Expansion soil slope assembled frame beam

Abstract

The present application relates to a kind of assembled frame beams of expansive soil slope, including anchor rod into the base of slope, fixed pipe is located at the upper end of anchor rod and with the upper end of anchor rod form detachable connection, support bracket body is connected with fixed pipe, floating support body is arranged between fixed pipe and support bracket body, the elastic support of fixed pipe along the length direction of anchor rod is implemented by floating support body, assembly beam is spaced apart multiple groups along the circumference of fixed pipe, and the assembly beam between adjacent anchor rods forms detachable connection, can effectively buffer the deformation stress generated by expansive soil due to water absorption expansion or water shrinkage, when expansive soil expands, floating support body is compressed, when expansive soil shrinks, floating support body rebounds, avoid the frame beam cracking, damage due to soil deformation, prolong the service life of structure, it is favorable to form drainage channel between frame beam, reduce the condition that expansive soil is saturated or wet and dry alternately, weaken the expansion and softening phenomenon of soil body.

Description

Technical Field

[0001] This invention relates to the field of expansive soil slope protection technology, specifically a prefabricated frame beam for expansive soil slopes. Background Technology

[0002] In civil engineering construction, the stability of expansive soil slopes has always been a key concern in the engineering community. Expansive soil has significant characteristics of swelling upon absorbing water and shrinking upon losing water. Repeated wet-dry cycles can cause cracks in the soil, significantly reducing its strength, which in turn can lead to a series of destructive phenomena such as slope deformation, sliding, and collapse, seriously threatening the safety of buildings, roads, and people near the slope.

[0003] Currently, frame beams, as a common slope protection structure, are widely used in the treatment of expansive soil slopes. Traditional expansive soil slope frame beams mainly reduce the tendency of the slope soil to slide by dividing the slope surface into several small sections, and connect the frame beams to stable strata through anchor bolts or cables to provide sufficient anchoring force to maintain the overall stability of the slope. However, existing expansive soil slope frame beams still have many problems:

[0004] 1. Due to the repeated expansion and contraction deformation of expansive soil, large local stress will be generated on the frame beam, leading to cracking, damage and other phenomena, thus reducing its protective performance.

[0005] 2. Traditional frame beams have limited drainage performance and cannot effectively remove water accumulation in the slope, causing the expansive soil to be in a state of saturation or alternating wet and dry conditions for a long time, which further aggravates the expansion and softening of the soil and weakens the stability of the slope.

[0006] 3. Existing frame beam structures do not perform well in terms of coordinated deformation with expansive soil, and cannot adapt to the deformation characteristics of expansive soil, which can easily cause voids between the structure and the soil, affecting the overall protection effect.

[0007] Therefore, there is an urgent need to develop a new type of frame beam for expansive soil slopes to solve the problems of poor durability, poor drainage effect, and weak ability to deform in coordination with the soil when dealing with the characteristics of expansive soil, so as to improve the stability of expansive soil slopes and the service life of protective structures. Summary of the Invention

[0008] In view of the shortcomings of the existing technology, a prefabricated frame beam for expansive soil slope is provided, which aims to solve the problems of poor durability, poor drainage effect and weak ability to deform in coordination with the soil when dealing with the characteristics of expansive soil, thereby improving the stability of expansive soil slope and the service life of the protective structure.

[0009] To achieve the above and other related objectives, this invention proposes a prefabricated frame beam for expansive soil slopes, comprising:

[0010] Anchor bolts extend into the base of the slope and are spaced apart along the length and width of the slope;

[0011] A fixed pipe fitting is located at the upper end of the anchor rod and forms a detachable connection with the upper end of the anchor rod;

[0012] The support frame is connected to the fixed pipe and placed in the trench of the slope;

[0013] A floating support body is disposed between the fixed pipe and the support bracket, and provides elastic support for the fixed pipe along the length direction of the anchor rod through the floating support body;

[0014] Multiple sets of assembly beams are provided on the fixed pipe fitting, and the multiple sets of assembly beams are spaced apart along the circumference of the fixed pipe fitting.

[0015] The assembly beams between adjacent anchor bolts form a detachable connection.

