A radial steel wire reinforcing structure for old kiln brick walls

Abstract

The utility model discloses a kind of for old kiln brick wall radial steel strand reinforcing structure, reinforcing structure includes old kiln brick wall, inclined bracing system, UHPC high-performance concrete and steel strand, the both sides of old kiln brick wall are supported by inclined bracing system, UHPC high-performance concrete is poured in the four around old kiln brick wall, steel strand is arranged with multiple roots in radial, steel strand is set in old kiln brick wall inside, steel strand top end is anchored with the UHPC high-performance concrete of old kiln brick wall top, bottom end is anchored with the brick wall concrete strip foundation of old kiln brick wall.The utility model has the advantages that: it is beneficial to arrange design using radial steel strand, save material, while improving the overall performance of original structure, make steel strand, old kiln brick wall, UHPC super high-performance concrete jointly bear various forces, to enhance the toughness of brick wall, prevent structure collapse;Construction is simple, structure stress is reasonable, with good economic benefit and environmental benefit.

Description

Technical Field

[0001] This utility model relates to the technical field of brick wall reinforcement in historical buildings, and in particular to a radial steel strand reinforcement structure for old kiln brick walls. Background Technology

[0002] Over time, the brick walls of some historical buildings have experienced structural degradation due to material aging, environmental erosion, and various factors during use. This has led to a sharp decline in structural load-bearing capacity, highlighting issues of durability and structural safety. As material repositories and carriers of historical civilization, historical buildings possess non-renewable and irreplaceable characteristics, making structural reinforcement and restoration work particularly important.

[0003] In brick wall reinforcement technology, various methods have been widely used. For example, for critical stress areas or situations where the stability and strength of the wall are insufficient, measures such as pressure grouting reinforcement, adding ring beams, and buttresses can be adopted. However, the above reinforcement methods often damage the original facade and fail to preserve the historical features and authenticity of the building.

[0004] Based on the above problems, there is a need for a radial steel strand reinforcement structure for old kiln brick walls, especially suitable for "silver-wrapped gold" double-layer masonry structures, which can be constructed from the inside to ensure that the historical traces are preserved while improving the structural performance. Summary of the Invention

[0005] The purpose of this utility model is to address the shortcomings of the prior art by providing a radial steel strand reinforcement structure for old kiln brick walls. This reinforcement structure consists of old kiln brick walls, a diagonal support system, UHPC high-performance concrete, and steel strands. It aims to solve the technical problem of improving the performance of the brick wall structure while achieving "restoring the old as before" and keeping the facade unchanged in the reinforcement of independent brick walls in historical preservation buildings.

[0006] The objective of this utility model is achieved through the following technical solution: A radial steel strand reinforcement structure for old kiln brick walls is disclosed. The reinforcement structure includes the old kiln brick wall, a diagonal support system, UHPC high-performance concrete, and steel strands. The two sides of the old kiln brick wall are supported by the diagonal support system. The UHPC high-performance concrete is poured around the perimeter of the old kiln brick wall. Multiple steel strands are arranged radially and penetrate the interior of the old kiln brick wall. The top ends of the steel strands are anchored to the UHPC high-performance concrete at the top of the old kiln brick wall, and the bottom ends are anchored to the concrete strip foundation of the old kiln brick wall.

[0007] The old kiln brick wall includes an outer layer of old kiln brick wall and an inner layer of old kiln brick wall, with slag or broken building materials filling the space between the outer layer of old kiln brick wall and the inner layer of old kiln brick wall.

[0008] The concrete strip foundations of the brick wall are respectively located at the bottom of the old kiln brick wall and at the doors and windows of the old kiln brick wall.

[0009] The inclined support system includes a temporary foundation for the inclined bracing, a wooden crossbar, and an inclined brace. The wooden crossbar is fixed to the old kiln brick wall, and one end of the inclined brace is connected to the wooden crossbar and the other end is connected to the temporary foundation for the inclined bracing.

