CN206636250U - A kind of replaceable masonry breast structure - Google Patents

Abstract

The utility model discloses a replaceable masonry window lower wall structure, which includes a steel mesh; N leather blocks are built on the steel mesh, and N is a positive integer greater than or equal to 2; the i skin block and the i+ 1 Mild steel dampers are buried in the mortar between the skin blocks; i is a positive odd number greater than or equal to 1, and i+1 is less than or equal to N; the two ends of the N skin blocks are formed with horse teeth on both sides of the damaged wall Cha matching horse tooth cha. The utility model is based on the component repair principle completely different from the reinforcement method of the traditional masonry structure wall, and realizes a replaceable prefabricated reinforcement component by using an energy-dissipating shock-absorbing device added. The prefabricated components speed up the construction progress and simplify the construction process. The shock absorption technology enhances the seismic performance of the components and improves the ductility of the overall structure. The utility model has operability and popularization, and can bring significant economic and social benefits.

Description

A replaceable masonry window lower wall structure

technical field

The utility model belongs to the technical field of post-disaster reinforcement and restoration of building structures, in particular to a replaceable masonry window lower wall structure.

Background technique

Masonry structure plays an important role in the process of urbanization in my country. As an important structural form at present, it has the advantages of large retention, wide coverage and strong practicality. However, the seismic fortification level of the area where such structures are located is usually low, and damage is extremely easy to occur in an earthquake. As an important part of the masonry structure that cannot be ignored, the wall under the window is often damaged to varying degrees after the earthquake. The repair method for the damaged wall under the window after the earthquake is currently mainly to repair the damaged wall and repair it as it is. The disadvantages of this repair method are: the workload of repairing the repair is large and the construction progress is slow, accompanied by a certain amount of wet work, The impact of the next earthquake has not been considered.

The most obvious feature of the damaged masonry structure after the earthquake is that the damaged parts are similar and the number of damaged components is large. With the vigorous promotion of national prefabricated assembly structures, it provides convenience for the prefabricated assembly of structural reinforcement. In order to overcome the shortcomings of the existing reinforcement methods, for the wall under the damaged window of the masonry structure, it is necessary to realize a reinforcement member with simple structure, rapid construction, easy replacement, and excellent seismic effect.

Utility model content

The purpose of this utility model is to provide a replaceable masonry window lower wall structure, which is a replaceable prefabricated component used for rapid repair of the masonry structure window lower wall after an earthquake, so as to overcome the shortcomings of the existing reinforcement and repair technology . The utility model realizes a prefabricated component of the wall under the window with simple structure, rapid construction, easy replacement and good seismic performance. The prefabricated component is added with an energy dissipation device, which can work together with the masonry structure to exert an ideal shock absorption effect, improve the seismic capacity of the masonry structure, and meet the requirements for the rapid recovery of the existing structure after the earthquake.

In order to achieve the above object, the utility model adopts the following technical solutions:

A replaceable masonry window lower wall structure, including steel mesh; N leather blocks are built on the steel mesh, N is a positive integer greater than or equal to 2; the i-th skin block and the i+1-th skin block Mild steel dampers are buried in the mortar between them; i is a positive odd number greater than or equal to 1, and i+1 is less than or equal to N; the two ends of the N leather block are formed with horse teeth that match the horse teeth on both sides of the damaged wall. Yacha.

Further, the middle part of the mild steel damper is slotted, and the two ends are provided with end claws.

Further, the end claws at both ends of the mild steel damper are located in the corresponding horse teeth at the two ends of the N leather block.

Furthermore, the middle part of the mild steel damper is provided with double wave grooves.

Further, two HPB235 steel bars with a diameter of 4mm are welded and fixed at the bottom of the steel mesh.

Further, the thickness of the reinforcing mesh sheet is 4 mm, and several mesh holes are evenly distributed on the reinforcing mesh sheet.

