Brickwork infilled wall tie structure node structure

Abstract

The utility model relates to the technical field of masonry infilled wall transformation, in particular to a masonry infilled wall tie structure node structure which comprises an infilled wall arranged on the inner wall of a wall body, a connecting piece connected with the wall body and a supporting piece connected with the connecting piece, and the connecting piece penetrates through the infilled wall to be in sliding connection with the supporting piece. The filling wall is arranged between the wall body and the supporting piece; by arranging the filling wall on the inner wall of the wall body, the stress strength in the direction perpendicular to the cross section of the wall body is improved, constraint of the end face of the wall body is increased, wall body deformation is avoided, the supporting piece and the filling wall are slidably connected through the connecting piece, and therefore the connecting piece and the supporting piece can provide a fulcrum fixing effect on the wall body and can limit deformation of the end face of the wall body; the wall body is prevented from deforming, inclining, overturning or collapsing, the deformation space of the wall body is reserved, it is guaranteed that when the wall body is under the horizontal load effect, the wall body cannot bear shear force in the length direction of the wall body, it is guaranteed that the structure of the wall body is stable, and the transformation requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of masonry wall transformation, in particular to a node structure of a tie structure for a masonry infill wall. Background Technique

[0002] Due to the fact that some early building structure types adopted brick wall + wooden beam or brick wall + steel beam structures, after years of use, there are situations such as decay or corrosion of beam timbers, and the self - stability of masonry enclosure infill wall components is poor, the structural strength is reduced, and the seismic performance is poor, there is a risk of wall inclination or collapse. Especially for some such buildings with research value, cultural relic value, and ornamental value that are historical remains and need to retain the original appearance, it is necessary to reinforce the walls through transformation to meet their usage requirements.

[0003] Article "The masonry enclosure walls of a building should be built against and tied to columns, and measures should also be taken to prevent the walls from interfering with the horizontal displacement of the main columns of the building along the longitudinal direction; in 8 - and 9 - degree seismic zones, the built - in masonry walls should not be used" in the "Code for Seismic Design of Buildings" GB50011 - 2010 (2016 edition), and in the explanation of Article 13.3.6, it is stated that "Built - in masonry walls are not favorable for the longitudinal seismic resistance of factories, so they are generally not used". Since masonry infill walls are brittle materials piled up with block materials and bonded by mortar, when there is in - plane deformation of the masonry wall along the longitudinal direction, it will cause damage along horizontal joints (mortar joints), vertical toothed joints (mortar joints), stepped joints (mortar joints), etc. Therefore, the masonry wall cannot bear the shear force of horizontal loads along the longitudinal direction.

[0004] Currently, when strengthening masonry enclosure infill walls, two methods are usually adopted. One is to add protective structures on both the inner and outer sides of the wall, which will affect or damage the appearance of the original wall and cannot meet the transformation requirements; the other is to directly build a new wall only on the inner side of the wall and then connect the new wall to the original wall. Although the above two strengthening structures can appropriately reduce the risk of inclination or overturning of the original wall, the connection between the new wall and the original wall requires foundation reinforcement, and during an earthquake, the original wall is easily damaged by the horizontal shear force, which cannot meet the transformation requirements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a node structure of a tie structure for a masonry infill wall to solve the problem that the existing masonry enclosure wall cannot meet the requirements of seismic transformation.

[0006] The technical problem - solving solution of the utility model:

[0007] A joint structure of a masonry infill wall tie includes a filling wall arranged on the inner wall of the wall, a connecting piece connected to the wall, and a supporting piece connected to the connecting piece. One end of the connecting piece is connected to the wall, and the other end of the connecting piece passes through the filling wall and is slidably connected to the supporting piece in the horizontal direction parallel to the wall. The filling wall is arranged between the wall and the supporting piece.

[0008] Further defined, the connecting piece includes an L-shaped bolt and a connecting plate. The short arm of the L-shaped bolt is connected to the wall, and the long arm of the L-shaped bolt passes through the filling wall and is connected to the supporting piece through the connecting plate. The L-shaped bolt is slidably connected to the connecting plate.

