Brickstone ancient tower surrounding hoop reinforcing device and reinforcing method adopting prestress efficient control

Abstract

The invention discloses a masonry ancient tower hooping reinforcing device and method adopting prestress efficient control, and belongs to the technical field of ancient building reinforcement. The masonry ancient tower hooping reinforcing device comprises vertical angle steel arranged on all edges of a tower body; and a plurality of steel cable modules and a plurality of adjusters used for adjusting the tensioning force of each steel cable module are connected between every two adjacent pieces of vertical angle steel. Through joint cooperation of the regulator and the steel cable module and combination of key elements of pre-tightening force application during hoop reinforcement implementation, application of the pre-tightening force between hoop cable systems is synchronously and efficiently controlled, looseness of the pre-tightening force can be effectively avoided, the initial stress of a reinforced tower body can be reduced, the safety margin of the structure is improved, and the safety performance of the structure is improved. And crack development of the reinforced tower body is inhibited. According to the method, the apparent morphology of the ancient tower cannot be greatly changed when the tower body is reinforced, the basic principles of minimum intervention, identifiability, reversibility and the like of cultural relic protection are met, the flexibility is high, the stress mechanism is clear, and cooperative work among different components is reasonable.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ancient building reinforcement, and in particular, relates to a masonry ancient tower hoop reinforcement device and method using prestress efficient control. BACKGROUND

[0002] Masonry ancient towers are important historical and cultural heritage of China, which collects traditional Chinese history and culture and building construction techniques. However, the ancient towers have been affected by natural environment erosion and human factors for a long time, and the structural safety faces severe challenges. Under the action of strong earthquakes, the tower body will crack at weak parts; weathering erosion will cause the material properties of the tower body to degrade, causing bricks and mortar to fall off and lose cohesion; uneven settlement of the foundation will cause additional stress and lead to tower body tilting. Based on this, under static action, due to the high-rise structure and large slenderness ratio of the tower body, potential structural damage will cause structural collapse risk. Under the action of strong earthquakes, the tower body has great safety hazards, and a method that can improve the overall structural bearing capacity through simple reinforcement method is urgently needed to achieve longer protection.

[0003] The damage types of vertical cracks, mortar loss, and surface weathering of the tower body will cause stress concentration in the local bearing of the tower body, decrease in brick and stone friction engagement force, and reduction in effective cross section. The existing reinforcement methods for the tower body mainly include grouting, adding support structure, external FRP pasting, and hoop reinforcement, but these methods have certain inapplicability. Grouting reinforcement may damage the original structure due to material expansion, and the durability is affected by material aging; adding support structure will change the appearance of the ancient tower, which is contrary to the principle of ancient building reinforcement; external FRP pasting method causes irreversible damage to the tower body and is difficult to maintain in the later period; these technologies generally have large intervention to the original structure and cannot fully meet the long-term protection demand, and a more suitable reinforcement scheme is urgently needed. Hoop reinforcement will not cause irreversible damage to the tower body, and through the application of hoop pressure, the cracks are closed to restore the friction and engagement force between the masonry, and the stress distribution is uniform to avoid stress concentration; but the existing hoop reinforcement method has limited improvement of the stability of the ancient tower due to small reinforcement area, or is combined with the reinforcement of the embedded steel bars to improve the stability of the tower body, which greatly interferes with the ancient tower and violates the principle of reinforcement, and the traditional hoop reinforcement method has poor controllability and cannot accurately apply the pre-tightening force, so a high-precision controllable hoop reinforcement device is urgently needed.

[0004] Chinese patent application number CN202222494575.6 discloses a support device for masonry ancient tower foundation reinforcement, including tower body and support column, the opposite side of the front and rear support columns are each provided with an adjusting support mechanism, the opposite side of the left and right support columns is provided with a stretching mechanism, by setting the adjusting support mechanism, the movable threaded sleeve can drive the contact plate to approach the tower body, realizing the support effect of the tower body. When pulling the support column, the intersection of the cross rod rotates around the inserted rod as the rotation point, and the inside of the cross rod rotates around the rotation shaft as the rotation point, realizing the adjustment of the support column. The device can effectively support the ancient tower, prevent the overall ancient tower from being damaged by external loads, and has good adjustability. However, the device only supports in a single horizontal direction, and the other directions are only surrounded by fixed rods, making it difficult to respond to complex external loads simultaneously. Moreover, the device only reinforces the overall tower body, and cannot effectively protect the tower body and the contact between the device and the body. In addition, the device is difficult to apply to large, complex internal and external form hexahedral or octahedral ancient towers.

[0005] Chinese patent application number CN201410413913.6 provides a masonry ancient tower overall seismic reinforcement method, which calculates the cross-sectional area of the steel used in construction, then vertically marks grooves on each tower surface of each tower body; the grooves on the same direction tower surface correspond one by one, and the corresponding setting slots are set on the same direction tower surface of different tower bodies; the same number of through holes as the number of setting slots are drilled on the eaves; a plurality of planting holes are drilled on the tower foundation, and reinforcing steel is planted side by side in the planting holes; the outer tower surface and the inner tower surface of each tower body are provided with a surrounding hoop; the outer tower surface and the inner tower surface of the lower part of each eaves are provided with a surrounding hoop; all the surrounding hoops of the outer tower surface are connected with the reinforcing rods; and the cracks of the ancient tower are filled with cement mortar. This method is beneficial to improving the overall performance of the ancient tower body and can greatly improve the overall stability of the ancient tower. However, this reinforcement method fills cement mortar in the cracks, which is difficult to ensure compactness, and may cause secondary damage to the original structure due to material expansion and shrinkage. Moreover, the ancient tower was built a long time ago, and the slotting on the damaged part of the original structure aggravates the damage to the tower body, so this reinforcement method has certain inapplicability.

