A gravity column-composite shear wall reinforcement system

Abstract

The present application is a gravity column-composite shear wall reinforcing system, which comprises load-bearing beams and gravity columns bearing vertical loads, rigid floor slabs transmitting horizontal loads and composite shear walls bearing horizontal loads. The composite shear walls are formed by reinforcing the HDC surface layer of the masonry partition wall nested in the beam-column frame, and have a lateral stiffness much greater than that of the original frame, and can bear all horizontal loads. Thus, the original frame beams and columns can only bear vertical loads and not horizontal loads, and are thus degraded into the load-bearing beams and gravity columns. The horizontal loads of each region are transmitted to the composite shear walls of the local region through the rigid floor slabs. The present application is mainly applicable to frame structures whose vertical load bearing capacity meets the requirements but wind and earthquake resistance does not meet the requirements, can avoid overall reinforcement of the beams and columns, and can make the structure meet the requirements of wind and earthquake resistance by only reinforcing the HDC surface layer of a small number of masonry partition walls, thereby reducing the cost of reinforcement and reconstruction of old buildings.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building, in particular to a gravity column-composite shear wall reinforcement system which meets the requirements of vertical load bearing basically but does not meet the requirements of wind resistance and earthquake resistance. BACKGROUND

[0002] In recent years, the housing construction in China is changing from "incremental development" to "stock update", and the reinforcement and reconstruction of old buildings is an important engine to promote the update of towns and villages. At present, most of the multi-storey buildings adopt reinforced concrete frame structure system, and the masonry partition wall is arranged in the frame for functional separation.

[0003] For such buildings, the conventional reinforcement method is to recheck the existing structure according to the frame system, and to reinforce the components which do not meet the requirements of bearing capacity and seismic structure at the component level. The conventional reinforcement method can be well applied to various structures which do not meet the requirements of vertical load bearing, but if it is applied to the structures which meet the requirements of vertical load bearing basically but do not meet the requirements of wind resistance and earthquake resistance, a large number of beams and columns need to be reinforced, thereby greatly increasing the reinforcement cost. SUMMARY

[0004] The present application aims to provide a gravity column-composite shear wall reinforcement system, which at least solves the problem of large workload and high cost in the reconstruction of old frame buildings, especially the reconstruction of structures which meet the requirements of vertical load bearing basically but do not meet the requirements of wind resistance and earthquake resistance.

[0005] The present application provides a gravity column-composite shear wall reinforcement system, which comprises: load bearing beams and gravity columns bearing vertical load, rigid floor transferring horizontal load, and composite shear wall bearing horizontal load.

[0006] The composite shear wall bearing horizontal load comprises: frame beams, frame columns, and masonry partition walls, the masonry partition walls are nested in the frame beams and frame columns, and the masonry partition walls are provided with HDC high ductility concrete reinforcement surface layers.

[0007] Further, at least one of the masonry partition walls is provided with an HDC high ductility concrete reinforcement surface layer.

[0008] Further, the HDC high ductility concrete reinforcement surface layer is provided with reinforcement bars.

[0009] Further, the reinforcement bars comprise horizontal bars and vertical bars, the horizontal bars and vertical bars are multiple, and the horizontal bars and vertical bars are arranged along the surface of the masonry partition wall.

[0010] Further, the reinforcement bars further comprise through-wall bars, one end of the through-wall bars is located in the HDC high ductility concrete reinforcement surface layer, and the other end of the through-wall bars extends into the masonry partition wall.

[0011] Further, the masonry partition wall is provided with HDC high ductility concrete reinforcing surface layer on both sides.

[0012] Further, the other end of the through-wall bar extends out of the masonry partition wall, and the other end of the through-wall bar is fixed in the HDC high ductility concrete reinforcing surface layer on the other side of the masonry partition wall.

[0013] Further, the two ends of the through-wall bar are connected with the vertical bars and / or horizontal bars on both sides of the masonry partition wall, respectively.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The HDC reinforcing surface layer is arranged on the masonry partition wall of the original frame and the masonry partition wall embedded in the beam-column frame, so that the "gravity column-composite shear wall" structure system is formed with the load-bearing beam, gravity column and rigid floor, and the lateral stiffness of the composite shear wall is greater than that of the original frame structure, so that the composite shear wall can bear all the horizontal actions.

[0016] 2. The present application can meet the requirements of wind resistance and earthquake resistance by reinforcing the HDC surface layer of a small amount of masonry partition wall, and can avoid overall reinforcement of the beams and columns of the building.

[0017] 3. The construction amount is greatly reduced, and the cost of the old building reconstruction is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0019] Figure 2 is a three-dimensional exploded view of the gravity column-composite shear wall structure system in the embodiment of the present application;

[0020] Figure 3 is an embodiment schematic diagram of the single-sided HDC high ductility concrete reinforcing surface layer of the masonry wall;

[0021] Figure 4 is an embodiment schematic diagram of the double-sided HDC high ductility concrete reinforcing surface layer of the masonry wall.