[0009] Further defined, the number of the L-shaped bolts is multiple, and the multiple L-shaped bolts are arranged in an array in the wall. The ratio of the length of the short arm of the L-shaped bolt to the length of the long arm of the L-shaped bolt is 5:6 - 8.

[0010] Further defined, the multiple L-shaped bolts are arranged in a plum blossom shape or a square array in the wall.

[0011] Further defined, the supporting piece is a channel steel. The connecting plate is arranged at the end of the supporting piece, and a long circular hole sliding groove is arranged on the connecting plate in the horizontal direction. The long circular hole sliding groove faces the inner wall of the wall. The long arm of the L-shaped bolt passes through the filling wall and the long circular hole sliding groove in sequence and extends to the outside of the long circular hole sliding groove. The long arm of the L-shaped bolt is slidably connected to the connecting plate through the long circular hole sliding groove. The corresponding end of the supporting piece contacts the filling wall.

[0012] Further defined, the connecting plate is arranged between the filling wall and the supporting piece. The supporting piece is welded to the connecting plate, and a long circular hole sliding groove is arranged on the connecting plate in the horizontal direction. The long circular hole sliding groove faces the inner wall of the wall. The long arm of the L-shaped bolt passes through the filling wall and the long circular hole sliding groove in sequence and extends to the outside of the long circular hole sliding groove. The long arm of the L-shaped bolt is slidably connected to the connecting plate through the long circular hole sliding groove.

[0013] Further defined, the joint structure of the masonry infill wall tie further includes a strengthening connecting piece. One end of the strengthening connecting piece is connected to the wall, and the other end of the strengthening connecting piece is connected to the filling wall. The strengthening connecting piece is arranged on the periphery of the L-shaped bolt.

[0014] Further defined, the strengthening connecting piece includes a U-shaped tie bar and a flat steel. The flat steel is embedded in the horizontal mortar joint on the outdoor side of the wall along the length direction of the wall. One end of the U-shaped tie bar is arranged on the outside of the flat steel and is connected to the flat steel. The other end of the U-shaped tie bar passes through the wall and extends to the filling wall and is connected to the filling wall. The U-shaped tie bar is arranged on the periphery of the L-shaped bolt.

[0015] Further defined, a reinforcing steel bar mesh is arranged inside the filling wall, the reinforcing steel bar mesh is arranged in the same direction as the flat steel, and the reinforcing steel bar mesh is located on the indoor side of the wall.

[0016] Further defined, the reinforcing steel bar mesh includes a plurality of horizontal bars and a plurality of vertical bars that are cross-connected horizontally and vertically. The plurality of horizontal bars are arranged at equal intervals in the vertical direction, and the plurality of vertical bars are arranged at equal intervals in the horizontal direction; the long arm of the L-shaped bolt passes through the reinforcing steel bar mesh and is connected to the support member, and the reinforcing steel bar mesh connects the flat steel and the filling wall through U-shaped tie bars.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. For the pasted and built filling masonry wall and the main structure, due to the structural types and the self-characteristics of the materials, they can only deform independently and cannot deform coordinately. The present utility model realizes the deformation displacement of the main structure in any direction under the action of horizontal load by arranging support members, connecting members, and sliding bolts between the inner wall of the filling wall and the main structure, and the wall will not be subjected to any shear force along the longitudinal direction (in the plane of the wall), thus ensuring the stability of the masonry wall along the longitudinal direction.

[0019] 2. By arranging a filling wall on the inner wall of the wall, the stress intensity in the direction perpendicular to the cross-section of the vertical wall is improved, the constraint on the end face of the wall is increased, and the deformation, damage, or being pulled apart of the wall is avoided. At the same time, the support member and the filling wall are slidably connected through the connecting member, so that the connecting member and the support member can not only provide a fulcrum fixing effect on the wall, but also limit the deformation of the end face of the wall, preventing the wall from deforming, tilting, overturning, or collapsing, and also preventing the wall from tilting, overturning, or collapsing during an earthquake; when under the action of horizontal load, the deformation and displacement of the main structure are carried out by sliding, deforming, and displacing the support member and the connecting member in the sliding groove of the connecting member; due to the fulcrum function of the support member and the connecting member, the enclosure masonry wall deforms and displaces along the cross-section direction of the wall with the main steel structure, which belongs to the out-of-plane horizontal deformation of the masonry wall allowed by the seismic code; due to the sliding function of the sliding groove of the support member and the connecting member, the influence of the displacement of the main structure on the longitudinal section of the masonry wall is eliminated, and the enclosure masonry wall maintains stability, no deformation, and no horizontal displacement in the plane of the wall along the longitudinal section of the wall, ensuring the stability of the masonry wall along the longitudinal direction under the action of horizontal load, thus ensuring the structural stability of the wall and meeting the transformation requirements.