[0006] Chinese patent application number CN201920192421.7 provides a reinforcement device for ancient tower masonry, including connecting rods and connecting blocks, the connecting rods and the connecting blocks are connected to form a quadrilateral. This device reduces the distance between the two oppositely arranged connecting rods to achieve reinforcement of the tower body. However, this device does not consider that ancient towers are mostly made of masonry, and the material hardness of the body and the reinforcing body is quite different, which can easily cause secondary damage to the tower body between the reinforcing body and the reinforced body. In addition, this device only reinforces the local part of each layer of the ancient tower, and the overall stability performance of the ancient tower is limited. If the protected area is to be increased, the amount of the device needs to be increased, but too many transverse pull rods can damage the appearance of the ancient tower, so the amount of the device is limited, and it is difficult to efficiently achieve the protection effect.

[0007] In view of the principles to be followed in cultural relic protection, such as "minimum intervention, reversibility, and identifiability", special requirements are proposed for the technical applicability when reinforcing the ancient tower. In combination with the tower body shape characteristics and structural stress characteristics, the existing ancient tower reinforcement methods have certain deficiencies in terms of compatibility and applicability; and as an important part of human historical and cultural heritage, the safety performance of the ancient tower will be damaged, which will cause serious safety hazards and loss of historical and cultural heritage, so the existing technology needs to be improved. SUMMARY

[0008] The purpose of the present application is to provide a masonry ancient tower hoop reinforcement device and method using prestressed efficient control. Through the cooperation between the adjuster and the steel cable module, combined with the key construction technology and quality control implemented by the hoop reinforcement method, the ancient tower will not have a great impact on the appearance of the cultural relic body during reinforcement, and better meet the basic principles of cultural relic protection such as "minimum intervention, identifiability and reversibility". The process flexibility is greater during the implementation of the present application, and high-quality installation between modules is easy to achieve. Through the engagement between the gears, high-precision control of the pre-tightening force of the cable system is applied, which can improve the constraint degree of the tower body. The reinforced body can work efficiently with the cultural relic body after reinforcement, and the working mechanism is clear, and the effect is obvious.

[0009] To achieve the purpose of the present application, the technical scheme adopted is: a masonry ancient tower hoop reinforcement device using prestressed efficient control, comprising vertical angle steels arranged on each edge of the tower body, and a plurality of steel cable modules and a plurality of adjusters for adjusting the tension of each steel cable module are connected between adjacent two vertical angle steels, to realize the application of pre-tightening force to the tower body, and further improve the constraint on the tower body.

[0010] Further, the inner wall of the vertical angle steel further has a rubber pad.

[0011] Further, the steel cable module comprises a steel cable, both ends of the steel cable extend towards adjacent two vertical angle steels after penetrating through adjacent two vertical angle steels; the adjuster comprises an inner steel block and an outer steel block installed between adjacent two vertical angle steels, and both ends of the steel cable are connected with threaded rods, and both sides of the inner steel block are connected with the threaded rods at the ends of the steel cable; the outer steel block further has an adjusting mechanism installed thereon, which can synchronously apply a transverse tension to both ends of the steel cable through the two threaded rods.

[0012] Further, the steel cable module further comprises a limiting rod installed on the opposite sides of adjacent two vertical angle steels, and a transverse support rod is commonly inserted on the two limiting rods corresponding to each other on adjacent two vertical angle steels, and the inner steel block is installed on the transverse support rod.

[0013] Further, the steel cable module has two steel cables, and the two steel cables are located on both sides of the transverse support rod.

[0014] Further, the limiting rod is sleeved with a spring and a limiting plate, the spring abuts against the limiting plate and the vertical angle steel, and the end surface of the transverse supporting rod is fixed to the limiting plate.

[0015] Further, the steel cable module further comprises an ear plate installed on the opposite side of the adjacent two vertical angle steels, the limiting rod is fixed to the ear plate, and the ear plate is further provided with a limiting ring for the steel cable to pass through.

[0016] Further, the threaded rods at the two ends of the steel cable are opposite in screw direction; the adjusting mechanism further comprises an inner adjusting rod rotatably installed on the inner steel block, the two ends of the inner adjusting rod are engaged with the threaded rods at the two ends of the steel cable; the inner steel block is further provided with an installation groove, the middle part of the inner adjusting rod is located in the installation groove, and a driving structure for driving the inner adjusting rod to rotate is installed in the installation groove.

[0017] Further, the two ends of the inner adjusting rod are further provided with annular limiting plates, and the two annular limiting plates are matched with the two sides of the inner steel block.

[0018] Further, the outer steel block covers the installation groove on the inner steel block, the driving structure comprises an outer gear rotatably supported in the outer steel block and an adjusting gear, and the inner adjusting rod is further provided with an inner gear, and the outer gear is engaged with the inner gear and the adjusting gear at the same time.

[0019] Further, one end of a driving adjusting rod for installing the adjusting gear penetrates the outer steel block and extends outward, and the extended end of the driving adjusting rod is further provided with an adjusting part.

[0020] Further, the two ends of the outer adjusting rod on the outer gear and one end of the driving adjusting rod are both provided with rotatable longitudinal limiting plates, and the longitudinal limiting plates are fixed on the side surface of the inner steel block.

[0021] The reinforcing method of the masonry ancient tower hoop reinforcing device with prestress efficient control comprises the following steps: Step one, installing vertical angle steels on each edge of the tower body at the part of the ancient tower that needs to be reinforced; Step two, passing the steel cable through the inner steel block in the adjuster, making the two ends of the steel cable pass through the adjacent two vertical angle steels in turn, and connecting the two ends of the steel cable with the adjuster respectively; Step three, adjusting the tension of the steel cable through the adjusting mechanism on the adjuster.

