CN115726599B - Method for adding masonry wall constructional column by using embedded fiber rod - Google Patents
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Abstract
The invention discloses a method for adding masonry wall constructional columns by using embedded fiber rods, which comprises the following steps: making the end of the drawknot fiber rod into a bent hook shape; determining a position of a pre-added constructional column at the joint position of the longitudinal wall and the transverse wall, removing the plastering of the wall, cleaning the surface of the wall and exposing the brick masonry; removing the wall body with the depth of 60-80 mm at the position of the pre-added constructional column to form a vertical groove for embedding the longitudinal fiber rod and pouring concrete; cleaning the bonding material in the horizontal mortar joint along the height direction of the pre-added constructional column, wherein the cleaning depth is 60-80 mm; arranging a longitudinal fiber rod at the position of the vertical groove, and then arranging a drawknot fiber rod at the position of the cleaned horizontal mortar joint; the fiber rods are closely attached to the wall; binding the longitudinal fiber rods and the drawknot fiber rods; a constructional column peripheral formwork is additionally arranged along the preset direction; pouring concrete, and removing the mould after curing. The invention is suitable for the appearance protection of agricultural houses, ancient buildings and the like with masonry structures, and can obviously improve the integrity and the earthquake resistance of the wall.
Description
Technical Field
The invention relates to a method for earthquake resistance and reinforcement of a building structure, in particular to a method for adding masonry wall constructional columns by using embedded fiber rods.
Background
The masonry structure is a building structure for constructing a bearing structure wall body by mainly using members such as bricks or other building blocks and the like to match with mortar. The masonry structure is widely used in the aspects of low cost, convenient material acquisition, wide source distribution and the like. However, the basic materials and the connection mode of the masonry structure also determine the defects of poor structural ductility, small deformability, poor earthquake resistance and the like.
The addition of constructional columns to the masonry structure is an effective anti-seismic reinforcement method. At present, a common method for adding constructional columns is to add concrete buttress columns, and connect the constructional columns with the original wall body through wall penetrating steel bars, so as to achieve the reinforcing effect. However, the construction process is complex, the constructional column is additionally arranged on the outer side of the building, the appearance of the building is seriously influenced, and the steel bars are easily corroded due to the influence of the outside.
Disclosure of Invention
The invention aims to: aiming at the problems existing in the prior art, the invention provides a method for adding masonry wall constructional columns by using embedded fiber rods, which has simple construction process, does not need to adopt a reinforced bar structure, adds constructional columns on the outer side of a building, does not influence the appearance of the building, and does not have the problem that the reinforced bars are easily influenced by the outside to rust.
The technical scheme is as follows: the invention relates to a method for adding masonry wall constructional columns by using embedded fiber rods, which is suitable for adding constructional columns at the joint of T-shaped and L-shaped cross-shaped longitudinal and transverse walls, and comprises the following steps:
step one, making one or two side ends of the drawknot fiber rod into a bent hook shape;
step two, determining the position of a pre-added constructional column at the joint position of the longitudinal wall and the transverse wall, then removing the plastering of the wall, cleaning the surface of the wall, and clearly exposing the brickwork;
removing the wall body with the depth of 60-80 mm at the position of the pre-added constructional column to form a vertical groove for embedding the longitudinal fiber rod and pouring concrete;
step four, cleaning the bonding material in the horizontal mortar joint along the height direction of the pre-added constructional column, wherein the cleaning depth is 60-80 mm, and cleaning is performed to arrange drawknot fiber rods, and the drawknot fiber rods comprise transverse wall drawknot fiber rods and/or longitudinal wall drawknot fiber rods;
arranging a longitudinal fiber rod at the position of the vertical groove, and then arranging a drawknot fiber rod at the position of the cleaned horizontal mortar joint; the longitudinal fiber rods and the drawknot fiber rods are closely attached to the wall; binding the longitudinal fiber rods and the drawknot fiber rods;
step six, a constructional column peripheral support template is additionally arranged along the preset direction;
and seventh, pouring concrete, and removing the mould after curing.
