CN110173126A - A kind of barnacle body house wall reinforcement means - Google Patents

Abstract

The invention relates to the technical field of house reinforcement, in particular to a method for strengthening the wall of a stone masonry house, which avoids the demolition and reconstruction of the original stone structure and does not cause damage to the original structure; The net is bound firmly, so that the inner side of the stone structure wall forms a steel skeleton, so that the wall and the steel mesh can bear the force together, which greatly improves the strength and earthquake resistance of the stone structure wall, further improves the integrity of the wall, and can be well Improve the shear and bending deformation performance of the stone structure wall, and the construction is simple, economical and reasonable; the wall joints adopt the method of "pointing first, then grouting", which greatly improves the fullness and aesthetics of the joints; It reduces the loss of personnel and property caused by disasters such as earthquakes and typhoons, increases the service life of houses, and provides farmers with a safer and more reliable living environment.

Description

A method for strengthening the walls of stone masonry houses

technical field

The invention relates to the technical field of house reinforcement, in particular to a wall reinforcement method of a stone masonry house.

Background technique

At present, the proportion of stone structures used in rural residences in different coastal areas of Fujian is relatively high. The mortar fullness of the stone wall constructed with slurry is low, and the integrity and shear and earthquake resistance of the wall are extremely poor. Commonly used stone masonry wall reinforcement schemes: focus on the reconstruction of masonry joints. However, these measures are still limited in terms of improving the integrity and seismic performance of the wall. Reliability remains questionable. Therefore, it is necessary to adopt new materials, new technologies, and new techniques to further improve the current stone masonry house reinforcement scheme.

For example, the invention patent with the domestic patent number CN103498571.B discloses a reinforced stone structure and its construction method using a wall-penetrating steel bar skeleton and a steel mesh, including the original stone structure wall, and also includes the steel bars arranged on both sides of the original stone structure wall The mesh and the tie bars that run through the wall, through the tie bars of the stone structure wall, form a steel skeleton on both sides of the stone structure wall, and then bind the steel mesh on the steel skeleton, and then spray concrete. This invention drives steel bars into the rough stone structure, and the steel bars driven in are not easy to form a whole stone structure, and there is no modification to the original joints, so the reliability of the reinforcement measures of this invention is low.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for strengthening the walls of stone masonry houses with better integrity and simple and economical construction.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for strengthening the wall of a stone masonry house, the wall includes stones and joints between stones, including the following steps:

Step 1: Cut out grooves on the joints on both sides of the wall, and place supporting pads in the grooves; use high-pressure water guns to remove all the original mortar in the joints; use concrete mortar to clean the two sides of the wall The joints on the side are jointed separately, and the joints after jointing include the jointing surface and the jointing cavity formed between the two jointing surfaces;

Step 2: Alternately arrange tie reinforcements and grouting holes on the pointing surface of the inner side of the wall, and ensure that the tie reinforcements in the upper and lower adjacent joints are arranged in the shape of plum blossom piles; one end of the tie reinforcement is located on the wall The other end sticks out of the wall joint and is the free end;

Inject grout into the joint cavity through the grouting holes, block the grouting holes immediately after the grouting is completed, until all the grouting holes are grouted;

After the whole wall has completed the transformation of the joints, the reinforcement mesh is laid on the side of the wall from bottom to top, and the free end of each tie reinforcement is tied to the node of the reinforcement mesh;

Step 3: Spray concrete on the outside of the steel mesh to integrate the steel mesh and the wall.

The beneficial effects of the present invention are: avoiding the demolition and rebuilding of the original stone structure, without causing damage to the original structure; fixing the reinforcement mesh by using the wall-crossing tie reinforcement and binding it firmly with the reinforcement mesh, so that the inner side of the stone structure wall forms a reinforcement skeleton, The wall and the steel mesh can be jointly stressed, greatly improving the strength and earthquake resistance of the stone structure wall, further improving the integrity of the wall, and can well improve the shear and bending deformation performance of the stone structure wall , and the construction is simple, economical and reasonable; the wall joints adopt the method of "pointing first, then grouting", which greatly improves the fullness and aesthetics of the joints; reduces the loss of personnel and property caused by earthquakes, typhoons and other disasters, It increases the service life of the house and provides farmers with a safer and more reliable living environment.

