Anchor rod reinforcing structure in cultural relic masonry ancient bridge body
By setting vertical, oblique and horizontal anchor rods in the ancient brick and stone bridge, and combining them with cement-based grouting materials and bushings, the weathering and cracking problems of the masonry brick and stone structure ancient bridge were solved, the bearing capacity of the bridge piers and bridge body was enhanced, the service life was extended and the cultural heritage was protected.
Patent Information
- Application Number
- CN202421680021.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-07-16
AI Technical Summary
Masonry brick and stone structure cultural relics and ancient bridges are prone to weathering and cracking in the natural environment, resulting in structural instability, reduced bearing capacity, and the risk of deformation and collapse, shortening the service life.
Vertical, oblique and horizontal anchor rods are set in the body of the ancient brick and stone bridge, combined with cement-based grouting materials and bushings, and fixed in the bearing rock layer through static drilling technology to enhance the integrity and bearing capacity of the bridge piers and bridge body.
Effectively enhance the integrity and bearing capacity of the bridge piers and bridge body, maintain the original style and historical information integrity of the ancient bridge, extend its service life, avoid dismantling and repair, and ensure the preservation of cultural memory.
Smart Images
Figure CN223358134U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of reinforcement technology for ancient masonry arch bridges of cultural relics, and in particular to an anchor rod reinforcement structure inside an ancient masonry bridge of cultural relics. Background Art
[0002] Traditional masonry structures today are based on relatively low productivity and limited material acquisition and processing technology in ancient times. Brick and stone, being widely available and relatively easy to process, became the primary materials of choice for construction. Ancient China's long history of agricultural civilization provided a stable source of building materials for masonry structures.
[0003] Masonry brick and stone arch bridges have fallen into disrepair and lack of care and maintenance due to natural environments such as rain erosion, ground moisture, high humidity, and plant growth. The bricks and stones of the tower body have weathered and cracked, and the mechanical properties of the brick and stone materials have declined, which may lead to structural instability, reduced bearing capacity and other diseases, and even the risk of deformation and collapse, shortening the service life of the masonry brick and stone structure cultural relics and ancient bridges.
[0004] Therefore, it is very important to adopt the reinforcement technology of the present invention for arch bridges with masonry structures that have exceeded their designed service life and have insufficient bearing capacity. Utility Model Content
[0005] In order to improve the problem that the bricks and stones of the bridge body are damaged by weathering and cracking due to environmental influences, the mechanical properties of the brick and stone materials are reduced, which may lead to structural instability, reduced bearing capacity and other diseases, and even the risk of deformation and collapse, shortening the service life of the masonry brick and stone structure cultural relic ancient bridges, the present application provides an anchor rod reinforcement structure inside the cultural relic brick and stone ancient bridge.
[0006] The present application provides an anchor rod reinforcement structure for a cultural relic brick and stone ancient bridge, which adopts the following technical solution:
[0007] An anchor rod reinforcement structure inside an ancient brick and stone bridge, which is a cultural relic, includes a bridge body and a bridge abutment. The characteristics are: an arch ring is provided at the lower part of the bridge body, a pier is provided at the lower part of the arch ring, a foundation is provided at the lower part of the pier, a bearing rock layer is provided at the lower part of the foundation, a bridge deck is provided at the upper part of the bridge body, and the interior of the bridge body is penetrated by a plurality of vertical anchor rods, oblique anchor rods, and horizontal anchor rods.
[0008] By adopting the above technical solution, the foundation, piers and bearing rock layers can support the bridge body and bridge deck, and help reduce the impact force on the bridge body.
[0009] Preferably, one end of several of the vertical anchor rods vertically penetrates the bridge deck and the bridge body, and the other end of the vertical anchor rods vertically penetrates the bridge pier and the foundation, and is fixedly anchored into the bearing rock stratum.
[0010] By adopting the above technical solution, the vertical anchor rods can effectively enhance the integrity and vertical bearing capacity of the bridge piers and the bridge body.
