CN215716274U - Adopt prestressed anchorage pole pressure grouting to consolidate hollow block structure - Google Patents
Adopt prestressed anchorage pole pressure grouting to consolidate hollow block structure Download PDFInfo
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- CN215716274U CN215716274U CN202120965956.0U CN202120965956U CN215716274U CN 215716274 U CN215716274 U CN 215716274U CN 202120965956 U CN202120965956 U CN 202120965956U CN 215716274 U CN215716274 U CN 215716274U
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Abstract
The utility model relates to a structure for reinforcing a hollow building block by adopting prestressed anchor rod pressure grouting, which comprises a wall body, a longitudinal prestressed anchor rod, a transverse prestressed anchor rod and a foundation, wherein the longitudinal prestressed anchor rod is arranged on the wall body; the wall body is of a concrete hollow block masonry structure, the foundation is a strip foundation under the wall, and the longitudinal prestressed anchor rods are vertically and uniformly inserted into the wall body; the upper end of the longitudinal prestressed anchor rod is anchored by adopting an anchorage device with a bolt, and the lower end of the longitudinal prestressed anchor rod is anchored in the foundation; a thin-wall steel pipe or a plastic pipe is sleeved on the longitudinal prestressed anchor rod, and mortar is poured between the thin-wall steel pipe or the plastic pipe and the concrete hollow building blocks of the wall body; the transverse prestressed anchor rod is arranged in the wall body after transverse drilling is carried out in the horizontal direction of the wall body, and anchorage devices with bolts are adopted at two ends for anchoring.
Description
Technical Field
The utility model relates to a structure for reinforcing a hollow building block by adopting prestressed anchor rod pressure grouting, belonging to the technical field of seismic reinforcement of existing buildings.
Background
The technology of adopting the prestressed anchor rod pressure grouting for seismic reinforcement is a brand new seismic reinforcement idea. The traditional method for seismic reinforcement outside a wall by adopting a prestress technology has great influence on the appearance, the structure and the construction process of an original structure. According to the technology, longitudinal and transverse prestressed anchor rods are arranged in the concrete hollow small-sized block masonry wall and are subjected to pressure grouting, then the steel bars are tensioned for anchoring, and the prestressed mortar anchor rods are formed for seismic reinforcement of the concrete hollow small-sized block masonry structure, so that wide application conditions are created for the method for seismic reinforcement of the masonry structure, and the prospect of practical application is shown.
SUMMERY OF THE UTILITY MODEL
The utility model provides a method for reinforcing a hollow block structure by adopting prestressed anchor rod pressure grouting, namely a method for performing earthquake resistance reinforcement on a concrete hollow small-sized block masonry structure by longitudinally and transversely arranging prestressed anchor rod pressure grouting, which is mainly characterized in that a longitudinal prestressed anchor rod is arranged in a concrete hollow block masonry wall, pressure grouting is performed, and then a steel bar is tensioned for anchoring; and transversely drilling a hole in the horizontal direction of the wall body, and putting in a prestressed anchor rod to form longitudinal and transverse prestressed mortar anchor rods for seismic reinforcement of the concrete hollow block masonry structure, wherein the prestressed longitudinal anchor rod is vertically and uniformly arranged, and each layer of bricks of the prestressed transverse anchor rod is drilled with the transverse anchor rod.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a structure for reinforcing a hollow building block by adopting prestressed anchor rod pressure grouting comprises a wall body, a longitudinal prestressed anchor rod, a transverse prestressed anchor rod and a foundation; the wall body is of a concrete hollow block masonry structure, the foundation is a strip foundation under the wall, and the longitudinal prestressed anchor rods are vertically and uniformly inserted into the wall body; the upper end of the longitudinal prestressed anchor rod is anchored by adopting an anchorage device with a bolt, and the lower end of the longitudinal prestressed anchor rod is anchored in the foundation; a thin-wall steel pipe or a plastic pipe is sleeved on the longitudinal prestressed anchor rod, and mortar is poured between the thin-wall steel pipe or the plastic pipe and the concrete hollow building blocks of the wall body; the transverse prestressed anchor rod is arranged in the wall body after transverse drilling is carried out in the horizontal direction of the wall body, and anchorage devices with bolts are adopted at two ends for anchoring.