[0010] The diagonal brace includes an upper fixed structure and a lower telescopic structure. The upper part of the upper fixed structure is hinged to the wooden crossbar. The lower telescopic structure consists of an upper screw, a lower screw, and an intermediate sleeve. The internal thread of the upper part of the intermediate sleeve mates with the external thread of the lower part of the upper screw, and the internal thread of the lower part mates with the external thread of the upper part of the lower screw. The upper part of the upper screw is connected to the bottom of the upper fixed structure, and the lower part of the lower screw is hinged to the temporary foundation of the diagonal brace.

[0011] The diagonal bracing is divided into short diagonal bracing and long diagonal bracing.

[0012] Both ends of the steel strand are anchored by steel strand anchors, which consist of anchor plates and anchor heads.

[0013] The steel strand anchor is installed in the steel strand anchor installation groove, which is respectively located on the UHPC high-performance concrete and the brick wall concrete strip foundation.

[0014] The steel strand is wrapped in a PVC pipe.

[0015] The advantages of this utility model are: The use of radial steel strands to reinforce the double-layer old kiln brick wall facilitates the layout design based on the original brick wall's remaining shape, saving materials. While improving the overall performance of the original structure, the steel strands, the old kiln brick wall, and UHPC ultra-high performance concrete jointly bear various forces, thereby enhancing the brick wall's toughness and preventing structural collapse. Furthermore, the use of radial steel strands to reinforce the double-layer old kiln brick wall is simple to construct, has a reasonable structural stress distribution, and offers excellent economic and environmental benefits. Attached Figure Description

[0016] Figure 1 This is an axial view of the radial steel strand reinforcement structure for old kiln brick walls according to this utility model; Figure 2 This is a cross-sectional view of the old kiln brick wall along its length according to this utility model; Figure 3 for Figure 2 Enlarged view of A in the middle; like Figures 1-3 As shown in the figure, the labels represent: 1. Outer layer old kiln brick wall; 2. Inner layer old kiln brick wall; 3. Brick wall concrete strip foundation; 4. Diagonal brace temporary foundation; 5. Wooden crossbar; 6. Short diagonal brace; 7. Long diagonal brace; 8. UHPC ultra-high performance concrete; 9. Steel strand anchor; 10. Steel strand; 11. Anchor plate; 12. Anchor head; 13. Steel strand anchor installation groove; 14. Upper fixing structure; 15. Upper screw; 16. Lower screw; 17. Intermediate sleeve. Detailed Implementation

[0017] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art: Example: Figures 1-3 As shown, this embodiment relates to a radial steel strand reinforcement structure for old kiln brick walls. The reinforcement structure mainly includes old kiln brick walls, a diagonal support system, UHPC high-performance concrete 8, and steel strands 10. The old kiln brick walls are "silver-clad gold" double-layer masonry structures with an irregular shape and a total thickness of 370mm. The old kiln brick walls include an outer old kiln brick wall 1 and an inner old kiln brick wall 2. The space between the outer old kiln brick wall 1 and the inner old kiln brick wall 2 is filled with slag or broken building materials. The width of both the outer old kiln brick wall 1 and the inner old kiln brick wall 2 is 100mm, and the distance between the outer old kiln brick wall 1 and the inner old kiln brick wall 2 is 170mm. The two sides of the old kiln brick walls are supported by a diagonal support system, which provides temporary support for the old kiln brick walls to facilitate the construction of UHPC high-performance concrete 8 and steel strands 10. UHPC high-performance concrete 8 is poured around the perimeter of the old kiln brick wall. The pouring width of UHPC high-performance concrete 8 is 370mm, the pouring thickness is 200mm, the strength is not less than C100, and the final setting time is 4 hours. Steel strands 10 are installed inside the old kiln brick wall. The top of the steel strands 10 is anchored to the middle of the UHPC high-performance concrete 8 at the top of the old kiln brick wall, and the bottom is anchored to the concrete strip foundation 3 of the brick wall at the bottom of the old kiln brick wall. The concrete strip foundation 3 of the brick wall is set at the bottom of the old kiln brick wall and at the doors and windows of the old kiln brick wall. The steel strands 10 are used to reinforce the old kiln brick wall.

