Anti-seismic reinforcing structure of masonry structure prefabricated floor slab

Abstract

The utility model relates to the technical field of building reinforcement, in particular to an anti-seismic reinforcing structure of a masonry structure prefabricated floor, which comprises a bearing wall and a prefabricated floor, and is characterized in that the bearing wall is perpendicular to the prefabricated floor to form a right-angle position, angle steel is attached to the right-angle position, and the angle steel is strip steel with two perpendicular sides and in a right-angle shape. The two sides of the angle steel are attached to the load-bearing wall and the prefabricated floor respectively, a reinforcing structure parallel to the two sides of the angle steel is arranged on the side, away from the load-bearing wall and the prefabricated floor which are attached to the angle steel, of the load-bearing wall, and a plurality of tie bolts penetrate between the reinforcing structure and the angle steel. According to the scheme, the problems that the prefabricated floor slab and the bearing wall body are not connected, and the prefabricated slabs collide with each other when an earthquake occurs can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of building reinforcement, in particular to an earthquake-resistant reinforcement structure of a prefabricated floor slab of a masonry structure. Background Art

[0002] In old residential areas, some houses are masonry structures, which are load-bearing structures composed of brick walls, prefabricated floor slabs and roof layers. Prefabricated panels, as a cement component, are made in advance using reinforced concrete and directly installed on site. They are mainly used for the floor slabs of buildings. Common masonry structures are one-story, two-story, and multi-story structures. The houses are not equipped with ring beams and structural columns, and there are no earthquake-resistant measures. The prefabricated panels are placed directly on the load-bearing walls. The loads borne by the prefabricated panels are mainly transmitted in the short span direction, and then to the load-bearing walls. The prefabricated panels are independent of each other, and no connection measures are taken. The masonry is not standardized, the construction quality is poor, the bearing capacity is low, and the earthquake resistance is poor. When an earthquake occurs, there is a large displacement between the floor slabs, the prefabricated panels will collide with each other, and the walls will crack or collapse severely. The disaster situation of these houses is not optimistic, and the probability of collapse is greatly increased compared with other frame structures and steel structures. If the demolition and reconstruction that does not meet the requirements of the current earthquake-resistant specifications is carried out, it will inevitably cause a huge waste of building resources. For this reason, the earthquake resistance of masonry structures has always been a key research topic in the field of construction. Utility Model Content

[0003] The utility model provides an earthquake-resistant reinforcement structure of a masonry structure prefabricated floor slab to solve the problem that there is no connection between the prefabricated floor slab and the load-bearing wall, and the prefabricated slabs collide with each other when an earthquake occurs.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is as follows: an earthquake-resistant reinforcement structure of a masonry structure prefabricated floor, including a load-bearing wall and a prefabricated floor. The load-bearing wall and the prefabricated floor are perpendicular to each other to form a right angle, and an angle steel is provided at the right angle. The angle steel is a long steel strip with two sides perpendicular to each other and at a right angle. The two sides of the angle steel are respectively in contact with the load-bearing wall and the prefabricated floor, and a reinforcement structure parallel to the two sides of the angle steel is provided on the side of the load-bearing wall and the prefabricated floor away from the contact of the angle steel, and a plurality of tie bolts are passed between the reinforcement structure and the angle steel.

[0005] The basic principle of this solution is: by installing angle steel at the connection between the load-bearing wall and the prefabricated floor slab, the angle steel, the prefabricated floor slab and the reinforcement structure are connected as a whole through tie bolts to improve the connection strength between the load-bearing wall and the prefabricated floor slab.

[0006] The beneficial effects of this solution are as follows: the existing masonry structure has no connection between the prefabricated floor slabs and the load-bearing walls, and the prefabricated panels collide with each other when an earthquake occurs. This solution makes the reinforced masonry structure house wall, prefabricated panels and the angle steel, tension bolts and other combined supports in this solution connected as a whole, greatly improving the seismic performance of the original masonry structure house and the bearing capacity of the prefabricated panels. Under the action of an earthquake, the slippage between the prefabricated panels and the walls is reduced or prevented, greatly improving the overall performance of the house; this reinforcement method has the advantages of being simple, convenient, efficient and reliable, and has certain economic benefits for the renovation of old houses in towns or rural areas.

