CN104631618B - Swing infilled wall frame structure with high shock resistance - Google Patents

Abstract

The invention discloses a reinforced concrete frame structure with strong earthquake resistance and a swing filled wall frame structure belonging to the technical field of civil engineering structures. The reinforced concrete frame consists of N middle frame columns, two side frame columns, bottom frame beams, and a top frame Beams and M frame beams, which are divided into multiple rectangular frames by middle frame columns, and each span frame is divided into multiple square frames by frame beams; the rectangular frame filled with reinforced concrete is a swinging infill wall; the two sides of the swinging infill wall The rectangular frame is made of lightweight blocks to form a lightweight block infill wall. High-strength prestressed steel strands are arranged in the swaying infill wall to allow the base of the middle frame column to be lifted when the structure undergoes lateral displacement. Tensile prestress realizes self-resetting ability, reduces the damage concentration of the structure, improves the deformation capacity and bearing capacity of the frame structure; avoids the shortcomings of the traditional reinforced concrete frame structure's limited seismic capacity and deformation concentration, and the invention has simple structure, convenient construction, and improves the frame structure. seismic performance.

Description

An earthquake-resistant rocking infill wall frame structure

technical field

The invention belongs to the technical field of civil engineering structures. In particular, it relates to a rocking infill wall frame structure which is highly resistant to earthquakes

Background technique

As a structural form with clear force and simple structure, reinforced concrete frame structure has been widely used in engineering field. In previous earthquakes, cases of frame structures collapsed and damaged are common, causing huge casualties and property losses. Frame collapse is often caused by concentrated structural deformation, and controlling the structural deformation mode is the key to preventing collapse damage. The rocking wall can effectively control the deformation mode of the structure and make the displacement distribution between floors more uniform. The swinging infill wall frame combines the swinging wall with the widely used filling wall in the frame structure, which helps to reduce the constraints of the external swinging wall on the architectural effect and simplifies the connection between the swinging wall and the frame. Prestressed steel bars provide good self-resetting capabilities for the structure.

Contents of the invention

The object of the present invention is to provide a frame structure with strong earthquake resistance for rocking infill walls, characterized in that the frame structure for rocking infill walls with strong earthquake resistance is a reinforced concrete frame structure; the reinforced concrete frame structure consists of N middle frame columns , two side frame columns, bottom frame beams, top frame beams and M frame beams, in which the middle frame columns are divided into N+1 rectangular frames, and each rectangular frame is divided into M+1 square frames by frame beams ; The rectangular frame filled with reinforced concrete is a swaying filling wall; the rectangular frames on both sides of the swaying filling wall are made of lightweight blocks to form a lightweight block filling wall; in the swinging filling wall, prestressed steel bars are vertically embedded The two ends of the prestressed steel pre-embedded pipe pass through the top frame beam and the bottom frame beam respectively, and are fixed with them; the top steel beam is fixed with the reinforced concrete frame on the top of the rocking filling wall through the anchor steel bar, and the bottom steel beam is fixed by the anchor bar. Above the foundation beam; the prestressed steel bar passes through the prestressed steel bar embedded pipe, the top steel beam and the bottom steel beam, and the two ends are respectively anchored on the outer sides of the top steel beam and the bottom steel beam.

Each frame of the rocking filling wall is configured with vertically distributed steel bars, horizontally distributed steel bars and tie bars, and a prestressed steel pre-embedded pipe is vertically embedded in the center of the grid surrounded by the horizontally distributed steel bars and tie bars.

The frame beams, the bottom frame beams and the top frame beams corresponding to the frame of the rocking filling wall are provided with through holes passing through the pre-stressed reinforced pre-embedded pipes.

In the reinforced concrete frame, the column bases connected to the middle frame columns on both sides of the swing filling wall are in contact with the foundation beams but not connected, allowing the column bases to be lifted; the column bases located on both sides of the reinforced concrete frame connected to the side frame columns The seat is firmly connected with the foundation beam.

In each frame of the light block filling wall, flexible filling materials are filled between the light block filling wall and the surrounding frame beams and frame columns.

The anchoring reinforcement is welded on the top steel beam and the bottom steel beam, and is directly poured into the top frame beam and foundation beam of the concrete structure.

The top steel beam is made of I-shaped steel, and there are openings for prestressed steel bars on both sides. The top steel beam needs to be welded with multiple stiffeners to avoid local instability under the action of prestressed steel bars.

