CN106703434B - Raw soil wall reinforcing apparatus - Google Patents
Raw soil wall reinforcing apparatus Download PDFInfo
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- CN106703434B CN106703434B CN201611262752.0A CN201611262752A CN106703434B CN 106703434 B CN106703434 B CN 106703434B CN 201611262752 A CN201611262752 A CN 201611262752A CN 106703434 B CN106703434 B CN 106703434B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0222—Replacing or adding wall ties
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Abstract
The invention discloses a raw soil wall reinforcing device which comprises a high-ductility concrete combined brick column, a high-ductility concrete surface layer, T-shaped tie bars, horizontal steel bars and high-ductility concrete shear keys. A vertical groove and a horizontal groove are formed in the raw soil wall, high-ductility concrete shear keys are uniformly distributed in the vertical groove and the horizontal groove, and T-shaped tie bars and high-ductility concrete combined brick columns are arranged in the vertical groove; horizontal reinforcing steel bars are arranged in the horizontal grooves, high-ductility concrete shear keys and T-shaped tie reinforcing steel bars are further arranged in the horizontal grooves, and high-ductility concrete surface layers are coated on the surfaces of the vertical grooves and the horizontal grooves. This reinforcing apparatus adopts and adds the brick post, and horizontal reinforcement and paint high ductility concrete surface course and consolidate the immature soil wall, and high ductility concrete surface course bonds well with the brick post, undertakes vertical load jointly with the brick post, and surface course and brick post produce horizontal restraint effect to the immature soil wall, prevent that it from taking place too big deformation, have improved the bearing capacity and the anti-seismic performance of wall body.
Description
Technical Field
The invention relates to the technical field of earthquake resistance and reinforcement of building structures, in particular to a raw soil wall reinforcing device.
Background
The raw soil wall is an ancient building mode, and the buildings exist and are used in partial areas of China. However, the wall material has low strength, large brittleness and poor deformation capability, the bearing capacity is rapidly reduced under the action of an earthquake, and collapse is easy to occur, so that serious economic loss and casualties are caused. Therefore, an effective measure for improving the earthquake resistance, especially increasing the ductility, of the raw soil wall is urgently needed to meet the safe use requirement of the raw soil wall.
The construction of the earth wall buildings is long-term, so that some buildings with complete integral structures and epoch-like appearance have certain preservation value. Reinforcing the existing raw soil wall building is also a way to preserve the raw soil wall building. The existing reinforcement technology often damages the vertical face of the wall body, damages the outer vertical face of the wall body and reduces the preservation value of the building.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a raw soil wall reinforcing device.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
a raw soil wall reinforcing device comprises brick columns, a high-ductility concrete surface layer, a horizontal high-ductility concrete belt, T-shaped tie bars, horizontal steel bars and high-ductility concrete shear keys;
the surface of the raw soil wall is provided with a plurality of horizontal grooves and vertical grooves;
the bottom of the horizontal groove is provided with a hole, the axial direction of the hole is vertical to the wall surface of the raw soil wall, the holes with different cross sections are arranged along the axial direction of the hole, the holes are respectively provided with a first cross section and a second cross section towards the interior of the wall body, and the diameter of the first cross section is smaller than that of the second cross section;
high-ductility concrete is poured in the holes to form the high-ductility concrete shear keys; t-shaped tie bars are embedded in the high-ductility concrete shear keys;
horizontal steel bars are placed in the horizontal grooves and tied together with the T-shaped tie bars;
pouring high-ductility concrete into the horizontal groove to form a horizontal high-ductility concrete belt, wherein the horizontal high-ductility concrete belt wraps the horizontal steel bars and the T-shaped tie steel bars;