[0020] 3. By arranging U-shaped tie bars and flat steel, the connection strength between the wall and the filling wall is realized, the connection stability of the wall is ensured, and at the same time, the stress distribution around the L-shaped bolt is further made uniform, avoiding damage to the local part of the wall caused by stress concentration and improving the connection stability of the wall.

[0021] 4. The structure strength of the infilled wall is improved by arranging the tie steel bar mesh in the infilled wall, the structural stability of the wall is enhanced, the deformation or damage of the wall is avoided. At the same time, the L-shaped bolt is connected with the tie steel bar mesh to ensure the reliable and firm connection between the sliding L-shaped bolt and the infilled wall. Also, when the wall is subjected to the longitudinal horizontal force parallel to the support, the local damage of the infilled wall will not be caused. Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the distribution of the L-shaped bolt of the present utility model on the wall;

[0023] Figure 2 It is a schematic diagram of the structure of the connecting plate of the present utility model arranged inside the end of the support;

[0024] Figure 3 is Figure 2 The sectional structure schematic diagram of part A-A in;

[0025] Figure 4 It is a schematic diagram of the structure of the connecting plate of the present utility model arranged outside the end of the support;

[0026] Figure 5 is Figure 4 The sectional structure schematic diagram of part B-B in;

[0027] Figure 6 It is a schematic diagram of the wall structure of the present utility model;

[0028] 1 - Wall; 1a - Infilled wall; 2 - L-shaped bolt; 3 - Support; 4 - Connecting plate; 4a - Long circular hole sliding groove; 4b - Backing plate; 5 - Tie steel bar mesh; 5a - Horizontal bar; 5b - Vertical bar; 6 - U-shaped tie bar; 7 - Flat steel. Detailed Description of the Preferred Embodiments

[0029] Embodiment 1

[0030] Refer to Figures 1 to 4, this embodiment provides a joint structure of a masonry infill wall tie, including a filling wall 1a built on the inner wall of the wall 1, a connecting piece connected to the wall 1, and a supporting piece 3 connected to the connecting piece; wherein the wall 1 is a brittle material stacked by block materials and bonded by mortar, the filling wall 1a is cast with reinforced concrete, the thickness is less than that of the wall 1, and it is arranged on the end face on the indoor side of the wall 1. The connecting piece includes an L-shaped bolt 2 and a connecting plate 4. The L-shaped bolt 2 can use all-steel steel screws, anchor bolts and other components. The L-shaped bolt 2 is of an L-shaped structure. The short arm of the L-shaped bolt 2 is arranged in the wall 1 along the mortar gap between the blocks and connected to the wall. Before constructing the masonry filling wall, it is welded to the steel bars of the double-layer and double-direction spot-welded lattice tie steel bar mesh of the masonry wall filling wall at the corresponding position, avoiding occupying the space of the tie steel bar mesh and increasing the wall thickness. The long arm of the L-shaped bolt 2 is perpendicular to the wall 1, so that the long arm of the L-shaped bolt 2 extends to the outside of the filling wall 1a after passing through the filling wall 1a. The L-shaped bolt 2 is slidably connected with the connecting plate, and the connecting plate 4 is fixedly connected with the supporting piece 3. One end of the supporting piece 3 is connected to the wall 1 through the L-shaped bolt 2, and the other end of the supporting piece 3 is connected to the main body, realizing the sliding connection between the L-shaped bolt 2 and the supporting piece 3, so that the main structure can slide relative to the longitudinal direction of the L-shaped bolt 2 and the connected wall 1 through the supporting piece 3. The L-shaped bolt 2 is relatively stationary with respect to the wall 1 and the filling wall 1a, so that the supporting piece 3 will not exert a horizontal shear force on the wall through the L-shaped bolt 2, ensuring the stability of the wall.