Furthermore, the longitudinal prestressed anchor rods and the transverse prestressed anchor rods are all phi 18-phi 20 prestressed anchor rods.
Further, the vertical arrangement interval of the longitudinal prestressed anchor rods is 400-600 mm.
Furthermore, the transverse prestressed anchor rod is drilled in each layer of building blocks in the horizontal direction of the wall body, the transverse prestressed anchor rod is placed in the transverse prestressed anchor rod, and anchorage devices with bolts are adopted at two ends of the transverse prestressed anchor rod for anchoring.
Furthermore, horizontal steel mesh sheets are arranged in the wall body every 5-6 layers of building blocks.
Furthermore, the horizontal reinforcing mesh is formed by welding phi 8 reinforcing steel bars.
Furthermore, an open trench is dug on the outer side of the foundation under the wall, an L-shaped opening is formed in the lower portion of the foundation along the vertical projection direction of the hole, the cross section of the L-shaped opening is rectangular, and the size of the cross section of the L-shaped opening is 600mm multiplied by 400 mm.
The structure for reinforcing the hollow building block by adopting the prestressed anchor rod through pressure grouting and the construction method thereof adopt the following steps:
the method comprises the following steps: paying off a wall body needing to be reinforced by a mortar anchor rod according to a design drawing, vertically and uniformly arranging holes along the longitudinal wall direction, and determining the drilling position in the horizontal direction of the wall body;
step two: drilling each layer of building blocks in the horizontal direction of the wall body, placing a transverse prestressed anchor rod, tightening bolts of the transverse prestressed anchor rod by using a torque wrench to apply prestressed tension, and anchoring by using an anchorage device with bolts;
step three: excavating an open trench on the outer side of the foundation under the wall, and opening an L-shaped hole along the vertical projection direction of the hole;
step four: after being oiled, the longitudinal prestressed anchor rod is sleeved with a thin-wall steel pipe or a plastic pipe and inserted into the hole, and the longitudinal prestressed anchor rod is arranged in the wall body;
step five: adjusting the length of the longitudinal prestressed anchor rod to ensure that the lower end of the longitudinal prestressed anchor rod extends into the L-shaped hole, the anchoring length of the longitudinal prestressed anchor rod is not less than 700mm, and filling the hole with C35 concrete to anchor the lower end of the longitudinal prestressed anchor rod with the foundation;
step six: performing pressure grouting by adopting a pneumatic propulsion grouting machine, and grouting and compacting a gap between the concrete hollow block and the thin-wall steel pipe or the plastic pipe by using mortar;
step seven: and after the strength of the mortar reaches the designed strength, tightening the bolt at the upper end of the longitudinal prestressed anchor rod by using a torque wrench to apply prestressed tension, and anchoring by using an anchorage device with a bolt.
Has the advantages that:
the utility model can effectively improve the crack resistance and shear resistance of the wall, inhibit the cracking of the wall, inhibit the development of cracks and improve the seismic resistance of the masonry structure, and particularly can effectively improve the seismic bearing capacity of the existing masonry building for seismic reinforcement.
Drawings
FIG. 1 is a plan view of a prestressed anchor pressure grouting reinforced hollow block structure;
fig. 2 is a sectional view taken along line a-a of fig. 1.
In the figure, 1 a wall body; 2 longitudinal prestressed anchor rods; 3, a transverse prestressed anchor rod; 4, foundation treatment; 5 thin-walled steel or plastic pipes; 6, horizontal reinforcing mesh sheets; 7, an anchorage device.