[0022] 1. Load-bearing beam; 2. Gravity column; 3. Composite shear wall; 31. Edge frame beam; 32. Edge frame column; 33. Masonry partition wall; 34. HDC high ductility concrete reinforcing surface layer; 4. Rigid floor; 51. Horizontal bar; 52. Vertical bar; 53. Through-wall bar. DETAILED DESCRIPTION

[0023] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0024] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0025] In the embodiment 1, the gravity column-composite shear wall reinforcement system provided by the present application comprises: load-bearing beams 1 and gravity columns 2 bearing vertical loads, rigid floor slabs 4 transferring horizontal loads, and composite shear walls 3 bearing horizontal loads.

[0026] The composite shear wall 3 bearing horizontal loads comprises: frame beams, frame columns, and masonry partition walls 33 nested in the frame beams and frame columns, and the masonry partition walls 33 are provided with HDC high ductility concrete reinforcement surface layers.

[0027] Specifically, the horizontal loads are borne by the composite shear walls 3,

[0028] The load-bearing beams 1 and gravity columns 2 of the present application only bear vertical loads, and do not bear horizontal loads, such as Figure 1 The horizontal loads of the structure in each area are transferred to the composite shear walls 3 in the local area through the rigid floor slabs 4.

[0029] In the embodiment 2, the method for applying the gravity column-composite shear wall reinforcement system of the embodiment 1 to old house reconstruction comprises the following steps:

[0030] Step 1: selecting a surface wall in the building that needs to be reinforced, wherein the surface wall comprises: edge frame beams 31, edge frame columns 32, and masonry partition walls 33 nested in the edge frame beams 31 and edge frame columns 32;

[0031] Step 2: reinforcing at least one of the masonry partition walls with HDC high ductility concrete; and the reinforced surface wall serves as a composite shear wall 3 bearing horizontal loads;

[0032] The reinforcement system further comprises rigid floor slabs 4 transferring horizontal loads, and the rigid floor slabs 4 are fixedly connected with the composite shear walls 3, load-bearing beams 1, and gravity columns 2.

[0033] The composite shear wall 3 is used to bear the horizontal load of the building, so as to at least reduce or release the horizontal load of the original frame beam and column, the original frame beam and column can be degraded into the load-bearing beam 1 and the gravity column 2, and then a gravity column-composite shear wall structure system is formed.

[0034] Specifically, the old house referred to in the present application refers to a house whose vertical load bearing basically meets the requirements, but whose wind resistance and earthquake resistance do not meet the requirements, including: frame beams, frame columns, rigid floor slabs 4, and masonry partition walls nested in the frame beams and columns. The masonry partition walls have no mechanical effect before reinforcement and only serve as building partitions. Before reinforcement, all frame beams and columns bear both horizontal load and vertical load.

[0035] In the reconstruction, step 1 is for detection, and step 2 is for calculating and selecting a suitable wall, both of which are conventional methods. Figure 2 As shown in the figure, the masonry partition wall of the selected wall is reinforced by an HDC surface layer to form a composite shear wall 3.

[0036] After the reconstruction, the original frame beams and columns of the old house are released and degraded into load-bearing beams and gravity columns, which only bear vertical load and do not bear horizontal load, as shown in the figure. Figure 1 The horizontal load of each region of the structure is transmitted to the composite shear wall 3 in the local region through the rigid floor slab 4.

[0037] Because the lateral stiffness of the composite shear wall is much greater than that of the original frame structure, a new lateral force system is formed to bear all the horizontal actions.

[0038] The embodiment of the present application is applied to a frame structure whose vertical load bearing basically meets the requirements, but whose wind resistance and earthquake resistance do not meet the requirements, so that the structure can meet the requirements of wind resistance and earthquake resistance by only reinforcing a small amount of masonry partition walls 33 by an HDC surface layer, without the need for overall reinforcement of the beams and columns.

[0039] Optionally, the HDC high-ductility concrete reinforcing surface layer 34 is provided with reinforcing bars.

[0040] The embodiment of the present application can also be improved by providing reinforcing bars in the HDC high-ductility concrete reinforcing surface layer 34 to further improve the lateral performance of the gravity column-composite shear wall structure system.

[0041] Optionally, the reinforcing bars include horizontal bars 51 and vertical bars 52, the horizontal bars 51 and the vertical bars 52 are both multiple, and the horizontal bars 51 and the vertical bars 52 are uniformly arranged along the surface of the masonry partition wall 33.

[0042] Specifically, the horizontal bars 51 and the vertical bars 52 are uniformly arranged and fixed, and the HDC high-ductility concrete covers the horizontal bars 51 and the vertical bars 52.

[0043] The embodiment of the present application further improves the lateral force resistance performance of the gravity column-composite shear wall reinforcement system, and the structure is simple.

[0044] Optionally, the reinforcing bar further comprises a through-wall bar 53, one end of the through-wall bar 53 being located in the HDC high ductility concrete reinforced surface layer 34, and the other end extending into the masonry partition wall 33.

[0045] The embodiment of the present application can select the through-wall bar 53 according to the need when the wall strength is poor and the lateral resistance requirement is high, and the lateral resistance capacity of the wall after using the through-wall bar 53 reaches the design requirement.