[0022] The beneficial effects of the present application are: (1) The reinforcing device is designed flexibly. Through the external shape of the ancient tower, vertical angle steels with corresponding opening angles and corresponding sizes are selected, so that the reinforcing device can be adapted to reinforce ancient towers with different external shapes. Moreover, the vertical angle steels can be flexibly selected according to the form of the tower to be reinforced, so that the reinforcing device can be applied to ancient towers with different planar shapes, providing a strong adjustable space for the application of different working conditions in actual engineering.

[0023] (2) The components work in coordination and the stress mechanism is clear. The application of the rubber pad layer on the inner wall of the vertical angle steel makes the tower to be reinforced not produce obvious deformation incoordination due to the large difference in material stiffness between the tower and the vertical angle steel, so that the stress is more concentrated. The gear adjustment can efficiently observe the stress state of the tower body and avoid secondary damage to the tower structure due to the difference in material hardness and the difference in stiffness between the reinforcing member and the reinforced body.

[0024] (3) High-precision control and efficient synchronous adjustment of pre-tightening force. The design of the adjuster makes the threaded rods connected at both ends of the steel cable move synchronously, thereby driving the steel cable to generate a transverse tension and making the vertical angle steel bear force synchronously. The controllability of the pre-tightening force is strong, the precision is high, and the pre-tightening force can be effectively avoided. At the same time, the initial stress of the reinforced tower body can be reduced, the safety margin of the structure can be improved, the development of cracks in the reinforced tower body can be inhibited, and the stability of the tower structure can be improved. In addition, by inserting and cooperating the two ends of the transverse support rod with the limiting rod, and cooperating the spring on the limiting rod with the limiting plate at the end of the transverse support rod, the interaction between the spring and the transverse support rod can be improved when the steel cable generates a transverse tension, which can prevent the vertical angle steel from being bent and damaged due to a large transverse stress.

[0025] (4) Small intervention to the cultural relics, in line with the principle of minimum intervention. All components of the reinforcing device are used on the surface of the tower, without the need to drill holes on the tower or in the eaves, and will not cause damage to the ancient tower itself, in line with the "minimum intervention" principle. The components can be prefabricated in the factory in advance, the manufacturing process is relatively simple, the repeating unit is large, and the standardization degree is high, which makes the prefabrication efficiency high, is conducive to the control of product quality, and the geometric configuration of the reinforcing device is regular, which can realize fast assembly and disassembly, reduces the assembly difficulty of the reinforcing device in the later maintenance and replacement, and conforms to the "reversibility" principle. In addition, the setting position of the reinforcing device is at the corner of the tower, under the eaves, and on the bottom plate, which conforms to the "identifiability" principle.

[0026] (5) Economic and environmental, good social benefits. The material of each component of the reinforcing device is mainly steel, which can be assembled by using simple tools, simple and fast; each component is light in weight, small in size, easy to store and transport, and low in cost; the reinforcing device adopts dry construction when in use, which will not cause environmental pollution, can effectively avoid environmental pollution, noise pollution and dust pollution caused by a large number of welding operations and wet operations, and has little influence on surrounding people and things; in addition, the ancient tower is a material carrier of architectural techniques, religious art and regional culture, the reinforcing device can constrain the deformation of the tower body, prevent the tower body from collapsing or locally collapsing, effectively avoid irreversible cultural loss, and has obvious economic and social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the general description of the application given above, and the detailed description of the embodiments given below, serve to explain the principles of the present application. These drawings should be understood as being merely illustrative of exemplary embodiments of the present application and are, therefore, not to be considered limiting of its scope as the application can admit to other equally effective embodiments.

[0028] Figure 1 A schematic view of the masonry ancient tower surrounding hoop reinforcing device provided by the present application and installed on the ancient tower is shown; Figure 2 A schematic view of the overall structure of the masonry ancient tower surrounding hoop reinforcing device provided by the present application and installed on the ancient tower is shown; Figure 3 A schematic view of the vertical angle steel is shown; Figure 4 A schematic view of the steel cable module and the adjuster is shown; Figure 5 A schematic view of the structure of the steel cable module is shown; Figure 6 A schematic view of the structure of the ear plate is shown; Figure 7 A schematic view of the structure of the adjuster is shown; Figure 8 A front view of the adjuster is shown; Figure 9 A schematic view of the internal structure of the adjuster is shown; Figure 10 A schematic view of the disassembly of the adjuster structure is shown; Figure 11 A schematic view of the structure of the threaded rod is shown; Figure 12 A schematic view of the structure of the steel cable clamp is shown.

[0029] Markings and corresponding component names in the drawings: 1, tower body; 2, vertical angle steel; 3, rubber pad; 4, steel cable module; 5, adjuster; 401. Ear plate; 402. Steel cable; 403. Limiting ring; 404. Spring; 405. Limiting rod; 406. Threaded rod; 407. Limiting ring; 408. Steel cable clamp; 409. Limiting plate; 410. Lateral support rod; 501. Inner steel block; 502. Outer steel block; 503. Annular limiting plate; 504. Inner adjusting rod; 505. Inner gear; 506. Outer gear; 507. Adjusting gear; 508. Longitudinal limiting plate; 509. Outer adjusting rod; 510. Active adjusting rod; 511. Adjusting part. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figure 1 , Figure 2 As shown, this invention provides a prestressed, high-efficiency controlled reinforcement device for brick and stone ancient pagodas. It includes vertical angle steels 2 arranged on each edge of the same circumference of the pagoda body 1. The opening angle of the vertical angle steels 2 is adapted to the angle between two adjacent faces on the same circumference of the pagoda body 1, and the length of the vertical angle steels 2 can be adjusted according to actual conditions, or it can be directly adapted to the spacing between two adjacent eaves on the pagoda body 1. Simultaneously, steel cable modules 4 are connected between adjacent vertical angle steels 2, and the steel cable modules 4 tighten the adjacent vertical angle steels 2. The number of steel cable modules 4 between adjacent vertical angle steels 2 can be adjusted according to actual conditions, but it is best to install steel cable modules 4 between the ends of adjacent vertical angle steels 2. Of course, as needed, while satisfying the reinforcement requirements of the pagoda body 1, the number of steel cable modules 4 between adjacent vertical angle steels 2 can also be one, three, or even more. When there is only one steel cable module 4, the length of the vertical angle steel 2 can correspond only to the part of the tower body 1 that needs to be reinforced or repaired. In this case, the two ends of the steel cable module 4 correspond to the middle part of the vertical angle steel 2 respectively. When there are more than two steel cable modules 4, except for two steel cable modules 4 that correspond to the two ends of two adjacent vertical angle steels 2 respectively, the remaining steel cable modules 4 can be arranged at uniform intervals along the axial direction of the vertical angle steel 2.

