CN212317184U

CN212317184U - Hybrid frame structure system with rigid hinged nodes

Info

Publication number: CN212317184U
Application number: CN202021163786.6U
Authority: CN
Inventors: 杨峰; 席兆凯; 耿俊迪
Original assignee: Ningbo Excellent Building Technology Co ltd
Current assignee: Ningbo Excellent Building Technology Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-01-08
Anticipated expiration: 2030-06-22

Abstract

A hybrid frame structure system of a rigid hinged joint comprises a precast concrete superposed beam, a steel bearing plate composite floor and a thin-wall steel tube concrete composite column, wherein the precast concrete superposed beam comprises a precast beam and a cast-in-place part, negative bending moment steel bars are arranged in the cast-in-place part, the precast beam is a prestressed precast beam or a non-prestressed precast beam, the steel bearing plate composite floor comprises a steel bearing plate and steel bar concrete poured on the steel bearing plate, the steel bearing plate is a steel bar truss floor bearing plate or a closed floor bearing plate, the steel bearing plates are placed on two sides of the upper part of the precast beam, the thin-wall steel tube concrete composite column comprises a thin-wall steel tube, steel tube inner concrete and a joint U-shaped steel bracket, the thin-wall steel tube is provided with a reinforcing steel plate and a through hole penetrating the negative bending moment steel bars at the joint, the negative bending moment steel bars penetrate through the through hole and extend into the precast concrete superposed beam for a certain length, and, the node U-shaped steel bracket is welded on the outer wall of the thin-wall steel pipe, and the precast beam is placed on the node U-shaped steel bracket. The node areas are connected in a rigid hinged mode, so that the beam ends are hinged under the action of positive bending moment and rigid connected under the action of negative bending moment, the construction difficulty of the node areas is greatly simplified, meanwhile, the thin-wall steel tube concrete combination column can give full play to the performance of thin-wall steel tubes and concrete mechanical materials, the multilayer precast beams can be hoisted simultaneously by concrete in the column without pouring, the node quality is good, the construction progress is fast, and the manufacturing cost is low.

Description

Hybrid frame structure system with rigid hinged nodes

Technical Field

The utility model relates to a structural system of building especially relates to an assembled mixed frame structural system of just articulated connection.

Background

The traditional multilayer steel frame structure system usually uses steel columns and steel beams as vertical and horizontal stress members, has the problems of high manufacturing cost, poor fire resistance and corrosion resistance, high later maintenance cost and the like, has high requirement on joint connection precision and slow hoisting speed, and has large steel pipe wall thickness and large steel consumption if the vertical members adopt steel pipe concrete combined columns. To the project that the layer height is little, the span is little and the load is little, generally adopt assembled reinforced concrete frame structure system, when post and floor adopted different reference numerals, construction process was complicated and difficult, and consequently the post cross-section is big, and the roof beam can only hoist and mount the construction layer by layer, and the progress is slow, and the cost is higher, and the easy collision of beam column node reinforcing bar simultaneously is under construction inconveniently. A rigid hinged connection mixed frame structure system which has large bearing capacity of a combined column, can hoist a plurality of layers of precast beams simultaneously, is hinged under the action of positive bending moment of a beam end of a node area and is rigidly connected under the action of negative bending moment is not reported.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome above-mentioned prior art not enough, provide a combination post bearing capacity big, but the multilayer hoist and mount simultaneously of precast beam, node district beam-ends positive bending moment effect down for articulated, negative bending moment effect down be just articulated connection mixed frame structure system of rigid coupling.

According to the utility model provides a just, articulate mixed frame structure system of node, including precast concrete composite beam, steel bearing plate composite floor and thin-walled steel tube concrete composite post, precast concrete composite beam includes precast beam and cast-in-place part, be equipped with the negative moment reinforcing bar in the cast-in-place part, precast beam is prestressing force precast beam or non-prestressing force precast beam, steel bearing plate composite floor includes steel bearing plate and the reinforced concrete of pouring on the steel bearing plate, steel bearing plate is steel bar truss floor bearing plate or closed floor bearing plate, steel bearing plate shelves both sides in precast beam upper portion, thin-walled steel tube concrete composite post includes thin-walled steel pipe, steel pipe inner concrete and node U shaped steel bracket, thin-walled steel pipe is equipped with the reinforcing steel plate and the through-hole that passes the negative moment reinforcing bar at the node, the negative moment reinforcing bar passes the through-hole, stretches into precast concrete composite beam a certain length, the stiffening steel plate weld link in the through-hole is peripheral, node U shaped steel bracket weld link in thin-walled steel pipe outer wall, the precast beam is shelved on the node U shaped steel bracket.