Description of drawings

Fig. 1 is the structural representation of the stone masonry house wall reinforcement method of the embodiment of the present invention;

Fig. 2 is the front view of the support block of the stone masonry house wall reinforcement method of the embodiment of the present invention;

Fig. 3 is the side view of the support block of the stone masonry house wall reinforcement method of the embodiment of the present invention;

Fig. 4 is the schematic diagram of the pointing treatment of the stone masonry house wall reinforcement method of the embodiment of the present invention;

Fig. 5 is the structural representation of the grouting hole of the stone masonry house wall reinforcement method of the embodiment of the present invention;

Fig. 6 is the schematic diagram of the wall partition of the stone masonry house wall reinforcement method according to the embodiment of the present invention;

Label description:

1. Original mortar; 2. Support block; 3. Jointing surface; 4. Jointing cavity; 82. Build joints.

Detailed ways

In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

The most critical idea of the present invention is: to remove the original mortar in the wall joints, and re-grouting; use the wall tie reinforcement to fix the reinforcement mesh and tie it firmly with the reinforcement mesh, so that the inner side of the stone structure wall forms reinforcement. skeleton.

Please refer to Fig. 1 to Fig. 6, a kind of stone masonry house wall reinforcement method provided by the present invention, described wall body comprises stone 81, the seam 82 between stone 81, comprises the following steps:

Step 1: Cut out grooves on the joints 82 on both sides of the wall body 8, place support pads 2 in the grooves; use a high-pressure water gun to remove all the original mortar 1 in the joints 82; use concrete mortar , the joints 82 on both sides of the wall body 8 are separately jointed, and the joints 82 after jointing include the jointing surface 3 and the jointing cavity 4 formed between the two jointing surfaces 3;

Step 2: On the pointing surface 3 on the inner side of the wall body 8, alternately set tie bars 5 and grouting holes 6 at intervals, and ensure that the tie bars 5 in the upper and lower adjacent joints 82 are arranged in the shape of plum blossom piles; One end of the steel bar 5 is located in the joint 82 of the wall 8, and the other end extends out of the joint 82 of the wall 8 as a free end;

Inject grout into the joint cavity 4 through the grouting holes 6, block the grouting holes 6 immediately after the grouting is completed, until all the grouting holes 6 are grouted;

After the whole body of wall 8 completes the reconstruction of the joints 82, a reinforcement mesh 7 is arranged on the inner surface of the body of wall 8 from bottom to top, and the free ends of each tie reinforcement 5 are tied to the nodes of the reinforcement mesh 7;

Step 3: Spray concrete on the outside of the reinforcement mesh 7 to integrate the reinforcement mesh 7 and the wall body 8 into one body.

It can be seen from the above description that the beneficial effects of the present invention are: avoiding the demolition and reconstruction of the original stone structure, without causing damage to the original structure; The steel skeleton is formed on the inner side, so that the wall and the steel mesh can bear the force together, which greatly improves the strength and earthquake resistance of the stone structure wall, further improves the integrity of the wall, and can well improve the shear of the stone structure wall. , bending deformation performance, and the construction is simple, economical and reasonable; the method of "pointing first, then grouting" in the wall joints greatly improves the fullness and aesthetics of the joints; reduces the damage caused by earthquakes, typhoons and other disasters It reduces the loss of personnel and property, increases the service life of the house, and provides a safer and more reliable living environment for farmers.

Further, in the first step, the wall body 8 is divided into several vertical partitions according to the size of the wall body 8 , and all the original mortar 1 in the joints 82 is removed by partitioning and stage-by-stage operations.