[0016] In one embodiment of the present invention, a capillary water collection pipe is provided around the fixed pipe fitting. The capillary water collection pipe extends along the length direction of the assembly beam, and the capillary water collection pipes between adjacent anchor rods are interconnected. One end of the capillary water collection pipe is connected to the inner cavity of the fixed pipe fitting. A guide pipe is provided on the fixed pipe fitting, and the guide pipe is connected to the pump.

[0017] In one embodiment of the present invention, the inner cavity of the fixed pipe is tapered and wider at the top than at the bottom. A locking block is provided at the lower end of the inner cavity of the fixed pipe. The anchor rod passes through the locking block. A locking cap is provided inside the fixed pipe. The upper inner wall of the locking cap is threaded to the upper outer wall of the fixed pipe. When the locking cap rotates along the fixed pipe, the lower end of the locking cap abuts against the locking block.

[0018] In one embodiment of the present invention, the inner wall of the fixed pipe is provided with a clamping cavity, and one end of the capillary water collection pipe is connected to the clamping cavity.

[0019] In one embodiment of the present invention, the fixed pipe fitting is provided with a connecting sleeve cover, the connecting sleeve cover and the fixed pipe fitting are mutually limited and fitted downward along the pipe length direction, and one end of the assembly beam is installed on the mounting position provided on the connecting sleeve cover.

[0020] In one embodiment of the present invention, a tension chain is provided between the locking caps on adjacent fixed pipe fittings, and the two ends of the tension chain are respectively fixed on the locking caps. The fixed pipe fittings rotate and tighten the tension chain.

[0021] In one embodiment of the present invention, each end of the tension chain is provided with a hanging ball, the periphery of the locking cap is provided with a locking interface for locking the hanging ball, the support bracket is provided with a through opening for the tension chain to pass through, and the tension chain extends along the lower part of the support bracket and is located on the lower beam surface of the assembly beam.

[0022] In one embodiment of the present invention, a support arm extends outward in the circumferential direction of the connecting sleeve cover, a support roller is provided on the support arm, the support roller is arranged horizontally, and the beam surface of the assembly beam is placed on the support roller. One end of the assembly beam is provided with an elastic support member, and the other end of the elastic support member abuts against the connecting sleeve cover.

[0023] In one embodiment of the present invention, the support arm is provided with an inclined surface, the inclined surface is arranged close to the support roller, and a sliding inclined surface is provided at one end close to the assembly beam, the sliding inclined surface cooperating with the inclined surface.

[0024] In one embodiment of the present invention, an adjusting support rod is provided on the end face of the assembly beam between adjacent anchor rods, and an adjusting nut is provided in the middle of the adjusting support rod. The adjusting nut rotates to adjust the length of the adjusting support rod. A cylindrical groove is provided on the end face of the assembly beam, and limit posts are provided at both ends of the adjusting support rod, which extend into the cylindrical groove.

[0025] By adopting the above technical solution, the technical effect of the present invention is as follows:

[0026] 1. Anchor bolts extend into the slope base and are spaced apart along the length and width directions, reaching deep into stable strata to provide strong anchoring force, effectively resisting the sliding force of the slope soil and enhancing the overall stability of the slope; the fixed pipe is detachably connected to the upper end of the anchor bolt, ensuring a stable connection between the anchor bolt and the upper structure, while facilitating installation and disassembly; the support frame is placed in the slope trench and connected to the fixed pipe to form a stable support structure, further improving the constraint capacity of the frame beam on the slope soil and preventing soil sliding.

[0027] 2. The floating support is positioned between the fixed pipe and the support frame, providing elastic support to the fixed pipe along the length of the anchor bolt. This effectively buffers the deformation stress caused by the expansion of expansive soil due to water absorption or shrinkage due to water loss. When the expansive soil expands, the floating support compresses to absorb the expansion force; when the expansive soil shrinks, the floating support rebounds, maintaining close contact between the structure and the soil. This prevents cracking and damage to the frame beams due to soil deformation, significantly improving the adaptability of the frame beams to expansive soil deformation and extending the service life of the structure.