Further, the replaceable masonry window lower wall structure is installed in the damaged hole of the damaged window lower wall, and the two sides of the damaged window lower wall have Horse-toothed horse-toothed horse-toothed wood with concave-convex splicing.

Further, steel bars are pre-embedded in the buttress of the wall under the damaged window, and the pre-embedded steel bars are welded and connected to the end claws of the corresponding mild steel dampers on the outside.

Further, the yield strength of the mild steel damper shall not be lower than the shear strength of the wall under the damaged window.

The damping device adopted by the prefabricated component of the utility model is a mild steel damper, and its yield strength should not be lower than the shear strength of the wall. The strength of the prefabricated blocks is consistent with that of the original blocks, and the strength of the masonry mortar can be one grade higher than that of the original mortar. The masonry process adopts the all-cis masonry method.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model is based on the component repair principle completely different from the reinforcement method of the traditional masonry structure wall, and realizes a replaceable prefabricated reinforcement component by using an energy-dissipating shock-absorbing device added. The prefabricated components speed up the construction progress and simplify the construction process. The shock absorption technology enhances the seismic performance of the components and improves the ductility of the overall structure. The utility model has operability and popularization, and can bring significant economic and social benefits.

Description of drawings

Figure 1 is an elevation view of the wall under the damaged masonry structure;

Fig. 2 is a schematic diagram of the novel manufacturing process;

Fig. 3 is the flat and elevation view of the new bottom;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is the schematic diagram of the mild steel damper embedded in the novel wall;

Fig. 6 is the elevation view of the finished product of the novel prefabricated component;

Figure 7 is the elevation view of the demolition opening of the wall under the damaged window;

Fig. 8 is the elevation view of the new prefabricated component installed in place.

In the figure: 1 spacer; 2 bottom reinforcement; 3 reinforcement mesh; 4 soft steel damper; 5 mortar; 11 blocks; 12 walls at both ends; 13 lintels; 14 prefabricated window lower wall components; 15 protruding claws at the ends.

detailed description

Please refer to Fig. 1 to Fig. 8, a method for preparing a replaceable masonry window lower wall structure of the present invention includes the following steps:

Step 1: Select the materials required for making prefabricated components: the shock absorber adopts double wave mild steel damper 4, and its size is determined according to the wall with holes; the size of steel mesh 3 is width*thickness=240mm*4mm, and the length is Determine the width of the hole wall; select 2 HPB235 steel bars with a diameter of 4mm; select standard brick blocks 11 with the same strength as the original blocks; select mortar 5 with a strength level higher than the original mortar; type masonry method masonry;

Step 2: Place the two pads 1 on the operating platform, and the distance between them should be uniform to facilitate hoisting, then place two steel bars 2 with a distance of 120mm in parallel on the pad 1, and then place the steel mesh 3 After being placed on the two steel bars 2, perform multi-point spot welding to form the bottom support;

Step 3: laying mortar 5 on the reinforced mesh sheet 3 supported at the bottom, the thickness of the mortar 5 should be uniform and full, and the first skin block 11 is built sequentially;

Step 4: After laying the mortar 5 on the first skin block 11, place the mild steel damper 4 on the mortar 5, then lay the mortar 5 on the mild steel damper 4 and ensure that each groove of the mild steel damper 4 The mortar 5 in the hole is full; according to the protruding length of the horse teeth 6 in the wall body 12 at both ends, start to build the second skin brick after indenting the same length;

Step 5: Repeat steps 3 and 4 to embed mild steel dampers 4 every other skin block 11, build to the top skin block 11, and then maintain and shape;

Step 6: Remove the damaged lower wall of the window, and make the two ends of the wall 12 form a horse-toothed bridge 6 at the edge. According to the connection position of the mild steel damper 4 in the prefabricated lower wall of the window on the two ends of the wall 12, from top to bottom Drill a hole at the corresponding position with a depth of 150 mm. After the hole is formed, implant a steel bar 7 with a length of 200 mm to ensure that the exposed steel bar 7 can be welded with the protruding claws 15 at both ends of the mild steel damper 4; install the prefabricated window lower wall member 14 position, to ensure that its edge is neatly spliced with the horse teeth 6 of the wall body 12 at both ends. Tensile strength, after grouting and caulking, it will be put into use when it reaches the specified strength.

