CN111608266A - Steel tenon key for improving shear strength of prefabricated beam segment assembly and assembly method - Google Patents
Steel tenon key for improving shear strength of prefabricated beam segment assembly and assembly method Download PDFInfo
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- CN111608266A CN111608266A CN202010442809.5A CN202010442809A CN111608266A CN 111608266 A CN111608266 A CN 111608266A CN 202010442809 A CN202010442809 A CN 202010442809A CN 111608266 A CN111608266 A CN 111608266A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/22—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material with parts being prestressed
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Abstract
The invention discloses a steel tenon key for improving the splicing shear strength of precast beam segments and a splicing method, wherein the steel tenon key comprises a tenon component and a mortise component which are matched, and the tenon component and the mortise component are respectively arranged at the opposite end parts of a first segment and a second segment; the tenon assembly comprises a first embedded section embedded in the first section and a tenon protruding out of the end face of the first section; the tenon hole assembly comprises a second embedded section embedded in the second section and a tenon hole formed in the end part of the second embedded section; at least two axial ends of the first embedded section and the second embedded section are of cuboid structures. The invention discloses a steel tenon key and an assembling method for improving the assembling shear strength of a precast beam segment.
Description
Technical Field
The invention relates to a shear key for splicing precast beam segments, in particular to a steel tenon key for improving the splicing shear strength of the precast beam segments and a splicing method.
Background
Currently, in precast beam segment erection, two forms are generally adopted to improve shear strength: firstly, opposite segment end surfaces are spliced by adopting a toothed concrete structure, wherein the form of the toothed concrete structure comprises a rectangle, a trapezoid, a triangle and the like, a joint of the toothed structure can play a role in shearing resistance, the strength of the joint is improved, but a tooth key joint needs to be prefabricated by adopting a close-fitting pouring method, a complex tooth key model needs to be installed, the process is complex, and meanwhile, the positioning precision of a concrete tooth key is low; secondly, the tenon key is pre-embedded in the beam end bearing area, the cross section of the existing tenon key is of a circular structure, under the condition that the beam end is stressed, the acting force of the tenon key on concrete generates component forces in the vertical direction and the horizontal direction, the component forces in the horizontal direction generate horizontal tensile stress on the concrete bearing area below the tenon key, and the tensile strength of the concrete axis is about 1/10 of the compressive strength of the axis, so that the beam end concrete is easily damaged, and the problem of concentrated contact stress exists between the cylindrical tenon key and the concrete.
Disclosure of Invention
Aiming at the problems, the invention provides a steel tenon key for improving the splicing shear strength of precast beam segments and a splicing method, aiming at solving the problems that the concrete structure is easy to damage when the concrete of the precast beam segments bears horizontal acting force, the shear strength of the segment splicing shear key is low, the stress concentration area between the tenon key and the concrete is large, the preparation process is complicated and the like.
The invention adopts the following technical scheme to realize the purpose:
a steel tenon key for improving the assembling shear strength of a precast beam segment, wherein the precast beam at least comprises a first segment and a second segment; the steel tenon key comprises a tenon component and a mortise component which are matched, and the tenon component and the mortise component are respectively arranged at the opposite ends of the first section and the second section; the tenon assembly comprises a first embedded section embedded in the first section and a tenon protruding out of the end face of the first section, and the first embedded section and the tenon are coaxial and are integrally formed; the mortise assembly comprises a second embedded section embedded in the second section and a mortise arranged at the end part of the second embedded section, the mortise is coaxial with the second embedded section and is inserted into the tenon, and the tenon is in clearance fit with the mortise; at least two axial ends of the first embedded section and the second embedded section are of cuboid structures.
According to the technical scheme, at least two axial ends of the first embedded section and the second embedded section are made into cuboid structures, the bearing capacity of the first section and the bearing capacity of the second section are transmitted to concrete through the side faces of the cuboid in the vertical direction, the concrete only bears the pressure in the vertical direction, the beam end concrete structure is not prone to damage, the bearing capacity is transmitted through a plane, the stress concentration area between the steel tenon key and the concrete is small, and the shearing strength is high; in the cylindrical tenon key in the prior art, the bearing force of the first section and the second section is transmitted to the concrete through the cylindrical side surface, the force of the tenon key acting on the concrete is decomposed into component forces in the vertical direction and the horizontal direction by the cylindrical side surface, the component force in the horizontal direction generates horizontal tensile stress on a concrete bearing area below the tenon key, and the tensile strength of the concrete axle center is about 1/10 of the compressive strength of the axle center, so that the concrete structure at the beam end is easily damaged by the cylindrical tenon key due to the action of the horizontal component force, the stress concentration area between the tenon key and the concrete is large, and the shear strength is low.