Detailed Description
A structure for reinforcing a hollow building block by adopting prestressed anchor rod pressure grouting is shown in figures 1-2 and comprises a wall body 1, a longitudinal prestressed anchor rod 2, a transverse prestressed anchor rod 3 and a foundation 4; the wall body 1 is a concrete hollow block masonry structure, the foundation 1 is a strip foundation under the wall, and the longitudinal prestressed anchor rods 2 are vertically and uniformly inserted into the wall body 1; the upper end of the longitudinal prestressed anchor rod 2 is anchored by adopting an anchorage device 7 with a bolt, and the lower end of the longitudinal prestressed anchor rod 2 is anchored in the foundation 4; a thin-wall steel pipe or plastic pipe 5 is sleeved on the longitudinal prestressed anchor rod 2, and mortar is poured between the thin-wall steel pipe or plastic pipe 5 and the concrete hollow building blocks of the wall body 1; the transverse prestressed anchor rods 3 are transversely drilled in the horizontal direction of the wall body 1 and then are placed into the wall body 1, and anchorage devices 7 with bolts are adopted at two ends for anchoring.
Furthermore, the longitudinal prestressed anchor rods 2 and the transverse prestressed anchor rods 3 are prestressed anchor rods with phi 18-phi 20.
Further, the vertical arrangement interval of the longitudinal prestressed anchor rods 2 is 400-600 mm.
Further, each layer of building blocks of the horizontal direction of the wall body 1 is drilled by the transverse prestressed anchor rods 3, the transverse prestressed anchor rods 3 are placed in, and anchorage devices 7 with bolts are adopted at two ends for anchoring.
Furthermore, horizontal steel mesh sheets 6 are arranged in the wall body 1 every 5-6 layers of building blocks.
Furthermore, the horizontal reinforcing mesh 6 is formed by welding phi 8 reinforcing steel bars.
Furthermore, an open trench is dug on the outer side of the foundation 4 under the wall, an L-shaped opening is formed in the lower portion of the vertical projection direction of the hole, the cross section of the L-shaped opening is rectangular, and the size of the cross section of the L-shaped opening is 600mm multiplied by 400 mm.
The structure for reinforcing the hollow building block by adopting the prestressed anchor rod through pressure grouting and the construction method thereof adopt the following steps:
the method comprises the following steps: paying off a wall body needing to be reinforced by a mortar anchor rod according to a design drawing, vertically and uniformly arranging holes along the longitudinal wall direction, and determining the drilling position in the horizontal direction of the wall body 1;
step two: drilling each layer of building blocks in the horizontal direction of the wall body 1, placing a transverse prestressed anchor rod 3, tightening bolts of the transverse prestressed anchor rod 3 by using a torque wrench to apply prestressed tension, and anchoring by using an anchorage device 7 with bolts;
step three: an open trench is excavated on the outer side of the wall lower foundation 4, and an L-shaped hole is formed along the vertical projection direction of the hole;
step four: after being oiled, the longitudinal prestressed anchor rod 2 is sleeved with a thin-wall steel pipe or a plastic pipe 5 and is inserted into the hole, and the longitudinal prestressed anchor rod 2 is arranged in the wall body 1;
step five: adjusting the length of the longitudinal prestressed anchor rod 2 to ensure that the lower end of the longitudinal prestressed anchor rod 2 extends into the L-shaped hole, the anchoring length of the longitudinal prestressed anchor rod is not less than 700mm, and filling the hole with C35 concrete to anchor the lower end of the longitudinal prestressed anchor rod 2 to the foundation 4;
step six: performing pressure grouting by adopting a pneumatic propulsion grouting machine, and grouting and compacting a gap between the concrete hollow block and the thin-wall steel pipe or the plastic pipe by using mortar;
step seven: after the strength of the mortar reaches the designed strength, a torque wrench is used for screwing the bolt at the upper end of the longitudinal prestressed anchor rod 2 to apply prestressed tension, and an anchorage device 7 with a bolt is used for anchoring.