[0031] The ratio of the length of the short arm of the L-shaped bolt 2 to the length of the long arm of the L-shaped bolt 2 is (5:6) - 8; the supporting piece 3 can be selected as a channel steel, square steel or H-shaped steel, taking the channel steel as an example; taking the direction parallel to the wall 1 as the transverse direction and the direction perpendicular to the wall 1 as the longitudinal direction, that is, when the main structure deforms or displaces in the longitudinal direction perpendicular to the wall 1, the wall 1 is prevented from tilting or collapsing under the action of the supporting piece 3 and the filling wall 1a; when the main structure deforms or displaces in the transverse direction parallel to the wall 1, at this time, the L-shaped bolt 2 is slidably connected with the supporting piece 3, dissipating the shear force transmitted by the main structure to the longitudinal section direction of the wall 1, making the wall 1 structure stable, avoiding damage to the wall 1, and meeting the transformation requirements of the wall 1.

[0032] Reference Figure 1 , the number of the L-shaped bolts 2 is multiple, and the multiple L-shaped bolts 2 are arranged in an array on the wall 1, so that the multiple L-shaped bolts 2 are connected to the wall 1, ensuring that the tensile force or tension force received by the wall 1 when receiving the force in the longitudinal direction is more uniform, avoiding deformation of the wall 1, ensuring the structural stability of the wall 1, and avoiding damage to the wall 1.

[0033] Reference Figure 2 and Figure 3, the support member 3 is slidably connected to the L-shaped bolt 2 through the connecting plate 4. The support member 3 can be selected as a channel steel, and the connecting plate 4 is selected as a steel plate. The connecting plate 4 is arranged inside the channel steel near the end of the channel steel. The connecting plate 4 is welded to the inner wall of the channel steel, which saves materials, and the connecting plate is hidden inside the channel steel of the support member, and there is no trace left by the connecting plate on the masonry wall surface from the outside, and the appearance is neat and beautiful; the end of the channel steel provided with the connecting plate 4 contacts the filling wall 1a. A strip-shaped oblong sliding groove 4a is opened on the connecting plate 4. The oblong sliding groove 4a is horizontally arranged. The long arm of the L-shaped bolt 2 passes through the oblong sliding groove 4a and then is sleeved with a backing plate 4b, and then the connecting plate 4 is connected to the long arm of the L-shaped bolt 2 through a nut, so that the support member 3 contacts the filling wall 1a. When the long arm of the L-shaped bolt 2 can slide left and right in the oblong sliding groove 4a when relative sliding occurs in the horizontal direction between the wall body 1 and the support member 3, the structural stability of the wall body 1 is ensured.

[0034] Reference Figure 4 and Figure 5 , the support member 3 is slidably connected to the L-shaped bolt 2 through the connecting plate 4. At this time, the connecting plate 4 can also be arranged between the filling wall 1a and the support member 3. At this time, the support member 3 can also be selected as a channel steel, a section steel or an H-shaped steel. Taking the channel steel as an example, one end of the channel steel is welded to the connecting plate 4. An oblong sliding groove 4a is also arranged horizontally on the connecting plate 4. The long arm of the L-shaped bolt 2 passes through the filling wall 1a and then passes through the oblong sliding groove 4a and extends to the inside of the channel steel, so that the contact area between the support member 3 and the filling wall 1a is larger, and stress concentration is avoided; in addition, the size of the connecting plate is larger than the cross-sectional size of the channel steel, and the operation is simple when welding on the outside of the channel steel.