the bottom of the vertical groove is provided with a hole, the axial direction of the hole is perpendicular to the wall surface of the raw soil wall, holes with different cross sections are arranged along the axial direction of the hole, the hole faces the inside of the wall body and is provided with a third cross section and a fourth cross section respectively, and the diameter of the third cross section is smaller than that of the fourth cross section; pouring high-ductility concrete in the hole to form a high-ductility concrete shear key;
brick columns are built in the vertical grooves, and the height of each brick column is equal to that of the raw soil wall;
t-shaped tie bars are embedded in the high-ductility concrete shear keys at the bottoms of the vertical grooves, and one ends of the T-shaped tie bars, which are provided with end reinforcing steel bars, extend out of the brick columns;
the part, which is not grooved, of the surface of the raw soil wall is provided with a hole, the axial direction of the hole is vertical to the wall surface of the raw soil wall, the holes with different cross sections are arranged along the axial direction of the hole, the hole faces the interior of the wall body and is provided with a fifth cross section and a sixth cross section respectively, and the diameter of the fifth cross section is smaller than that of the sixth cross section; pouring high-ductility concrete in the hole to form a high-ductility concrete shear key;
t-shaped tie bars are embedded in the high-ductility concrete shear keys, and one ends of the T-shaped tie bars, which are provided with end reinforcing steel bars, protrude out of the wall surface of the raw soil wall;
coating a high-ductility concrete surface layer on the outer surface of the raw soil wall, wherein the thickness of the high-ductility concrete surface layer is 15-30 mm; the high-ductility concrete surface layer coats the brick column, the T-shaped tie bars extending out of the surface of the brick column, the T-shaped tie bars protruding out of the wall surface of the raw soil wall and the horizontal high-ductility concrete belt.
Optionally, the width of the horizontal groove is 150-300 mm, the depth is 30-100 mm, and the distance between adjacent horizontal grooves is 900-1500 mm.
Optionally, the depth of the hole is 100-150 mm; the diameters of the first cross section, the third cross section and the fifth cross section are 25-50 mm; the diameters of the second cross section, the fourth cross section and the sixth cross section are 80-120 mm.
Optionally, the diameter of the T-shaped tie bar is 6-10 mm.
Optionally, the horizontal distance between adjacent holes in the horizontal groove is 600-1000 mm.
Optionally, the width of each vertical groove is 240-620 mm, the depth of each vertical groove is 150-400 mm, and the distance between every two adjacent vertical grooves is 1000-1500 m.
Optionally, the horizontal distance of adjacent holes in the vertical groove is 120-240 mm, and the vertical distance is 300-600 mm.
Optionally, the horizontal distance between adjacent holes of the ungrooved part on the surface of the raw soil wall is 600-1000 mm, and the vertical distance is 600-1000 mm.
In addition, the length of the T-shaped tie bars in the vertical grooves embedded into the high-ductility concrete shear keys is 100-150 mm, and the length of the T-shaped tie bars extending out of the brick columns is half of the thickness of the high-ductility concrete surface layers.
The high-ductility concrete comprises the components of cement, fly ash, sand, PVA fiber, a water reducing agent and water; the cement comprises the following components in percentage by mass: fly ash: sand: water 1: 1: 0.76: 0.58;
the volume mixing amount of the PVA fiber is 1.5 percent by taking the total volume of the cement, the fly ash, the sand and the water which are uniformly mixed as a base number; the addition amount of the water reducing agent is 0.8 percent of the total mass of the cement, the fly ash and the silica fume.
Compared with the prior art, the invention has the following characteristics:
(1) this reinforcing apparatus adopts to add the brick post and to paint high ductility concrete surface course and consolidate the immature soil wall, and high ductility concrete surface course bonds well with the brick post, bears vertical load jointly with the brick post, and surface course and brick post produce the transverse restraint effect to the immature soil wall, prevent that it from taking place too big deformation, have improved the bearing capacity and the anti-seismic performance of wall body. The method has the advantages of simple and convenient construction, lower cost and better ductility.
(2) This reinforcing apparatus's horizontal high-ductility concrete area forms the structure of similar frame with vertical high-ductility concrete combination post, has strengthened the wholeness of wall body.
