CN101736832B - Confined masonry structure and making method thereof - Google Patents

Abstract

The invention relates to a constrained masonry structure and a manufacturing method thereof. It is mainly composed of vertical structural bars, ladder lattice reinforced concrete ring beams and masonry. The junction is assembled into a vertical hole, and a vertical structural bar is set at the center of the vertical hole and poured with concrete; the lower end of the vertical structural bar is anchored in the foundation beam, and the upper end is anchored in the ladder lattice reinforced concrete ring beam on the top of the wall; The horizontal tie bars are arranged in the horizontal mortar joints of the wall, and the horizontal tie bars are tied with the vertical structural bars, and penetrate into the wall for a certain length; the vertical structural bars, the horizontal tie bars, the wall, and the reinforced concrete ring The beams and the floor or roof are firmly connected to form a constrained masonry structure, and the constrained masonry structure of the present invention has good seismic performance.

Description

Confined masonry structure and manufacturing method thereof

technical field

The invention relates to a constrained masonry structure and a manufacturing method thereof, and belongs to a novel masonry structure and a manufacturing method thereof.

Background technique

With the rapid development of my country's rural economy, the construction of villages and towns has set off another round of upsurge after the mid-1980s. However, through the current booming scene of village and town construction, it is not difficult to see that many village and town construction projects in many places still have problems such as many hidden dangers in quality, short service life of housing, and quality accidents occur from time to time. After investigation, it is found that ring beams and structural columns are basically not installed in the current village and town buildings. Even if there are, the cross-sectional size reinforcement is not based on the basis, which is very random and cannot achieve the actual effect that should be achieved. Most floor slabs use prefabricated slabs. When there are no ring beams, the prefabricated slabs are placed directly on the wall, and the penetration into the wall is too small, resulting in poor integrity of the house. Therefore, in previous earthquakes, village and town buildings were often the most severely affected.

The current "Code for Seismic Design of Buildings" has made clear regulations on the setting of ring beams and structural columns of masonry structures. Due to the limitations of economic development, it is unrealistic to put forward requirements for houses in villages and towns in my country in full compliance with the Code for Seismic Design of Buildings. Therefore, it is imminent to study technical measures that are economically reasonable and acceptable to the masses to solve the problems of poor integrity and weak seismic performance of houses in villages and towns.

Contents of the invention

The purpose of the present invention is to provide a new constrained masonry structure with the advantages of simple structure, low cost, convenient construction and good seismic performance, in order to effectively solve the problems of poor integrity and weak seismic capacity of village and town buildings.

The technical scheme that the present invention adopts is as follows:

A constrained masonry structure of the present invention is mainly composed of vertical structural bars, ladder reinforced concrete ring beams and masonry. It is characterized in that: for 240mm thick walls, standard bricks and auxiliary type bricks , The junction of the inner and outer walls is assembled to form a vertical hole, and the vertical structural reinforcement is set at the center of the vertical hole and concrete is poured; for a 370mm thick wall, standard bricks are used to form a vertical hole at the junction of the vertical and horizontal walls and the inner and outer walls. Holes, vertical structural bars are set at the center of the vertical holes and poured with concrete; the lower end of the vertical structural bars is anchored in the foundation beam, and the upper end is anchored in the ladder lattice reinforced concrete ring beam on the top of the wall; the floor or roof is reinforced concrete Floor or reinforced concrete roof or wooden roof; if it is a reinforced concrete floor or reinforced concrete roof, the reinforcement of the floor or roof extends to the ladder reinforced concrete ring beam, and the floor or roof and ladder reinforced concrete Ring beam (integral pouring; if it is a wooden roof, vertical structural reinforcements are arranged at both ends and in the middle of the horizontal wall respectively, and the vertical structural reinforcements pass through the wooden beams of the roof for a certain length and are connected with bolts; in the horizontal mortar joints of the wall Lay out the horizontal tie bars, tie the horizontal tie bars with the vertical structural bars, and go deep into the wall for a certain length; The connections between the covers are firm, constituting a constrained masonry structure, which has good seismic performance.

The standard bricks mentioned above are ordinary bricks, and the specific model is selected according to the engineering needs or local actual conditions. The ordinary bricks are clay bricks sintered from clay, or regenerated bricks made of regenerated concrete aggregates after pressing.