Further, the diameter of the drawknot fiber rod is 6-8 mm; the diameter of the longitudinal fiber rod is 12-14 mm; the length of the hook at the end of the drawknot fiber rod is 30-40 mm.
Optionally, the end of the drawknot fiber rod is made into a hook shape by adopting a mechanical connection mode; the connecting piece of the mechanical connection is preferably an L-shaped plastic sleeve; the diameter of the L-shaped plastic sleeve is slightly larger than that of the drawknot fiber rod and is 8-9 mm.
Further, when the position of the pre-added constructional column is positioned at the internal corner of the joint of the longitudinal wall and the transverse wall, the brick wall extending 60-80 mm towards the longitudinal wall and the transverse wall respectively removes the plastering of the wall body, and the surface of the wall body is cleaned.
In the fourth step, firstly, cleaning bonding materials in the horizontal mortar joints at intervals of 4-5 leather bricks along the height direction of the transverse wall pre-added constructional columns; and then cleaning the horizontal mortar joints of the longitudinal wall on the upper layer of the horizontal mortar joints cleaned by the transverse wall so as to ensure that the tie fiber rods of the longitudinal wall and the transverse wall are staggered, and 1-layer bricks are staggered up and down.
In the fifth step, the longitudinal fiber rods and the tie fiber rods are tightly attached to the wall body by adopting mortar or epoxy resin adhesive.
Advantageous effects
Compared with the prior art, the invention has the following remarkable progress:
(1) The invention can effectively stabilize and protect the building structures of the masonry structure, such as the agricultural houses, historic buildings and the like, and the added masonry wall constructional column does not occupy space and does not influence the appearance of the building.
(2) The method for replacing the reinforcing steel bars by using the fiber rods can effectively avoid the problem of corrosion of the reinforcing steel bars caused by climbing the wall body in the later use process.
(3) According to the invention, the longitudinal fiber rods are embedded while the drawknot fiber rods are arranged, so that the integrity between the newly-added constructional column and the wall body is effectively improved.
(4) The end of the drawknot fiber rod is made into the bent hook shape, so that the connection performance between the newly-added constructional column and the wall body is effectively improved, and the integrity and the earthquake resistance of the house are improved.
(5) According to the invention, high-performance concrete is poured at four corners of the pre-added constructional column, so that the economical benefit is considered, and meanwhile, the integrity and the earthquake resistance of the wall are obviously improved by virtue of the mechanical properties of the high-performance concrete.
Drawings
FIG. 1 is a schematic connection diagram of a drawknot fiber rod with a hook-shaped end;
FIG. 2 is a schematic view of an additional column for the junction of a T-shaped cross wall;
FIG. 3 is a schematic view of an additional column for the junction of an "L" shaped cross wall;
FIG. 4 is a schematic view of a structure with additional columns at the cross-shaped cross-wall joints;
reference numerals illustrate:
1: a transverse wall; 2: longitudinal wall; 3: tying fiber rods on the transverse wall; 4: a longitudinal wall drawknot fiber rod; 5: a longitudinal fiber rod; 6: concrete; 7: a fiber rod connector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a method for adding constructional columns by using embedded fiber rods, which is characterized in that the constructional columns are added by using the embedded fiber rods, namely a structure formed by digging partial walls, embedding longitudinal fiber rods and drawknot fiber rods and pouring high-performance concrete at the joint positions of the original longitudinal and transverse walls. In the embodiment of the invention, the basalt fiber rod is taken as an example, the production cost of the basalt fiber rod is lower than that of a carbon fiber rod, and the strength and the elastic modulus of the basalt fiber rod are higher than those of a glass fiber rod; it should be noted that the fiber rods of the present invention include, but are not limited to basalt fiber rods, and that in practical applications, different types of fiber rods may be replaced according to engineering requirements.
Example 1:
as shown in fig. 2, the upper straight section is taken as the outer side of the transverse wall 1, and the lower corner portion is taken as the inner corner portion of the transverse wall.