The further technical scheme is that the whole of the first embedded section and the second embedded section are both of cuboid structures.
The further technical scheme is that the first embedded section and the second embedded section are respectively provided with an anchoring structure between two axial ends. The anchoring structure of the technical scheme is used for improving the anchoring force between the steel tenon key and the concrete.
The further technical scheme is that the two axial ends of the first embedded section and the second embedded section are of cuboid structures; the anchoring structure is a cylindrical structure with the top surface and the bottom surface respectively connected with the end faces of the cuboids at the two ends, and the outer diameter of the cylindrical structure is smaller than that of the cuboids at the two ends. This technical scheme forms the anchor structure through the cuboid and the cylinder of different external diameters, improves the anchor power between steel tenon key and the concrete.
The further technical scheme is that the anchoring structure is an anchoring rib protruding out of the peripheries of the first embedded section and the second embedded section. This technical scheme improves the anchoring power between steel tenon key and the concrete through the peripheral installation anchor rib at first pre-buried section and second pre-buried section.
The further technical scheme is that the anchoring rib is in one of a semicircular or polygonal structure.
The further technical proposal is that the seam of the first segment and the second segment is a flat seam. In the technical scheme, the flat joint with the steel tenon key is adopted to replace a tooth key joint in the prior art, so that the design of the section beam end can be simplified, the close-fitting pouring of the conventional section assembling joint is cancelled, and the prefabrication process is simplified.
The assembling method of the precast beam segments comprises the steel tenon key and comprises the following steps:
A) installing a template, installing prefabricated section templates, wherein two ends of the template are of flat joint structures, reserving prestressed ducts at preset positions, and binding reinforcing mesh;
B) embedding a steel tenon key, embedding a matched tenon component and a matched tenon hole component in the opposite end parts of the first section and the second section respectively, and pouring concrete; the number, size and arrangement positions of the steel tenon keys are determined according to the shear design to be borne by the splicing joints of the segmental beams;
C) assembling and positioning, namely controlling the relative positions of the first section and the second section through a hoisting device to enable the tenon and the mortise to be coaxial;
D) splicing connection, namely connecting a first section and a second section through a tenon and a tenon hole, wherein the tenon is inserted into the tenon hole and is in clearance fit with the tenon hole;
E) and (4) tensioning construction, namely penetrating the prestressed tendons in the reserved prestressed duct, installing gaskets and anchors at two ends and tensioning the prestressed tendons.
The connecting method in the technical scheme adopts the flat joint with the steel tenon key to replace the tooth key joint in the prior art, can simplify the design of the segment beam end, cancels the close-fitting pouring of the prior segment assembling joint and simplifies the prefabricating process.
The invention has the beneficial effects that:
the invention provides a steel tenon key and an assembling method for improving the assembling shear strength of precast beam segments, wherein at least two axial ends of a first embedded segment and a second embedded segment are made into cuboid structures, the bearing capacity of the first segment and the second segment is transmitted to concrete through the side surface of the cuboid in the vertical direction, the concrete only bears the pressure in the vertical direction, a beam end concrete structure is not easy to damage, the bearing capacity is transmitted through a plane, the stress concentration area between the steel tenon key and the concrete is small, and the shear strength is high; the flat joint with the steel tenon key is adopted to replace a tooth key joint in the prior art, so that the design of the section beam end can be simplified, the close-fitting pouring of the conventional section assembling joint is omitted, and the prefabrication process is simplified.
Drawings
FIG. 1 is a diagram: the precast beam structure schematic diagram of the prior art adopting the cylindrical tenon key.
FIG. 2 is a diagram of: the cylindrical tenon key structure in the prior art is schematically shown.