[0011] Preferably, one end of a plurality of the oblique anchor rods obliquely penetrates the bridge deck and the upper portion of the bridge body, and the other end of the oblique anchor rods obliquely penetrates the arch ring and is anchored into the lower portion of the bridge body.
[0012] By adopting the above technical solution, the oblique anchor rods can help resist the bearing capacity and increase the compressive performance.
[0013] Preferably, a portion of several of the horizontal anchor rods is fixed through the arch ring, and another portion of several of the horizontal anchor rods is fixed through the upper portion of the bridge body.
[0014] By adopting the above technical solution, the ability to withstand vertical load and horizontal thrust can be increased.
[0015] Preferably, the lower portion of the arch ring is provided with an arch soffit with both ends of the opening fixedly connected to the bridge pier.
[0016] By adopting the above technical solution, the fixed connection between the arch soffit and the bridge pier can provide support for the arch ring.
[0017] Preferably, the vertical anchor rods, the oblique anchor rods and the horizontal anchor rods are all covered with bushings having tensile properties and constraining the aggregate slurry in the bushings.
[0018] By adopting the above technical solution, the liner can be used to control the penetration of slurry in the casing and the confinement of aggregate.
[0019] Preferably, a cement-based grouting material with high strength, no shrinkage and no expansion characteristics is provided between the vertical anchor rods, the oblique anchor rods, the horizontal anchor rods and the bushings.
[0020] By adopting the above technical solution, the cement-based grouting material has the advantages of good fluidity and high strength.
[0021] Preferably, the vertical anchor rods, the oblique anchor rods and the horizontal anchor rods are all made of stainless steel threaded steel bars with anti-slip surfaces.
[0022] By adopting the above technical solution, the use of stainless steel threaded steel bars can effectively prevent rust and increase friction, thereby improving the stability and service life of the anchor rod.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. By using vertical anchor rods, oblique anchor rods, horizontal anchor rods, and static drilling technology, while meeting the bearing capacity and stability requirements of the masonry arch cultural relic ancient bridge, the dismantling and repair of the cultural relic ancient bridge is avoided, which helps to maintain the original style and historical information of the ancient bridge, and protects the value and authenticity of the cultural relic to the greatest extent. At the same time, it is well compatible with the original structure without destroying the overall coordination; ensuring that these buildings that carry cultural memories can be preserved for a long time, so that future generations can continue to appreciate and feel the cultural charm of traditional ancient bridges. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is the overall front view of this application;
[0026] Figure 2 A schematic top view of the present application;
[0027] Figure 3 This is a schematic diagram of the distribution of oblique anchor rods in this application;
[0028] Figure 4 This is a schematic diagram of the distribution of vertical anchor rods and oblique anchor rods in this application;
[0029] Figure 5 This is a schematic diagram of the connection between the foundation and the supporting rock stratum of this application;
[0030] Figure 6 This is a schematic diagram of the distribution of vertical anchor rods on the bridge body in this application;
[0031] Figure 7 This is a schematic diagram of the connection between the bridge body and the arch ring of this application;
[0032] Figure 8 This is a schematic diagram of the connection distribution between the bridge body and the horizontal anchor rods in this application;
[0033] Figure 9 This is a cross-sectional view of the anchor reinforcement structure of this application.
[0034] Figure numerals: 1. Bridge body; 2. Arch soffit; 3. Bridge pier; 4. Bridge deck; 5. Vertical anchor rod; 6. Oblique anchor rod; 7. Horizontal anchor rod; 8. Cement-based grouting material; 9. Bushing; 10. Foundation; 11. Bearing rock layer; 12. Arch ring; 13. Abutment. DETAILED DESCRIPTION
[0035] The following is combined with Figure 1-9 This application is described in further detail.
[0036] The embodiment of the present application discloses an anchor rod reinforcement structure inside an ancient brick and stone bridge.