[0033] When the two ends of the steel cable module 4 are connected with the two adjacent vertical angle steels 2 respectively, in order to facilitate the adjustment of the pre-tightening force between the two adjacent vertical angle steels 2, each steel cable module 4 is further provided with an adjuster 5, which can directly adjust the pre-tightening force of the steel cable module 4.

[0034] In the present application, as shown in Figure 4 、 Figure 5 The steel cable module 4 includes a steel cable 402, and the vertical angle steel 2 has a structure for the steel cable 402 to pass through when the steel cable 402 is installed. When the steel cable 402 is installed, the two ends of the steel cable 402 are looped after passing through the two adjacent vertical angle steels 2 and extend between the two adjacent vertical angle steels 2. At the same time, the adjuster 5 includes an inner steel block 501 and an outer steel block 502 located between the two adjacent vertical angle steels 2. Before the two ends of the steel cable 402 pass through the two adjacent vertical angle steels 2, the steel cable 402 first penetrates the inner steel block 501. The hole diameter of the through hole on the inner steel block 501 for the steel cable 402 to penetrate is slightly larger than the diameter of the steel cable 402. After the two ends of the steel cable 402 pass through the two adjacent vertical angle steels 2 and loop between the two adjacent vertical angle steels 2, the two ends of the steel cable 402 are connected with the inner steel block 501. In order to ensure that the steel cable 402 tightens the two adjacent vertical angle steels 2 and adjust the tightening force of the steel cable 402, the outer steel block 502 is provided with an adjusting mechanism for adjusting the transverse pre-tightening force of the steel cable 402. Since the length of the steel cable 402 is fixed and the two ends of the steel cable 402 loop after passing through the two adjacent vertical angle steels 2, when the distance between the two ends of the steel cable 402 changes, the effective length of the steel cable 402 will change. At the same time, the effective length of the steel cable 402 changes to pull or loosen the two adjacent vertical angle steels 2, so that the two adjacent vertical angle steels 2 are gradually tightened or loosened.

[0035] In the present application, as shown in Figure 5 、 Figure 6As shown, in order to facilitate the installation of the adjuster 5, the steel cable module 4 further comprises limiting rods 405 installed on the adjacent two vertical angle steels 2, and the limiting rods 405 on the adjacent two vertical angle steels 2 are oppositely extended; on the adjacent two vertical angle steels 2, two limiting rods 405 corresponding to each other are further provided with a transverse supporting rod 410, and the end faces of the two ends of the transverse supporting rod 410 are all provided with plug-in holes; when the transverse supporting rod 410 is installed, the two limiting rods 405 corresponding to each other on the adjacent two vertical angle steels 2 are respectively inserted into the plug-in holes at the two ends of the transverse supporting rod 410; when the plug-in holes at the two ends of the transverse supporting rod 410 are designed, the length of the plug-in hole is longer than the length of the limiting rod 405 inserted into the plug-in hole, and after the two ends of the transverse supporting rod 410 are inserted into the two limiting rods 405, the transverse supporting rod 410 can be moved and adjusted in the horizontal direction. In addition, the inner steel block 501 in the adjuster 5 is further provided with a through hole for the transverse supporting rod 410 to penetrate, and the diameter of the through hole is in clearance fit with the diameter of the transverse supporting rod 410, so that when the inner steel block 501 is installed, the inner steel block 501 can be cooperated with the transverse supporting rod 410 through the steel cable 402, so that the adjuster and each component work coordinately.

[0036] In the present application, as shown in Figure 4 , Figure 5 The steel cable 402 in the steel cable module 4 is two, and the installation modes of the two steel cables 402 are the same, at this time, the two steel cables 402 are located on the two sides of the transverse supporting rod 410, and the passing positions of the two steel cables 402 on the vertical angle steel 2 are not the same position, so as to avoid that the two steel cables 402 in the steel cable module 4 cause damage to the vertical angle steel 2 when being pulled tight.

[0037] In order to avoid that the transverse supporting rod 410 shakes between the two limiting rods 405 oppositely arranged, as shown in Figure 6 The limiting rod 405 is further sleeved with a spring 404 and a limiting plate 409, the limiting plate 409 can move along the axial direction of the limiting rod 405, one end of the spring 404 abuts against the vertical angle steel 2, the other end of the spring 404 abuts against the limiting plate 409, and the end of the transverse supporting rod 410 is welded and fixed with the limiting plate 409. Through the cooperation of the spring 404 and the limiting plate 409, after the two ends of the transverse supporting rod 410 are respectively inserted into the two limiting rods 405, the spring 404 can push the limiting plate 409 through the elastic force of itself, and through the cooperation of the springs 404 on the two limiting rods 405, the transverse supporting rod 410 can remain stable under the condition of not being subjected to external force after being installed, and the transverse supporting rod 410 can normally displace in the horizontal direction when subjected to external force.