According to the utility model provides a pair of just, articulated node's mixed frame structure system still has following subsidiary technical characteristic:

the thin-wall steel pipe is formed by welding and combining a plurality of high-strength thin steel plates after cold roll forming, the strength of the thin-wall steel pipe is more than Q345, and the strength of concrete in the steel pipe is more than C50.

The node U-shaped steel bracket comprises a bottom plate, a web plate and an upper flange plate.

The outer wall of the thin-walled steel tube is welded with an outer transverse partition plate, and the bottoms of the adjacent node U-shaped steel brackets are welded and connected through the outer transverse partition plate.

The lower part of the precast beam end is in a slope shape.

The web plate of the node U-shaped steel bracket is in a right-angle ladder shape with a large lower part and a small upper part.

The thin-walled steel pipe is welded with a certain number of shear nails within the U-shaped steel bracket wrapping range, and the shear nails extend out of the inner side and the outer side of the wall of the thin-walled steel pipe by a certain length.

The inner wall of the thin-wall steel pipe is welded with a tie nail or a wavy steel bar.

The inner wall of the thin-wall steel pipe is provided with braces, the braces are steel bars or angle irons, and the braces are arranged at certain intervals along the longitudinal direction of the thin-wall steel pipe.

The thin-wall steel pipe concrete combined column is formed by welding and combining a plurality of sections of thin-wall steel pipes, vertical ribs are welded in the thin-wall steel pipes, connecting reinforcing steel bars are arranged at column joints of the vertical ribs, one ends of the connecting reinforcing steel bars are welded to the vertical ribs, and the other ends of the connecting reinforcing steel bars extend out of the ends of the vertical ribs by a certain length.

According to the utility model provides a pair of just, mixed frame construction system of articulated node has following advantage compared with prior art:

1. realize multilayer precast beam hoist simultaneously, the construction progress is fast.

2. The combined column and the joint adopt concrete without labels, thereby improving the bearing capacity of the column and reducing the section size of the column.

3. The beam column connection node has simple structure, convenient construction and reliable force transmission.

4. The thin-wall steel pipe concrete column uses less steel, saves the cost of various construction measures and reduces the manufacturing cost.

Drawings

Fig. 1 is the effect diagram of the hybrid frame structure system of the rigid hinged joint of the present invention.

Fig. 2 is the utility model discloses a beam column node schematic diagram.

Figure 3 is the utility model discloses beam column node cross-sectional view.

Fig. 4 is the utility model discloses beam column node top view.

Fig. 5 is a schematic view of the thin-walled steel tube composite column of the present invention.

Fig. 6 is the utility model discloses precast concrete composite beam tip schematic diagram.

Fig. 7 is a schematic view of the joint of the multi-section thin-wall steel pipe of the present invention.

Fig. 8 is the utility model discloses truss reinforcing bar building carrier plate sketch map.

Fig. 9 is a schematic view of the closed floor support plate of the present invention.

Fig. 10 is a schematic cross-sectional view of the thin-wall steel pipe-concrete composite column of the present invention.