The auxiliary model bricks are made of standard bricks after processing or making moulds, and the materials used can be clay or recycled concrete aggregates.

The recycled concrete aggregate refers to the concrete aggregate mixed with recycled aggregate, including recycled coarse aggregate, or recycled fine aggregate, or both recycled coarse aggregate and recycled fine aggregate; The proportion of some recycled aggregates can be determined according to engineering needs. When the proportion of recycled aggregate is 100%, it is called fully recycled concrete brick; when the recycled aggregate is 0%, it is ordinary concrete brick.

The vertical structural reinforcement is a HRB335 steel bar with a diameter of not less than 25mm, arranged in a vertical hole formed by masonry at the junction of the vertical and horizontal walls and the inner and outer walls, tied with the horizontal tie bars, and anchored at the lower end In the foundation beam, the upper end is anchored in the ladder lattice steel ring beam on the top of the wall.

The diameter of the transverse tie bars is 6mm, and there are no less than 2 pieces, which are arranged every 500mm in the transverse mortar joints of the wall, and the length of each side penetrating into the wall is not less than 750mm.

The vertical hole is located at the junction of the vertical and horizontal walls and the inner and outer walls, and its size is not less than 90mm×90mm, vertically penetrates along the height of the wall, and pours concrete in it to form a core column together with the vertical structural reinforcement. The vertical holes are made of standard bricks and auxiliary model bricks for the 240mm thick wall, and are made of standard bricks for the 370mm thick wall.

The section width of the ladder reinforced concrete ring beam is 120 mm, and the height is 120 mm. Ladder steel bars are arranged along the length of the beam inside the ladder grid reinforced concrete ring beam, and the longitudinal bars of a single-story house are not less than 2 Φ8 ladder steel bars; The longitudinal reinforcement of the house is not less than 2 Φ10 ladder steel bars; the outer side of the ladder reinforced concrete ring beam is made of single-skin bricks, and the inner side is cast with formwork.

The ladder lattice reinforcement is composed of longitudinal reinforcement and horizontal reinforcement; the ladder lattice reinforcement is located at the center of the ladder lattice reinforced concrete ring beam; forming a single row of ladder lattice reinforced concrete ring beams.

The foundation adopts a strip foundation and is built with rubble or clay solid bricks. Hollow blocks or porous bricks should not be used for masonry; when used, the holes should be filled and used.

The foundation beam is a reinforced concrete foundation beam, set on the top of the foundation, its width is not less than the wall thickness, and its height is not less than 100mm. The longitudinal reinforcement of a single-story building is not less than 4Φ10; the longitudinal reinforcement of a two-story building is not less than 4Φ12, and the diameter of the stirrup is not less than Φ8 and the spacing is not greater than 200mm.

A manufacturing method of the above-mentioned constrained masonry structure, its sequence is as follows:

1) Make the foundation, and bind the foundation beam reinforcement on the top of the foundation, pour concrete to form a reinforced concrete foundation beam;

2) Arrange vertical structural reinforcements at the junction of longitudinal and horizontal walls and inner and outer walls, and anchor them in the foundation beams;

3) On the top of the foundation beam, use standard bricks or standard bricks and auxiliary type bricks to build the wall, and set horizontal tie bars in the horizontal mortar joints every 500mm along the wall height, and the horizontal tie bars and vertical structural bars The length of the deep wall is not less than 750mm, and a vertical hole of not less than 90mm×90mm is formed at the junction of the inner and outer walls or the vertical and horizontal walls with vertical structural ribs;

4) When the wall is built to the height of the storey, the ladder reinforcement of the ladder reinforced concrete ring beam is set, and the vertical structural reinforcement is anchored to a certain length in the ladder reinforcement;

5) Binding roof or floor steel bars or hoisting wooden roofs;

6) If it is a reinforced concrete roof or floor, pour vertical structure reinforced concrete, ladder lattice reinforced concrete ring beam concrete and roof or floor concrete to form an integral reinforced concrete roof or floor; if it is a wooden roof, pour After finishing the vertically reinforced concrete, pass the vertically constructed reinforcement through the roof beams and connect them with bolts.