[0038] In order to avoid that the installation of the steel cable 402 and the limiting rod 405 causes damage to the structure of the vertical angle steel 2, as shown in Figure 5 , Figure 6As shown, the steel cable module 4 further comprises an ear plate 401 mounted on opposite sides of two adjacent vertical angle steels 2, the ear plate 401 is welded with the vertical angle steel 2, and a limiting rod 405 is welded and fixed on the ear plate 401; meanwhile, two limiting rings 403 are welded on the ear plate 401, the central axis of the limiting ring 403 is consistent with the axis direction of the vertical angle steel 2, and the two steel cables 402 in the steel cable module 4 are respectively threaded through the two limiting rings 403 when installed, so that the vertical angle steel 2 does not need to be processed to pass through the through hole for the steel cable 402, not only can avoid the damage to the structure of the vertical angle steel 2, but also can avoid the damage to the vertical angle steel 2 caused by the force of the steel cable 402 directly acting on the vertical angle steel 2 in the subsequent tensioning process. In addition, in order to pass through the ear plate 401, two through holes for the steel cable 402 to pass through can also be directly formed on the ear plate 401, although this design can make the steel cable 402 pull the vertical angle steel 2 when tensioned, but since the vertical angle steel 2 is installed to adhere to the surface of the tower body 1, the surface of the tower body 1 will be inevitably pressed when the steel cable 402 passes through the through hole on the ear plate 401, which is easy to cause damage to the surface of the tower body 1.

[0039] In order to adjust the two ends of the steel cable 402 to approach or move away from each other, as shown in the drawings, Figure 5 The adjusting mechanism comprises threaded rods 406 connected at the two ends of the steel cable 402 respectively, the threaded rods 406 are detachably connected with the end portions of the steel cable 402, and the threaded directions of the threaded rods 406 connected at the two ends of the steel cable 402 are opposite; meanwhile, as shown in the drawings, Figures 7 to 10 The adjusting mechanism further comprises an inner adjusting rod 504 rotatably mounted on the inner steel block 501, the inner adjusting rod 504 is a shaft sleeve structure, the two ends of the inner adjusting rod 504 respectively penetrate through two opposite side walls on the inner steel block 501, and two inner threads engaged with the two threaded rods 406 are arranged on the inner wall of the inner adjusting rod 504, and the inner steel block 501 further has a mounting groove, the mounting groove is an open groove, the middle portion of the inner adjusting rod 504 and the middle portion of the horizontal supporting rod 410 are located in the mounting groove, and a driving structure for driving the inner adjusting rod 504 to rotate is further mounted in the mounting groove.

[0040] In the present application, in order to facilitate the connection of the threaded rod 406 and the end portion of the steel cable 402, and make the connection of the threaded rod 406 and the end portion of the steel cable 402 easy to disassemble, as shown in the drawings, Figure 11 , Figure 12As shown, a limiting ring 407 is installed at one end of the threaded rod 406 away from the inner adjusting rod 504, the limiting ring 407 can rotate at the end of the threaded rod 406, when the threaded rod 406 needs to be connected with the end of the steel cable 402, the limiting ring 407 is sleeved on the end of the steel cable 402, the end of the steel cable 402 is folded, then two steel cable clamps 408 are used to tightly fix the end of the steel cable 402 on the steel cable 402, finally two steel cable clamps 408 are fixed by bolts. This design makes the threaded rod 406 and the end of the steel cable 402 more convenient to disassemble, when disassembly is needed, the bolts locking the two steel cable clamps 408 are loosened, then the limiting ring 407 on the threaded rod 406 is removed from the end of the steel cable 402.

[0041] In order to avoid the axial displacement of the inner adjusting rod 504 after being installed on the inner steel block 501, as shown in Figure 9 、 Figure 10 , two annular limiting plates 503 are also fixed at the two ends of the inner adjusting rod 504, the diameter of the annular limiting plate 503 is larger than the hole diameter of the through hole for the inner adjusting rod 504 to pass through, and the two annular limiting plates 503 are installed at the two ends of the inner adjusting rod 504 and cooperate with the two side surfaces of the inner steel block 501, that is, the normal rotation of the inner adjusting rod 504 is ensured, the axial displacement of the inner adjusting rod 504 is prevented, and the rotation of the inner adjusting rod 504 is more stable.

[0042] At the same time, in order to facilitate the installation of the driving structure, as shown in Figure 7 、 Figure 8 、 Figure 10As shown in the figure, the outer steel block 502 is in a cap structure, covering the mounting groove on the inner steel block 501, and the driving structure comprises two outer adjusting rods 509 rotatably mounted in the outer steel block 502, each of which is provided with an outer gear 506, and each of the two inner adjusting rods 504 is provided with an inner gear 505, which is engaged with the two outer gears 506 respectively; meanwhile, the driving structure further comprises a driving adjusting rod 510 rotatably mounted in the outer steel block 502, which is located between the two outer adjusting rods 509, and is further provided with an adjusting gear 507 engaged with the two outer gears 506 simultaneously. By rotating the driving adjusting rod 510, the adjusting gear 507 on the driving adjusting rod 510 rotates synchronously, and the two outer gears 506 rotate synchronously while the adjusting gear 507 rotates synchronously, and the two outer adjusting rods 509 rotate synchronously while the two outer gears 506 rotate synchronously, so that the two inner adjusting rods 504 rotate synchronously through the engagement of the outer gears 506 and the inner gears 505. Since the inner adjusting rod 504 is engaged with the two threaded rods 406, the two threaded rods 406 approach or move away from each other while the inner adjusting rod 504 rotates, thereby pulling the two ends of the steel cable 402 to approach or move away from each other, so that the effective length of the steel cable 402 is adjusted.