[0028] 3. Multiple sets of circumferentially spaced prefabricated beams are located on the fixed pipe fittings, and the prefabricated beams between adjacent anchor rods can be detachably connected. This structural design helps to form drainage channels between the frame beams, promptly remove water accumulated in the slope, reduce the situation of water saturation or alternating wet and dry conditions in expansive soil, and weaken the expansion and softening of the soil. At the same time, the prefabricated beams, fixed pipe fittings, and support brackets together form a protection system, dividing the slope into small blocks, limiting the sliding range of the soil, and further enhancing the slope protection effect. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 and Figure 2 These are schematic diagrams from two perspectives illustrating the assembly of two sets of prefabricated frame beams for expansive soil slopes in one embodiment of the present invention.

[0031] Figure 3 This is a plan view of the assembly of multiple sets of prefabricated frame beams for expansive soil slopes in one embodiment of the present invention;

[0032] Figure 4 This is a front view of the assembly of multiple sets of prefabricated frame beams for expansive soil slopes in one embodiment of the present invention;

[0033] Figure 5 This is a plan view of a prefabricated frame beam for an expansive soil slope according to one embodiment of the present invention;

[0034] Figure 6 and Figure 7 These are schematic diagrams of the prefabricated frame beam for expansive soil slope in one embodiment of the present invention from two different perspectives.

[0035] Figure 8 This is a schematic diagram of the structure of the prefabricated frame beam for an expansive soil slope after the prefabricated beam is removed in one embodiment of the present invention;

[0036] Figure 9 and Figure 10 These are schematic diagrams of the connection between the cap and the locking cap in one embodiment of the present invention from two different perspectives.

[0037] Figure 11 This is a schematic diagram of the structure of the support bracket, fixing pipe and locking cap in one embodiment of the present invention;

[0038] Figure 12 for Figure 11 A schematic diagram of the cross-sectional structure in the middle;

[0039] Figure 13 This is a schematic diagram of the assembly beam in one embodiment of the present invention;

[0040] Figure 14 This is a schematic diagram of the locking cap body in one embodiment of the present invention;

[0041] Figure 15 This is a cross-sectional view of the fixed pipe fitting in this invention. Detailed Implementation

[0042] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0043] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] It should be noted that traditional expansive soil slope frame beams primarily reduce the tendency of the slope soil to slide by dividing the slope into several small sections, and connect the frame beams to stable strata through anchor bolts or cables to provide sufficient anchoring force to maintain the overall stability of the slope. However, existing expansive soil slope frame beams still have many problems. On the one hand, the repeated expansion and contraction deformation of expansive soil will generate large local stresses on the frame beams, leading to cracking and damage, reducing their protective performance. On the other hand, traditional frame beams have limited drainage capacity, making it difficult to effectively remove water accumulation in the slope, causing the expansive soil to be in a state of saturation or alternating wet and dry conditions for a long time, further aggravating soil expansion and softening, and weakening slope stability. In addition, existing frame beam structures do not perform well in terms of coordinated deformation with expansive soil, and cannot adapt to the deformation characteristics of expansive soil, easily causing voids between the structure and the soil, affecting the overall protective effect.

[0045] To address this issue, the present invention proposes a prefabricated frame beam for expansive soil slopes, comprising:

[0046] Anchor bolts 10 extend into the base of the slope and are spaced apart along the length and width of the slope; fixing pipes 20 are located at the upper end of the anchor bolts 10 and are detachably connected to the upper end of the anchor bolts 10.

[0047] The support bracket 30 is connected to the fixed pipe 20 and placed in the trench of the slope;

[0048] A floating support 40 is disposed between the fixed pipe 20 and the support bracket 30, and provides elastic support for the fixed pipe 20 along the length direction of the anchor rod 10 through the floating support 40.

[0049] Multiple sets of assembly beams 50 are provided on the fixed pipe fitting 20, and the multiple sets of assembly beams 50 are spaced apart along the circumference of the fixed pipe fitting 20; the assembly beams 50 between adjacent anchor rods 10 form a detachable connection.