[0007] Furthermore, the prefabricated floor is located on the upper part of one side of the load-bearing wall, the angle steel is a first angle steel and is arranged between the bottom surface of the prefabricated floor and the side surface of the load-bearing wall, and the reinforcement structure is a second angle steel, which is parallel to the first angle steel and is arranged between the top surface of the prefabricated floor and the other side of the load-bearing wall. Strengthen the nodes.

[0008] Furthermore, the load-bearing wall is located in the middle of the bottom surface of the prefabricated floor, the angle steel is the first angle steel, which is symmetrically arranged between the two sides of the load-bearing wall and the bottom surface of the prefabricated floor, the reinforcement structure is a steel plate, which is arranged parallel to the top surface of the prefabricated floor and located above the load-bearing wall, the tie bolt passes through the steel plate, the prefabricated floor, and the first angle steel, and the tie bolt also passes through the first angle steel and the load-bearing wall on both sides of the load-bearing wall. The "T"-shaped node between the prefabricated floor and the load-bearing wall is reinforced.

[0009] Furthermore, the prefabricated floor is horizontally arranged in the middle of the vertical height of the load-bearing wall, the angle steel is the first angle steel, the first angle steel is respectively arranged between the load-bearing wall and the bottom surface of the prefabricated floor, the first angle steel is also arranged between the load-bearing wall and the top surface of the prefabricated floor, the tie bolts respectively pass through the parallel sides of adjacent first angle steels and the prefabricated floor, the tie bolts also pass through the parallel sides of adjacent first angle steels and the load-bearing wall. The "cross" node between the prefabricated floor and the load-bearing wall is reinforced.

[0010] Furthermore, the load-bearing wall is two-sided, the prefabricated floor is located between the tops of the two load-bearing walls, and the top surface of the prefabricated floor and the top surface of the load-bearing wall pass through the same horizontal plane; the angle steel is a first angle steel, which is arranged between the bottom surface of the prefabricated floor and the inner side of the load-bearing wall, and the reinforcement structure is a second angle steel, which is parallel to the second angle steel and is arranged between the top surface of the prefabricated floor and the outer side of the load-bearing wall;

[0011] Two parallel non-load-bearing walls are vertically arranged between the two load-bearing walls, and an I-beam is arranged at the bottom of the prefabricated floor slab. The I-beam is arranged parallel to the first angle steel and the end faces of the I-beam are respectively fixed on the non-load-bearing walls. There are two The precast floor slab between the two nodes can be supported from the bottom by I-beams.

[0012] Furthermore, a steel structure pad is arranged in parallel on the end face of the I-steel, and tie bolts are arranged at the vertices of the steel structure pad, and a steel structure pad is arranged on the side of the non-load-bearing wall away from the I-steel, and the tie bolts pass through the non-load-bearing wall and the steel structure pads on both sides of the non-load-bearing wall. The reinforced masonry structure house wall, prefabricated panel, first angle steel, second angle steel, I-steel, steel plate, steel structure pad, tie bolts and other combined supports are connected as a whole, which greatly improves the seismic performance of the original masonry structure house and the bearing capacity of the prefabricated panel.

[0013] Furthermore, the size of one side of the first angle steel is 200mm×200mm×12mm, and the size of one side of the second angle steel is 500mm×500mm×15mm.

[0014] Furthermore, the size of the steel structure pad is 300mm×300mm×8mm or 300mm×300mm×10mm.