FIG. 3 is a diagram of: in the prior art, a schematic diagram of analyzing the stress of concrete at the beam end of a cylindrical tenon key is adopted.
FIG. 4 is a diagram of: the invention discloses a structural schematic diagram of a precast beam adopting a steel tenon key with two cuboid ends.
FIG. 5 is a diagram: the invention discloses a structural schematic diagram of a steel tenon key with two cuboid ends.
FIG. 6 is a diagram of: the invention discloses a schematic diagram of a steel tenon key splicing structure with two cuboid ends.
FIG. 7 is a diagram of: the invention adopts a schematic diagram of analyzing the stress of the concrete at the beam end of the steel tenon key with two cuboid ends.
FIG. 8 is a diagram of: the invention discloses a structural schematic diagram of a precast beam adopting a steel tenon key integrally in a cuboid.
FIG. 9 is a diagram of: the invention relates to a structural schematic diagram of a steel tenon key integrally in a cuboid shape.
FIG. 10 is a diagram: the invention relates to a schematic diagram of a steel tenon key insertion structure integrally in a cuboid shape.
FIG. 11 is a diagram of: the invention adopts a structural schematic diagram of a precast beam which is integrally cuboid and is not provided with an anchoring structure steel tenon key.
FIG. 12 is a diagram: the invention relates to a structural schematic diagram of a steel tenon key which is integrally a cuboid and does not have an anchoring structure.
In the figure:
1. a first segment; 2. a second segment; 10. a tenon component; 100. a first pre-buried section; 11. a tenon; 12. a first end of a first embedded section; 13. a second end of the first embedded section; 14. the first embedded section cylindrical anchoring structure; 15. a first pre-buried section anchoring rib; 20. a mortise assembly; 200. a second pre-buried section; 21. mortising holes; 22. a first end of a second embedded section; 23. a second end of the second embedded section; 24. a second embedded section cylindrical anchoring structure; 25. anchoring ribs of a second embedded section; 3. and (3) concrete.
Detailed Description
The present invention will be described in detail below with reference to fig. 1 to 12, a comparative example and a specific embodiment, and features in the following examples and examples may be combined with each other without conflict.
Comparative example, as shown in fig. 1 to 3, there is provided a steel dowel for assembling precast beam segments of the prior art, the precast beam comprising a first segment 1 and a second segment 2 assembled by a flush joint, the steel dowel comprising a tenon assembly 10 and a mortise assembly 20, the tenon assembly 10 and the mortise assembly 20 being installed at opposite ends of the first segment 1 and the second segment 2, respectively; the tenon assembly 10 comprises a first embedded section 100 embedded in the first section 1 and a tenon 11 protruding out of the end face of the first section 1, and the first embedded section 100 and the tenon 11 are coaxial and are integrally formed; the mortise assembly 20 comprises a second embedded section 200 embedded in the second section 2 and a mortise 21 arranged at the end of the second embedded section 200, the mortise 21 is coaxial with the second embedded section 200 and is inserted into the tenon 11, and the tenon 11 is in clearance fit with the mortise 21; a first embedded section first end 12 and a first embedded section second end 13 along the axial direction of the first embedded section 100 are both cylindrical structures, and a second embedded section first end 22 and a second embedded section second end 23 along the axial direction of the second embedded section 200 are both cylindrical structures; the first embedded section first end 12 and the first embedded section second end 13 are connected through a first embedded section cylindrical anchoring structure 14, and the outer diameter of the first embedded section cylindrical anchoring structure 14 is smaller than the outer diameters of the first embedded section first end 12 and the first embedded section second end 13; the first end 22 of the second embedded section is connected with the second end 23 of the second embedded section through a second embedded section cylindrical anchoring structure 24, and the outer diameter of the second embedded section cylindrical anchoring structure 24 is smaller than the outer diameters of the first end 22 of the second embedded section and the second end 23 of the second embedded section;
in this comparative example, as shown in figure 3, the tenon-and-mortise joint will act through the cylindrical structure when the first segment 1 and the second segment 2 undergo relative shear movementThe force Fq is transmitted to the concrete 3, Fq3For vertical downward force, Fq1And Fq2Acting in an oblique direction, e.g. Fq1Can be decomposed into horizontal acting force F1And a vertical force F2Horizontal direction force F1Horizontal tensile stress is generated on the bearing area of the concrete 3 below the tenon key, and the axial tensile strength of the concrete 3 is about 1/10 of the axial compressive strength, so that the horizontal acting force F acted on the concrete 3 by the cylindrical tenon key in the comparative example1Can result in damage to the beam end concrete structure.