[0050] In one embodiment, see Figures 1 to 4 Four sets of assembly beams 50 are arranged along the circumferential direction of the fixed pipe 20, so that the anchor rods 10 are located in the middle of the assembly beams 50. The anchor rods 10 are used to reliably lock the assembly beams 50 together to form a whole. In actual construction, a trench is first constructed on the slope of the expansive soil, and a hole is formed using a hole-forming machine. Then the anchor rods 10 are inserted, and the support bracket 30 is placed in the trench. The floating support 40 is set between the fixed pipe 20 and the support bracket 30, providing elastic support for the fixed pipe 20 along the length of the anchor rods 10. This can effectively buffer the deformation stress caused by the expansion of the expansive soil due to water absorption or shrinkage due to water loss.

[0051] When the expansive soil expands, the floating support 40 compresses to absorb the expansion force; when the expansive soil contracts, the floating support 40 rebounds to maintain close contact between the structure and the soil, preventing the frame beam from cracking or breaking due to soil deformation, significantly improving the adaptability of the frame beam to expansive soil deformation, and extending the service life of the structure.

[0052] In one embodiment, see Figure 12 The floating support 40 can be made of highly elastic rubber. When the support frame 30 is placed in the trench of the slope, the support frame 30 can be integrated with the slope. The floating support 40 can adapt to the expansion or contraction of the expansive soil slope.

[0053] In one embodiment, the assembly beam 50 is a precast PC component. After prefabrication, it can be hoisted to the slope for installation by a hoisting device. A groove is pre-dug on the slope surface for installing the assembly beam 50, and the assembly beam 50 is inserted into the groove so that the assembly beams 50 on the adjacent anchor rods 10 can be combined into one unit and form a whole with the slope.

[0054] In one embodiment, see Figure 4The fixed pipe fitting 20 is provided with capillary water collection pipes 60 around its periphery. The capillary water collection pipes 60 extend along the length of the assembly beam 50, and the capillary water collection pipes 60 between adjacent anchor rods 10 are interconnected. One end of the capillary water collection pipe 60 is connected to the inner cavity of the fixed pipe fitting 20. The fixed pipe fitting 20 is provided with a guide pipe, which is connected to the pump.

[0055] In one embodiment, the capillary water collection pipe 60 is a common infiltration pipe used in civil engineering. It can reliably collect water from the surface and middle layers of the soil in the slope. The capillary water collection pipe 60 is arranged around the fixed pipe fitting 20 and extends along the length of the assembled beam 50. The capillary water collection pipes 60 between adjacent anchor rods 10 are interconnected, forming a three-dimensional drainage network. Utilizing capillary action, it can quickly absorb and collect water in the slope, especially excess water in expansive soil caused by rainfall and groundwater infiltration. The collected water is collected through the capillary water collection pipe 60, which is connected to the inner cavity of the fixed pipe fitting 20, and then efficiently discharged from the slope through the cooperation of the drainage pipe and the pump. This effectively reduces the water content of the expansive soil, reduces the expansion deformation of the soil caused by water absorption, weakens the repeated expansion and contraction effect of the expansive soil, and fundamentally improves the stability of the slope.

[0056] By combining pumps and drainage pipes, the drainage rate and volume can be flexibly controlled according to actual working conditions, precisely regulating the water level within the slope. This avoids the problem of soil softening and reduced strength caused by localized water accumulation on the slope, maintaining relatively stable mechanical properties of expansive soil, enhancing the cohesion and internal friction angle between soil particles, and reducing the risk of shallow and deep slope sliding. Simultaneously, the stable soil mechanical properties also reduce the deformation pressure on the frame beams, extending their service life.

[0057] The capillary drainage pipe 60 is closely integrated with the fixed pipe fitting 20, the assembled beam 50, and other structures, becoming an integral part of the entire frame beam protection system. During drainage, the capillary drainage pipe 60 provides lateral support to the assembled beam 50, enhancing its overall rigidity. Its connection with the fixed pipe fitting 20 ensures that the drainage system and the anchoring structure of the frame beam 50 work in tandem, preventing voids between the soil and structure caused by drainage. This ensures that the frame beam 50 and the slope soil maintain good contact and coordinated operation, improving the reliability of the entire protection system in handling complex working conditions.

[0058] The dynamic drainage design reduces the destructive effect of the expansive soil's wet-dry cycle on the frame beam 50, lowering the probability of cracking and damage to the frame beam 50, and reducing the frequency of later maintenance and component replacement. Simultaneously, the stable drainage system effectively prevents slope collapses and landslides caused by water accumulation, reducing the costs of disaster repair, significantly improving the project's durability and economy, and achieving long-term stable slope protection.