Set vertical structural bars at the joints of interior and exterior walls and longitudinal and horizontal walls. The lower end of the vertical structural bars is anchored in the foundation beam, and the upper end is anchored in the ladder reinforced concrete ring beam. At the same time, the ladder reinforced concrete ring beam is connected to the roof (floor) Integral pouring; at the junction of the inner and outer walls and the vertical and horizontal walls, horizontal tie bars are set every 500mm along the wall height, and the horizontal tie bars are tied with the vertical structural bars, and the length of the penetration into the wall is not less than 750mm. The horizontal tie bars and vertical structural bars set in the wall enhance the integrity of the wall itself. The lower end of the vertical structural reinforcement is anchored in the foundation beam, and the upper end is anchored in the ladder reinforced concrete ring beam; at the same time, if the reinforced concrete roof (floor) and the ladder reinforced concrete ring beam and the concrete in the vertical hole are integrally poured, If it is a wooden roof, the wooden beams of the roof can be connected with vertical structural ribs, which strengthens the connection between the wall and the roof, and enhances the integrity of the structure.

The horizontal tie bars and the vertical structural bars are tied to strengthen the connection of the wall in its own plane and improve the earthquake resistance; the vertical structural bars are anchored in the ladder reinforced concrete ring beams, and the ring beams are connected to the reinforced concrete roof ( The overall pouring of the floor) strengthens the connection between different walls and improves the seismic performance of the structure as a whole.

Description of drawings

Figure 1 is a schematic diagram of standard brick type, auxiliary type brick and vertical hole position;

Fig. 2 is a schematic diagram of vertical structural ribs and their positions;

Figure 3 is a schematic diagram of the reinforcement structure of the foundation beam

Fig. 4 is a schematic diagram of reinforcement and structure of ladder lattice reinforced concrete ring beam;

Figure 5 is the layout of ladder bars

Fig. 6 is a schematic diagram of transverse tie bars;

Figure 7 is the overall schematic diagram of the structure of vertical structural reinforcement and horizontal tie reinforcement

Figure 8 is a schematic diagram of the connection between the wooden roof and the vertical reinforcement

Description of drawings: 1-standard brick; 2, 3-auxiliary type brick; 4-vertical hole; 5-vertical structural reinforcement; 6-foundation beam; 7-ladder reinforced concrete ring beam; ; 9-ladder bars.

Detailed ways

The present invention will be further described below in conjunction with specific embodiment:

As shown in Figures 1-6, a constrained masonry structure of the present invention is mainly composed of vertical structural bars 5, ladder lattice reinforced concrete ring beams 7 and masonry. For a wall with a thickness of 240 mm, a vertical hole 4 is formed by standard brick 1 and auxiliary type bricks 2 and 3 at the junction of the vertical and horizontal walls and the inner and outer walls, and a vertical structural rib 5 is set at the center of the vertical hole 4 and poured with concrete ; For a 370mm thick wall, a vertical hole 4 is formed by standard bricks 1 at the junction of the vertical and horizontal walls and the inner and outer walls, and a vertical structural reinforcement 5 is set at the center of the vertical hole 4 and concrete is poured; the vertical structural reinforcement 5 The lower end is anchored in the foundation beam 6, and the upper end is anchored in the ladder lattice reinforced concrete ring beam 7 on the top of the wall; the floor or roof is a reinforced concrete floor or a reinforced concrete roof or a wooden roof; if it is a reinforced concrete floor or a reinforced concrete The roof, the floor or the roof reinforcement extends into the ladder lattice reinforced concrete ring beam 7, and the floor or roof and the ladder lattice reinforced concrete ring beam 7 are poured integrally; if it is a wooden roof, separate Vertical structural ribs 5 are provided, and the vertical structural ribs 5 pass through the wooden beams of the roof for a certain length, and are connected with bolts; horizontal tie bars 8 are arranged in the horizontal mortar joints of the wall, and the horizontal tie bars 8 are connected with the vertical structural bars. 5 tie, and go deep into the wall to a certain length; the vertical structural reinforcement 5, the horizontal tie reinforcement 8, the wall, the ladder lattice reinforced concrete ring beam 7, and the floor or roof are firmly connected to form a constrained masonry structure , has good shock resistance.