In another embodiment, as shown in fig. 4 to 7, the present embodiment provides a steel key for improving the shear strength of a prefabricated beam segment assembly, the prefabricated beam comprising a first segment 1 and a second segment 2 assembled by a flush joint, the steel key comprising a tenon assembly 10 and a mortise assembly 20, the tenon assembly 10 and the mortise assembly 20 being respectively mounted at opposite ends of the first segment 1 and the second segment 2; the tenon assembly 10 comprises a first embedded section 100 embedded in the first section 1 and a tenon 11 protruding out of the end face of the first section 1, and the first embedded section 100 and the tenon 11 are coaxial and are integrally formed; the mortise assembly 20 comprises a second embedded section 200 embedded in the second section 2 and a mortise 21 arranged at the end of the second embedded section 200, the mortise 21 is coaxial with the second embedded section 200 and is inserted into the tenon 11, and the tenon 11 is in clearance fit with the mortise 21; a first embedded section first end 12 and a first embedded section second end 13 along the axial direction of the first embedded section 100 are both of cuboid structures, and a second embedded section first end 22 and a second embedded section second end 23 along the axial direction of the second embedded section 200 are both of cuboid structures; the first embedded section first end 12 and the first embedded section second end 13 are connected through a first embedded section cylindrical anchoring structure 14, and the outer diameter of the first embedded section cylindrical anchoring structure 14 is smaller than the outer diameters of the first embedded section first end 12 and the first embedded section second end 13, so that the anchoring force of the first embedded section 100 and the concrete 3 is improved; the first end 22 of the second embedded section is connected with the second end 23 of the second embedded section through a second embedded section cylindrical anchoring structure 24, and the outer diameter of the second embedded section cylindrical anchoring structure 24 is smaller than the outer diameters of the first end 22 of the second embedded section and the second end 23 of the second embedded section, so that the anchoring force of the second embedded section 200 and the concrete 3 is improved;
in the present embodiment, as shown in fig. 7, when the first segment 1 and the second segment 2 generate relative shearing motion, the steel tenon key transmits acting force Fq of the first segment 1 and the second segment 2 to the concrete 3 through the side surfaces of the rectangular structures at the two ends of the first embedded segment 100 and the second embedded segment 200 in the vertical direction, and Fq are both vertical downward acting forces; compared with a curved surface structure in the prior art, the planar structure in the embodiment can reduce stress concentration between the steel tenon key and concrete and improve the shear strength; in addition, the splicing structure with the flat joints can simplify the process design of the tooth joint section beam ends in the prior art, can cancel the close-fitting pouring of the conventional section splicing joints, and simplifies the prefabrication process.
The above embodiments exemplarily show that the first segment 1 and the second segment 2 are assembled by a flat seam, and according to other embodiments or practical applications, the first segment 1 and the second segment 2 can also be assembled by a dense-tooth or sparse-tooth structure.
The embodiment exemplarily shows that the precast beam assembly structure comprises a first section 1 and a second section 2, the first section 1 is embedded with a tenon assembly 10 relative to the end surface of the second section 2, the second section 2 is embedded with a mortise assembly 20 relative to the end surface of the first section 1, in other embodiments or practical applications, the precast beam further comprises a third section assembled with the other end of the first section 1, and a fourth section assembled with the other end of the second section 2, the end surfaces of the first section 1 and the third section are respectively embedded with the tenon assembly 10 and the mortise assembly 20, and the end surfaces of the second section 2 and the fourth section are respectively embedded with the tenon assembly 10 and the mortise assembly 20; or the opposite end surfaces of the first section 1 and the third section are respectively embedded with the tenon hole component 20 and the tenon component 10, and the opposite end surfaces of the second section 2 and the fourth section are respectively embedded with the tenon hole component 20 and the tenon component 10; that is, both ends of the first segment 1 may be the tenon component 10 or one end may be the tenon component 10 and the other end may be the mortise component 20, and both ends of the second segment 2 may be the mortise component 20 or one end may be the tenon component 10 and the other end may be the mortise component 20.
