Concrete pin key reinforcement structure for bottom of existing building brick foundation

Abstract

This utility model relates to the reinforcement structure of existing brick buildings, belonging to the field of building engineering technology. Specifically, it is a concrete pin reinforcement structure for the bottom of existing brick foundations, including newly added concrete pins and a load-bearing brick wall. Multiple newly added concrete pins are provided and are fixedly installed on the load-bearing brick wall. It also includes a concrete cushion layer, which is fixedly installed at the bottom of the newly added concrete pins. This utility model achieves the effects of short construction period, convenient construction, and low cost. It solves the problems of easy cracking of ordinary concrete and incoordination with brick masonry deformation in existing construction methods. In addition, the pin anchorage is weak, the longitudinal reinforcement is discontinuous, and the load-bearing capacity is not strong.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to the concrete pin-key reinforcement structure at the bottom of existing building brick foundations. Background Technology

[0002] Buildings with existing masonry wall foundations can no longer meet people's needs, and in earthquakes, buildings with poor seismic performance and masonry wall foundations threaten people's lives and property.

[0003] A search revealed Chinese patent CN208415983U, which discloses a partial reinforcement structure for brick masonry walls, comprising an existing wall surface, keyways, reinforcing mesh, longitudinal reinforcement, and a surface layer. The existing wall surface is the original brick masonry structure. The keyways are positioning components laid in grooves on both sides of the existing wall surface. The reinforcing mesh is a steel reinforcement structure laid on the outer surface of the existing wall surface. The longitudinal reinforcement is high-strength long steel bars laid on both sides of the existing wall surface. The surface layer is concrete mortar poured onto the existing wall surface, covering the keyways, reinforcing mesh, and longitudinal reinforcement. This utility model of a partial reinforcement structure for brick masonry walls can enhance the shear resistance and safety of the brick masonry wall structure without damaging the original building structure, and it is simple to construct and inexpensive.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The aforementioned patents use ordinary concrete, which is prone to cracking and does not conform to the deformation of brick masonry. In addition, the pin anchorage is weak, the longitudinal reinforcement has discontinuous force transmission, and the load-bearing capacity is not strong, thus having certain limitations. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model proposes a concrete pin-key reinforcement structure for the bottom of existing building brick foundations, which has a short construction period, convenient construction, low cost, and certain economic benefits.

[0007] The technical solution to achieve the purpose of this utility model is: a concrete pin reinforcement structure for the bottom of existing building brick foundation, including new concrete pins and load-bearing brick wall, wherein multiple new concrete pins are provided and the new concrete pins are fixedly installed on the load-bearing brick wall, and a concrete pad layer is also included.

[0008] The concrete pad is fixedly installed at the bottom of the newly added concrete key.

[0009] Preferably, the newly added concrete pin key has multiple main reinforcing bars fixedly installed inside.

[0010] Preferably, each of the main reinforcing bars is welded with multiple anchor bars, and stirrups are fixedly installed between the main reinforcing bars and the anchor bars.

[0011] Compared with existing technologies, the significant advantages of this invention are:

[0012] Firstly, this utility model can improve the compressive bearing capacity of masonry wall foundations without damaging the original structure, and it has a simple structure, is easy to construct, and has a low cost.

[0013] Secondly, this utility model improves the overall integrity and collapse resistance of the building structure, enabling it to be used for a long time. It not only ensures long-term use but also provides excellent stability to existing buildings.

[0014] This method solves the problems of existing construction methods, such as the easy cracking of ordinary concrete, incompatibility with the deformation of brick masonry, weak pin anchorage, discontinuous force transmission of longitudinal reinforcement, and weak load-bearing capacity. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the planar structure provided in one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the reinforced node structure provided in two embodiments of the present invention;

[0018] Figure 3 This is a side view cross-sectional structural diagram of the reinforced node provided in two embodiments of this utility model;

[0019] Figure 4 This is a top view cross-sectional structural diagram of the reinforced node provided in two embodiments of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. New concrete keyway; 2. Load-bearing brick wall; 3. Concrete foundation; 4. Main reinforcement; 5. Rebar installation; 6. Stirrups. Detailed Implementation

[0022] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0023] This utility model provides an improved concrete pin-key reinforcement structure for the bottom of existing building brick foundations. The technical solution of this utility model is as follows:

[0024] Example 1

[0025] like Figure 1 As shown, the existing building brick foundation bottom concrete pin reinforcement structure includes a newly added concrete pin 1 and a load-bearing brick wall 2. Multiple newly added concrete pins 1 are provided and are fixedly installed on the load-bearing brick wall 2 to improve the compressive bearing capacity of the masonry wall foundation. It also includes a concrete cushion layer 3.

[0026] The concrete cushion layer 3 is fixedly installed at the bottom of the newly added concrete pin 1, which has a good stabilizing effect on the existing building.

[0027] Example 2:

[0028] Based on the concrete pin-key reinforcement structure for the bottom of existing building brick foundations provided in the first embodiment of this application, the second embodiment of this application proposes another concrete pin-key reinforcement structure for the bottom of existing building brick foundations. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0029] The second embodiment of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0030] like Figure 2-4 As shown, the newly added concrete pin 1 has multiple main reinforcing bars 4 fixedly installed inside, which is simple in structure, facilitates rapid construction, and shortens the construction period.

[0031] Furthermore, multiple reinforcing bars 5 are welded to each main reinforcing bar 4, and stirrups 6 are fixedly installed between the main reinforcing bars 4 and the reinforcing bars 5, which improves the overall integrity and anti-collapse ability of the building structure and enables it to be used for a long time.

[0032] The specific working method is as follows: The thickness of the concrete cushion layer 3 is 120mm, and the strength grade is C20; the structural thickness of the load-bearing brick wall 2 is 490mm, and the strength grade is MU15; the new main reinforcement 4 is added by chiseling a 500mm high wall hole at the bottom of the existing masonry wall, with the width being the same as the wall width, and placing the main reinforcement 4, which is made of C18 material. At the same time as placing the main reinforcement 4, weld the anchor reinforcement 5. The anchor reinforcement 5 reinforces the load-bearing brick wall 2 and the new concrete key 1. Stirrups 6 are placed, with the specification of C12 and the spacing of 100mm. The main reinforcement 4 and the anchor reinforcement 5 are tied inside the stirrups 6. After the reinforcement is tied, wooden formwork is erected, and PVC grouting pipes are pre-embedded in the formwork for later grouting. Self-compacting micro-expansion concrete is used, poured in layers, and compacted by insertion vibration. The strength grade of the new concrete key 1 is C40.

[0033] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A concrete pin-supported structure for reinforcing the bottom of an existing building's brick foundation, comprising a newly added concrete pin (1) and a load-bearing brick wall (2), characterized in that: The newly added concrete pins (1) are provided in multiple ways, and the newly added concrete pins (1) are fixedly installed on the load-bearing brick wall (2), and also include; A concrete cushion layer (3) is fixedly installed at the bottom of the newly added concrete pin (1).

2. The concrete pin-key reinforcement structure for the bottom of existing building brick foundations according to claim 1, characterized in that: The newly added concrete key (1) has multiple main reinforcement bars (4) fixedly installed inside.

3. The concrete pin-key reinforcement structure for the bottom of existing building brick foundations according to claim 2, characterized in that: Each of the main reinforcing bars (4) is welded with multiple anchor bars (5), and stirrups (6) are fixedly installed between the main reinforcing bars (4) and the anchor bars (5).

Images