connector and the male-end connector can be connected by means of bolts or pins passing through the connection reserved holes.
[0019] Furthermore, a plurality of end reserved holes are provided at both ends of the UHPC box.
[0020] Furthermore, it also includes a longitudinal connecting piece inserted into the reserved hole of the end.
[0021] In a second aspect, a combined pressure-bearing member is provided, comprising a plurality of the box-type UHPC hybrid structure pressure-bearing members described above;
[0022] The longitudinal connection of two adjacent box-type UHPC hybrid structure pressure parts with tightly attached side walls is achieved by bolt connection; the transverse connection of two adjacent box-type UHPC hybrid structure pressure parts is achieved by plugging a female end connector and a male end connector.
[0023] In a third aspect, a cluster-type pressure member is provided, comprising a plurality of the box-type UHPC hybrid structure pressure members distributed in a matrix; comprising a horizontal support connecting two adjacent box-type UHPC hybrid structure pressure members, wherein both ends of the horizontal support are fixed to the box-type UHPC hybrid structure pressure members by welding or bolting; and also comprising an oblique brace connecting two diagonal box-type UHPC hybrid structure pressure members, wherein both ends of the oblique brace are fixed to the box-type UHPC hybrid structure pressure members by welding or bolting.
[0024] The beneficial effects of the technical solution provided by the embodiment of the utility model are as follows: the present invention provides a box-type UHPC hybrid structure pressure-bearing member, which fully utilizes its higher durability, higher tensile strength and extremely high ultimate compressive strength, and uses less UHPC to achieve the functions of a large-volume concrete structure; the prefabricated box-type UHPC hybrid structure pressure-bearing member solves the problem that the pressure-bearing members in traditional temporary projects are mostly cast-in-place concrete structures, and are all one-time investments, resulting in high project costs. At the same time, different connection methods are proposed according to different application scenarios on site and whether there are unlimited sites, and pressure-bearing members with different usage requirements are provided; all components and accessories involved in the utility model can be recycled repeatedly, and the multiple recycling of components effectively improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solution of the present utility model, a brief introduction will be given to the drawings used in the embodiments below. Obviously, the drawings listed below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 This is a structural schematic diagram of a box-type UHPC hybrid structure pressure-bearing member in an embodiment of the utility model;
[0027] Figure 2 This is a schematic diagram of the internal structure of a box-type UHPC hybrid structure pressure-bearing member in an embodiment of the utility model;
[0028] Figure 3 yes Figure 2 A partial enlarged view of the middle A;
[0029] Figure 4 It is a structural diagram of the UHPC box;
[0030] Figure 5 It is a schematic diagram of the cross-section structure of the UHPC box and the steel mesh structure;
[0031] Figure 6 It is a schematic diagram of the structure of the female end connector and the male end connector;
[0032] Figure 7 It is a schematic diagram of the structure of UHPC boxes connected side by side;
[0033] Figure 8 A schematic diagram of the structure of a cluster-type pressure-bearing member Figure 1 ;
[0034] Fig. 9 A schematic diagram of the structure of a cluster-type pressure-bearing member Figure 2 .
[0035] In the attached drawings, the components represented by each reference numeral are listed as follows: 1. UHPC box; 2. Female end connector; 3. Male end connector; 4. Angle steel; 5. Shear nail; 6. Steel mesh; 7. Chamfer; 8. Connecting steel plate one; 9. PBL connecting key; 10. Tenon; 11. Tenon groove; 12. Connection reserved hole; 13. End reserved hole; 14. Tension bolt; 15. Connecting steel plate two; 16. Channel steel; 17. Connecting steel plate three. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0037] Embodiment 1:
[0038] See also Figure 1-Figure 9 , the embodiment of the utility model provides a box-type UHPC hybrid structure pressure-bearing member, characterized in that it includes a UHPC box body 1 which is hollow and has a polygonal cross-sectional shape, and a V-shaped steel plate wrapping each side edge of the UHPC box body 1;
[0039] A female connector 2 is disposed at one end of the UHPC housing 1 , and a male connector 3 is disposed at the other end.
[0040] The outer surface of the V-shaped steel plate is preferably flush with the outer surface of the UHPC box 1 .
[0041] Both side plates of the V-shaped steel plate are welded with a plurality of reinforcements, and the inner ends of the reinforcements are inserted into the UHPC box 1 .
[0042] Shear studs 5 are generally used as reinforcements.
[0043] The size of the V-shaped steel plate is 7.5 cm×7.5 cm×5 mm; the spacing between adjacent shear nails 5 is generally 15 cm, and the shear nails 5 on both sides of the same V-shaped steel plate are staggered up and down.
[0044] The polygon is generally a rectangle, and the V-shaped steel plate is an angle steel 4, which can enhance the compressive strength of the UHPC box 1;
[0045] The female end connecting piece 2 is a mortise 11 , and the male end connecting piece 3 is a tenon 10 .
[0046] The hollow structure of the UHPC box 1 is a polygonal opening that is arranged through the length direction. The side edges of the opening are all provided with chamfers 7, and the size is generally 5 cm×5 cm.
[0047] A plurality of steel mesh sheets 6 are cast inside the UHPC box 1 to prevent cracking of the UHPC box 1 and enhance its compressive strength and shear strength. The steel mesh sheets 6 are generally parallel to the inner wall of the UHPC box 1, and the steel mesh sheets 6 are generally made of HPB300A6.
[0048] The cross-sectional size of the UHPC box 1 can be selected as 80cm×80cm. After being connected with the connecting steel plates 88 on both sides, it can be made into structures of common sizes such as 9m, 10m, 11m, 12m, etc.