[0043] In order to facilitate the adjustment of the driving adjusting rod 510, the driving adjusting rod 510 is installed as shown in the figure, Figure 8 , Figure 9 The end of the driving adjusting rod 510 can extend outwardly through the outer steel block 502, and an adjusting part 511 is installed at the extended end of the driving adjusting rod 510, which cooperates with the surface of the outer steel block 502, and the adjusting part 511 can be a handle with anti-slip pattern, or a hexagonal shape, so that when the driving adjusting rod 510 needs to be rotated, the staff can rotate the driving adjusting rod 510 through the adjusting part 511, making the driving of the driving adjusting rod 510 more convenient. When the adjusting part 511 is hexagonal, the staff can also hold the adjusting part 511 with a wrench and then turn the wrench to rotate the driving adjusting rod 510.

[0044] In order to avoid axial displacement of the driving adjusting rod 510 and the outer adjusting rod 509 after installation, as shown in the figure, Figure 8 , Figure 9As shown, the two ends of the active adjusting rod 510 and the end of the outer adjusting rod 509 without the adjusting part 511 are all through the side of the outer steel block 502, and a rotatable longitudinal limiting plate 508 is installed at the two ends of the active adjusting rod 510 and the end of the outer adjusting rod 509 without the adjusting part 511, a rectangular hole for accommodating the longitudinal limiting plate 508 is formed on the outer side of the outer steel block 502, so that the longitudinal limiting plate 508 can prevent the active adjusting rod 510 and the outer adjusting rod 509 from being axially displaced after installation without being directly fixed with the outer steel block 502, and the installation and removal of the longitudinal limiting plate 508 are more convenient. Of course, after the longitudinal limiting plate 508 is installed in the rectangular hole, the longitudinal limiting plate 508 can be directly welded and fixed with the outer steel block 502.

[0045] In the present application, as shown in the drawings, Figure 7 As shown, in order to prevent the vertical angle steel 2 from being pressed against the outer wall of the tower body 1 and causing damage to the outer wall of the tower body 1, a rubber pad layer 3 is installed on the inner wall of the vertical angle steel 2, and when the vertical angle steel 2 is tensioned by the steel cable 402, the rubber pad layer 3 is pressed against the outer wall of the tower body 1, and the rubber pad layer 3 prevents the tower body 1 from being deformed obviously and out of coordination due to the large difference in material rigidity between the tower body 1 and the vertical angle steel 2, so that the stress is more concentrated and secondary damage to the tower body 1 is avoided.

[0046] The processing method of the masonry ancient tower hoop reinforcing structure is as follows: Select the lug plate 401, and weld a limiting ring 403 at the upper 1 / 6 of one side of the lug plate 401, and weld another limiting ring 403 at the lower 1 / 6 of the same side of the lug plate 401, and then weld a limiting rod 405 at the middle of the same side of the lug plate 401; weld the lug plate 401 with the limiting ring 403 and the limiting rod 405 at the upper edges of the two sides of the vertical angle steel 2 and the lower edges of the two sides of the vertical angle steel 2.

[0047] A horizontal through hole with a diameter of 16 mm is formed on the inner steel block 501, 25 mm from the front side of the inner steel block 501 and 49 mm from the upper side of the inner steel block 501, and the through hole is adapted in diameter to the steel cable 402, and another through hole symmetrical to the through hole is formed on the inner steel block 501.

[0048] A horizontal through hole with a diameter of 30 mm is formed on the inner steel block 501, 25 mm from the front side of the inner steel block 501 and 85 mm from the upper side of the inner steel block 501, and the through hole is adapted in diameter to the inner adjusting rod 504, and another through hole symmetrical to the through hole is formed on the inner steel block 501, so as to facilitate the rotation and installation of the inner adjusting rod 504 on the inner steel block 501, and finally play a passive adjusting role.

[0049] On the inner steel block 501, 60mm from the center of the inner steel block 501 to the upper surface of the inner steel block 501, and close to the outer surface of the inner steel block 501, a mounting groove with a length of 10mm, a width of 50mm and a depth of 50mm is excavated, and then a 50mm diameter internal gear 505 is placed in the excavated mounting groove, and another mounting groove symmetrical to the mounting groove is excavated on the inner steel block 501, and a 50mm diameter internal gear 505 is placed in the mounting groove.

[0050] With the middle of the inner adjusting rod 504 as a boundary, a right-handed helical hole with a depth of 150mm is excavated at the left end of the inner adjusting rod 504, and a left-handed helical hole with a depth of 150mm is excavated at the right end of the inner adjusting rod 504, and then the inner adjusting rod 504 is inserted into a 30mm diameter through hole, and at the same time the inner adjusting rod 504 passes through the internal gear 505, and the inner adjusting rod 504 protrudes 5mm on both sides of the inner steel block 501; then a ring-shaped limiting plate 503 with an inner diameter of 15mm, an outer diameter of 20mm and a thickness of 5mm is sleeved on both ends of the inner adjusting rod 504, and the ring-shaped limiting plate 503 is welded with the end of the inner adjusting rod 504, so that the inner adjusting rod 504 and the internal gear 505 can be just fitted into the inner steel block 501.

[0051] On the inner steel block 501, a horizontal through hole with a diameter of 150mm is excavated at a position 25mm from the front of the inner steel block 501 and at a position equal to the upper and lower sides of the inner steel block 501, which is adapted to the diameter of the transverse support rod 410, facilitating the transverse support rod 410 to pass through the inner steel block 501.

