CN-116411664-B - Prefabricated building cover structure

CN116411664BCN 116411664 BCN116411664 BCN 116411664BCN-116411664-B

Abstract

The invention provides a prefabricated floor structure which comprises prefabricated concrete floors, pre-buried steel plates, connecting cover plates and fastening pieces, wherein an upper pre-buried steel plate and a lower pre-buried steel plate are respectively arranged on the top surface and the bottom surface of a connecting end of each prefabricated concrete floor, through holes which penetrate through the upper pre-buried steel plate and the lower pre-buried steel plate are formed in the connecting end of each prefabricated concrete floor, through holes are formed in the two ends of each connecting cover plate, when the two prefabricated concrete floors are in butt joint, the two ends of each upper and lower connecting cover plates are respectively attached to the upper pre-buried steel plate and the lower pre-buried steel plate, and the fastening pieces penetrate through the through holes and then are fixedly connected with the two prefabricated concrete floors. The connecting cover plate can coordinate the deformation of two adjacent precast concrete floors and simultaneously provide bending resistance and shear rigidity, so that the shear rigidity and bearing capacity of the joints of the slabs are greatly improved, the structure is simple, the construction is convenient and quick, the construction period can be greatly shortened, the later partial replacement and updating are convenient, and the like.

Inventors

ZHENG MINGZHAO
WANG HAO
LIU JIE
SUN HONGMIN
MA QING
ZHANG ZEYU
WANG YUEDONG

Assignees

中冶建筑研究总院有限公司

Dates

Publication Date: 20260512
Application Date: 20211230

Claims (10)

1. The prefabricated floor structure is characterized by comprising a prefabricated concrete floor slab, a pre-buried steel plate, a connecting cover plate and a fastener; The embedded steel plate comprises an upper embedded steel plate and a lower embedded steel plate; The top surface and the bottom surface of the connecting end of the precast concrete floor slab are respectively provided with an upper embedded steel plate and a lower embedded steel plate in advance, and the connecting end of the precast concrete floor slab is provided with through holes which are communicated with the upper and lower connecting ends and the upper embedded steel plate and the lower embedded steel plate; The two ends of the connecting cover plate are provided with through holes; when the two precast concrete floors are in butt joint, two ends of the upper connecting cover plate and the lower connecting cover plate are respectively attached to the upper embedded steel plate and the lower embedded steel plate; The connecting end part of the precast concrete floor slab is provided with a tooth groove, and the tooth groove is arranged between two adjacent embedded steel plates; The bottom of the connecting steel plate is provided with a downward protruding clamping part, the connecting end of the precast concrete floor slab is lapped on the steel beam, and the upper flange plate of the steel beam is provided with a connecting hole; When two adjacent precast concrete floors are butted, the two connecting steel plates on the two precast concrete floors are oppositely arranged, bolts penetrate through the steel bar holes on the two connecting steel plates, nuts are screwed at the two ends of the bolts, and then the two precast concrete floors are fixedly connected; The bottom of the upper flange plate is provided with a limiting plate, the limiting plate is arranged in parallel with the clamping part, and through holes are respectively and correspondingly arranged on the limiting plate and the clamping part; The through holes of the clamping part are vertical long holes arranged along the height direction, the through holes of the limiting plate are horizontal long holes arranged along the horizontal direction, and the pin shafts can be inserted in the vertical long holes and the horizontal long holes in a relatively sliding manner.
2. The prefabricated building cover structure according to claim 1, wherein an upper sinking platform for receiving the connecting cover plate above is arranged on the top surface of the connecting end of the prefabricated concrete floor slab, and the upper embedded steel plate is a table surface of the upper sinking platform.
3. The prefabricated building cover structure according to claim 2, wherein the upper connecting cover plate is arranged in the upper sinking platform in a retreating manner after being abutted against the upper embedded steel plate.
4. The prefabricated building cover structure according to claim 1, wherein a sinking table for receiving the connecting cover plate below is arranged on the bottom surface of the connecting end of the prefabricated concrete floor slab, and the lower embedded steel plate is a table surface of the sinking table.
5. The prefabricated building cover structure according to claim 4, wherein the lower connecting cover plate is arranged in the sinking platform in a retreating mode after being abutted against the lower embedded steel plate.
6. The prefabricated building cover structure according to claim 1, further comprising an embedded part, wherein one end of the embedded part is embedded in the prefabricated concrete floor slab, and the other end of the embedded part extends out of the prefabricated concrete floor slab and is fixedly connected with the embedded steel plate.
7. The prefabricated building cover structure according to claim 6, wherein in the prefabricated concrete floor slab, the embedded parts are longitudinally arranged, and the embedded parts are staggered with the transverse steel bars.
8. The prefabricated building cover structure according to claim 1, wherein the fasteners are studs and nuts, connecting pins or rivets.
9. The prefabricated building structure according to claim 6, wherein the embedded parts are anchor bars or steel cables.
10. The prefabricated building cover structure according to claim 1, wherein a plurality of sets of the pre-buried steel plates, the connection cover plates and the fasteners are arranged at intervals in a width direction of the connection ends of the prefabricated concrete floor slab.