[0018] like Figure 1As shown, the diagonal support system includes a temporary diagonal support foundation 4, a wooden crossbar 5, and diagonal braces. The temporary diagonal support foundation 4 is set on the ground, and the wooden crossbar 5 is fixed at different heights of the old kiln brick wall. The diagonal braces are divided into short diagonal braces 6 and long diagonal braces 7. One end of the diagonal brace is connected to the wooden crossbar 5, and the other end is connected to the temporary diagonal support foundation 4. To ensure the reliability of the support, each wooden crossbar 5 is connected to at least two diagonal braces. In this embodiment, the diagonal brace is a telescopic structure, comprising an upper fixed structure 14 and a lower telescopic structure. The upper part of the upper fixed structure is hinged to the wooden crossbar 5. The lower telescopic structure consists of an upper screw 15, a lower screw 16, and an intermediate sleeve 17. The internal thread of the upper part of the intermediate sleeve 17 engages with the external thread of the lower part of the upper screw 15, and the internal thread of the lower part engages with the external thread of the upper part of the lower screw 16. The upper part of the upper screw 15 is connected to the bottom of the upper fixed structure 14, and the lower part of the lower screw 16 is hinged to the temporary foundation 4 of the diagonal brace. The length of the diagonal brace can be adjusted by adjusting the length of the upper screw 15 and the lower screw 16 inside the intermediate sleeve 17.

[0019] like Figures 1-3 As shown, both ends of the steel strand 10 are anchored by steel strand anchors 9. The steel strand anchor 9 consists of an anchor plate 11 and an anchor head 12. The anchor head 12 is used to fix the ends of the steel strand 10. In this embodiment, the steel strand anchor 9 is a clamp-type anchor. The anchor head 12 includes an anchor plate and a clamp. The clamp is conical and used to clamp the steel strand 10. The anchor plate has conical holes for installing the clamp. The steel strand anchor 9 is installed in a steel strand anchor installation groove 13, which is respectively located on the UHPC high-performance concrete 8 and the brick wall concrete strip foundation 3. The steel strand 10 is wrapped with a PVC pipe to facilitate the installation of the steel strand 10 and to protect the steel strand 10 during subsequent construction.

[0020] like Figures 1-3 As shown, this embodiment also includes the following construction method, which mainly includes the following steps: Step 1: Based on the wall height, set up a diagonal bracing system at different height levels. Since it is a double-layer wall, diagonal bracing systems need to be set on both sides of the wall.

[0021] Step 2: According to the design drawings, draw lines on the old kiln brick wall to mark the path of steel strand 10 and determine the specific locations of the two anchoring sections of steel strand 10.

[0022] Step 3: Drill holes from the top of the old kiln brick wall, drilling along precise positions and angles. During the drilling process, the condition of the old kiln brick wall must be monitored at all times. Drill until the concrete strip foundation 3 of the brick wall is reached, and insert a PVC pipe to protect the drill hole.

[0023] Step 4: Cut a groove from the lower side of the brick wall concrete strip foundation 3 until the drill hole is found. Adjust the size of the steel strand anchor installation groove 13 according to the size of the steel strand anchor 9 to ensure that the entire set of steel strand anchor 9 can be inserted.

[0024] Step 5: Insert the steel strand 10 from the top and fix the bottom using the steel strand anchor 9.

[0025] Step 6: Construct UHPC ultra-high performance concrete 8 around the old kiln brick wall with a construction thickness of 200mm, and pre-reserve steel strand anchor installation grooves 13 at the upper anchoring position.

[0026] Step 7: Grout the slag or broken building materials in the old kiln brick wall, controlling the grouting pressure to a low level to prevent damage to the mortar joints of the old kiln brick wall.