It can be seen from the above description that the stability of the wall during the construction process is ensured by removing the original mortar in the joints by divisions and stages.

Further, the pointing treatment in the first step is performed with ultra-high performance concrete.

It can be seen from the above description that the use of ultra-high performance concrete can ensure the firm bond between the steel bar and the wall.

Further, in the first step, ultra-high performance concrete is used for grouting of the joint cavity 4 .

From the above description, it can be seen that by using ultra-high performance concrete to replace the original mortar in the joints, the shear resistance of the wall is greatly improved.

Further, the grouting in the step 1 is poured layer by layer from bottom to top, from one end of the wall to the other end of the wall hole by hole, and the grouting pressure is not less than 0.2 MPa.

It can be seen from the above description that the method of "pointing first, then grouting" through the wall joints has greatly improved the fullness and aesthetics of the joints; The method of grouting layer by layer and hole from bottom to top ensures the uniform grouting of joints.

Further, the steel bars have a diameter of Φ12-Φ14.

Further, in the step 3, the thickness of ultra-high-performance concrete is 0.2-2 cm after pouring the outer wooden formwork of the reinforcement mesh 7 .

From the above description, it can be known that the inner wall and the steel mesh form a whole through the bonding of the tie-in steel bars and ultra-high-performance concrete, which can bear forces together, and at the same time further improve the integrity of the wall.

Further, the concrete forming process in the step 3 is a vertical mold pouring forming process.

Embodiment one:

Step 1: Divide the wall 8 into several vertical partitions according to the method shown in Figure 6, and then carry out the following transformation operations one by one according to the order (1-2-3-4) from bottom to top (A-B-C-D): on the wall 8 Grooves are respectively cut out on the joints 82 on both sides, and support pads 2 are placed in the grooves; all the original mortar 1 in the joints 82 of the partition is removed by using a high-pressure water gun; ultra-high performance concrete mortar is used to The joints 82 on both sides of the wall 8 are jointed separately. The joints 82 after jointing include the jointing surface 33 and the jointing cavity 4 formed between the two jointing surfaces 3. In order to keep the wall 8 stable, Do not remove all the original mortar 1 on the entire wall at one time, this step is only carried out in the 8 partitions of one wall;

Step 2: Alternately arrange tie bars 5 and grouting holes 6 on the pointing surface 3 on the inner side of the wall 8 at an interval of 1.5m, and ensure that the tie bars in the upper and lower adjacent joints 82 are arranged in the shape of plum blossom piles; One end of the tie bar 5 is located in the joint 82 of the wall 8, and the other end extends out of the joint 82 of the wall 8 as a free end;

Inject grout into the joint cavity 4 through the grouting hole 6, pour layer by layer from bottom to top, pour hole by hole from one end of the wall to the other end of the wall, the grouting pressure is 0.2MPa, and block the pressure immediately after the grouting is completed Grouting holes 6 until all the grouting holes 6 are finished grouting, when the wall body 8 in this area forms the bearing capacity, repeat the above transformation steps for the wall body 8 in other areas, until the whole wall body 8 completes the grouting work;

After the whole body of wall 8 completes the reconstruction of the joints 82, a reinforcement mesh 7 is arranged on the inner surface of the body of wall 8 from bottom to top, and the free ends of each tie reinforcement 5 are tied to the nodes of the reinforcement mesh 7;

Step 3: The concrete is formed by vertical formwork pouring, and the wooden formwork is erected on the outside of the steel mesh 7 and poured with ultra-high-performance concrete with a thickness of 2 cm to integrate the anti-steel mesh 7 and the wall 8 .