[0037] Example 1
[0038] Reference Figure 1 、 Figure 3 , a cultural relic brick and stone ancient bridge body anchor rod reinforcement structure, including a bridge body 1 spanning the entire river channel and abutments 13 fixedly arranged on both sides of the bridge body 1, and the lower part of the bridge body 1 is provided with 5 semicircular arch rings 12, and the arch rings 12 are not only beautiful in shape, but also have good supporting performance. The arch rings 12 cooperate with the 4 bridge piers 3 arranged at the lower part to play a diversion role, and an arch soffit 2 is provided at the lower part of the arch ring 12, and the open ends of the arch soffit 2 are fixedly connected to the upper part of the bridge pier 3 (due to different spans, the number of bridge piers 3 and arch rings 12 set is also different. The number of bridge piers 3 and arch rings 12 should be reasonably set according to the width of the river to achieve better supporting effect).
[0039] Reference Figure 1-Figure 5 The lower opening of the arch ring 12 is fixedly connected to the upper end face of the pier 3, and the lower part of the pier 3 is fixedly connected to the upper part of the foundation 10, and the lower part of the foundation 10 is fixedly connected to the bearing rock stratum 11, and the upper part of the bridge body 1 is fixedly connected to the bridge deck 4, and the interior of the bridge body 1 is fixedly penetrated by a number of vertical anchor rods 5, oblique anchor rods 6 and horizontal anchor rods 7.
[0040] Through the above-mentioned arrangement, the foundation 10 and the pier 3 cooperate to form a pile foundation, which supports the upper bridge body 1 and the bridge deck 4. The pier 3 cooperates with the arch ring 12 to ensure that the supporting performance of the bridge deck 4 and the bridge body 1 is not affected without affecting the flow of water, so that people can walk on the bridge deck 4 with peace of mind. The pier 3 and the foundation 10 can both transfer the upper load to the bearing rock layer 11, sharing the vertical load force of the bridge deck 4 and the bridge body 1 on the foundation 10 and the pier 3.
[0041] It should be noted that in order to withstand the impact of water flow, the bridge pier 3 is usually set to be triangular or circular at both ends to prevent the lateral impact force caused by the impact of water flow, and the bridge body 1 and the abutment 13, bridge pier 3, arch 2, foundation 10, bridge pier 3, and bearing rock layer 11 are all existing technologies, and their structural principles will not be elaborated here.
[0042] Reference Figure 4 One end of several vertical anchor rods 5 vertically penetrates the bridge deck 4, then vertically penetrates the entire bridge body 1, and vertically penetrates the entire pier 3 again, as well as the entire foundation 10 fixedly connected at the bottom of the pier 3, and finally fixedly anchored into the interior of the lowest bearing rock layer 11.
[0043] Reference Figure 2-Figure 8 One end of several oblique anchor rods 6 starts from obliquely penetrating the bridge deck 4, then obliquely penetrating the upper part of the bridge body 1, and obliquely penetrating the arch ring 12 again, and finally fixedly anchored into the lower part of the bridge body 1.
[0044] Reference Figure 5Among the several horizontal anchor rods 7, some of them are fixed horizontally and pass through the middle of the arch ring 12, and the remaining horizontal anchor rods 7 are fixed horizontally and pass through the upper part of the bridge body 1, and avoid the oblique anchor rods 6 and the vertical anchor rods 5 to prevent secondary damage to the bridge body 1.
[0045] Through the above-mentioned setting, the vertical anchor rod 5 can effectively enhance the integrity and vertical bearing capacity of the bridge pier 3 and the bridge body 1, and directly transfer the upper load to the foundation 10 and the bearing rock layer 11. After the vertical anchor rod 5 is implanted in the rock mass, it can effectively improve the bridge pier's resistance to horizontal thrust and increase the safe service life of the bridge body.
[0046] The horizontal anchor rod 7 runs transversely through the arch ring 12 and the upper part of the bridge body 1, which can help the arch ring 12 and the adjacent piers 3 bear the upper load and the horizontal thrust transmitted from the arch ring 12, as well as the soil pressure transmitted from both sides of the bridge body 1, thereby enhancing the overall bearing performance of this part of the wall and ensuring the safety of the bridge body.