Description

Prefabricated building cover structure Technical Field The invention relates to the technical field of assembled buildings, in particular to a prefabricated building cover structure. Background As an important component of the integral building structure, the floor system not only bears constant and active load of floors, but also transmits earthquake action and wind load to each anti-side system. The traditional steel-cast-in-place concrete floor has good stress performance and economy, but has the defects of large cast-in-place template, steel bar and concrete casting workload, low construction speed, high labor cost and the like, has serious environmental pollution, and does not accord with the development concepts of building industrialization and environmental protection. In order to meet the requirement of industrial construction, the floor slab forms of the steel-concrete composite floor slab mainly comprise the forms of a traditional truss rib floor supporting plate, a detachable bottom die truss rib floor supporting plate, a composite floor slab and the like, but through market verification, the products are not mature residential building floor slab solutions. The traditional truss ribbed floor support plate has the advantages of exposed profiled steel plates, poor aesthetic property, poor decoration resistance, poor user experience, low consumer acceptance in houses, complex construction process of the detachable bottom die truss ribbed floor support plate, low actual reusability of the bottom die and higher cost, and the actual plate thickness of the composite floor slab of the composite slab is required to be larger than 150mm, and is not applicable to residential buildings with the common thickness of the floor slab of 100-120 mm. Disclosure of Invention The invention aims to provide a prefabricated building cover structure which solves at least one technical problem existing in the prior art. In order to solve the technical problems, the invention provides a prefabricated floor structure, which comprises a prefabricated concrete floor slab, a pre-buried steel plate, a connecting cover plate and a fastener; The embedded steel plate comprises an upper embedded steel plate and a lower embedded steel plate; The top surface and the bottom surface of the connecting end of the precast concrete floor slab are respectively provided with an upper embedded steel plate and a lower embedded steel plate in advance, and the connecting end of the precast concrete floor slab is provided with through holes which are communicated with the upper and lower connecting ends and the upper embedded steel plate and the lower embedded steel plate; The two ends of the connecting cover plate are provided with through holes; When the two precast concrete floors are in butt joint, two ends of the upper connecting cover plate and the lower connecting cover plate are respectively attached to the upper embedded steel plate and the lower embedded steel plate, and the fasteners penetrate through the through holes and then connect and fix the two precast concrete floors. Further, an upward sinking table for receiving the connecting cover plate above is arranged on the top surface of the connecting end of the precast concrete floor slab, and the upper embedded steel plate is a table top of the upward sinking table. Further, the upper connecting cover plate is attached to the upper embedded steel plate, and then the top surface of the lower connecting cover plate is retreated and arranged in the upper sinking table. Further, a sinking table for receiving the connecting cover plate below is arranged on the bottom surface of the connecting end of the precast concrete floor slab, and the lower embedded steel plate is a table surface of the sinking table. Further, after the lower connecting cover plate is attached to the lower embedded steel plate, the bottom surface of the lower connecting cover plate is arranged in the sinking table in a retreating mode. Further, the embedded part is further arranged, one end of the embedded part is embedded in the precast concrete floor slab, and the other end of the embedded part extends out of the precast concrete floor slab and is fixedly connected with the embedded steel plate. Specifically, the embedded part and the embedded steel plate are welded in a factory, the concrete floor slab is prefabricated at the same time, and the embedded steel plate is fixedly connected with the prefabricated concrete floor slab through the embedded part. Further, in the precast concrete floor slab, the embedded parts are longitudinally distributed, and the embedded parts and the transverse steel bars are arranged in a staggered mode. Further, the fasteners are studs and nuts, connecting pins or rivets and the like. Preferably, the fastener comprises a torsional shear type high strength bolt and nut. Further, the embedded part is an anchor bar or a steel cable. Further, the length of the anchor bar is more than