[0035] Reference Figure 6 , in order to further ensure the stability of the connection between the filling wall 1a and the wall body 1 and avoid the separation of the wall body 1 and the filling wall 1a, the joint structure node of the masonry filling wall tie provided in this embodiment further includes a strengthening connecting member. The wall body 1 is connected to the filling wall 1a through the strengthening connecting member. The strengthening connecting member includes a U-shaped tie bar 6 and a flat steel 7. The flat steel 7 is embedded in the wall body 1. The flat steel 7 is arranged in the horizontal mortar joint of the upper and lower adjacent blocks of the wall body 1 along the longitudinal direction. At the same time, the flat steel 7 is arranged at equal intervals along the vertical direction. The interval between two adjacent flat steels 7 is 3 to 4 bricks. The folded end of the U-shaped tie bar 6 is arranged outside the flat steel 7 and is clamped with the flat steel 7. The open connecting end of the U-shaped tie bar 6 passes through the wall body 1 and is lapped with the tie steel meshes 5a and 5b in the filling wall 1a. The U-shaped tie bar 6 is also arranged in the horizontal mortar joint of the left and right adjacent blocks in order not to damage the external facade style and block strength of the wall body 1, so as to realize the stable connection between the wall body 1 and the filling wall 1a, improve the structural stability of the wall body 1, so that when the wall body 1 is deformed in the horizontal or vertical direction, the wall body 1 and the filling wall 1a can deform synchronously, and the wall body 1 and the filling wall 1a are both stressed more evenly, and stress concentration is avoided.

[0036] At the same time, since the wall 1 is semi-rigidly and semi-hingedly connected to the support member 3 by the L-shaped bolt 2 in the longitudinal direction, when the wall deforms and displaces in the longitudinal direction of the support member, stress concentration at the connection position of the L-shaped bolt 2 and the wall 1 is likely to cause local damage. Therefore, the connection strengthening part is selected to be arranged on the periphery of the L-shaped bolt 2. Since the L-shaped bolt 2 is also arranged along the horizontal mortar joint between the upper and lower adjacent blocks of the wall 1, the connection strengthening part is arranged at the four positions of the upper, lower, left and right of the L-shaped bolt 2, so that the distance between the strengthening connecting member and the corresponding L-shaped bolt 2 is about 1 brick (spacing in the horizontal direction) × 3 - 4 bricks (spacing in the vertical direction). The length of a single brick can be selected as 240 mm, and the thickness can be selected as 60 mm.

[0037] Among them, a tie bar mesh 5 is arranged in the infill wall 1a. The thickness of the infill wall 1a can be 25 cm - 30 mm. M20 cement mortar or C25 - C30 concrete is selected to be cast and formed on the outside of the tie bar mesh. The tie bar mesh 5 includes a plurality of horizontal bars 5a and a plurality of vertical bars 5b that are cross-connected horizontally and vertically. The horizontal bars 5a are arranged horizontally, and the plurality of horizontal bars 5a are arranged at equal intervals in the vertical direction. The interval between two adjacent horizontal bars 5a is 3 - 4 bricks. The vertical bars 5b are arranged in the vertical direction, and the plurality of vertical bars 5b are arranged at equal intervals in the horizontal direction. The interval can be selected as 4 times the thickness of a single brick. The connection positions of the horizontal bars 5a and the vertical bars 5b are spot-welded. The long arm of the L-shaped bolt 2 passes through the tie bar mesh and extends to the outside of the infill wall 1a to be slidably connected to the support member 3. The short arm of the L-shaped bolt 2 is welded to the tie bar mesh in the infill wall 1a to ensure its reliable fixation in the wall. The flat steel 7 is arranged at the same height as the horizontal bars 5a. The U-shaped tie bar 6 passes through the wall after pre-grooving and is folded back to be sleeved on the horizontal bars 5a of the inner wall steel mesh, and is hooked and welded to the inner wall tie bar mesh to realize the connection between the wall 1 and the infill wall 1a, ensuring the effective support and connection of the wall 1, avoiding the toppling or collapse of the wall 1, and meeting the renovation requirements of the wall 1.

Claims

1. A masonry infill wall tie structure node structure, characterized in that: The invention comprises a filling wall (1a) arranged on the inner wall of a wall (1), a connecting piece connected to the wall (1), and a supporting piece (3) connected to the connecting piece, wherein one end of the connecting piece is connected to the wall (1), and the other end of the connecting piece passes through the filling wall (1a) and is slidably connected to the supporting piece (3) in a horizontal direction parallel to the wall (1), and the filling wall (1a) is arranged between the wall (1) and the supporting piece (3).