[0059] In one embodiment, see Figure 12 The inner cavity of the fixed pipe fitting 20 is tapered, wider at the top and narrower at the bottom. A locking block 21 is provided at the lower end of the inner cavity of the fixed pipe fitting 20. The anchor rod 10 passes through the locking block 21. A locking cap 70 is provided inside the fixed pipe fitting 20. The upper inner wall of the locking cap 70 is threadedly connected to the upper outer wall of the fixed pipe fitting 20. When the locking cap 70 rotates along the fixed pipe fitting 20, the lower end of the locking cap 70 abuts against the locking block 21.

[0060] In the above embodiment, the inner cavity of the fixing pipe 20 is tapered, wider at the top and narrower at the bottom. Together with the locking block 21 at the lower end and the locking cap 70, they form a reliable locking mechanism. When the locking cap 70 rotates along the fixing pipe 20 and its lower end abuts against the locking block 21, the anchor rod 10 is firmly fixed inside the fixing pipe 20. This stable connection effectively resists various stresses generated during the expansion and contraction of expansive soil, preventing loosening or displacement between the anchor rod 10 and the fixing pipe 20. This ensures stable and reliable anchoring between the entire frame beam structure and the slope soil, thereby significantly improving the overall stability of the expansive soil slope. The threaded connection of the locking cap 70 simplifies the installation process.

[0061] Construction workers can easily lock and unlock the anchor rod 10 by simply rotating the locking cap 70. Furthermore, if the position or angle of the anchor rod 10 needs fine-tuning during installation, it can also be adjusted by rotating the locking cap 70 appropriately, without the need for complex tools or operations, greatly improving construction efficiency and reducing construction difficulty. Since expansive soil continuously expands and contracts, the frame beam structure must possess a certain degree of adaptability to deformation. The tapered inner cavity design of the fixing fitting 20 and the adjustable locking method allow the anchor rod 10 to undergo slight displacement and angular changes within a certain range as the soil deforms, while still maintaining a good locked state. This adaptive deformation capability effectively buffers the impact of soil deformation on the frame beam structure, reduces structural damage caused by deformation, and extends the service life of the frame beam. It should be noted that the floating support 40 is located between the locking cap 70 and the support bracket 30.

[0062] In one embodiment, see Figure 11 and 14To facilitate the tightening of the locking cap 70, an external hexagonal nut is provided at the upper end of the locking cap 70. After the fixing pipe 20 is fitted onto the anchor rod 10, the locking cap 70 can be rotated using an electric wrench or a hydraulic wrench, thereby tightening the locking cap 70 at the pipe opening of the fixing pipe 20. The lower end of the locking cap 70 abuts against the locking block 21 of the fixing pipe 20, thereby ensuring that the locking block 21 is locked onto the anchor rod 10 in real time, ensuring the reliability of the fixing of the fixing pipe 20 and the anchor rod 10.

[0063] In one embodiment, to reduce corrosion caused by water entering the anchor bolt 10, such as... Figure 15 As shown, the inner wall of the fixed pipe fitting 20 is provided with a clamping cavity, and one end of the capillary water collection pipe 60 is connected to the clamping cavity.

[0064] In one embodiment, the annular space formed by the clamping cavity provides a storage area for water flow, effectively mitigating the intrusion of water into the fixed pipe 20 and reducing corrosion problems caused by water erosion of the anchor rod 10. It also facilitates the collection of water within the fixed pipe 20. A pump can also be used to introduce cleaning water into the clamping cavity to clean the capillary water collection pipe 60, ensuring its water collection function. Furthermore, water can be introduced into the slope to maintain the moisture of the expansive soil, preventing it from becoming too dry or too wet.

[0065] In one embodiment, the fixed pipe fitting 20 is covered with a connecting sleeve cover 80, which is engaged with the fixed pipe fitting 20 in a downward limiting fit along the pipe length direction, and one end of the assembly beam 50 is installed on the mounting position provided on the connecting sleeve cover 80.