A method for adding constructional columns to a T-shaped longitudinal and transverse wall by utilizing embedded fiber rods comprises the following specific construction steps:
(1) The method comprises the steps of preprocessing a drawknot fiber rod, wherein two ends of a transverse wall drawknot fiber rod 3 are bent, and one end of a longitudinal wall drawknot fiber rod 4 is bent. Optionally, the end of the drawknot fiber rod is made into a hook shape by adopting a mechanical connection mode; specifically, the mechanically connected connector may be an L-shaped plastic sleeve with a diameter slightly larger than that of the drawknot fiber rod, which is tightly adhered to the fiber rod connector 7 by an epoxy adhesive to form a hook at the end.
(2) Determining the position of a pre-added constructional column at the joint position of the T-shaped longitudinal wall, wherein the position of the pre-added constructional column comprises 2 joints (internal corner positions) of the outer side of the transverse wall 1 and the longitudinal wall 2 and 2 joints (internal corner positions) of the inner side of the transverse wall 1 and the longitudinal wall 2; and removing the wall plastering of the pre-added constructional column part, cleaning by using a high-pressure water gun, and clearly exposing the brick masonry.
(3) The wall body with the depth of 60-80 mm is removed at 2 junctions of the outer side of the transverse wall 1 and the longitudinal wall 2, so that 2 rectangular grooves shown in fig. 2 are formed.
(4) At the internal corner of the joint of the longitudinal wall and the transverse wall, the brick wall removing range of 60-80 mm extends towards the longitudinal wall 2 and the transverse wall 1 respectively, and the removing depth of the wall is 60-80 mm, so that 2L-shaped grooves shown in figure 2 are formed.
(5) Cleaning horizontal mortar joints at the joint of the T-shaped longitudinal and transverse walls: firstly, cleaning bonding materials in a horizontal mortar joint at intervals of 4-5 leather bricks along the height direction of a pre-added constructional column on the outer side of a transverse wall 1, and flushing the bonding materials by a high-pressure water gun, wherein the cleaning depth is 60-80 mm; then cleaning the horizontal mortar joints on the inner side of the transverse wall 1 on the same horizontal plane, wherein the cleaning depth is also 60-80 mm, when the joint is cleaned to the internal corner part of the transverse wall, the joint extends 80mm towards the longitudinal wall 2, and the binding materials of the longitudinal wall 2 with the same horizontal height are cleaned in the range so as to pass through the transverse wall and tie the fiber rod 3; finally, the horizontal mortar joints on two sides of the longitudinal wall 2 are cleaned on the upper layer of the horizontal mortar joints cleaned by the transverse wall 1, the cleaning depth is also 60-80 mm, when the joint is cleaned to the internal corner part of the joint of the longitudinal wall and the transverse wall, the joint extends 80mm to two sides along the transverse wall 1 respectively, and the bonding materials of the transverse wall 1 with the same horizontal height are cleaned within the range so as to pass through the longitudinal wall and tie the fiber rod 4.
(6) Firstly, arranging a longitudinal fiber rod 5 at a wall body slotting position formed in the step (3) and the step (4) (fig. 2-4 are wall body top views, a black point indicated by a reference numeral 5 is a longitudinal fiber rod), then arranging a drawknot fiber rod at a cleaned horizontal mortar joint position of the transverse wall 1 and the longitudinal wall 2, and combining mortar or epoxy resin adhesive to enable the fiber rod (the transverse wall drawknot fiber rod 3/the longitudinal wall drawknot fiber rod 4/the longitudinal fiber rod 5) to be closely attached to the wall body.
(7) The longitudinal fiber rods 5 and the drawknot fiber rods are bound by nylon binding bands.
(8) And (3) along the periphery of the pre-added constructional column, tightly attaching to the wall formwork.
(9) Pouring high-performance concrete 6, and removing the mould after curing for 2-3 days.
Example 2:
as shown in fig. 3, the upper part of the transverse wall 1 and the right side of the longitudinal wall 2 are taken as the outer side of the wall, and the rest are taken as the inner side of the wall.