[0047] The oblique anchor rods 6 cooperate with the masonry materials of the bridge body 1 itself to form a component similar to a reinforced masonry beam and slab, which can fully utilize the tensile properties of the steel bars and the compressive properties of the masonry materials, and jointly bear the load transmitted by the bridge deck 4 and the arch ring 12, forming a reinforced masonry arch ring 12, thereby enhancing the plastic properties of the arch ring 12.
[0048] It should be noted that static drilling technology is required to anchor the vertical anchor rods 5, the oblique anchor rods 6, and the horizontal anchor rods 7 into the bridge body 1 and other components. In view of the special characteristics of the masonry brick and stone solid-web arch cultural relic bridge, its interior is mostly a filler structure. In order to minimize the disturbance and interference to the old components, vibration and water operations are not allowed. Therefore, traditional electric hammer drilling or water drill core drilling are not used. Instead, dry, waterless, and stress-free drilling rigs are used for drilling.
[0049] Reference Figure 6 、 Figure 9 The vertical anchor rods 5, the oblique anchor rods 6, and the horizontal anchor rods 7 are all made of stainless steel threaded steel bars with non-slip surfaces, and sleeves 9 are sleeved on the outer surfaces of the vertical anchor rods 5, the oblique anchor rods 6, and the horizontal anchor rods 7. The sleeves 9 have good tensile properties and can constrain the aggregate slurry in the sleeves. Cement-based grouting material 8 is used to fill and fix the vertical anchor rods 5, the oblique anchor rods 6, and the horizontal anchor rods 7 with the sleeves 9. The cement-based grouting material 8 has the characteristics of high strength, no shrinkage, and no expansion.
[0050] Through the above arrangement, the cement-based grouting material 8 mixed with water has good fluidity and can be transported up to 30 meters under a low pressure of 3 MPa. In addition, the cement-based grouting material 8 also has the characteristics of high strength, no shrinkage, and no expansion.
[0051] The bushing 9 is made of polyurethane fiber material, and its transverse fibers have tensile properties after being filled with slurry, and there are meshes with uniform density between the fibers, which are used for the penetration of slurry in the bushing and the restraint of aggregate. It swells to a limited extent in the gaps of masonry blocks, exerting a mechanical grip on the anchor rod.
[0052] The implementation principle of the anchor rod reinforcement structure in the body of a cultural relic brick and stone ancient bridge in the embodiment of the present application is: before using the horizontal anchor rod 7, the oblique anchor rod 6, and the vertical anchor rod 5 to jointly reinforce the bridge body, a static drilling technology should be used first. First, the drilling machine should be positioned and fixed, and the drilling machine connector and the diamond drill bit should be installed. Then, the drilling machine should be started, the base material should be drilled, the guide hole should be completed, and the drill guide should be installed. The drilling machine should be started and the drilling should continue to be drilled into the base material. After completion, the connector should be removed, the extension sleeve should be connected, and the drill system should be connected downwards. The drilling machine should be started again, the base material should be drilled again, the extension sleeve should be connected again, and the drill system should be connected downwards. After the hole is drilled, the drill core can be directly pulled off and lifted up.
[0053] After the drilling is completed, the bushing 9 needs to be placed inside the drilled hole first, and then the vertical anchor rods 5 are vertically implanted from the holes drilled in the bridge deck 4 to the bridge body 1 and the pier 3. The vertical anchor rods 5 pass through the bridge body 1 and the pier 3, penetrate into the foundation 10 and the bearing rock stratum 11, and form a group of micro piles in the bridge body 1 and the pier 3. These vertical anchor rods 5 can effectively enhance the integrity and vertical bearing capacity of the bridge body 1 and the pier 3, directly transfer the upper load to the foundation 10 and the bearing rock stratum 11, and when the water level is high during the flood season, During flood season, the flood will produce direct transverse shear damage to the bridge pier 3 and the pediment wall. The pediment wall on the upstream side of the bridge body 1 directly faces the impact of the flood, generating a transverse horizontal thrust. During the flood discharge process on the downstream side of the bridge body 1, the water flow will form an adsorption effect on the lower pediment wall, generating a transverse horizontal tension. Such a stress condition often causes transverse damage to the bridge pier 3 during the flood season. After the vertical anchor rod 5 is implanted, the bridge pier 3 can effectively improve its resistance to horizontal thrust and extend the safe service life of the bridge body 1.