[0049] The mortise groove 11 and the tenon 10 are fixed to the end of the UHPC box 1 through the connecting steel plate 8, and a plurality of PBL connecting keys 9 are welded to the inner end of the connecting steel plate 8, and the inner end of the PBL connecting key 9 is inserted into the UHPC box 1. The cross-sectional size of the connecting steel plate 8 is consistent with that of the UHPC box 1, and the PBL connecting key 9 on one side of the UHPC box 1 is connected to the tenon 10 or the mortise groove 11 of the mortise and tenon structure, which serves as a transition between the concrete structure and the steel structure.
[0050] The PBL connecting key 9 includes a flat iron perpendicular to the connecting steel plate, on which a number of connecting ribs are arranged, the connecting ribs are perpendicular to the flat iron, the depth of the flat iron inserted into the UHPC box 1 is generally not less than 8 cm, and the length of the connecting ribs is generally stable according to actual conditions, and is generally not less than 5 cm.
[0051] A connection reserved hole 12 is provided on both the female end connector 2 and the male end connector 3 , and the female end connector 2 and the male end connector 3 can be connected by means of bolts or pins passing through the connection reserved holes 12 .
[0052] The connecting steel plate 8 and the end of the UHPC box 1 are provided with an end reserved hole 13 with a diameter of 20 cm, which can be inserted with a steel pipe of the same diameter for quick positioning of the longitudinal connection of the UHPC box 1, and the steel pipe is removed after positioning.
[0053] Embodiment 2:
[0054] See also Figure 1-Figure 9 , In this embodiment, a combined pressure-bearing member is provided, including a plurality of box-type UHPC hybrid structure pressure-bearing members;
[0055] The longitudinal connection of the box-type UHPC hybrid structure pressure members with two adjacent side walls tightly attached is connected by bolts; the transverse connection of the two adjacent box-type UHPC hybrid structure pressure members is achieved by plugging the female end connector 2 and the male end connector 3. The side walls of the female end connector 2 and the male end connector 3 can be connected by tension bolts 14. In addition, the tension bolts 14 are used for the longitudinal connection and side-by-side connection of the UHPC box 1 structure to prevent displacement.
[0056] Embodiment three:
[0057] See also Figure 1-Figure 9 In this embodiment, a cluster-type pressure member is provided, including a plurality of box-type UHPC hybrid structure pressure members distributed in a matrix; including a horizontal support connecting two adjacent box-type UHPC hybrid structure pressure members, and both ends of the horizontal support are fixed to the box-type UHPC hybrid structure pressure members by welding or bolting; and also including an oblique brace connecting two diagonal box-type UHPC hybrid structure pressure members, and both ends of the oblique brace are fixed to the box-type UHPC hybrid structure pressure members by welding or bolting.
[0058] Both ends of the horizontal support and the diagonal support are provided with a connecting steel plate two 15 and a connecting steel plate three 17 welded with the mortise and tenon structure. The horizontal support and the diagonal support can adopt channel steel 16.
[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A box-type UHPC hybrid structure pressure-bearing part, characterized in that: It includes a hollow UHPC box with a polygonal cross-section, and a V-shaped steel plate wrapping each side edge of the UHPC box; One end of the UHPC box is provided with a female end connector, and the other end is provided with a male end connector; The female end connection piece is a mortise and tenon, and the male end connection piece is a tenon; The mortise and tenon are fixed to the end of the UHPC box through a connecting steel plate, a plurality of PBL connecting keys are welded to the inner end of the connecting steel plate, and the inner end of the PBL connecting key is inserted into the UHPC box.
2. According to claim 1, the box-type UHPC hybrid structure pressure-bearing member is characterized in that: Both side plates of the V-shaped steel plate are welded with a plurality of reinforcements, and the inner ends of the reinforcements are inserted into the interior of the UHPC box.
3. According to claim 1, the box-type UHPC hybrid structure pressure-bearing member is characterized in that: The UHPC box is provided with a polygonal opening along the length direction.
4. The box-type UHPC hybrid structure pressure-bearing member according to claim 3 is characterized in that: A plurality of steel mesh sheets are cast inside the UHPC box.
5. The box-type UHPC hybrid structure pressure-bearing member according to claim 1, characterized in that: The female end connector and the male end connector are both provided with connection reserved holes.
6. The box-type UHPC hybrid structure pressure-bearing member according to claim 1, characterized in that: The connecting steel plate and the UHPC box end are provided with end reserved holes.
7. A combined pressure-bearing member, characterized in that: A box-type UHPC hybrid structure pressure-bearing member comprising any one of claims 1 to 6; The longitudinal connection of the box-type UHPC hybrid structure pressure parts with two adjacent side walls close to each other is connected by bolts; The lateral connection of two adjacent box-type UHPC hybrid structure pressure parts is achieved by plugging the female end connector and the male end connector.
8. A cluster type pressure bearing member, characterized in that: A box-type UHPC hybrid structure pressure-bearing member comprising a plurality of box-type UHPC hybrid structure pressure-bearing members according to any one of claims 1 to 6 distributed in a matrix; It includes a horizontal support connecting two adjacent box-type UHPC hybrid structure pressure members, and both ends of the horizontal support are fixed to the box-type UHPC hybrid structure pressure members by welding or bolting; It also includes an oblique brace connecting two diagonal box-type UHPC hybrid structure pressure-bearing parts, and both ends of the oblique brace are fixed to the box-type UHPC hybrid structure pressure-bearing parts by welding or bolt connection.