Structure and construction method of intersection of new wall and existing wall corner

Abstract

The application relates to a structure and a construction method for the intersection of a new wall and an existing wall, which comprises an existing wall, a new wall vertically fixed to the existing wall, a construction column fixed to the end of the existing wall and the side of the new wall, a first tie member tied to the existing wall and the new wall, and a second tie member tied to the construction column, the new wall and the existing wall. A third tie member is tied between the construction column and the existing wall. The application solves the technical problem of the complex reinforcement structure and construction method in the prior art when the intersection of the new and old walls is constructed. The application adds tie rods, tie steel bars and other reinforcement methods at the intersection of the end of the new wall and the existing wall, enhances the integrity and the anti-seismic performance of the new and old walls without damaging the structure of the existing wall, and is simple in construction and high in efficiency.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a structure and construction method for the intersection of a new wall and an existing wall at a corner. Background Technology

[0002] With the acceleration of urbanization, many existing buildings have not yet reached their service life, but their performance indicators are insufficient to meet the basic requirements of various new working or living conditions, posing safety hazards. Demolition and reconstruction or new construction are time-consuming and expensive. Appropriate reinforcement measures are needed for some buildings to enhance their structural load-bearing capacity and improve overall stability, which can significantly reduce material and labor costs, shorten construction time, and lower costs. However, existing reinforcement measures are complex in terms of reinforcement structures and construction methods when working at the corners where new and old walls intersect, leading to longer construction periods and higher costs. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention provides a structure and construction method for the intersection of a new wall and an existing wall at the corner, solving the technical problem of complex reinforcement structures and construction methods when constructing the corner where new and old walls intersect.

[0004] In a first aspect, the present invention discloses a structure at the corner where a new wall and an existing wall intersect, comprising an existing wall, a new wall vertically fixed to the existing wall, a structural column fixed to the end of the existing wall and the side of the new wall, a first tie member connecting the existing wall and the new wall, and a second tie member connecting the structural column, the new wall and the existing masonry wall.

[0005] The structure at the intersection of the newly added wall and the existing wall is further improved in that a third tie member is connected between the structural column and the existing wall.

[0006] The further improvement of the structure at the corner where the newly added wall intersects with the existing wall is that the number of the third tie members is multiple, and these multiple third tie members are evenly spaced along the vertical direction. The number of the first tie members is also multiple, and these multiple first tie members are evenly spaced along the vertical direction.

[0007] The further improvement of the structure at the intersection of the newly added wall and the existing wall corner of the present invention is that the number of the first tie members is multiple sets, and the multiple sets of the first tie members are evenly spaced along the vertical direction.

[0008] The structure at the intersection of the new wall and the existing wall in this invention is further improved in that the first connecting member is a connecting screw, the first end of the connecting screw has a hook and is anchored inside the new wall, the second end of the connecting screw is screwed with a nut, and a washer is provided on the connecting screw between the nut and the existing wall.

[0009] The structure at the intersection of the new wall and the existing wall in this invention is further improved in that the existing wall has a groove for accommodating the end of the tie rod, the pad and the nut, and the groove is filled with cement mortar.

[0010] The further improvement of the structure at the intersection of the newly added wall and the existing wall corner of the present invention is that the number of the second tie members is multiple, and the multiple second tie members are evenly spaced along the vertical direction.

[0011] The structure at the intersection of the new wall and the existing wall in this invention is further improved in that the second tie member is a steel bar, the first end of which forms a first bent section and is anchored in the structural column, and the second end of which passes through the new wall to the inside of the existing wall and forms a second bent section and is anchored in the inside of the existing wall.

[0012] The structure at the intersection of the newly added wall and the existing wall is further improved in that the existing wall has a slot, the bent section is located in the slot, and the slot is filled with concrete.

[0013] Secondly, the present invention also provides a construction method for the structure at the intersection of a new wall and an existing wall at a corner as described above, comprising the following steps: installing a first tie member in the existing wall and extending the first tie member to the location of the new wall to be constructed; binding the reinforcing bars of the structural column, fixing the second tie member to the reinforcing bars of the structural column, and having the second tie member pass through the location of the new wall to be constructed and anchored to the existing wall; constructing the new wall, anchoring the first tie member and the second tie member inside the new wall; and casting the structural column, anchoring the second tie member inside the structural column.

[0014] Compared with existing technologies, the effects of this invention are positive and significant. This invention solves the technical problem of complex reinforcement structures and construction methods at the intersection of old and new walls in existing technologies by setting structural columns and tie rods between the existing and new walls. This invention enhances the integrity and seismic performance of the old and new walls without damaging the existing wall structure by adding tie rods and reinforcing bars at the intersection of the new and existing walls, and is simple and efficient to construct. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of the structure at the corner where the newly added wall and the existing wall intersect in this invention.