A method for adding constructional columns to L-shaped longitudinal and transverse walls by using embedded fiber rods comprises the following specific construction steps:
(1) Preprocessing the tie fiber rods to enable the ends of one side of the transverse wall tie fiber rods 3 and one side of the longitudinal wall tie fiber rods 4 to be bent; optionally, the end of the drawknot fiber rod is made into a hook shape by adopting a mechanical connection mode; specifically, the mechanically connected connector may be an L-shaped plastic sleeve with a diameter slightly larger than that of the drawknot fiber rod, which is tightly adhered to the fiber rod connector 7 by an epoxy adhesive to form a hook at the end.
(2) Determining the position of a pre-added constructional column at the joint position of the L-shaped longitudinal and transverse walls, wherein the position of the pre-added constructional column comprises 3 joints (internal corner positions) at the outer sides of the transverse walls 1 and the outer sides of the longitudinal walls 2 and 1 joint (internal corner position) at the inner sides of the transverse walls 1 and the inner sides of the longitudinal walls 2; and then removing the wall surfaces of the four parts, and cleaning by using a high-pressure water gun to clearly expose the brick masonry.
(3) The wall body with the depth of 60-80 mm is removed at 3 junctions of the outer side of the transverse wall 1 and the outer side of the longitudinal wall 2, and 3 rectangular grooves shown in fig. 3 are formed.
(4) At the internal corner of the joint of the longitudinal wall and the transverse wall, the brick wall removing range of 60-80 mm extends towards the longitudinal wall 2 and the transverse wall 1 respectively, and the removing depth of the wall is 60-80 mm, so that 1L-shaped groove shown in figure 3 is formed.
(5) Cleaning horizontal mortar joints at the joint of L-shaped longitudinal and transverse walls: firstly, cleaning bonding materials in horizontal mortar joints at intervals of 4-5 leather bricks along the height direction of a pre-added constructional column on the outer side of a transverse wall 1, flushing the bonding materials by using a high-pressure water gun, cleaning the horizontal mortar joints on the inner side of the transverse wall 1 on the same horizontal plane, wherein the cleaning depth is also 60-80 mm, extending the bonding materials to the longitudinal wall 2 by 80mm when cleaning the internal corner parts at the joint of the transverse wall and the transverse wall, and cleaning the bonding materials of the longitudinal wall 2 at the same horizontal height within the range so as to pass through the transverse wall to tie fiber rods 3; and then the horizontal mortar joint on the outer side of the longitudinal wall 2 is cleaned on the upper layer of the horizontal mortar joint cleaned by the transverse wall 1, the cleaning depth is 60-80 mm, finally the horizontal mortar joint on the inner side of the longitudinal wall 2 is cleaned on the same horizontal plane, the cleaning depth is also 60-80 mm, when the joint is cleaned to the internal corner part of the cross wall, the joint extends for 80mm along the direction of the transverse wall 1, and the bonding material of the transverse wall 1 with the same horizontal height is cleaned within the range so as to pass through the longitudinal wall and tie the fiber rod 4.
(6) Firstly, arranging longitudinal fiber rods 5 at the positions of rectangular grooves and L-shaped grooves formed in the step (3) and the step (4), then arranging drawknot fiber rods at the positions of horizontal mortar joints of the cleaned transverse wall 1 and the cleaned longitudinal wall 2, and combining mortar or epoxy resin adhesive to enable the fiber rods to be closely attached to a wall body.
(7) The longitudinal fiber rods 5 and the drawknot fiber rods are bound by nylon binding bands.
(8) And (3) along the periphery of the pre-added constructional column, tightly attaching to the wall formwork.
(9) Pouring high-performance concrete 6, and removing the mould after curing for 2-3 days.
Example 3:
as shown in fig. 4, the cross wall 1 and the longitudinal wall 2 meet to form 4 corners.