[0066] In one embodiment, the locking cap 70 located on the fixed pipe 20 has a stepped tubular structure that is larger at the top and smaller at the bottom. The connecting sleeve cover 80 is similar in shape to the locking cap 70. When the connecting sleeve cover 80 is placed on the locking cap 70, it can limit the position of the connecting sleeve cover 80 and support the connecting sleeve cover 80. The two are fitted together as an upper and lower socket, and once assembled, they will not rotate relative to each other. It can also support one end of the assembly beam 50, which facilitates the rotation of the locking cap 70 to achieve a tight connection between the fixed pipe 20 and the anchor rod 10.

[0067] In one embodiment, a tension chain 90 is provided between the locking caps 70 on adjacent fixed tubes 20, with both ends of the tension chain 90 fixed to the locking caps 70 respectively, and the fixed tube 20 rotates to tighten the tension chain 90.

[0068] In one embodiment, see Figure 6 and Figure 7The tension chain 90 is a steel cable. When installed between adjacent locking caps 70, it can be tightened by rotating the connecting sleeve cover 80 on the fixed pipe 20. Both ends of the tension chain 90 are fixed to the locking caps 70 of the adjacent fixed pipe 20. Rotating the locking caps 70 compresses the locking blocks 21 while simultaneously tightening the tension chain 90, ultimately locking the anchor rods 10 and tightening the chain simultaneously. This tightly connects the dispersed anchor rods 10 to the assembly beam 50, forming a robust mesh connection system for the entire frame beam structure. When the expansive soil slope is subjected to external forces or soil expansion and contraction deformation, the tension chain 90 effectively restricts the relative displacement between the fixed pipes 20, enhances the overall structural integrity, prevents local loosening that could lead to overall protection failure, and significantly improves the slope protection structure's resistance to damage.

[0069] The expansion and contraction deformation of expansive soil is uncertain, and the tension chain 90 has a certain degree of flexible buffering capacity when tightened. When the soil expands and causes compression, the tension chain 90 can release stress through slight elastic deformation; when the soil contracts, the chain can tighten in time to make up for the gap, always maintaining effective constraint on the fixed pipe 20, realizing dynamic adaptation to the deformation of expansive soil, reducing structural damage caused by deformation incoordination, and extending the service life of the frame beam.

[0070] The tightening of the chain 90 can be achieved simply by rotating the locking cap 70, without the need for complicated tools or cumbersome procedures, significantly improving on-site installation efficiency. Construction personnel can quickly adjust the tightness of the chain 90 according to actual working conditions, precisely control the tightness of the frame beam connection, and ensure efficient installation under different slope conditions, reducing construction time and labor costs.

[0071] The tension of the 90° tensioned chain is clearly visible, facilitating daily inspections and maintenance. By observing the chain tension, staff can quickly determine if the frame beam connections are loose, promptly identifying potential safety hazards. Compared to traditional concealed connection structures, this visual monitoring method significantly enhances the safety early warning capabilities of slope protection structures, enabling proactive reinforcement measures and ensuring long-term slope stability.

[0072] The tension chain 90 serves as an additional connecting reinforcement component, adding redundancy to the frame beam structure. Even if some anchor bolts 10, fixed pipe fittings 20, or assembly beams 50 are damaged, the tension chain 90 can still maintain the connection between adjacent components, ensuring the basic stability of the structure, buying time for subsequent maintenance, avoiding overall slope instability caused by local failure, and enhancing the reliability and fault tolerance of the protection system.

[0073] In one embodiment, see Figure 11 and Figure 12The tension chain 90 is provided with hanging balls 91 at both ends, and the locking cap 70 is provided with a locking interface 71 for locking the hanging balls 91 around its periphery. The support bracket 30 is provided with a through opening for the tension chain 90 to pass through. The tension chain 90 extends along the lower part of the support bracket 30 and is located on the lower beam surface of the assembly beam 50.

[0074] In one embodiment, the hanging balls 91 at both ends of the tension chain 90 cooperate with the locking interfaces 71 around the locking cap 70, realizing a quick connection between the tension chain and the locking cap. During construction, this simple snap-fit ​​method requires no complicated tools or operations, greatly shortening the installation time and improving construction efficiency. When tightening the tension chain 90, rotating the locking cap 70 allows the tension chain 90 to wrap around the locking cap 70, thereby tightening the tension chain 90. This results in a tighter connection between the end faces of the assembly beams 50 and a tighter connection between the assembly beams 50 and the connecting sleeve cover 80, making the frame beams on the entire slope a unified whole.