[0015] Furthermore, the thickness of the steel plate is 8 mm or 10 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a front view schematic diagram of the connection of the two ends of the I-beam in Example 1 of the utility model;

[0018] Figure 3 It is a side view schematic diagram of the connection of the two ends of the I-beam in Example 1 of the utility model;

[0019] Figure 4 In the utility model embodiment 1 Schematic diagram of the shape node;

[0020] Figure 5 This is a schematic diagram of a "T"-shaped node in Example 2 of the present utility model;

[0021] Figure 6 This is a schematic diagram of a "cross" shaped node in Example 3 of the utility model. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] The figure numerals in the drawings of the specification include: load-bearing wall 1, prefabricated floor slab 2, first angle steel 3, tie bolt 4, I-beam 5, steel structure pad 6, steel plate 7, second angle steel 8, non-load-bearing wall 9.

[0024] Embodiment 1:

[0025] Embodiment 1 is basically as attached Figure 4 As shown:

[0026] A seismic reinforcement structure of a masonry prefabricated floor slab comprises a first angle steel 3 and a second angle steel 8. In the present embodiment, the prefabricated floor slab 2 is horizontally erected above a load-bearing wall 1. Opposite right-angle notches are opened at the tops of the opposite surfaces of the two load-bearing walls 1. The right-angle notches respectively lift up the bottoms of the two ends of a prefabricated floor slab 2. The load-bearing walls 1 are respectively perpendicular to the plane where the prefabricated floor slab 2 is located. Two right angles are formed between the opposite surfaces of the load-bearing walls and the bottom surface of the prefabricated floor slab 2. The first angle steel 3 is installed at the two right angles. The first angle steel 3 is a long steel strip with two sides perpendicular to each other to form a right angle. The two sides of the first angle steel 3 respectively touch the opposite surfaces of the load-bearing walls and the bottom surface of the prefabricated floor slab 2.

[0027] A second angle steel 8 is installed at two opposite right angles at the top of the load-bearing wall. The second angle steel 8 is also a long steel strip with two sides perpendicular to each other and at a right angle. One side of the second angle steel 8 touches the top surface of the prefabricated floor 2, and the other side of the second angle steel 8 touches the outer wall of the load-bearing wall 1, and the two sides of the first angle steel 3 and the second angle steel 8 are parallel to each other.

[0028] An anchor bolt 4 is installed between the first angle steel 3 and the second angle steel 8. The anchor bolt 4 is perpendicular to the parallel edges of the first angle steel 3 and the second angle steel 8. In the present embodiment, two anchor bolts 4 are installed between the parallel edges of each side of the first angle steel 3 and the second angle steel 8, i.e., the anchor bolt 4 on one side passes through the first angle steel 3, the prefabricated floor slab 2, and the second angle steel 8, and the anchor bolt 4 on the other side passes through the first angle steel 3, the load-bearing wall 1, and the second angle steel 8.

[0029] A horizontal I-beam 5 is installed on the bottom edge of the prefabricated floor 2. The I-beam 5 is located at the bottom center of the prefabricated floor 2. The I-beam 5 is arranged parallel to the first angle steel 3 and the second angle steel 8. Steel structure pads 6 parallel to the end faces are welded on the end faces of the I-beam 5. In this embodiment, the two load-bearing walls 1 are parallel to each other, and the two non-load-bearing walls 9 are perpendicular to the load-bearing walls 1, thereby forming a square space. The I-beam 5 is arranged between the opposite faces of the two non-load-bearing walls 9. Steel structure pads 6 are arranged in parallel on both sides of the non-load-bearing wall 9. The steel structure pads 6 are rectangular sheets. Tie bolts 4 are arranged at the four vertices of the steel structure pads 6. The tie bolts 4 vertically pass through the two steel structure pads 6 and the non-load-bearing wall 9 at the same time, thereby fixing the I-beam 5 between the non-load-bearing walls 9 below the prefabricated floor 2, providing support for the middle part of the prefabricated floor 2.