Fig. 11 is a schematic cross-sectional view of the thin-wall steel pipe-concrete composite column of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 11, in an embodiment of a hybrid frame structure system with rigid hinged joints provided by the present invention, the hybrid frame structure system includes a precast concrete composite beam 1, a steel bearing plate composite floor 2 and a thin-walled steel tube concrete composite column 3, the precast concrete composite beam 1 includes a precast beam 11 and a cast-in-place portion 12, a negative bending moment steel bar 4 is disposed in the cast-in-place portion 12, the precast beam 11 is a prestressed precast beam or a non-prestressed precast beam, the steel bearing plate composite floor 2 includes a steel bearing plate 21 and a steel bar concrete 22 poured on the steel bearing plate, the steel bearing plate 21 is a steel bar truss floor bearing plate 211 or a closed floor bearing plate 212, the steel bearing plate 21 is placed on both sides of an upper portion of the precast beam 11, the thin-walled steel tube concrete composite column 3 includes a thin-walled steel tube 31, a steel tube inner concrete 32 and a joint U-shaped steel bracket 33, the steel tube 31 is provided with a reinforcing steel plate 311 and a through hole 312 for, the hogging moment steel bars 4 penetrate through the through holes 312 and extend into the precast concrete superposed beams 1 for a certain length, the reinforced steel plates 311 are welded on the periphery of the through holes 312, the joint U-shaped steel brackets 33 are welded on the outer walls of the thin-walled steel pipes 31, and the precast beams 11 are placed on the joint U-shaped steel brackets 33. The node areas are connected in a rigid hinged mode, so that the beam ends are hinged under the action of positive bending moment and rigid connected under the action of negative bending moment, the construction difficulty of the node areas is greatly simplified, meanwhile, the thin-wall steel tube concrete combination column 3 can give full play to the performance of thin-wall steel tubes and concrete mechanical materials, the multilayer precast beams 11 can be hoisted simultaneously by concrete in the column without pouring, the node quality is good, the construction progress is fast, and the manufacturing cost is low.

Referring to fig. 10 to 11, in an embodiment of the hybrid frame structure system with rigid hinged joints according to the present invention, the thin-walled steel tube 31 is formed by welding and combining a plurality of high-strength thin steel plates after being formed by cold bending, the strength of the thin-walled steel tube 31 is above Q345, and the strength of the concrete 32 in the steel tube is above C50. The thin-wall steel pipe formed by cold roll forming is convenient to process, automatic welding can be realized, and the cost performance of the material is greatly improved by the high-strength steel pipe and the high-strength concrete.

Referring to fig. 2 to 6, in the embodiment of the hybrid frame structure system of a rigid hinged node provided in the present invention, the node U-shaped steel corbel 33 includes a bottom plate 331, a web 332 and an upper flange plate 333, an outer transverse partition 313 is welded to the outer wall of the thin-walled steel tube 31, the bottom of the node U-shaped steel corbel 33 is connected by the outer transverse partition 313, the web 332 of the node U-shaped steel corbel is in a right-angled ladder shape with a large bottom and a small top, the lower side of the end of the precast beam 11 is in a slope shape 111, a shear pin 5 is welded to the thin-walled steel tube 31 within the wrapping range of the U-shaped steel corbel 33, and the shear pin 5 extends out of the inner side and the outer side of the wall of the thin-walled steel tube. The distance of the concrete is reserved in the slope-shaped precast beam 11, the compactness and the integrity of the concrete are improved, meanwhile, the post-cast concrete forms a concrete bracket with the shear nails 5 after being cast, the node shear strength is further ensured, the U-shaped steel bracket 33 in the right-angle ladder shape saves the steel consumption under the same load, and the upper flange plate and the transverse partition plate which are mutually connected contribute to improving the shear strength.

Referring to fig. 8 to 11, in an embodiment of the present invention, in a hybrid frame structure system of rigid hinged joints, the inner wall of the thin-walled steel tube 31 is welded with a tie nail 315 or a corrugated steel bar 316, the inner wall of the thin-walled steel tube 31 is provided with braces 317, and the braces 317 are steel bars or angle bars arranged at a certain distance along the longitudinal direction of the thin-walled steel tube. The wavy reinforcing steel bars 124 are reinforcing steel bars formed by bending common reinforcing steel bars into wavy shapes, the drawknot nails 315 or the wavy reinforcing steel bars 316 and the brace 317 are arranged in the thin-wall steel pipe 31, the concrete constraint performance is good, formwork support and split bolt fixation can be avoided when concrete is poured, and the construction efficiency is greatly improved.