The standard brick 1 and the auxiliary model bricks 2 and 3 are ordinary bricks, and the specific models are selected according to the needs of the project or the actual local conditions. Sintered clay bricks. The vertical structural bars 5 are IIRB335 steel bars with a diameter of not less than 25mm, and the transverse tie bars 8 have a diameter of 6mm and are not less than 2, which are arranged at intervals of about 500mm in the transverse mortar joints of the wall, and each side goes deep into the wall The length inside is not less than 750mm. The size of the vertical hole 4 is not less than 90mm×90mm, vertically penetrates along the height of the wall, and concrete is poured in it to form a core column together with the vertical structural rib 5 . The vertical hole 4 is formed by standard bricks and auxiliary model bricks for the 240mm thick wall body, and is formed by standard bricks for the 370mm thick wall body. The section width of the ladder reinforced concrete ring beam 7 is 120 mm, and the height is 120 mm. The ladder reinforced concrete ring beam 7 is provided with ladder bars 9 along the length of the beam. The outer side of the ladder reinforced concrete ring beam 7 is made of single skin bricks. formwork pouring. Ladder reinforcement bars 9 are made of 90-degree hooks at both ends of the longitudinal bars, and the length of the hooks is 60mm; the ladder reinforcement bars 9 are located at the center of the ladder lattice reinforced concrete ring beam 7; forming a single row of ladder lattice reinforced concrete ring beams. The foundation adopts a strip foundation and is built with rubble. The foundation beam 6 is a reinforced concrete foundation beam, which is arranged on the top of the foundation, and its width is not less than the wall thickness, and its height is not less than 100mm.

The specific manufacturing method of the above-mentioned constrained masonry structure is as follows:

1) Make the foundation, and bind the foundation beam reinforcement at the top of the foundation, and pour concrete to form the reinforced concrete foundation beam 6;

2) Arrange vertical structural ribs 5 at the junction of the vertical and horizontal walls and the inner and outer walls, and anchor them in the foundation beam 6;

3) On the top of the foundation beam 6, use standard brick 1 or use standard brick 1 and auxiliary type bricks 2 and 3 to build the wall, and set horizontal tie ribs 8 in the horizontal mortar joints every 500 mm along the wall height, and horizontal tie bars 8 The ribs 8 and the vertical structural ribs 5 are tied, and the length of the penetration into the wall is not less than 750mm, and a vertical hole of not less than 90mm×90mm is formed at the junction of the inner and outer walls or the vertical and horizontal walls with the vertical structural ribs 5;

4) Masonry the wall to the storey height, set the ladder bars 9 of the ladder reinforced concrete ring beam 7, and the vertical structural bars 5 are anchored in the ladder bars 9 for a certain length;

5) Binding roof or floor steel bars or hoisting wooden roofs;

6) If it is a reinforced concrete roof or floor, pour vertical structure reinforced concrete, ladder lattice reinforced concrete ring beam concrete and roof or floor concrete to form an integral reinforced concrete roof or floor; if it is a wooden roof, pour After finishing the vertically constructed reinforced concrete, pass the vertically constructed reinforced 5 through the roof wooden beams and connect them with bolts.

The above is a typical embodiment of the present invention, and the practice of the present invention is not limited thereto.

Claims (6)