A method for adding constructional columns to a cross-shaped longitudinal and transverse wall by utilizing embedded fiber rods comprises the following specific construction steps:
(1) Pretreating the tie fiber rod to enable two ends of the transverse wall tie fiber rod 3 and the longitudinal wall tie fiber rod 4 to be in a hook shape; optionally, the end of the drawknot fiber rod is made into a hook shape by adopting a mechanical connection mode; specifically, the mechanically connected connector may be an L-shaped plastic sleeve with a diameter slightly larger than that of the drawknot fiber rod, which is tightly adhered to the fiber rod connector 7 by an epoxy adhesive to form a hook at the end.
(2) The position of a pre-added constructional column is determined at the joint position of the cross-shaped longitudinal and transverse walls, and the position is 4 internal corner positions; and then removing the wall surfaces at the 4 internal corners, and cleaning by using a high-pressure water gun to clearly expose the brick masonry.
(3) At the internal corner of the joint of the longitudinal wall and the transverse wall, the brick wall removing range of 60-80 mm extends towards the longitudinal wall 2 and the transverse wall 1 respectively, and the removing depth of the wall is 60-80 mm, so that four L-shaped grooves as shown in figure 4 are formed.
(4) Cleaning horizontal mortar joints at the joint of the cross-shaped longitudinal and transverse walls: firstly, cleaning bonding materials in horizontal mortar joints at intervals of 4-5 leather bricks along the height direction of pre-added constructional columns on the inner side and the outer side of a transverse wall 1, flushing the materials by using a high-pressure water gun, wherein the cleaning depth is 60-80 mm, and when the materials are cleaned to the internal corner part of the joint of the transverse wall, the materials extend to 80mm along the longitudinal wall 2 to the two sides respectively, and the bonding materials of the longitudinal wall 2 with the same horizontal height are cleaned within the range so as to pass through the transverse wall to tie fiber rods 3; then, the horizontal mortar joints on the inner side and the outer side of the longitudinal wall 2 are cleaned on the upper layer of the horizontal mortar joints cleaned by the transverse wall 1, the cleaning depth is 60-80 mm, when the joint is cleaned to the internal corner part of the joint of the longitudinal wall and the transverse wall, the joint extends 80mm to the two sides along the transverse wall 1 respectively, and the bonding materials of the transverse wall 1 with the same horizontal height are cleaned within the range so as to pass through the longitudinal wall and tie the fiber rod 4.
(5) Firstly, arranging longitudinal fiber rods 5 at the positions of four L-shaped grooves, then arranging drawknot fiber rods at the positions of the horizontal mortar joints of the cleaned transverse wall 1 and the cleaned longitudinal wall 2, and combining mortar or epoxy resin adhesive to enable the fiber rods to be closely attached to the wall body.
(6) The longitudinal fiber rods 5 and the drawknot fiber rods are bound by nylon binding bands.
(7) And (3) along the periphery of the pre-added constructional column, tightly attaching to the wall formwork.
(8) Pouring high-performance concrete 6, and removing the mould after curing for 2-3 days.
In examples 1-3, the longitudinal fiber rod diameter was 12-14 mm; the diameter of the drawknot fiber rod is 6-8 mm; the diameter of the L-shaped plastic sleeve is 8-9 mm; the length of the hook at the end of the drawknot fiber rod is 30-40 mm.