[0046] Optionally, the masonry partition wall 33 is provided with the HDC high ductility concrete reinforced surface layer 34 on both sides.

[0047] The embodiment of the present application can be used according to the need when the wall strength is poor, so that the wall reaches the lateral resistance requirement.

[0048] Optionally, the other end of the through-wall bar 53 extends out of the masonry partition wall 33, and the other end of the through-wall bar 53 is fixed in the HDC high ductility concrete reinforced surface layer 34 on the other side of the masonry partition wall 33.

[0049] The embodiment of the present application enhances the wall strength of the masonry partition wall 33 because the two ends of the through-wall bar 53 are fixed in the HDC high ductility concrete reinforced surface layer 34, so that the lateral resistance capacity of the wall is improved.

[0050] Optionally, the two ends of the through-wall bar 53 are connected with the vertical bars 52 and / or the horizontal bars 51 on both sides of the masonry partition wall 33 respectively.

[0051] The embodiment of the present application can select double-sided reinforcement or single-sided reinforcement according to the actual need, and whether to set the through-wall bar 53 and the distributed steel bar can be selected according to the stress requirement and the thickness of the HDC surface layer.

[0052] When the present application is used, the following steps are included:

[0053] Step 1: determining the masonry partition wall 33 that needs to be reinforced by the HDC surface layer according to the stress requirement;

[0054] Step 2: reinforcing the surface wall by the HDC high ductility concrete;

[0055] Step 201: chiseling the building surface layer of the above partition wall, and embedding and chiseling the wall surface;

[0056] Step 202: drilling holes at the positions of the through-wall bars 53, cleaning the dust of the partition wall, and spraying water for maintenance;

[0057] Step 203: installing the through-wall bars 53 after the holes are dried, and filling the holes with structural glue;

[0058] Step 204: laying horizontal and vertical steel mesh;

[0059] Step 205: troweling high ductility concrete (HDC) surface layer for curing;

[0060] Step 207: restoring the building surface layer of the masonry partition wall 33;

[0061] The specific horizontal steel bars 51, vertical steel bars 52 and through-wall steel bars 53 can be selected according to actual conditions, and the masonry partition wall 33 can be reinforced by HDC high ductility concrete on one side or both sides according to actual needs.

[0062] Compared with the prior art, the reconstruction method of the embodiment of the application adds the HDC layer on the original masonry partition wall 33, reduces the construction amount, is simple in construction method and easy to operate.

[0063] The application does not need to reinforce the frame beam and column in the prior art on a large area, and achieves the purpose of meeting the wind resistance and earthquake resistance requirements of the structure by a small amount of reinforcement, breaks through the limitation of the conventional reinforcement method of the existing frame type structure, and reduces the reconstruction cost of the old house.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application and not to limit it, and although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific embodiments of the application can be modified or replaced by equivalents after reading the present application, but these modifications or changes are still within the scope of the application. The protection range of the claims to be approved.

Claims

1. A gravity column-composite shear wall reinforcement system, characterized by: The reinforcement system comprises: load-bearing beams and gravity columns bearing vertical loads, rigid floor slabs transmitting horizontal loads, and composite shear walls bearing horizontal loads; The composite shear wall bearing horizontal loads comprises: a frame beam, a frame column, and a masonry partition wall, wherein the masonry partition wall is provided with an HDC high-ductility concrete reinforcement surface layer; The load-bearing beams and gravity columns only bear vertical loads and do not bear horizontal loads, and the horizontal loads of various regions of the structure are transmitted to the composite shear walls in local regions through the rigid floor slabs; The HDC high-ductility concrete reinforcement surface layer is provided with reinforcement bars; The reinforcement bars comprise horizontal bars and vertical bars, and the horizontal bars or the vertical bars are multiple, and the horizontal bars or the vertical bars are arranged along the surface of the masonry partition wall.

2. The gravity column-composite shear wall retrofitting system according to claim 1, wherein, At least one surface of the masonry partition wall is provided with the HDC high-ductility concrete reinforcement surface layer.

3. The gravity column-composite shear wall retrofit system according to claim 1, wherein, The reinforcement bars further comprise through-wall bars, one end of the through-wall bars is located in the HDC high-ductility concrete reinforcement surface layer, and the other end of the through-wall bars extends into the masonry partition wall.

4. The gravity column-composite shear wall retrofit system according to claim 3, wherein, Both surfaces of the masonry partition wall are provided with the HDC high-ductility concrete reinforcement surface layer.

5. The gravity column-composite shear wall retrofitting system according to claim 4, wherein, The other end of the through-wall bars extends out of the masonry partition wall, and the other end of the through-wall bars is fixed in the HDC high-ductility concrete reinforcement surface layer on the other side of the masonry partition wall.

6. The gravity column-composite shear wall retrofitting system according to claim 5, wherein, The two ends of the through-wall bars are connected with the vertical bars and / or the horizontal bars on the two sides of the masonry partition wall, respectively.

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