[0017] Figure 2 for Figure 1 Sectional view along line AA.

[0018] Figure 3 for Figure 1 Sectional view along the BB line. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 scope of protection of the present invention.

[0020] like Figures 1-3 As shown, the present invention provides a structure at the corner where a new wall 2 intersects with an existing wall 1, including an existing wall 1, a new wall 2 vertically fixed to the existing wall 1, a structural column 3 fixed to the end of the existing wall 1 and the side of the new wall 2, a first tie member 4 connecting the existing wall 1 and the new wall 2, and a second tie member 5 connecting the structural column 3, the new wall 2, and the existing masonry wall. In this embodiment, the new wall 2 is a brick masonry wall with a thickness of 240mm, and the masonry material is porous concrete bricks. The structural column 3 is a reinforced concrete structure with a concrete strength grade of C25, and the existing wall 1 has a thickness of 240mm.

[0021] Preferably, a third tie member 6 is provided between the structural column 3 and the existing wall 1. The third tie member 6 is a steel bar, which is anchored in the structural column 3 and the existing wall 1 by means of rebar installation. One end of the third tie bar has a bend and is anchored in the structural column 3, and the other end is a straight section with a length of not less than 350mm.

[0022] Preferably, there are multiple third tie members 6, which are evenly spaced along the vertical direction, so that the structural column 3 can apply a tie force evenly to the existing wall 1.

[0023] Preferably, the number of the first tie members 4 is multiple sets, and the multiple sets of the first tie members 4 are evenly spaced along the vertical direction, so that the new wall 2 can apply a tie force evenly to the existing wall 1.

[0024] Preferably, the first connecting member 4 is a connecting bolt. The first end of the connecting bolt has a hook and is anchored inside the new wall 2. The second end of the connecting bolt is screwed with a nut. A washer 7 is inserted through the connecting bolt between the nut and the existing wall 1. The washer 7 is a 120mm × 8mm (length × width) steel washer 7 used to fix the connecting bolt and to strengthen the connection between the new wall 2 and the existing wall 1.

[0025] Preferred, such as Figure 1 and Figure 2 As shown, the existing wall 1 has a groove for accommodating the end of the tie rod, the pad 7, and the nut, and the groove is filled with cement mortar 8. Each group of first tie rods contains at least two tie rods. In this embodiment, the groove is 150×150×30 mm in length, width, and thickness, and has two D25 (25 mm in diameter) drill holes 10 with a center-to-center distance of 150 mm. Each group of first tie rods contains two tie rods, which pass through the drill holes 10 into the existing wall 1 and are connected to the new wall 2 by the nut on the pad 7.

[0026] Preferably, there are multiple second tie members 5, which are evenly spaced along the vertical direction to ensure a uniform tie force is applied to the existing wall 1 between the structural column 3, the new wall 2, and the existing wall 1. The vertical spacing of the second tie members 5 does not exceed 1 / 3 of the story height. Figure 3 As shown, the second tie members 5 are distributed between the two floor slabs 11. They are used to enhance the integrity between the newly added structural column 3 and the existing wall 1.

[0027] Preferred, such as Figure 1 and Figure 3 As shown, the second tie member 5 is a steel bar. The first end of the steel bar forms a first bend and is anchored inside the structural column 3. The second end of the steel bar passes through the newly added wall 2 to the inside of the existing wall 1 and forms a second bend and is anchored inside the existing wall 1. The length of both the first and second bends is not less than 120mm, and the bending directions at both ends are perpendicular.

[0028] Preferably, the existing wall 1 has a slot 9, the bent section is located in the slot 9, and the slot 9 is filled with concrete, so as to ensure that the bent section is firmly fixed to the existing wall 1.

[0029] On the other hand, the present invention also provides a construction method for the structure at the corner where the new wall 2 intersects with the existing wall 1 as described above, comprising the following steps: installing a first tie member 4 inside the existing wall 1 and extending the first tie member 4 to the position of the new wall 2 to be constructed; binding the reinforcing bars of the structural column 3, fixing the second tie member 5 to the reinforcing bars of the structural column 3, and making the second tie member 5 pass through the position of the new wall 2 to be constructed and anchored to the existing wall 1; constructing the new wall 2, so that the first tie member 4 and the second tie member 5 are anchored inside the new wall 2; and pouring the structural column 3, so that the second tie member 5 is anchored inside the structural column 3.

[0030] Specifically, during construction, a 150×150×30mm groove is cut at the end of the existing brick wall to place and fix the steel pad 7. Two D25 holes are drilled in the groove, and then tie rods are installed, passing through the holes into the wall and extending into the new brick wall for a length of not less than 500mm, with a vertical spacing of no more than 500mm. Then, the ends of the tie rods pass through the steel pad 7 and are fixed with bolts. Finally, the groove is smoothed with 1:3 cement mortar 8.