[0052] A mounting groove with a length of 20mm, a width of 170mm and a depth of 75mm is excavated at the geometric center of the outer steel block 502, facilitating the outer gear 506 and the adjusting gear 507 to be placed in the excavated mounting groove.

[0053] On both sides of the outer steel block 502, a rectangular hole with a length of 5mm, a width of 20mm and a depth of 30mm is excavated close to the inner surface of the outer steel block 502 and 45mm from the upper edge of the outer steel block 502, and a through hole passing through the outer steel block 502 is excavated with the rectangular hole as a tangent point, facilitating the outer adjusting rod 509 to pass through; and a rectangular hole and a through hole symmetrical to the rectangular hole and the through hole are excavated on the outer steel block 502.

[0054] In the middle of the two sides of the outer steel block 502, a rectangular hole with a length of 5mm, a width of 20mm and a depth of 50mm is excavated close to the inner surface of the outer steel block 502, and a through hole passing through the outer steel block 502 is excavated with the rectangular hole as a tangent point, facilitating the driven adjusting rod 510 to be placed, playing a regulating role.

[0055] The plane geometric center of the outer surface of the inner steel block 501 is aligned with the plane geometric center of the inner surface of the outer steel block 502, facilitating the subsequent meshing of the inner gear 505 and the outer gear 506, and a longitudinal limiting plate 508 is installed in the rectangular hole on one side of the outer steel block 502, and the longitudinal limiting plate 508 is welded with the inner steel block 501.

[0056] The adjusting gear 507 and the two outer gears 506 are sequentially placed into the installation slots on the outer steel block 502, and the driving adjusting rod 510 with the adjusting part 511 and the two outer adjusting rods 509 are respectively inserted into the through holes on the outer steel block 502, and in the process of installing the driving adjusting rod 510 and the two outer adjusting rods 509, the driving adjusting rod 510 penetrates the adjusting gear 507, and the outer adjusting rod 509 penetrates the outer gear 506; after the driving adjusting rod 510 and the outer adjusting rod 509 are installed, the end of the driving adjusting rod 510 without the adjusting part 511 and the two ends of the outer adjusting rod 509 are respectively clamped into the longitudinal limiting plate 508, and the longitudinal limiting plate 508 is welded with the outer steel block 502, at this time, the adjusting gear 507 is meshed with the two outer gears 506, and the two outer gears 506 are respectively meshed with the two inner gears 505.

[0057] The prestressed efficient control masonry ancient tower hoop reinforcement device reinforcement method comprises the following steps: Step one, the vertical angle steel 2 with the ear plate 401 is respectively attached and installed on each edge of the tower body 1 of the ancient tower at the part needing reinforcement.

[0058] Step two, first, pass the two steel wires 402 through the through holes on the inner steel block 501, and pass the two ends of the steel wires 402 through the two limiting rings 403 arranged oppositely on the two adjacent vertical angle steels 2, and after the two ends of the steel wires 402 pass through the limiting rings 403, extend between the two adjacent vertical angle steels 2, then set the limiting annular ring 407 on the threaded rod 406 on the two ends of the steel wires 402, fold the two ends of the steel wires 402, lock the folded ends of the steel wires 402 on the steel wires 402 by using the steel wire clamp 408, and install the threaded rod 406 on the two ends of the steel wires 402 to fix the horizontal interaction between the steel wires 402 and the threaded rod 406.

[0059] A limiting plate 409 is aligned with the center of one end of the transverse support rod 410, and the limiting plate 409 is welded with one end of the transverse support rod 410, and the limiting plate 409 is provided with a plug-in hole after being welded, the diameter of the plug-in hole and the depth of the plug-in hole are equal to the diameter of the limiting rod 405 and the length of the limiting rod 405, so as to facilitate the insertion of the limiting rod 405 into the transverse support rod 410; then the other end of the transverse support rod 410 which is not welded with the limiting plate 409 is inserted through the through hole on the inner steel block 501, and after the transverse support rod 410 passes through the inner steel block 501, the center of another limiting plate 409 is aligned with the center of the other end of the transverse support rod 410, and the limiting plate 409 is welded with the other end of the transverse support rod 410, and the plug-in hole is provided on the end of the transverse support rod 410 which is welded with the limiting plate 409; then the spring 404 is sleeved on the limiting rod 405 of the ear plate 401, and the two ends of the transverse support rod 410 are respectively inserted into the limiting rod 405 sleeved with the spring 404, and the transverse support rod 410 interacts with the spring 404, so as to achieve the energy dissipation effect when the steel cable 402 is excessively adjusted by the regulator 5 and generates a larger transverse deformation.

[0060] Then, the threaded rods 406 connected at both ends of the steel cable 402 are screwed into the two ends of the inner adjusting rod 504.

[0061] Step three, rotate the adjusting part 511 on the driving adjusting rod 510 in the positive direction, so that the driving adjusting rod 510 rotates, the adjusting gear 507 on the driving adjusting rod 510 rotates synchronously, the adjusting gear 507 drives the outer gear 506, the outer adjusting rod 509 rotates synchronously through the meshing of the adjusting gear 507 and the outer gear 506, the outer gear 506 drives the inner gear 505, the inner adjusting rod 504 rotates synchronously through the meshing of the outer gear 506 and the inner gear 505, and the two threaded rods 406 move towards the middle of the inner adjusting rod 504 through the cooperation of the inner adjusting rod 504 and the threaded rod 406, so that the effective length of the steel cable 402 becomes smaller, and the effective length of the steel cable 402 becomes smaller at the same time, and the two limiting rings 403 are pulled, and the tension of the limiting ring 403 is transmitted to the vertical angle steel 2 through the ear plate 401, so that the two adjacent vertical angle steels 2 are tensioned.