[0027] Step 8: Once the UHPC ultra-high performance concrete 8 reaches the strength requirement, prestress the steel strands and fix both ends after loading.

[0028] Step 9: Pour micro-expansion fine stone concrete into the steel strand anchor installation groove 13, and at the same time remove the inclined support system to complete the reinforcement.

[0029] The beneficial technical effects of this embodiment are as follows: Reinforcing the double-layer old kiln brick wall with radial steel strands, based on the remaining shape of the original brick wall, facilitates the layout design and saves materials. While improving the overall performance of the original structure, the steel strands, the old kiln brick wall, and UHPC ultra-high performance concrete jointly bear various forces, thereby enhancing the toughness of the brick wall and preventing structural collapse. Reinforcing the double-layer old kiln brick wall with radial steel strands is simple to construct, has a reasonable structural stress distribution, and offers excellent economic and environmental benefits.

Claims

1. A radial steel strand reinforcement structure for old kiln brick walls, characterized in that... The reinforcement structure includes an old kiln brick wall, a diagonal bracing system, UHPC high-performance concrete, and steel strands. The two sides of the old kiln brick wall are supported by the diagonal bracing system. The UHPC high-performance concrete is poured around the old kiln brick wall. Multiple steel strands are arranged radially and run through the interior of the old kiln brick wall. The top of the steel strands is anchored to the UHPC high-performance concrete at the top of the old kiln brick wall, and the bottom is anchored to the concrete strip foundation of the old kiln brick wall.

2. The radial steel strand reinforcement structure for old kiln brick walls as described in claim 1, characterized in that... The old kiln brick wall includes an outer layer of old kiln brick wall and an inner layer of old kiln brick wall, with slag or broken building materials filling the space between the outer layer of old kiln brick wall and the inner layer of old kiln brick wall.

3. The radial steel strand reinforcement structure for old kiln brick walls as described in claim 1, characterized in that... The concrete strip foundations of the brick wall are respectively located at the bottom of the old kiln brick wall and at the doors and windows of the old kiln brick wall.

4. The radial steel strand reinforcement structure for old kiln brick walls as described in claim 1, characterized in that... The inclined support system includes a temporary foundation for the inclined bracing, a wooden crossbar, and an inclined brace. The wooden crossbar is fixed to the old kiln brick wall, and one end of the inclined brace is connected to the wooden crossbar and the other end is connected to the temporary foundation for the inclined bracing.

5. A radial steel strand reinforcement structure for old kiln brick walls as described in claim 4, characterized in that... The diagonal brace includes an upper fixed structure and a lower telescopic structure. The upper part of the upper fixed structure is hinged to the wooden crossbar. The lower telescopic structure consists of an upper screw, a lower screw, and an intermediate sleeve. The internal thread of the upper part of the intermediate sleeve mates with the external thread of the lower part of the upper screw, and the internal thread of the lower part mates with the external thread of the upper part of the lower screw. The upper part of the upper screw is connected to the bottom of the upper fixed structure, and the lower part of the lower screw is hinged to the temporary foundation of the diagonal brace.

6. A radial steel strand reinforcement structure for old kiln brick walls as described in claim 4, characterized in that... The diagonal bracing is divided into short diagonal bracing and long diagonal bracing.

7. A radial steel strand reinforcement structure for old kiln brick walls as described in claim 1, characterized in that... Both ends of the steel strand are anchored by steel strand anchors, which consist of anchor plates and anchor heads.

8. A radial steel strand reinforcement structure for old kiln brick walls as described in claim 7, characterized in that... The steel strand anchor is installed in the steel strand anchor installation groove, which is respectively located on the UHPC high-performance concrete and the brick wall concrete strip foundation.

9. A radial steel strand reinforcement structure for old kiln brick walls as described in claim 1, characterized in that... The steel strand is wrapped in a PVC pipe.

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