(3) This reinforcing apparatus adopts high ductility concrete shear key, has increased the ability of horizontal high ductility concrete area and wall body combined work promptly, can prevent again that horizontal high ductility concrete area from taking place to peel off with the wall body. The high-ductility concrete shear key can embed and anchor T-shaped tie bars, and solves the problem that the steel bars penetrate through the wall body to damage the external surface in the traditional mode.
(4) After the reinforcement of the reinforcement device is finished, the thickness of the wall body is not increased, the inner vertical surface of the wall body can be kept flat without protrusion, and the later-stage decoration is facilitated.
(5) The reinforcing device can be only used for reinforcing the inner side of the wall body, and does not change the outer vertical surface of the wall body.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic elevation view of the present invention.
FIG. 2 is a cross-sectional view of the grooves and holes on the surface of the raw soil wall according to the present invention.
3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 of 3 a 3 groove 3 and 3 a 3 hole 3 A 3- 3 A 3 on 3 the 3 surface 3 of 3 a 3 raw 3 soil 3 wall 3 according 3 to 3 the 3 present 3 invention 3. 3
FIG. 4 is a cross-sectional view of a groove and a hole B-B on the surface of a raw soil wall according to the present invention.
FIG. 5 is a cross-sectional view of a groove and a hole C-C on the surface of a raw soil wall according to the present invention.
FIG. 6 is a cross-sectional view of holes F-F on the surface of a raw soil wall according to the present invention.
Fig. 7 is a top view of the present invention.
3 fig. 3 8 3 is 3 a 3 cross 3- 3 sectional 3 view 3 a 3- 3 a 3 of 3 the 3 present 3 invention 3. 3
Fig. 9 is a B-B cross-sectional view of the present invention.
The codes in the figure represent: 1-a raw soil wall; 2-brick column; 3-high ductility concrete surface course; 4-T-shaped tie bars; 5-horizontal steel bars; 6-high ductility concrete shear bond; 7-horizontal high-ductility concrete strips, 8-holes; 801-first cross section; 802-second cross section; 803-third cross section; 804-a fourth cross-section; 805-fifth cross section; 806-sixth cross section; 9-horizontal groove; 10-vertical grooves.
Detailed Description
The high-ductility concrete comprises the components of cement, fly ash, sand, PVA fiber, a water reducing agent and water; wherein, by mass percent, the cement: fly ash: sand: water 1: 1: 0.76: 0.58; the volume mixing amount of the PVA fiber is 1.5 percent by taking the total volume of the cement, the fly ash, the sand and the water which are uniformly mixed as a base number; the addition amount of the water reducing agent is 0.8 percent of the total mass of the cement, the fly ash and the silica fume.
The stirring method of the high-ductility concrete comprises the following steps: firstly, pouring cement, fly ash and sand into a forced mixer and dry-mixing for 2-3 minutes; then adding a water reducing agent and 80% of water; then adding PVA fiber, stirring for 2 minutes, adding the residual 20% of water, and stirring for 1-2 minutes.
Example (b):
the concrete construction steps of the invention are as follows:
the method comprises the following steps: a vertical groove and a horizontal groove are formed in the raw soil wall;
step two: drilling holes with enlarged heads inside in the vertical grooves and the horizontal grooves by using a drilling machine, embedding T-shaped connecting reinforcing steel bars in the holes, and pouring high-ductility concrete into the holes;
step three: building brick columns with the same depth and width as the grooves in the vertical grooves, and ensuring that the T-shaped connecting steel bars penetrate through the vertical seams of the brick columns in the building process;
step four: and placing horizontal reinforcing steel bars in the horizontal grooves, binding the horizontal reinforcing steel bars with the T-shaped connecting reinforcing steel bars together, and filling high-ductility concrete.
Step five: and (3) coating a high-ductility concrete surface layer on the whole wall surface of the raw soil wall.