[0030] In this embodiment, the two sides of the first angle steel 3 are the same long strip, and the two sides of the second angle steel 8 are also the same long strip, wherein the size of one side of the first angle steel 3 is 200mm×200mm×12mm, and the size of one side of the second angle steel 8 is 500mm×500mm×15mm. The model of the I-beam 5 is preferably I25a. The size of the steel structure pad 6 is 300mm×300mm×8mm or 300mm×300mm×10mm, and in this embodiment it is preferably 300mm×300mm×10mm. The spacing between the first angle steel 3 and the second angle steel 8 is the length of the through-tie bolt 4, which is selected according to the thickness of the two angle steels and the thickness of the load-bearing wall 1 and the prefabricated floor slab 2. In this embodiment, the tie bolt 4 can be 300mm or 500mm.

[0031] like Figure 4 As shown, there are two The prefabricated floor slab 2 is only on one side of the load-bearing wall 1.

[0032] The specific implementation process is as follows:

[0033] Install the first angle steel 3 at the upper end of the two parallel load-bearing walls and the bottom end of the prefabricated floor 2, install the second angle steel 8 on the outer side of the load-bearing wall 1 and the outer wall of the prefabricated floor 2, and vertically penetrate the first angle steel 3 and the second angle steel 8 to complete the fixation of the angle steels on the two side walls of the prefabricated wall. Then install the I-beam 5 in the middle below the prefabricated floor 2 and in the direction parallel to the two angle steels. Weld steel structure pads 6 at both ends of the I-beam 5, and set steel structure pads 6 on the outer side of the non-load-bearing wall 9. Use the tie bolts 4 to penetrate the steel structure pads 6 and the non-load-bearing wall 9 at the same time to fix the I-beam 5. Complete the masonry structure Reinforcement of shaped nodes.

[0034] Embodiment 2:

[0035] Embodiment 2 is basically as attached Figure 5 As shown:

[0036] The difference between this embodiment and embodiment 1 lies in the different positions between the prefabricated floor 2 and the load-bearing wall 1. In this embodiment, a "T"-shaped node is formed between the prefabricated panel and the load-bearing wall 1, that is, two prefabricated floor slabs 2 are horizontally arranged on the top of a load-bearing wall 1, and the load-bearing wall 1 is located in the middle of the bottom surface of the prefabricated floor slab 2.

[0037] In this embodiment, no I-beam 5 is provided. First angle steels 3 are respectively provided at the right angles formed between the upper end of the load-bearing wall 1 and the prefabricated floor 2. The first angle steels 3 on both sides are symmetrically provided along the vertical plane. Steel plates 7 are horizontally provided on the top surfaces opposite to the two prefabricated floor slabs 2. Tie bolts 4 are passed through the edges parallel to the steel plates 7 and the first angle steels 3 below. In this embodiment, four tie bolts 4 are symmetrically provided between the steel plates 7 and the first angle steels 3, and two tie bolts 4 are provided between the two first angle steels 3 and the load-bearing wall 1. The thickness of the steel plates 7 can be 8 mm or 10 mm, and is preferably 10 mm in this embodiment. Thus, the "T"-shaped node between the load-bearing wall 1 and the prefabricated floor slab 2 is reinforced.

[0038] Embodiment 3:

[0039] Embodiment 3 is basically as attached Figure 6 As shown:

[0040] The difference between this embodiment and embodiments 1 and 2 lies in the different positions between the prefabricated floor 2 and the load-bearing wall 1. In this embodiment, the prefabricated floor 2 is horizontally located between the vertical heights of the load-bearing wall 1, and the load-bearing wall 1 is located in the middle of the prefabricated floor 2, forming a "cross" shaped node.

[0041] In this embodiment, no I-beam 5 or steel plate 7 is provided, and four right angles are formed between the two sides of the load-bearing wall 1 and the upper and lower surfaces of the prefabricated floor 2. The first angle steels 3 are respectively provided at the right angles, and tie bolts 4 are passed through the parallel sides of adjacent first angle steels 3. In this embodiment, the number of tie bolts 4 parallel to each other in each direction is 2. Thus, the "cross" node between the load-bearing wall 1 and the prefabricated floor 2 is reinforced.