The foregoing is a representative embodiment of the present invention, and the practice of the present invention is not limited thereto. The utility model discloses an adopt vertical through-hole to put into bamboo pole grout and consolidate hollow block structure and "adopt wall bolt to consolidate hollow block structure" two utility model patents of "have still been applied for simultaneously.
Claims (6)
1. The utility model provides an adopt prestressed anchorage pole pressure grouting to consolidate hollow block structure which characterized in that: the wall comprises a wall body (1), a longitudinal prestressed anchor rod (2), a transverse prestressed anchor rod (3) and a foundation (4); the wall body (1) is of a concrete hollow block masonry structure, the foundation (4) is a strip foundation under the wall, and the longitudinal prestressed anchor rods (2) are vertically and uniformly inserted into the wall body (1); the upper end of the longitudinal prestressed anchor rod (2) is anchored by adopting an anchorage device (7) with a bolt, and the lower end of the longitudinal prestressed anchor rod (2) is anchored in the foundation (4); a thin-wall steel pipe or plastic pipe (5) is sleeved on the longitudinal prestressed anchor rod (2), and mortar is poured between the thin-wall steel pipe or plastic pipe (5) and the concrete hollow building blocks of the wall body (1); the transverse prestressed anchor rods (3) are transversely drilled in the horizontal direction of the wall body (1) and then are placed into the wall body (1), and anchorage devices (7) with bolts are adopted at two ends for anchoring; horizontal steel mesh sheets (6) are arranged in the wall body (1) every 5-6 layers of building blocks.
2. The structure of claim 1, wherein the prestressed anchor pressure grouting reinforcement hollow block structure is characterized in that: the longitudinal prestressed anchor rods (2) and the transverse prestressed anchor rods (3) are all phi 18-phi 20 prestressed anchor rods.
3. The structure of claim 1, wherein the prestressed anchor pressure grouting reinforcement hollow block structure is characterized in that: the vertical arrangement interval of the longitudinal prestressed anchor rods (2) is 400-600 mm.
4. The structure of claim 1, wherein the prestressed anchor pressure grouting reinforcement hollow block structure is characterized in that: and the transverse prestressed anchor rods (3) are drilled in each layer of building blocks in the horizontal direction of the wall body (1), the transverse prestressed anchor rods (3) are placed in the transverse prestressed anchor rods, and anchorage devices (7) with bolts are adopted at two ends for anchoring.
5. The structure of claim 1, wherein the prestressed anchor pressure grouting reinforcement hollow block structure is characterized in that: the horizontal reinforcing mesh (6) is formed by welding phi 8 reinforcing steel bars.
6. The structure of claim 1, wherein the prestressed anchor pressure grouting reinforcement hollow block structure is characterized in that: an open trench is dug on the outer side of the foundation (4) under the wall, an L-shaped opening is formed in the lower portion of the vertical projection direction of the hole, the cross section of the L-shaped opening is rectangular, and the size of the cross section of the L-shaped opening is 600mm multiplied by 400 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120965956.0U CN215716274U (en) | 2021-05-07 | 2021-05-07 | Adopt prestressed anchorage pole pressure grouting to consolidate hollow block structure |
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| CN202120965956.0U CN215716274U (en) | 2021-05-07 | 2021-05-07 | Adopt prestressed anchorage pole pressure grouting to consolidate hollow block structure |
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| CN215716274U true CN215716274U (en) | 2022-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115822309A (en) * | 2022-12-23 | 2023-03-21 | 北京华清安地建筑设计有限公司 | Reinforcing construction method for ancient building wall |
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2021
- 2021-05-07 CN CN202120965956.0U patent/CN215716274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115822309A (en) * | 2022-12-23 | 2023-03-21 | 北京华清安地建筑设计有限公司 | Reinforcing construction method for ancient building wall |
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