[0054] When the vertical anchor rods 5 are implanted, the oblique anchor rods 6 can be implanted obliquely into the arch ring 12 and the bridge body 1 through the holes in the bridge deck 4. During the installation of the oblique anchor rods 6, different drilling and installation methods can be adopted according to the traffic conditions of the bridge deck 4. When there is transportation pressure from the bridge deck 4, holes can be drilled upward from the arch soffit 2 at the bottom of the arch ring 12 for installation. If there are no installation conditions under the bridge or the river has navigation requirements, holes can be drilled downward from the top for installation. The horizontal anchor rods 7 can be installed in the same way as the vertical anchor rods 5 and the oblique anchor rods 6.
[0055] When the vertical anchor rods 5, the oblique anchor rods 6 and the horizontal anchor rods 7 are all inserted, the cement-based grouting material 8 is injected between the bushing 9 and the vertical anchor rods 5, the oblique anchor rods 6 and the horizontal anchor rods 7 for filling and reinforcement. After the cement-based grouting material 8 solidifies, the reinforcement of the ancient bridge is completed.
[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. An anchor rod reinforcement structure in a cultural relic brick and stone ancient bridge, comprising a bridge body (1) and a bridge abutment (13), characterized in that: The lower part of the bridge body (1) is provided with an arch ring (12), the lower part of the arch ring (12) is provided with a bridge pier (3), the lower part of the bridge pier (3) is provided with a foundation (10), the lower part of the foundation (10) is provided with a bearing rock layer (11), the upper part of the bridge body (1) is provided with a bridge deck (4), and the interior of the bridge body (1) is penetrated by a plurality of vertical anchor rods (5), oblique anchor rods (6), and horizontal anchor rods (7).
2. The anchor rod reinforcement structure in the body of a cultural relic brick and stone ancient bridge according to claim 1, characterized in that: One end of the plurality of vertical anchor rods (5) vertically penetrates the bridge deck (4) and the bridge body (1), and the other end of the vertical anchor rods (5) vertically penetrates the bridge pier (3) and the foundation (10), and is fixedly anchored into the bearing rock layer (11).
3. The anchor rod reinforcement structure in the body of a cultural relic brick and stone ancient bridge according to claim 1, characterized in that: One end of the plurality of oblique anchor rods (6) obliquely penetrates the bridge deck (4) and the upper portion of the bridge body (1), and the other end of the oblique anchor rods (6) obliquely penetrates the arch ring (12) and is anchored into the lower portion of the bridge body (1).
4. The anchor rod reinforcement structure in a cultural relic brick and stone ancient bridge according to claim 1, characterized in that: A portion of the horizontal anchor rods (7) is fixedly passed through the arch ring (12), and another portion of the horizontal anchor rods (7) is fixedly passed through the upper portion of the bridge body (1).
5. The anchor rod reinforcement structure in a cultural relic brick and stone ancient bridge according to claim 1, characterized in that: The lower portion of the arch ring (12) is provided with an arch soffit (2) with both ends of the opening fixedly connected to the bridge pier (3).
6. The anchor rod reinforcement structure in a cultural relic brick and stone ancient bridge according to claim 1, characterized in that: The vertical anchor rod (5), the oblique anchor rod (6), and the horizontal anchor rod (7) are all sleeved with bushings (9) having tensile properties and constraining the aggregate slurry in the sleeves.
7. The anchor rod reinforcement structure in a cultural relic brick and stone ancient bridge according to claim 1, characterized in that: A cement-based grouting material (8) with non-shrinkage and non-expansion properties is provided between the vertical anchor rod (5), the oblique anchor rod (6), the horizontal anchor rod (7) and the bushing (9).
8. The anchor rod reinforcement structure in a cultural relic brick and stone ancient bridge according to claim 1, characterized in that: The vertical anchor rod (5), the oblique anchor rod (6) and the horizontal anchor rod (7) are all configured as stainless steel threaded steel bars with anti-slip surfaces.