The bottom steel beam is made of I-shaped steel, and there are holes for prestressed steel bars on both sides. The bottom steel beam needs to be welded with multiple stiffeners to avoid local instability under the action of prestressed steel bars.

The column base of the middle frame column is in contact with the foundation beam, but not connected; and the flexible filling material is filled between the lightweight block filling wall and the surrounding frame beams and frame columns. The overall swing reduces the concentration of deformation in the frame and prevents the wall from being damaged.

Said N and M are positive integers equal to or greater than 2; their values are equal or different.

The beneficial effect of the invention is that the prestressed steel bars are introduced into the frame structure of the novel swinging filling wall. When the building structure is subject to earthquake and undergoes lateral displacement, the concrete frame column is damaged, and the structural bearing capacity is insufficient to cause collapse and damage. The new swaying infill wall frame can effectively control the deformation mode of the structure, avoid the damage concentrated on a certain floor, and improve the deformation capacity of the structure. The rocking infill wall can be pivoted on both sides of the bottom. The deformation of the structure is evenly distributed on each floor, which effectively avoids the damage to the frame caused by the concentrated deformation. The prestressed steel bars remain elastic during the earthquake, and when the earthquake is over, the swaying infill wall can return to its original position under the action of the prestressed steel bars, which brings great convenience to the post-earthquake repair of the structure; making full use of the advantages of concrete and steel bars Performance, effectively reducing costs while ensuring bearing capacity.

Description of drawings

Figure 1 is a schematic diagram of a rocking infill wall frame with strong seismic resistance.

Figure 2 is a B-B section view of the swinging infill wall frame.

Figure 3 is the A-A section view of the rocking infill wall.

Figure 4 is a detailed view of the bottom of the new swinging infill wall shown in Figure 1 .

detailed description

The invention provides a frame structure of a rocking filled wall with strong earthquake resistance, which will be described below with reference to the accompanying drawings.

As shown in Figures 1 to 4, the frame structure of the rocking infill wall with strong seismic resistance is a reinforced concrete frame structure; the reinforced concrete frame structure consists of N middle frame columns 9, two side frame columns 11, bottom frame beams 17, top Frame beams 16 and M root frame beams 8 are formed, wherein, be divided into N+1 rectangular frame by middle frame 9, each rectangular frame is separated into M+1 square frames by frame beam 8; Described N, M are equal to Or a positive integer greater than 2; its value is equal or not equal; the rectangular frame filled with reinforced concrete is the swing filling wall 1; the frame beam 8, the bottom frame beam 17, and the top frame beam 16 corresponding to the swing fill wall square frame There is a through hole passing through the prestressed steel pre-embedded pipe 2. The rectangular frames on both sides of the rocking filling wall 1 form a lightweight block filling wall 18, which is built by lightweight blocks 10; The flexible filling material 12 is filled between the frame beams and frame columns (as shown in Figure 2). In the swing filling wall 1, the prestressed steel pre-embedded pipe 2 is vertically buried, and the two ends of the prestressed steel pre-embedded pipe 2 pass through the top frame beam 16 and the bottom frame beam 17 respectively, and are fixed with them; the top steel beam 5 The anchor bar 4 is fixed to the reinforced concrete frame at the top of the swaying filling wall, and the bottom steel beam 6 is fixed on the foundation beam 7 by the anchor bar 4; Behind the beam 6, the two ends are respectively anchored on the outer sides of the top steel beam 5 and the bottom steel beam 6 (as shown in Figures 1 and 4). Each frame of the rocking filling wall is configured with vertically distributed steel bars 13, horizontally distributed steel bars 14 and tie bars 15, and prestressed steel bars are vertically embedded in the center of the grid surrounded by horizontally distributed steel bars 14 and tie bars 15. Tube 2 (shown in Figure 3).

In the reinforced concrete frame, the column base 19 connected to the middle frame column 9 on both sides of the swing filling wall 1 is in contact with the foundation beam 7 but not connected, allowing the bottom of the column base to lift; located on both sides of the reinforced concrete frame connected to the side The column base 19 of the frame column 11 is firmly connected to the foundation beam 7 .

The anchoring steel bar 4 is welded on the top steel beam 5 and the bottom steel beam 6, and is directly poured in the top frame beam 16 and the foundation beam 7 of the concrete structure, the top steel beam 5 is connected with the top frame beam 16, and the bottom steel beam Beam 6 and foundation beam 7 are connected together.

The top steel beam adopts I-shaped steel, and there are 3 openings for prestressed steel bars on both sides. The top steel beam needs to be welded with multiple stiffeners to avoid local instability under the action of prestressed steel bars.