1. A constrained masonry structure, which is mainly composed of vertical structural bars (5), ladder reinforced concrete ring beams (7) and masonry, is characterized in that: for a 240mm thick wall, the standard brick (1 ) and auxiliary model bricks (2, 3) are assembled to form a vertical hole (4) at the junction of the vertical and horizontal walls, inner and outer walls, and a vertical structural reinforcement (5) is set at the center of the vertical hole (4) and poured with concrete; For a wall with a thickness of 370 mm, a vertical hole (4) is formed by standard bricks (1) at the junction of the vertical and horizontal walls and the inner and outer walls, and a vertical structural rib (5) is placed at the center of the vertical hole (4) and poured with Concrete; the lower end of the vertical structural bar (5) is anchored in the foundation beam (6), and the upper end is anchored in the ladder lattice reinforced concrete ring beam (7) on the top of the wall; the floor or roof is a reinforced concrete floor or a reinforced concrete roof or wooden roof; if it is a reinforced concrete floor or a reinforced concrete roof, the reinforcement of the floor or roof extends to the ladder lattice reinforced concrete ring beam (7), and the floor or roof and the ladder lattice reinforced concrete ring beam (7) ) overall pouring, the section width of the ladder reinforced concrete ring beam (7) is 120mm, and the height is 120mm, and the ladder reinforced concrete ring beam (7) is provided with ladder bars (9) along the length of the beam, and the ladder reinforced concrete The outer side of the ring beam (7) is made of single-skin bricks, and the inner side is cast with formwork. The ladder bar (9) is composed of longitudinal bars and horizontal bars; ) center; form a single row of ladder grid reinforced concrete ring beams; if it is a wooden roof, vertical structural ribs (5) are respectively arranged at both ends and in the middle of the transverse wall, and the vertical structural ribs (5) pass through the wooden beams of the roof a certain length, and connected with bolts; the horizontal tie bars (8) are arranged in the horizontal mortar joints of the wall, and the horizontal tie bars (8) are tied with the vertical structural bars (5), and penetrated into the wall for a certain length; The vertical structural bars (5) are HRB335 steel bars with a diameter of not less than 25 mm, and the horizontal tie bars (8) have a diameter of 6 mm, and there are no less than 2 bars, which are placed every 500 mm or so in the transverse mortar joints of the wall. layout, and the length of each side deep into the wall is not less than 750mm; between vertical structural reinforcement (5), horizontal tie reinforcement (8), wall, ladder reinforced concrete ring beam (7) and floor or roof The connections are firm and constitute a constrained masonry structure. 2. The constrained masonry structure according to claim 1, characterized in that: said standard bricks (1) and auxiliary model bricks (2, 3) are ordinary bricks, and the specific models are selected according to engineering needs or local actual conditions, The ordinary brick is a clay brick made by sintering clay, or a recycled brick made of recycled concrete aggregate after pressing. 3. The constrained masonry structure according to claim 1, characterized in that: the size of the vertical hole (4) is not less than 90mm×90mm, vertically penetrates along the wall height and pours concrete and vertical structural reinforcement ( 5) Together to form a stem. 4. The constrained masonry structure according to claim 1, characterized in that: the foundation adopts a strip foundation and is built with rubble or clay solid bricks. 5. The constrained masonry structure according to claim 1, characterized in that: the foundation beam (6) is a reinforced concrete foundation beam, set on the top of the foundation, its width is not less than the wall thickness, and its height is not less than 100mm. 6. A method for manufacturing a constrained masonry structure according to any one of claims 1-5, wherein the sequence is as follows: 1) making the foundation, and binding the foundation beam steel bar at the top of the foundation, pouring concrete to form a reinforced concrete foundation beam (6); 2) Arrange vertical structural reinforcement (5) at the junction of the longitudinal and horizontal walls and the inner and outer walls, and anchor them in the foundation beam (6); 3) On the top of the foundation beam (6), use standard bricks (1) or standard bricks (1) and auxiliary type bricks (2, 3) to build the wall, and set horizontal mortar joints every 500mm along the wall height. The tie bars (8), the horizontal tie bars (8) and the vertical structural bars (5) are tied, and the length of the penetration into the wall is not less than 750mm, and the inner and outer walls or vertical and horizontal bars with vertical structural bars (5) A vertical hole not less than 90mm×90mm is formed at the junction of the wall; 4) Masonry the wall to the storey height, set the ladder bars (9) of the ladder reinforced concrete ring beam (7), and the vertical structural bars (5) are anchored in the ladder bars (9) for a certain length; 5) Binding roof or floor steel bars or hoisting wooden roofs; 6) If it is a reinforced concrete roof or floor, pour vertical structure reinforced concrete, ladder lattice reinforced concrete ring beam concrete and roof or floor concrete to form an integral reinforced concrete roof or floor; if it is a wooden roof, pour After vertically constructing the reinforced concrete, pass the vertical constructing reinforcement (5) through the roof wooden beams and connect them with bolts.

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