Referring to fig. 7, in the embodiment of the present invention, in a hybrid frame structure system with rigid hinged joints, the thin-wall steel pipe concrete combined column 3 is formed by welding and combining a plurality of sections of the thin-wall steel pipe 31, vertical ribs 314 are welded in the thin-wall steel pipe 31, the vertical ribs are provided with connecting steel bars at column joints, one end of each connecting steel bar is welded to each vertical rib, and the other end of each connecting steel bar extends out of the end of each vertical rib by a certain length. The internal connecting reinforcing steel bars 318 and the external connecting reinforcing steel bars are welded along the butt joint of the thin-wall steel pipe 31, so that the integrity of the concrete is improved after the concrete is poured, and the mechanical property is good.

In the present invention, all the "certain amount, certain length and certain distance" refer to the length necessary for meeting the design requirement, that is, the length required for adapting to the connection and strength requirement, and the length is clear to those skilled in the art and can be set as required.

Claims

1. A hybrid frame structure system with rigid hinged joints comprises a prefabricated concrete superposed beam, a steel bearing plate composite floor slab and a thin-wall steel pipe concrete composite column, and is characterized in that: the precast concrete superposed beam comprises a precast beam and a cast-in-situ part, wherein a hogging moment reinforcing steel bar is arranged in the cast-in-situ part, the precast beam is a prestressed precast beam or a non-prestressed precast beam, the steel bearing plate composite floor slab comprises a steel bearing plate and reinforced concrete poured on the steel bearing plate, the steel bearing plate is a steel bar truss floor bearing plate or a closed floor bearing plate, the steel bearing plates are arranged on two sides of the upper part of the precast beam, the thin-wall steel pipe concrete combined column comprises a thin-wall steel pipe, steel pipe inner concrete and a node U-shaped steel bracket, wherein a reinforcing steel plate and a through hole for penetrating a negative bending moment steel bar are arranged at the node of the thin-wall steel pipe, the hogging moment reinforcing steel bars penetrate through the through holes and extend into the precast concrete superposed beams for a certain length, the reinforcing steel plates are welded on the periphery of the through holes, the node U-shaped steel bracket is welded on the outer wall of the thin-wall steel pipe, and the precast beam is placed on the node U-shaped steel bracket.

2. The hybrid frame structure system of a rigid hinged joint as claimed in claim 1, wherein said thin-walled steel tube is formed by welding a plurality of high-strength thin steel plates after cold-bending forming, said thin-walled steel tube has a strength of Q345 or more, and said concrete in the steel tube has a strength of C50 or more.

3. A rigid hinged joint hybrid frame structure system as claimed in claim 1, wherein the joint U-beam corbel comprises a bottom plate, a web plate and an upper flange plate.

4. A rigid hinged joint hybrid frame construction system as claimed in claim 1 wherein said thin walled steel tube has an outer diaphragm welded to the outer wall of the tube and the bottom of the U-shaped steel corbel adjacent said joint is welded to the bottom of the tube by said outer diaphragm.

5. A rigid hinged joint hybrid frame structure as claimed in claim 1, wherein the precast beam ends are sloped at the lower portion.

6. A hybrid frame structure system of rigid hinged nodes as claimed in claim 1, wherein the web of the U-shaped steel corbel of the node is in the shape of a right trapezoid with a big bottom and a small top.

7. The hybrid frame structure system with rigid hinged nodes as claimed in claim 1, wherein the thin-walled steel tube is welded with a certain number of shear pins within the U-shaped steel corbel wrapping range, and the shear pins extend out of the inner and outer sides of the thin-walled steel tube wall for a certain length.

8. A rigid hinged joint hybrid frame structure system as claimed in claim 1, wherein said thin walled steel tube has a tie or corrugated steel welded to its inner wall.

9. A rigid hinged joint hybrid frame structure system as claimed in claim 1, wherein said thin walled steel tubes are provided with braces inside, said braces being steel bars or angle bars longitudinally spaced apart from said thin walled steel tubes.

10. A rigid hinged joint hybrid frame structure system as recited in claim 1, wherein said thin wall steel tube concrete composite column is assembled by welding a plurality of sections of said thin wall steel tubes, said thin wall steel tubes are welded with vertical ribs, said vertical ribs are provided with connecting bars at the column joints, one end of said connecting bars is welded to said vertical ribs, and the other end of said connecting bars extends out of the end of said vertical ribs by a certain length.