Referring to fig. 1 to 4, the raw soil wall 1 to be reinforced in this embodiment has a length of 4.5m, a height of 3m, and a thickness of 500 mm. The wall body that this embodiment provided includes: the concrete wall comprises a raw soil wall 1, brick columns 2, a high-ductility concrete surface layer 3, T-shaped tie bars 4 and high-ductility concrete shear keys 6, wherein vertical grooves with the width of 490mm and the depth of 180mm are formed in the raw soil wall 1 every 1500mm along the horizontal direction, and horizontal grooves with the height of 300mm and the depth of 30mm are formed in the wall body every 1000 mm; drilling 2 holes with the diameter of 50mm in the vertical groove every 500mm along the height of the wall, wherein the distance between the holes is 240mm, high-ductility concrete is filled in the holes to form a high-ductility concrete shear key 6, a T-shaped connecting steel bar 4 with the diameter of 6mm is placed in the high-ductility concrete shear key 6, one end of an endless steel bar of the T-shaped connecting steel bar 4 is embedded in the high-ductility concrete shear key 6, and one end with the endless steel bar protrudes out of the wall surface by 15 mm; drilling holes with diameters of 50mm and enlarged heads at the bottom of the horizontal groove every 500mm along the length of the wall, filling high-ductility concrete in the holes to form high-ductility concrete shear keys 6, placing T-shaped connecting reinforcing steel bars 4 with diameters of 6mm in the high-ductility concrete shear keys 6, burying one ends of the T-shaped connecting reinforcing steel bars 4 without end reinforcing steel bars into the high-ductility concrete shear keys 6, and enabling one ends of the end reinforcing steel bars to protrude out of the wall surface by 15 mm; adopting M5.0 cement mortar to masonry a 490mm wide brick column 2 with a thickness of 180mm to the bottom of the floor slab in the vertical groove, wherein the strength grade of the brick is MU10, ensuring that the T-shaped connecting steel bar 4 passes through the vertical joint of the brick column in the masonry process, and simultaneously filling the gap between the brick column 2 and the raw soil wall 1 with the cement mortar; placing horizontal steel bars in the horizontal grooves, binding the horizontal steel bars with end steel bars of the T-shaped steel bars together, enabling the horizontal steel bars to pass through horizontal seams of the brick columns 2, and filling the horizontal grooves with high-ductility concrete to form horizontal high-ductility concrete belts 7; and finally, coating a high-ductility concrete surface layer 3 on the whole wall surface, wherein the thickness of the high-ductility concrete surface layer 3 is 30mm, and the high-ductility concrete surface layer 3 coats the brick column and the horizontal high-ductility concrete belt 7.
The above embodiment: the maximum grain size of sand used in the high-ductility concrete is 1.26 mm; the PVA fiber is PA600 fiber produced by Shanghai Royo science and technology Limited, the length is 8mm, the diameter is 26 μm, the tensile strength is 1200MPa, and the elastic modulus is 30 GPa; the cement is P.O.42.5R portland cement; the fly ash is I-grade fly ash; the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent with the water reducing rate of more than 30 percent, and the polycarboxylic acid water reducing agent is produced by Jiangsu Bott new material Co
A type polycarboxylic acid high-performance water reducing agent.
The high-ductility concrete is a building material with high strength, high ductility, high durability and high damage resistance, and the bearing capacity and the deformability can be improved by reinforcing the raw soil wall body by adopting the high-ductility concrete surface layer. After the brick columns are additionally arranged in the wall body of the raw soil wall and the surfaces of the brick columns are coated with the high-ductility concrete surface layer, the anti-seismic performance and the deformation capacity are improved, a constraint effect can be formed in the wall body of the raw soil wall, and the anti-seismic performance of the raw soil wall is improved; the horizontal high-ductility concrete belt strengthens the transverse constraint effect on the wall surface and improves the deformation capacity of the wall body. The high-ductility concrete shear key increases the capacity of the joint work of the high-ductility concrete surface layer and the wall body, and prevents the high-ductility concrete surface layer from being stripped from the wall body. The reinforcing device can be used for reinforcing only the inner side of the wall body without changing the outer vertical surface of the wall body, and is beneficial to storing valuable raw soil wall buildings.
