CN208168422U - A kind of mixed form combination beam underpinning structure of the brick suitable for existing building building reconstruction - Google Patents

Abstract

The utility model discloses a brick-concrete composite beam underpinning structure suitable for the renovation of existing buildings, and relates to the technical field of building underpinning structures. Due to the effect of structural glue, the brick masonry beam can effectively prevent the combination of side steel plates The local buckling and overall instability of the components increase the stiffness of the composite beams and columns; on the one hand, the side steel plates can provide higher tensile and compressive bearing capacity, and on the other hand, they can restrain the brick masonry beams to improve the mechanical performance The steering structure arranged at the bottom can adjust the structural load form, optimize the structural bearing capacity, and give full play to the high-strength tensile performance of the reinforcement; the prestressed steel strand can improve the overall stiffness of the composite beam and reduce its deformation; the utility model has a simple structure , The structure is reasonable, can effectively improve the ultimate bearing capacity and seismic performance of the original building, and does not need to demolish and rebuild the original building, which is convenient for construction and reduces costs.

Description

A brick-concrete composite beam underpinning structure suitable for renovation of existing buildings

technical field

The utility model relates to the technical field of building underpinning structures, in particular to a brick-concrete composite beam underpinning structure suitable for renovation of existing buildings.

Background technique

From the 1950s to the 1980s in our country, masonry structures occupied a dominant position, but with the development of the economy, people have greatly improved the use of space and functions of buildings. Some old brick-concrete structures in China Often the buildings are old, and the bays and depths of houses are relatively small, which can no longer meet people's living requirements. Demolition and reconstruction and reinforcement of the original buildings are the two most effective ways to solve this problem. Funding and other aspects of the problem, but also will produce a large amount of construction waste to pollute the environment. Compared with demolition and reconstruction, structural reinforcement and reconstruction of the original buildings can obtain better use functions and environmental protection value with less investment.

The existing brick-concrete composite beam underpinning structure suitable for the renovation of existing buildings is prone to accidents due to the poor bearing capacity of the original old buildings, and the operation steps are cumbersome, making it inconvenient to carry out construction.

Utility model content

The purpose of this utility model is to provide a brick-concrete composite beam underpinning structure suitable for the renovation of existing buildings and houses, so as to solve the problems raised in the above-mentioned background technology.

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

A brick-concrete composite beam underpinning structure suitable for renovation of existing buildings, comprising brick beams, the two sides of the brick beams are respectively fixedly connected with side steel plates, and the bottom of the brick beams are fixedly connected at intervals There are bottom steel plates, the two ends of the side steel plates are fixedly connected with steel frames, and the two steel frames on the same side are anchored with prestressed steel strands through anchors. The lower part of the bottom steel plate is provided with a steering structure, and the prestressed steel strands The line passes through the lower surface of the steering structure, and the upper surface of the brick masonry beam is poured with a concrete structure.

As a further solution of the present invention: both the side steel plates and the bottom steel plates are fixed to the brick masonry beams by a number of pull bolts.

As a further solution of the present invention: the specification of the pull bolts is M16.

As a further solution of the present invention: the gap between the side steel plate and the brick masonry beam is filled with structural glue.

As a further solution of the utility model: the steering structure is a cylinder.

As a further solution of the utility model: the column is a steel pipe or a PE pipe lined with a steel pipe.

As a further solution of the present invention: the pouring width of the concrete structure is the same as that of the brick masonry beam.

As a further solution of the utility model: the thickness of the side steel plate is less than 5mm, and the model is Q235 steel.

As a further solution of the present invention: the prestressed steel strand is an unbonded steel strand.

As a further solution of the utility model: the specification of the prestressed steel strand adopts φs15.2mm.

Compared with the prior art, the beneficial effects of the utility model are:

1. Due to the effect of structural glue, the brick masonry beam can effectively prevent local buckling and overall instability of the side steel plate composite member, and improve the stiffness of the composite beam and column;

2. On the one hand, the side steel plate can provide high tensile and compressive bearing capacity, and on the other hand, it can restrain the brick masonry beam to improve the mechanical performance;

3. The steering structure set at the bottom can adjust the structural load form, optimize the structural bearing capacity, and give full play to the high-strength tensile performance of the tendons;

4. The prestressed steel strand can improve the overall stiffness of the composite beam and reduce its deformation;

5. The utility model has a simple and reasonable structure, can effectively improve the ultimate bearing capacity and seismic performance of the original building, and does not need to dismantle and rebuild the original building, which is convenient for construction and reduces costs.