The utility model is a replaceable masonry window lower wall structure, comprising two parallel steel bars 2 and steel mesh 3; the steel mesh 3 is arranged on the two parallel steel bars 2 and fixedly connected by spot welding to form Bottom support; N skin blocks 11 are built on the steel mesh 3, where N is a positive integer greater than or equal to 2; mild steel damping is embedded in the mortar between the i skin block and the i+1 skin block Device 4; the middle part of the mild steel damper 4 is provided with double wave grooves, and the two ends are provided with end claws 15; i is a positive odd number greater than or equal to 1, and i+1 is less than or equal to N. The two ends of the N leather block 11 are formed with a horse-toothed frame that cooperates with the horse-toothed frame on both sides of the damaged wall, and the end protruding claws 15 at both ends of the mild steel damper 4 are located in the horse-toothed frame.

A replaceable masonry window lower wall structure of the utility model is installed in the hole removed from the lower part of the damaged window lower wall 12. The horse teeth on both sides are joined; the horse teeth on both sides of the damaged window wall 12 are embedded with embedded steel bars 7, and the end claws 15 at both ends of the mild steel damper 4 are connected with the corresponding embedded steel bars 7 on the outside. Fix it by welding to ensure its tensile strength, and then grout and fill the joints, and put it into use when it reaches the specified strength.

Claims (9)

1. A replaceable masonry window lower wall structure is characterized in that it comprises a steel mesh (3); the steel mesh (3) is built with N skin blocks (11), and N is greater than or equal to 2 A positive integer; a mild steel damper (4) is buried in the mortar between the i-th skin block and the i+1-th skin block; i is a positive odd number greater than or equal to 1, and i+1 is less than or equal to N; N skin blocks The two ends of the block (11) are formed with horse-toothed chasms that cooperate with the horse-toothed chasms on both sides of the damaged wall. 2. A replaceable masonry window lower wall structure according to claim 1, characterized in that the middle part of the mild steel damper (4) is slotted, and the two ends are provided with end protruding claws (15). 3. A replaceable masonry window lower wall structure according to claim 2, characterized in that the end claws (15) at both ends of the mild steel damper (4) are located at the two ends of the N skin block (11). The end corresponds to the middle of the horse teeth. 4. A replaceable masonry window lower wall structure according to claim 2, characterized in that, the middle part of the mild steel damper (4) is provided with double wave grooves. 5. A replaceable masonry window lower wall structure according to claim 1, characterized in that two HPB235 steel bars with a diameter of 4mm are fixed by welding at the bottom of the reinforcement mesh sheet (3). 6. A replaceable masonry window lower wall structure according to claim 1, characterized in that the thickness of the reinforcement mesh is 4 mm, and a number of mesh holes are evenly distributed on the reinforcement mesh. 7. A replaceable masonry window lower wall structure according to claim 2, characterized in that, said replaceable masonry window lower wall structure is installed on the affected part of the damaged window lower wall (12). In the damaged hole, the both sides of the damaged window lower wall (12) have horse-toothed chasses that are spliced and matched with the horsestootheds on both sides of the replaceable masonry lower wall under the window structure. 8. A replaceable masonry window lower wall structure according to claim 7, characterized in that reinforcing bars are pre-embedded in the horse teeth of the damaged window lower wall (12), and the pre-embedded reinforcing bars and corresponding The end claws of the mild steel damper (4) are welded on the outside. 9. A replaceable masonry window lower wall structure according to claim 7, characterized in that the yield strength of the mild steel damper (4) is not lower than the shear strength of the damaged window lower wall (12) .