The bottom steel beam adopts I-shaped steel, and there are prestressed steel bars 3 openings on both sides. The bottom steel beam needs to be welded with multiple stiffeners to avoid local instability under the action of prestressed steel bars 3 .

The column base 19 of the middle frame column 9 is in contact with the foundation beam 7, but is not connected; and the flexible filling material 12 is filled between the lightweight block filling wall 18 and the surrounding frame beams and frame columns, and through their cooperation, When the wall swings around the bottom as a whole, it reduces the concentration of deformation in the frame and prevents the wall from being damaged.

The swing infill wall frame can effectively control the structural deformation mode, avoid the situation that the deformation of the traditional reinforced concrete frame tends to concentrate on the bottom floor during the earthquake, help reduce the damage of the concrete frame column, and prevent the collapse and damage caused by insufficient structural bearing capacity. The swinging of the swinging wall can increase the deformation of the frame beams connected to it, make full use of the performance of concrete and steel reinforcement materials, and effectively reduce the cost while ensuring the bearing capacity. The prestressed tendons arranged in the frame of the new swinging infill wall are conducive to providing self-resetting ability for the concrete frame after the earthquake and realizing the rapid recovery of structural functions.

Claims (6)

1. what a kind of shock resistance was strong waves Fill model, and what described shock resistance was strong waves Fill model is reinforcing bar Concrete frame structure；This reinforced concrete frame structure is set a roof beam in place by N root center trestle, two side framed columns, underframe, top frame Beam and M root Vierendeel girder are constituted, and are wherein separated into N+1 rectangle frame by center trestle, each rectangle frame is separated into M+1 by Vierendeel girder Individual square frame；It is characterized in that, it is to wave filling wall by the rectangle frame that armored concrete is filled；Wave the rectangle frame on filling wall both sides Built by laying bricks or stones by light block and form light block filling wall；Waving filling within the walls, vertical embedment deformed bar built-in pipe, in advance should Power reinforcing bar built-in pipe two ends are each passed through that top frame is set a roof beam in place and bottom frame is set a roof beam in place, and fix with them；Top girder steel passes through anchoring Reinforcing bar with wave filling wall top top frame and set a roof beam in place fixation, bottom girder steel is fixed on foundation beam by anchor bar；Deformed bar Through deformed bar built-in pipe, top girder steel and bottom girder steel, two ends are anchored at the outer of top girder steel and bottom girder steel respectively Side；Described waving in filling each square frame of wall configures vertical distribution bar, horizontal distribution reinforcing bar and lacing wire, in horizontal distribution reinforcing bar Deformed bar built-in pipe is vertically imbedded at the grid center surrounding with lacing wire.

2. according to claim 1 a kind of shock resistance strong wave Fill model it is characterised in that described correspond to Wave the filling Vierendeel girder of wall square frame, have through hole through deformed bar built-in pipe on underframe is set a roof beam in place, top frame is set a roof beam in place.

3. according to claim 1 a kind of shock resistance strong wave Fill model it is characterised in that described reinforcing bar mix In solidifying soil framework, contact with foundation beam positioned at the base for post waving filling wall both sides and being connected to center trestle but be not connected to it is allowed to Base for post lifts；The base for post being connected to side framed columns positioned at reinforced concrete frame both sides is firmly connected with foundation beam.

4. according to claim 1 a kind of shock resistance strong wave Fill model it is characterised in that described middle frame The base for post of post is contacted with foundation beam, but is not connected to；And light block fills and fills out between the Vierendeel girder of wall and periphery, frame column Fill flexible packing material, by its collective effect, body of wall occurs Integral swinging around bottom, and the deformation reducing in framework is concentrated, and prevents Only body of wall is damaged, and described light block is filled in each square frame of wall, the Vierendeel girder of light block filling wall and periphery, framework Filling flexible packing material between post.

5. according to claim 1 a kind of shock resistance strong wave Fill model it is characterised in that described top steel Beam adopts i shaped steel, and there is deformed bar perforate both sides, and top girder steel needs to weld polylith ribbed stiffener, it is to avoid in prestress steel Local buckling occurs in the presence of muscle.

6. according to claim 1 a kind of shock resistance strong wave Fill model it is characterised in that described bottom steel Beam adopts i shaped steel, and there is deformed bar perforate both sides, and bottom girder steel needs to weld polylith ribbed stiffener, it is to avoid in prestress steel Local buckling occurs in the presence of muscle.