In summary, the method for strengthening the walls of stone masonry houses provided by the present invention avoids the demolition and reconstruction of the original stone structure, and will not cause damage to the original structure; the reinforcement mesh is fixed by using the wall-crossing tie bars and is bound firmly with the reinforcement mesh , so that the inner side of the stone structure wall forms a steel skeleton, so that the wall and the steel mesh can bear the force together, which greatly improves the strength and earthquake resistance of the stone structure wall, further improves the integrity of the wall, and can well improve the stone structure. The deformation performance of the wall under shear and bending, and the construction is simple, economical and reasonable; the method of "pointing first, then grouting" for the wall joints greatly improves the fullness and aesthetics of the joints; reduces the earthquake , typhoon and other disasters caused the loss of personnel and property, increase the service life of the house, and provide farmers with a safer and more reliable living environment;

The original mortar in the joints is removed in a partitioned and staged manner to ensure the stability of the wall during construction;

Through the use of ultra-high performance concrete, the firm bond between the steel bar and the wall can be guaranteed;

By replacing the original mortar in the joints with ultra-high-strength concrete, the shear resistance of the wall is greatly improved;

The method of "pointing first, then grouting" through the wall joints has greatly improved the fullness and aesthetics of the joints; several grouting openings of the same layer of joints are applied layer by layer from bottom to top during grouting construction The hole-by-hole grouting method ensures the uniform grouting of the joints; the inner wall surface and the steel mesh form a whole through the bonding of the tie reinforcement and the ultra-high-performance concrete, which can be jointly stressed, and at the same time further improve the quality of the wall. of integrity.

The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in related technical fields, are all included in the same principle. Within the scope of patent protection of the present invention.

Claims (8)

1. A body of stone masonry body of wall reinforcement method, described body of wall comprises stone and the seam between stone, is characterized in that, comprises the steps: Step 1: Cut out grooves on the joints on both sides of the wall, and place supporting pads in the grooves; use high-pressure water guns to remove all the original mortar in the joints; use concrete mortar to clean the two sides of the wall The joints on the side are jointed separately, and the joints after jointing include the jointing surface and the jointing cavity formed between the two jointing surfaces; Step 2: Alternately arrange tie reinforcements and grouting holes on the pointing surface of the inner side of the wall, and ensure that the tie reinforcements in the upper and lower adjacent joints are arranged in the shape of plum blossom piles; one end of the tie reinforcement is located on the wall The other end sticks out of the wall joint and is the free end; Inject grout into the joint cavity through the grouting holes, block the grouting holes immediately after the grouting is completed, until all the grouting holes are grouted; After the whole wall has completed the transformation of the joints, the reinforcement mesh is laid on the side of the wall from bottom to top, and the free end of each tie reinforcement is tied to the node of the reinforcement mesh; Step 3: Spray concrete on the outside of the steel mesh to integrate the steel mesh and the wall. 2. The method for strengthening the wall of a stone masonry house according to claim 1, wherein in the first step, the wall is divided into several vertical partitions according to the size of the wall, and the joints are cleared by partitioning and staged operation All original mortar inside. 3. The method for strengthening the walls of stone masonry houses according to claim 1, characterized in that the pointing treatment in the step 1 is performed with ultra-high performance concrete. 4. The method for strengthening the wall of a stone masonry house according to claim 1, characterized in that, in said step 1, ultra-high performance concrete is used for grouting of the joint cavity. 5. The method for strengthening the walls of stone masonry houses according to claim 1, characterized in that the grouting sequence in said step 1 is poured layer by layer from bottom to top, from one end of the wall to the other end of the wall and poured hole by hole, The grouting pressure is not less than 0.2MPa. 6. The method for strengthening the wall of a stone masonry house according to claim 1, wherein the diameter of the steel bar is Φ12-Φ14. 7. The method for strengthening the wall of a stone masonry house according to claim 1, characterized in that the thickness of the concrete poured outside the reinforcement mesh in the step 3 is 0.2-2 cm. 8. The method for strengthening the walls of stone masonry houses according to claim 1, characterized in that, the concrete forming method in the step 3 is a vertical mold pouring method.