2. The masonry infill wall tie structure node structure according to claim 1, characterized in that: The connecting member comprises an L-shaped bolt (2) and a connecting plate (4); the short arm of the L-shaped bolt (2) is connected to the wall (1); the long arm of the L-shaped bolt (2) passes through the filling wall (1a) and is connected to the supporting member (3) via the connecting plate (4); and the L-shaped bolt (2) is slidably connected to the connecting plate (4).

3. The masonry infill wall tie structure node structure according to claim 2, characterized in that: The number of the L-shaped bolts (2) is multiple, and the multiple L-shaped bolts (2) are arranged in an array in the wall (1), and the ratio of the length of the short arm of the L-shaped bolt (2) to the length of the long arm of the L-shaped bolt (2) is 5:6-8.

4. The masonry infill wall tie structure node structure according to claim 3, characterized in that: A plurality of L-shaped bolts (2) are arranged in a plum blossom or square array in the wall (1).

5. The masonry infill wall tie structure node structure according to claim 3, characterized in that: The support member (3) is a channel steel, the connecting plate (4) is arranged at the end of the support member (3), and the connecting plate (4) is provided with an oblong hole sliding groove (4a) arranged in the horizontal direction, the oblong hole sliding groove (4a) is directly opposite to the inner wall of the wall (1), the long arm of the L-shaped bolt (2) passes through the filling wall (1a) and the oblong hole sliding groove (4a) in sequence and extends to the outside of the oblong hole sliding groove (4a), the long arm of the L-shaped bolt (2) is slidably connected to the connecting plate (4) through the oblong hole sliding groove (4a), and the corresponding end of the support member (3) is in contact with the filling wall (1a).

6. The masonry infill wall tie structure node structure according to claim 4, characterized in that: The connecting plate (4) is arranged between the filling wall (1a) and the supporting member (3), the supporting member (3) and the connecting plate (4) are welded, the connecting plate (4) is provided with an oblong hole sliding groove (4a) arranged in a horizontal direction, the oblong hole sliding groove (4a) is directly opposite to the inner wall of the wall (1), the long arm of the L-shaped bolt (2) passes through the filling wall (1a) and the oblong hole sliding groove (4a) in sequence and extends to the outside of the oblong hole sliding groove (4a), and the long arm of the L-shaped bolt (2) is slidably connected to the connecting plate (4) through the oblong hole sliding groove (4a).

7. The masonry infill wall tie structure node structure according to claim 5 or 6, characterized in that: The masonry infill wall tie-joint structure node structure also includes a reinforcing connector, one end of which is connected to the wall (1), and the other end of which is connected to the infill wall (1a), and the reinforcing connector is arranged on the peripheral side of the L-shaped bolt (2).

8. The masonry infill wall tie structure node structure according to claim 7, characterized in that: The reinforcing connector comprises a U-shaped tie bar (6) and a flat steel (7); the flat steel (7) is embedded in a horizontal mortar joint of the wall on the outdoor side of the wall (1) along the length direction of the wall (1); one end of the U-shaped tie bar (6) is arranged on the outside of the flat steel (7) and connected to the flat steel (7); the other end of the U-shaped tie bar (6) passes through the wall (1) and extends to the filling wall (1a) and is connected to the filling wall (1a); the U-shaped tie bar (6) is arranged on the peripheral side of the L-shaped bolt (2).

9. The masonry infill wall tie structure node structure according to claim 8, characterized in that: A tie steel mesh (5) is arranged in the filling wall (1a), the tie steel mesh (5) and the flat steel (7) are arranged in the same direction, and the tie steel mesh (5) is located on the indoor side of the wall (1).

10. The masonry infill wall tie structure node structure according to claim 9, characterized in that: The tie steel mesh (5) comprises a plurality of transverse ribs (5a) and a plurality of vertical ribs (5b) which are cross-connected in a horizontal and vertical direction, wherein the plurality of transverse ribs (5a) are arranged at equal intervals in the vertical direction, and the plurality of vertical ribs (5b) are arranged at equal intervals in the horizontal direction; the long arm of the L-shaped bolt (2) passes through the tie steel mesh (5) and is connected to the support member (3); the tie steel mesh (5) connects the flat steel (7) to the filling wall (1a) via the U-shaped tie steel (6).

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