This reinforcing apparatus adopts to add the brick column and paints high ductility concrete surface course and consolidate the immature soil wall. Because the high-ductility concrete surface layer and the brick columns have good bonding performance, the brick columns can be combined together to work together; the combined brick column formed by the high-ductility concrete surface layer and the brick columns has a restraint effect on deformation of the earth wall, so that brittle deformation of the earth wall is prevented, and the bearing capacity and the anti-seismic performance of the wall are improved. Horizontal high-ductility concrete area forms the structure of similar frame with vertical high-ductility concrete combination post, has strengthened the wholeness of wall body.
The construction process is simple, convenient and quick, the operation is easy, and the construction mode can not increase the thickness of the wall body.
Claims (10)
1. The utility model provides a raw soil wall reinforcing apparatus which characterized in that: the concrete shear-resistant brick comprises brick columns (2), a high-ductility concrete surface layer (3), horizontal high-ductility concrete belts (7), T-shaped tie bars (4), horizontal steel bars (5) and high-ductility concrete shear-resistant keys (6);
the surface of the raw soil wall (1) is provided with a plurality of horizontal grooves (9) and vertical grooves (10);
the bottom of the horizontal groove (9) is provided with a hole (8), the hole (8) is axially vertical to the wall surface of the raw soil wall (1), holes with different cross sections are axially arranged along the hole (8), the holes face the interior of the wall body and are respectively provided with a first cross section and a second cross section, and the diameter of the first cross section (801) is smaller than that of the second cross section (802);
high-ductility concrete is poured into the hole (8) to form a high-ductility concrete shear key (6); t-shaped tie bars (4) are embedded in the high-ductility concrete shear keys (6);
horizontal steel bars (5) are placed in the horizontal grooves (9), and the horizontal steel bars (5) and the T-shaped tie steel bars (4) are bound together;
high-ductility concrete is poured into the horizontal groove (9) to form a horizontal high-ductility concrete belt (7), and the horizontal steel bar (5) and the T-shaped tie steel bar (4) are coated by the horizontal high-ductility concrete belt (7);
the bottom of the vertical groove (10) is provided with a hole (8), the hole (8) is axially vertical to the wall surface of the raw soil wall (1), holes with different cross sections are axially arranged along the hole (8), a third cross section (803) and a fourth cross section (804) are respectively arranged towards the interior of the wall body, and the diameter of the third cross section (803) is smaller than that of the fourth cross section (804); high-ductility concrete is poured in the hole (8) to form the high-ductility concrete shear key (6);
brick columns (2) are built in the vertical grooves (10), and the height of each brick column (2) is equal to that of the raw soil wall (1);
t-shaped tie bars (4) are embedded in the high-ductility concrete shear keys (6) at the bottoms of the vertical grooves (10), and one ends of the T-shaped tie bars (4) with end reinforcing steel bars extend out of the brick columns (2);
the non-grooved part of the surface of the raw soil wall (1) is provided with a hole (8), the hole (8) is axially vertical to the wall surface of the raw soil wall (1), holes with different cross sections are axially arranged along the hole (8), the holes face the interior of the wall body and are respectively provided with a fifth cross section (805) and a sixth cross section (806), and the diameter of the fifth cross section (805) is smaller than that of the sixth cross section (806); high-ductility concrete is poured in the hole (8) to form the high-ductility concrete shear key (6);
t-shaped tie bars (4) are embedded in the high-ductility concrete shear keys (6), and one ends of the T-shaped tie bars (4) with end reinforcing steel bars protrude out of the wall surface of the raw soil wall (1);
the outer surface of the raw soil wall (1) is coated with a high-ductility concrete surface layer (3), and the thickness of the high-ductility concrete surface layer (3) is 15-30 mm; the brick column (2), the T-shaped tie bars (4) extending out of the surface of the brick column (2), and the T-shaped tie bars (4) protruding out of the wall surface of the raw soil wall (1) are coated with the horizontal high-ductility concrete belt (7) by the high-ductility concrete surface layer (3).
2. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the width of the horizontal groove (9) is 150-300 mm, the depth is 30-100 mm, and the distance between every two adjacent horizontal grooves is 900-1500 mm.
3. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the depth of the holes (8) is 100-150 mm; the diameters of the first cross section (801), the third cross section (803) and the fifth cross section (805) are 25-50 mm; the diameters of the second cross section (802), the fourth cross section (804) and the sixth cross section (806) are 80-120 mm.
4. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the diameter of the T-shaped tie bar (4) is 6-10 mm.
5. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the horizontal distance between adjacent holes (8) in the horizontal groove (9) is 600-1000 mm.
6. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the width of each vertical groove is 240-620 mm, the depth of each vertical groove is 150-400 mm, and the distance between every two adjacent vertical grooves is 1000-1500 m.
7. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the horizontal distance of adjacent holes (8) in the vertical groove (10) is 120-240 mm, and the vertical distance is 300-600 mm.
8. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the horizontal distance of the adjacent holes (8) of the part which is not grooved on the surface of the raw soil wall (1) is 600-1000 mm, and the vertical distance is 600-1000 mm.
9. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the length of the T-shaped tie bars (4) in the vertical grooves (10) embedded into the high-ductility concrete shear keys (6) is 100-150 mm, and the length of the T-shaped tie bars (4) extending out of the brick columns (2) is half of the thickness of the high-ductility concrete surface layer (3).
10. The raw soil wall reinforcing apparatus as claimed in claim 1, wherein: the high-ductility concrete comprises the components of cement, fly ash, sand, PVA fiber, a water reducing agent and water; the cement comprises the following components in percentage by mass: fly ash: sand: water 1: 1: 0.76: 0.58;
the volume mixing amount of the PVA fiber is 1.5 percent by taking the total volume of the cement, the fly ash, the sand and the water which are uniformly mixed as a base number.
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| CN201611262752.0A CN106703434B (en) | 2016-12-30 | 2016-12-30 | Raw soil wall reinforcing apparatus |
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| CN201611262752.0A CN106703434B (en) | 2016-12-30 | 2016-12-30 | Raw soil wall reinforcing apparatus |
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| CN106703434B true CN106703434B (en) | 2022-04-19 |
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| CN112096113A (en) * | 2020-09-11 | 2020-12-18 | 西安建筑科技大学 | High-ductility concrete caulking reinforced ancient building masonry wall and reinforcing construction process thereof |
| CN113833297B (en) * | 2021-09-10 | 2023-03-24 | 上海建为历保科技股份有限公司 | Reinforcing device for correcting deviation of wok rammed earth wall |
| CN113605562A (en) * | 2021-09-13 | 2021-11-05 | 西安五和土木工程新材料有限公司 | Reinforced filling wall structure and construction method thereof |
| CN114991515A (en) * | 2022-05-09 | 2022-09-02 | 中建八局第三建设有限公司 | Reinforcing method for old wall of ancient building |
| CN115726599B (en) * | 2022-12-06 | 2023-09-08 | 江苏海洋大学 | Method for adding masonry wall constructional column by using embedded fiber rod |
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| CN101349111B (en) * | 2008-08-18 | 2012-08-29 | 昆明理工大学 | Technique for reinforcing primary raw soil building soil wall steel wire net |
| CN101832032A (en) * | 2010-03-26 | 2010-09-15 | 建研科技股份有限公司 | Disaster prevention and reinforcement method for wood frame raw soil enclosure wall house |
| CN202945702U (en) * | 2012-11-04 | 2013-05-22 | 西安建筑科技大学 | Frame infilled wall reinforced by high ductility fiber concrete |
| CN105275222B (en) * | 2015-11-24 | 2017-06-30 | 郑州大学 | The raw-soil fills out core pattern traditional residence wall reinforcement structure and reinforcement means |
| CN106088411B (en) * | 2016-06-24 | 2018-11-27 | 长安大学 | A kind of rain-proof water erosion reinforcement means of existing raw-soil wall |
| CN206521953U (en) * | 2016-12-30 | 2017-09-26 | 西安五和土木工程新材料有限公司 | A kind of raw-soil wall bracing means |
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