The examples described above represent only a few embodiments of the present invention and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (8)
1. A method for adding masonry wall constructional columns using embedded fiber rods, comprising:
firstly, preprocessing a drawknot fiber rod, wherein one side or two side ends of the drawknot fiber rod are in a hook shape, and hooks face to the center line of a wall body;
step two, determining the position of the pre-added constructional column at the joint position of the longitudinal wall and the transverse wall, then removing the wall plastering of the position of the pre-added constructional column, cleaning the surface of the wall, and clearly exposing the brick masonry;
removing the wall body with the depth of 60-80 mm at the position of the pre-added constructional column to form a vertical groove for embedding the longitudinal fiber rod and pouring concrete; step four, cleaning the bonding material in the horizontal mortar joint along the height direction of the pre-added constructional column, wherein the cleaning depth is 60-80 mm, and cleaning is performed to arrange drawknot fiber rods, and the drawknot fiber rods comprise transverse wall drawknot fiber rods and/or longitudinal wall drawknot fiber rods; specifically, firstly, cleaning bonding materials in horizontal mortar joints at intervals of 4-5 leather bricks along the height direction of a transverse wall pre-added constructional column, and then cleaning the horizontal mortar joints of a longitudinal wall on the upper layer of the horizontal mortar joints cleaned by the transverse wall, so that the tie fiber rods of the transverse wall are in staggered arrangement, wherein the staggered arrangement is that 1 leather brick is staggered up and down;
arranging a longitudinal fiber rod at the position of the vertical groove, and then arranging a drawknot fiber rod at the position of the cleaned horizontal mortar joint; the longitudinal fiber rods and the drawknot fiber rods are closely attached to the wall; binding the longitudinal fiber rods and the drawknot fiber rods;
step six, a constructional column peripheral support template is additionally arranged along the preset direction;
pouring concrete, and removing the mould after curing;
the longitudinal and transverse walls comprise T-shaped longitudinal and transverse walls, L-shaped longitudinal and transverse walls and cross-shaped longitudinal and transverse walls;
for a T-shaped longitudinal wall and a transverse wall, the position of the pre-added constructional column comprises 2 junctions between the outer side of the transverse wall and the longitudinal wall and 2 junctions between the inner side of the transverse wall and the longitudinal wall; removing the wall body with the depth of 60-80 mm at 2 junctions of the outer side of the transverse wall and the longitudinal wall to form 2 rectangular grooves; at the internal corner of the joint of the longitudinal wall and the transverse wall, respectively extending a brick wall removing range of 60-80 mm towards the longitudinal wall and the transverse wall, and forming 2L-shaped grooves, wherein the removing depth of the wall is 60-80 mm;
for the L-shaped longitudinal and transverse walls, the part of the pre-added constructional column comprises 3 junctions at the outer sides of the transverse walls and the outer sides of the longitudinal walls, and 1 junction at the inner sides of the transverse walls and the inner sides of the longitudinal walls; removing the wall body with the depth of 60-80 mm at 3 junctions of the outer side of the transverse wall and the outer side of the longitudinal wall to form 3 rectangular grooves; at the internal corner of the joint of the longitudinal wall and the transverse wall, respectively extending a brick wall removing range of 60-80 mm towards the longitudinal wall and the transverse wall, and forming 1L-shaped groove, wherein the removing depth of the wall is 60-80 mm;
for the cross-shaped longitudinal and transverse walls, the position of the pre-added constructional column is 4 internal corner positions; and at the internal corner of the joint of the longitudinal wall and the transverse wall, the brick wall removing range of 60-80 mm extends towards the longitudinal wall and the transverse wall respectively, and the removing depth of the wall is 60-80 mm, so that 4L-shaped grooves are formed.
2. The method for adding masonry wall constructional columns using embedded fiber rods according to claim 1, wherein the diameter of the tie fiber rods is 6-8 mm.
3. The method of adding masonry wall constructional columns using embedded fiber rods of claim 1 wherein the longitudinal fiber rods are 12-14 mm in diameter.
4. The method for adding masonry wall constructional columns by using embedded fiber rods according to claim 1, wherein the hook length of the end of the tie fiber rod is 30-40 mm.
5. The method for adding masonry wall constructional columns using embedded fiber rods according to claim 1 or 4, wherein in the first step, the ends of the tie fiber rods are made into a hook shape by means of mechanical connection.
6. The method of adding masonry wall constructional columns using embedded fiber rods of claim 5 wherein the mechanically connected connectors are L-shaped plastic bushings.
7. The method for adding masonry wall constructional columns using embedded fiber rods of claim 6 wherein the L-shaped plastic sleeve has a diameter of 8-9 mm.
8. The method for adding masonry wall constructional columns using embedded fiber rods according to claim 1, wherein in the fifth step, the longitudinal fiber rods and the tie fiber rods are attached to the wall body by using mortar or epoxy resin adhesive.
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