[0062] Steps two and three are repeated again, so that multiple steel cable modules 4 are installed and tensioned together, so that multiple vertical angle steels 2 are tensioned together.

[0063] The reinforcing device provided by the application is provided with an adjuster 5, and can realize synchronous application of pre-tightening force in the same direction; the reinforcing device is close to the structure of the tower body 1 itself, can effectively protect the tower body and the detailed structure, and has flexible design, can be applied to various ancient towers with large size and complex external form, such as hexahedron or octahedron, has great flexibility, clear stress mechanism, reasonable cooperative work between different components, and will not cause secondary damage to the structure of the tower body 1 itself; in addition, the reinforcing device is only arranged on each edge of the ancient tower and the lower part of the eave and the upper part of the base, will not greatly change the original appearance of the ancient tower, conforms to the basic principles of "minimum intervention, identification and reversibility" of cultural relic protection; and the reinforcing device is mainly made of steel, adopts full assembly mode, is convenient to disassemble and assemble, has fast construction speed, strong controllability of technology, and has good engineering application value. The reinforcing device provided by the application improves the constraint on the tower body 1 by applying pre-tightening force to the sleeve hoop, avoids large out-of-plane deformation of the tower body after cracking, causes the tower body to collapse, and improves the overall stability of the structure.

[0064] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the application, and do not limit the scope of the application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and the changes or modifications are still within the scope of the application.

Claims

1. A masonry ancient tower surrounding hoop reinforcing device using prestressed efficient control, characterized in that, The vertical angle steel (2) is arranged on each edge of the tower body (1), and a plurality of cable modules (4) and a plurality of adjusters (5) for adjusting the tension of each cable module (4) are arranged between two adjacent vertical angle steels (2).

2. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control according to claim 1, characterized in that, The inner wall of the vertical angle steel (2) is provided with a rubber pad (3).

3. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control of claim 1, wherein, The cable module (4) comprises a cable (402), and the two ends of the cable (402) extend towards the space between the two adjacent vertical angle steels (2) after penetrating through the two vertical angle steels (2).

4. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control according to claim 3, characterized in that, The adjuster (5) comprises an inner steel block (501) and an outer steel block (502) arranged between the two vertical angle steels (2), and the two ends of the cable (402) are connected with threaded rods (406), and the two sides of the inner steel block (501) are threadedly connected with the threaded rods (406) at the ends of the cable (402); an adjusting mechanism is arranged on the outer steel block (502), and the adjusting mechanism can synchronously exert transverse tension on the two ends of the cable (402) by adjusting the two threaded rods (406); preferably, the cable module (4) further comprises limiting rods (405) arranged on the opposite sides of the two vertical angle steels (2), and two limiting rods (405) corresponding to each other on the two vertical angle steels (2) are jointly provided with a transverse supporting rod (410), and the inner steel block (501) is arranged on the transverse supporting rod (410).

5. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control of claim 4, wherein, The cable module (4) comprises two cables (402), and the two cables (402) are arranged on the upper and lower sides of the transverse supporting rod (410); preferably, the limiting rod (405) is further provided with a spring (404) and a limiting plate (409), the spring (404) abuts against the limiting plate (409) and the vertical angle steel (2), and the end face of the transverse supporting rod (410) is fixed with the limiting plate (409).

6. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control of claim 4, wherein, The cable module (4) further comprises an ear plate (401) arranged on the opposite sides of the two vertical angle steels (2), the limiting rod (405) is fixed on the ear plate (401), and the ear plate (401) is further provided with a limiting ring (403) for the cable (402).

7. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control of claim 3, wherein, The threaded rods (406) at the two ends of the cable (402) have opposite thread directions; the adjusting mechanism further comprises an inner adjusting rod (504) rotatably arranged on the inner steel block (501), the two ends of the inner adjusting rod (504) are engaged with the threaded rods (406) at the two ends of the cable (402); the inner steel block (501) is further provided with a mounting groove, the middle part of the inner adjusting rod (504) is located in the mounting groove, and a driving structure for driving the inner adjusting rod (504) to rotate is arranged in the mounting groove.

8. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control according to claim 7, characterized in that, Two ends of the inner adjusting rod (504) are also provided with annular limiting plates (503), and the two annular limiting plates (503) are matched with two sides of the inner steel block (501); preferably, the outer steel block (502) is provided with a mounting groove covering the inner steel block (501), the driving structure comprises an outer gear (506) and an adjusting gear (507) which are rotatably supported in the outer steel block (502), and the inner adjusting rod (504) is also provided with an inner gear (505), and the outer gear (506) is engaged with the inner gear (505) and the adjusting gear (507) at the same time.

9. The masonry tower enclosure bracing and reinforcing device with prestressed high efficiency control according to claim 8, characterized in that, One end of a driving adjusting rod (510) for mounting the adjusting gear (507) extends outwardly through the outer steel block (502), and the extending end of the driving adjusting rod (510) is also provided with an adjusting part (511); preferably, the outer adjusting rod (509) on the outer gear (506) and one end of the driving adjusting rod (510) are both provided with rotatable longitudinal limiting plates (508), and the longitudinal limiting plates (508) are fixed on the side surface of the inner steel block (501).

10. The reinforcing method of the masonry ancient tower hoop reinforcing device with prestress efficient control according to any one of claims 1 to 9, comprising the following steps: Step one, installing vertical angle steels (2) on each edge of the tower body (1) at the part to be reinforced on the ancient tower; Step two, passing the steel cable (402) through the inner steel block (501) in the adjuster (5), making the two ends of the steel cable (402) pass through adjacent two vertical angle steels (2) and then winding, and connecting the two ends of the steel cable (402) with the adjuster (5) respectively; Step three, adjusting the tension of the steel cable (402) through the adjusting mechanism on the adjuster (5).

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