[0031] The reinforcing bars of the newly added structural column 3 are tied. During the tying process, the second tie member 5 is tied into the structural column 3, with the first bend of the second tie member 5 facing downwards. The other side of the tie bar with bends at both ends is bent and anchored into the reserved opening in the existing wall 1. The reserved opening size is not less than 120×120×180 (180mm is the reserved hole depth). The second bend of the second tie member 5 is horizontal. The reserved opening is finally filled with C20 grade concrete. The straight section length of the second tie member 5 is not less than 500mm. The third tie member 6 is implanted into the existing wall 1 using a rebar anchoring method, with an anchoring depth of not less than 120mm. The straight section length of the third tie member 6 is not less than 350mm.

[0032] After the tie rods, second tie member 5, and third tie member 6 are installed, the construction of the new wall 2 is carried out. The thickness of the new brick masonry wall is 240mm, and the masonry material is porous concrete bricks. When constructing the new wall 2, the tie rods are embedded inside the wall.

[0033] New reinforced concrete structural columns are installed at the intersection of the newly added brick masonry wall and the existing brick masonry wall. Before the concrete is poured for the structural columns, a pull-out test must be conducted on the third tie member installed by the rebar anchoring method. Only after the test is passed and the reinforcement of the structural columns is accepted can the formwork be erected and the concrete poured.

[0034] This invention solves the technical problem of complex structural reinforcement and construction methods at the intersection of old and new walls in existing technologies by installing structural columns and tie rods between existing and newly constructed walls. The invention enhances the integrity and seismic performance of both old and new walls without damaging the existing structure by adding tie rods and reinforcing bars at the intersection of the new and existing walls. The construction is simple and efficient. Using this method, construction is simple, the construction period is short, and the cost is low. It allows for the reinforcement and renovation of existing structures without demolition or damage, improving the load-bearing capacity and overall stability of the building, and extending its service life. This not only improves the safety performance of buildings but also saves significant maintenance and reconstruction costs, and can also be used to protect urban historical buildings and cultural heritage.

[0035] All parts not described in this invention are the same as or can be implemented using existing technologies. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, shall still fall within the scope of the present invention.

Claims

1. A structure at the corner where a new wall intersects with an existing wall, characterized in that, It includes an existing wall, a new wall vertically fixed to the existing wall, a structural column fixed to the end of the existing wall and the side of the new wall, a first tie member connecting the existing wall and the new wall, and a second tie member connecting the structural column, the new wall and the existing wall.

2. The structure at the corner where the new wall intersects with the existing wall according to claim 1, characterized in that, A third tie member connects the structural column to the existing wall.

3. The structure at the corner where the new wall intersects with the existing wall according to claim 2, characterized in that, The number of the third tie members is multiple, and the multiple third tie members are evenly spaced vertically.

4. The structure at the corner where the new wall intersects with the existing wall according to claim 1, characterized in that, The number of the first tie members is multiple sets, and the multiple sets of the first tie members are evenly spaced along the vertical direction.

5. The structure at the corner where the new wall intersects with the existing wall according to claim 1, characterized in that, The first connecting member is a connecting screw rod. The first end of the connecting screw rod has a hook and is anchored inside the new wall. The second end of the connecting screw rod is screwed with a nut. A pad is provided on the connecting screw rod between the nut and the existing wall.

6. The structure at the corner where the new wall intersects with the existing wall according to claim 5, characterized in that, The existing wall has a groove for accommodating the end of the tie rod, the pad, and the nut, and the groove is filled with cement mortar.

7. The structure at the corner where the new wall intersects with the existing wall according to claim 1, characterized in that, The number of the second tie members is multiple, and the multiple second tie members are evenly spaced along the vertical direction.

8. The structure at the corner where the new wall intersects with the existing wall according to claim 1, characterized in that, The second tie member is a steel bar. The first end of the steel bar has a first bend and is anchored in the structural column. The second end of the steel bar passes through the newly added wall to the inside of the existing wall and forms a second bend and is anchored in the inside of the existing wall.

9. The structure at the corner where the new wall intersects with the existing wall according to claim 8, characterized in that, The existing wall has a slot, the bent section is located in the slot, and the slot is filled with concrete.

10. A construction method for the structure at the corner where the newly added wall intersects with the existing wall as described in claim 1, characterized in that, Includes the following steps: Install the first tie member within the existing wall and extend the first tie member to the location of the new wall to be constructed. The steel bars of the structural column are tied together, the second tie member is fixed to the steel bars of the structural column, and the second tie member passes through the location of the new wall to be constructed and is anchored to the existing wall. The construction of the new wall structure involves anchoring the first tie member and the second tie member inside the new wall structure. The structural column is poured to anchor the second tie member inside the structural column.

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