The above embodiment exemplarily shows that the two ends of the first embedded section 100 and the second embedded section 200 are cuboids, and are connected through a cylindrical anchoring structure with an outer diameter smaller than the cuboids at the two ends; according to other embodiments or practical applications, the first embedded section 100, the second embedded section 200 and the anchoring structure in other shapes may be used instead, for example, fig. 8 to 10, on the basis of the above embodiments, the first embedded section 100 and the second embedded section 200 are both in a rectangular parallelepiped structure, wherein four axial sides of the first embedded section 100 are provided with protruding first embedded section anchoring ribs 15, four axial sides of the second embedded section 200 are provided with protruding second embedded section anchoring ribs 25, the first embedded section anchoring ribs 15 and the second embedded section anchoring ribs 25 may be connected in a manner of welding, integral molding, or the like, and the specific shape may be in a shape of a semicircle, a polygon, or the like, and the connection manner and the specific shape of the anchoring ribs may be determined according to specific construction conditions, which is not limited herein; the steel tenon key in the embodiment transmits the acting force Fq of the first section 1 and the second section 2 to the concrete 3 through the side surface of the cuboid structure in the vertical direction, and the Fq is the vertical downward acting force; compared with a curved surface structure in the prior art, the planar structure in the embodiment can reduce stress concentration of the section beam end.
The above embodiment exemplarily shows that the first embedded section 100 and the second embedded section 200 are respectively provided with an anchoring structure (a cylindrical anchoring structure and an anchoring rib) only for improving the anchoring force between the embedded sections and the concrete, as shown in fig. 11 and 12, and in other embodiments where the anchoring force is sufficient, the anchoring structure is an unnecessary technical feature.
In another embodiment, on the basis of the above embodiment, the present embodiment provides a method for assembling precast beam segments, including the steps of:
A) installing a template, installing the template of the prefabricated segment, wherein two ends of the template are of flat joint structures, reserving a prestressed duct at a preset position, and binding a reinforcing mesh; the flat joint structure can simplify the process design of the tooth joint section beam end in the prior art, eliminates the close-fitting pouring of the traditional section splicing joint, and simplifies the prefabrication process;
B) pre-embedding steel tenon keys, determining the number, size and arrangement positions of the steel tenon keys according to the shear design to be borne by the splicing joints of the sectional beams, pre-embedding a tenon component 10 and a mortise component 20 which are matched with each other at the opposite end parts of the first section 1 and the second section 2 respectively, and pouring concrete; respectively embedding the first embedded section 100 and the second embedded section 200 in the concrete of the first section 1 and the second section 2, so that the tenon 11 protrudes out of the first section 1, and the tenon hole 21 is exposed at the end part of the second section 2;
C) assembling and positioning, namely controlling the relative positions of the first section 1 and the second section 2 through a hoisting device to enable the tenon 11 to be coaxial with the tenon hole 21;
D) splicing connection, namely connecting a first section 1 and a second section 2 through a tenon 11 and a tenon hole 21, wherein the tenon 11 is inserted into the tenon hole 21 and is in clearance fit with the tenon hole 21;
E) and (4) tensioning construction, namely penetrating the prestressed tendons in the reserved prestressed duct, installing gaskets and anchors at two ends and tensioning the prestressed tendons.
The invention provides a steel tenon key and an assembling method for improving the assembling shear strength of precast beam segments, wherein at least two axial ends of a first embedded segment 100 and a second embedded segment 200 are made into cuboid structures, the bearing force of the first segment 1 and the second segment 2 is transmitted to concrete 3 through the side surface of the cuboid in the vertical direction, the concrete 3 only bears the pressure in the vertical direction, the beam end concrete structure is not easy to damage, the bearing force is transmitted through a plane, the stress concentration area between the steel tenon key and the concrete is small, and the shear strength is high; the flat joint with the steel tenon key is adopted to replace a tooth key joint in the prior art, so that the design of the section beam end can be simplified, the close-fitting pouring of the conventional section assembling joint is omitted, and the prefabrication process is simplified.