Description of drawings

Fig. 1 is a kind of three-dimensional structural schematic diagram of the brick-concrete form composite beam underpinning structure suitable for the renovation of existing buildings;

Fig. 2 is the schematic diagram of the front view of the brick-concrete form composite beam underpinning structure applicable to the transformation of existing building houses described in Fig. 1;

Fig. 3 is a schematic left view of the brick-concrete composite beam underpinning structure suitable for renovation of existing buildings described in Fig. 1 .

Detailed ways

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Figures 1-3, a brick-concrete composite beam underpinning structure suitable for renovation of existing buildings, including a brick masonry beam 1, the two sides of the brick masonry beam 1 are respectively fixedly connected with side steel plates 2 , the bottom of the brick masonry beam 1 is fixedly connected to the bottom steel plate 6 at intervals, and the two ends of the side steel plate 2 are respectively fixedly connected to the steel frame 3, and the two steel frames 3 on the same side are anchored with prestressed steel strands 5 , the lower part of the bottom steel plate 6 is provided with a steering structure 8, the prestressed steel strand 5 passes through the lower surface of the steering structure 8, and the upper surface of the brick masonry beam 1 is poured with a concrete structure. Both the side steel plate 2 and the bottom steel plate 6 are fixed to the brick masonry beam 1 by a plurality of pull bolts 7 . The specifications of the pull bolts 7 are M16. The gap between the side steel plate 2 and the brick masonry beam 1 is filled with structural glue. The steering structure 8 is a cylinder. The column is steel pipe or PE pipe lined with steel pipe. The pouring width of the concrete structure is the same as that of the brick masonry beam 1 . The thickness of the side steel plate 2 is less than 5mm, and the model is Q235 steel. The prestressed steel strand 5 is an unbonded steel strand, and the specification of the prestressed steel strand 5 adopts φs15.2mm.

The working principle of the utility model is: the brick masonry beam 1 and the side steel plate 2 are bonded by the structural glue poured in the gap between the two, and the brick masonry beam 1 can effectively prevent the local buckling and overall failure of the side steel plate 2 composite member. stable, which improves the rigidity of composite beams and columns; on the one hand, the side steel plate 2 can provide higher tensile and compressive bearing capacity; Structure 8 can adjust the structural load form, optimize the structural bearing capacity, and give full play to the high-strength tensile performance of the tendons; the prestressed steel strand can improve the overall stiffness of the composite beam and reduce its deformation; the utility model has a simple structure and a reasonable structure. It can effectively improve the ultimate bearing capacity and anti-seismic performance of the original building, and does not need to demolish and rebuild the original building, which facilitates construction and reduces costs.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "setting", "connecting" and "connecting" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. a kind of brick suitable for existing building building reconstruction mixes form combination beam underpinning structure, including brick setting beam, feature It is, the two sides of the brick setting beam have been respectively fixedly connected with side steel plate, and the bottom interval of brick setting beam is fixedly connected with The both ends of bottom surface steel plate, side steel plate have been respectively fixedly connected with steelframe, on two ipsilateral steelframes by anchorage anchoring have it is pre- Prestress steel strand, the lower part of the bottom surface steel plate are provided with steering structure, and prestress wire passes through the lower surface of steering structure, The upper surface of the brick setting beam has poured concrete structure.

2. the brick according to claim 1 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the side steel plate and bottom surface steel plate pass through several split bolts and mutually fix with brick setting beam.

3. the brick according to claim 2 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the specification of the split bolt is M16.

4. the brick according to claim 1 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the gap filling between the side steel plate and brick setting beam has structure glue.

5. the brick according to claim 1 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the steering structure is cylinder.

6. the brick according to claim 5 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the cylinder is the PE pipe of steel pipe or lined steel pipe.

7. the brick according to claim 1 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is, the concrete structure pours the of same size of width and brick setting beam.

8. the brick according to claim 1 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the thickness of the side steel plate is less than 5mm, model Q235 steel.

9. the brick according to claim 1 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the prestress wire is soap-free emulsion polymeization steel strand.

10. the brick according to claim 1 suitable for existing building building reconstruction mixes form combination beam underpinning structure, special Sign is that the specification of the prestress wire uses φ s15.2mm.