[0042] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A seismic reinforcement structure of a masonry prefabricated floor, comprising a load-bearing wall and a prefabricated floor, characterized in that: The load-bearing wall and the prefabricated floor slab are perpendicular to each other to form a right angle, at which an angle steel is provided. The angle steel is a long strip of steel with two sides perpendicular to each other and forming a right angle. The two sides of the angle steel are respectively in contact with the load-bearing wall and the prefabricated floor slab. A reinforcement structure parallel to the two sides of the angle steel is provided on the side of the load-bearing wall and the prefabricated floor slab far away from the contact of the angle steel, and a number of tie bolts are passed between the reinforcement structure and the angle steel.

2. The seismic reinforcement structure of a masonry prefabricated floor according to claim 1, characterized in that: The prefabricated floor is located on the upper part of one side of the load-bearing wall, the angle steel is a first angle steel and is arranged between the bottom surface of the prefabricated floor and the side surface of the load-bearing wall, and the reinforcement structure is a second angle steel, which is parallel to the first angle steel and is arranged between the top surface of the prefabricated floor and the other side of the load-bearing wall.

3. The seismic reinforcement structure of a masonry prefabricated floor according to claim 1, characterized in that: The load-bearing wall is located in the middle of the bottom surface of the prefabricated floor, the angle steel is the first angle steel, and the first angle steel is symmetrically arranged between the two sides of the load-bearing wall and the bottom surface of the prefabricated floor. The reinforcement structure is a steel plate, which is arranged parallel to the top surface of the prefabricated floor and located above the load-bearing wall. The tie bolt passes through the steel plate, the prefabricated floor, and the first angle steel. The tie bolt also passes through the first angle steel and the load-bearing wall on both sides of the load-bearing wall.

4. The seismic reinforcement structure of a masonry prefabricated floor according to claim 1, characterized in that: The prefabricated floor is horizontally arranged in the middle of the vertical height of the load-bearing wall. The angle steel is a first angle steel. The first angle steel is respectively arranged between the load-bearing wall and the bottom surface of the prefabricated floor. The first angle steel is also arranged between the load-bearing wall and the top surface of the prefabricated floor. The tie bolts respectively pass through the parallel edges of adjacent first angle steels and the prefabricated floor. The tie bolts also pass through the parallel edges of adjacent first angle steels and the load-bearing wall.

5. The seismic reinforcement structure of a masonry prefabricated floor according to claim 1, characterized in that: The load-bearing wall has two sides, the prefabricated floor is located between the tops of the two load-bearing walls, and the top surface of the prefabricated floor and the top surface of the load-bearing wall pass through the same horizontal plane; the angle steel is a first angle steel, which is arranged between the bottom surface of the prefabricated floor and the inner side of the load-bearing wall, and the reinforcement structure is a second angle steel, which is parallel to the second angle steel and is arranged between the top surface of the prefabricated floor and the outer side of the load-bearing wall; Two parallel non-load-bearing walls are vertically arranged between the two load-bearing walls, and an I-beam is arranged at the bottom of the prefabricated floor slab. The I-beam is arranged parallel to the first angle steel and the end faces of the I-beam are respectively fixed on the non-load-bearing walls.

6. The seismic reinforcement structure of a masonry prefabricated floor according to claim 5, characterized in that: A steel structure pad is arranged in parallel on the end surface of the I-beam, and tie bolts are respectively arranged at the vertices of the steel structure pad. A steel structure pad is correspondingly arranged on the side of the non-load-bearing wall away from the I-beam, and the tie bolts respectively pass through the non-load-bearing wall and the steel structure pads on both sides of the non-load-bearing wall.

7. The seismic reinforcement structure of a masonry prefabricated floor according to claim 6, characterized in that: The size of one side of the first angle steel is 200mm×200mm×12mm, and the size of one side of the second angle steel is 500mm×500mm×15mm.

8. The seismic reinforcement structure of a masonry prefabricated floor according to claim 7, characterized in that: The size of the steel structure pad is 300mm×300mm×8mm or 300mm×300mm×10mm.

9. The seismic reinforcement structure of a masonry prefabricated floor according to claim 3, characterized in that: The thickness of the steel plate is 8mm or 10mm.

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