Claims (8)
1. A steel tenon key for improving the assembling shear strength of a precast beam segment, wherein the precast beam at least comprises a first segment and a second segment; the steel tenon key is characterized by comprising a tenon component and a mortise component which are matched, wherein the tenon component and the mortise component are respectively arranged at the opposite ends of the first section and the second section; the tenon assembly comprises a first embedded section embedded in the first section and a tenon protruding out of the end face of the first section, and the first embedded section and the tenon are coaxial and are integrally formed; the mortise assembly comprises a second embedded section embedded in the second section and a mortise arranged at the end part of the second embedded section, the mortise is coaxial with the second embedded section and is inserted into the tenon, and the tenon is in clearance fit with the mortise; at least two axial ends of the first embedded section and the second embedded section are of cuboid structures.
2. The steel tenon key for improving the splicing shear strength of the precast beam segments according to claim 1, wherein the first embedded segment and the second embedded segment are both of a cuboid structure.
3. The steel-tenon key for improving the splicing shear strength of the precast beam segments according to any one of claims 1 or 2, wherein the first embedded segment and the second embedded segment are respectively provided with an anchoring structure between two axial ends.
4. The steel tenon key for improving the splicing shear strength of the precast beam segments according to claim 3, wherein the axial two ends of the first embedded segment and the second embedded segment are of rectangular structures; the anchoring structure is a cylindrical structure with the top surface and the bottom surface respectively connected with the end faces of the cuboids at the two ends, and the outer diameter of the cylindrical structure is smaller than that of the cuboids at the two ends.
5. The steel tenon key for improving the splicing shear strength of the precast beam segments according to claim 3, wherein the anchoring structures are anchoring ribs protruding out of the peripheries of the first embedded segment and the second embedded segment.
6. The tenon key for improving splicing shear strength of a precast beam segment according to claim 5, wherein the anchoring rib has one of a semicircular or polygonal structure.
7. The steel tenon key for improving the splicing shear strength of the precast beam segments according to claim 1, wherein the joints of the first segment and the second segment are flat joints.
8. A method of assembling precast beam segments, comprising the mortise and tenon joint according to any one of claims 1 to 7, the method comprising the steps of:
A) installing a template, installing prefabricated section templates, wherein two ends of the template are of flat joint structures, reserving prestressed ducts at preset positions, and binding reinforcing mesh;
B) embedding a steel tenon key, embedding a matched tenon component and a matched tenon hole component in the opposite end parts of the first section and the second section respectively, and pouring concrete;
C) assembling and positioning, namely controlling the relative positions of the first section and the second section through a hoisting device to enable the tenon and the mortise to be coaxial;
D) splicing connection, namely connecting a first section and a second section through a tenon and a tenon hole, wherein the tenon is inserted into the tenon hole and is in clearance fit with the tenon hole;
E) and (4) tensioning construction, namely penetrating the prestressed tendons in the reserved prestressed duct, installing gaskets and anchors at two ends and tensioning the prestressed tendons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442809.5A CN111608266A (en) | 2020-05-22 | 2020-05-22 | Steel tenon key for improving shear strength of prefabricated beam segment assembly and assembly method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442809.5A CN111608266A (en) | 2020-05-22 | 2020-05-22 | Steel tenon key for improving shear strength of prefabricated beam segment assembly and assembly method |
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| Publication Number | Publication Date |
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| CN111608266A true CN111608266A (en) | 2020-09-01 |
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| CN202010442809.5A Pending CN111608266A (en) | 2020-05-22 | 2020-05-22 | Steel tenon key for improving shear strength of prefabricated beam segment assembly and assembly method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833202A (en) * | 2021-09-18 | 2021-12-24 | 宁波同三建设集团有限公司 | Concrete superposed beam structure and construction method thereof |
-
2020
- 2020-05-22 CN CN202010442809.5A patent/CN111608266A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833202A (en) * | 2021-09-18 | 2021-12-24 | 宁波同三建设集团有限公司 | Concrete superposed beam structure and construction method thereof |
| CN113833202B (en) * | 2021-09-18 | 2022-11-11 | 宁波同三建设集团有限公司 | Concrete superposed beam structure and construction method thereof |
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