[0075] In one embodiment, a transition wheel is provided on the locking cap 70, and the tension chain 90 is mounted on the transition wheel, which can adjust the deflection direction of the tension chain 90 so that the tension chain 90 extends and retracts along the length of the assembly beam 50.

[0076] In one embodiment, the connecting sleeve cover 80 has a support arm 81 extending in the outer circumferential direction, and a support roller 82 is provided on the support arm 81. The support roller 82 is arranged horizontally, and the beam surface of the assembly beam 50 is placed on the support roller 82. One end of the assembly beam 50 is provided with an elastic support member 83, and the other end of the elastic support member 83 abuts against the connecting sleeve cover 80.

[0077] In one embodiment, four sets of support arms 81 are arranged along the circumferential direction of the connecting sleeve cover 80, and the support arms 81 extend along the radial direction of the connecting sleeve cover 80. The support arms 81 are provided with slots (rectangular slots) to enable the engagement of the assembly beam 50.

[0078] In one embodiment, see Figure 9 and Figure 10The support rollers 82 on the support arm 81 are arranged horizontally, and the surface of the assembly beam 50 is placed directly on the support rollers 82, converting the sliding friction between the assembly beam 50 and the support structure into rolling friction. When the frame beam is deformed due to soil expansion and contraction or external forces on the expansive soil slope, the support rollers 82 can roll freely. An elastic support member 83 is set at one end of the assembly beam 50, and the other end of the elastic support member 83 abuts against the connecting sleeve cover 80, forming an elastic buffer structure. When the expansive soil undergoes expansion and contraction deformation, the elastic support member 83 can absorb and release the stress generated by the soil deformation through its own compression or rebound, enabling the assembly beam 50 to deform in tandem with the soil, avoiding hard collisions or detachment between the assembly beam 50 and other components due to soil deformation, and effectively improving the adaptability and stability of the frame beam structure under complex working conditions.

[0079] In one embodiment, the support arm 81 is provided with an inclined surface 811, which is arranged near the support roller 82. A sliding inclined surface 51 is provided at one end near the assembly beam 50, and the sliding inclined surface 51 engages with the inclined surface 811. The inclined surface 811 on the support arm 81 and the sliding inclined surface 51 of the assembly beam 50 engage to form a guiding structure. During installation, the assembly beam 50 can slide quickly and accurately into the support roller 82 along the guide of the inclined surface 811, eliminating the need for complex alignment operations, significantly reducing installation difficulty and shortening construction time. Simultaneously, the guiding effect of the inclined surface 811 effectively prevents the assembly beam 50 from shifting or misaligning during installation, ensuring accurate installation of each component and improving the overall assembly quality.

[0080] In one embodiment, an adjusting support rod 52 is provided on the end face of the assembly beam 50 between adjacent anchor rods 10. An adjusting nut 521 is provided in the middle of the adjusting support rod 52. The adjusting nut 521 rotates to adjust the length of the adjusting support rod 52. A cylindrical groove 53 (internal thread groove) is provided on the end face of the assembly beam 50. Limiting pins 522 (external thread heads) are provided at both ends of the adjusting support rod 52 and extend into the cylindrical groove 53.

[0081] In the above embodiments, the length of the adjusting strut 52 can be precisely adjusted by rotating the adjusting nut 521, allowing for flexible changes in the support distance between adjacent assembled beams 50 according to different slope conditions and the actual needs of anchor spacing. This adjustable feature enables the frame beam structure to better adapt to complex and varied expansive soil slope terrain, improves the versatility and adaptability of structural installation, and reduces structural stress problems caused by mismatched spacing.

[0082] The limiting posts at both ends of the adjusting strut 52 extend into the cylindrical slots 53 on the end face of the assembled beam 50, forming a stable connection structure. When the expansive soil slope is subjected to soil expansion and contraction, external impact, etc., the adjusting strut 52 can effectively limit the relative displacement of adjacent assembled beams 50, tightly connecting each assembled beam into a whole, enhancing the integrity and deformation resistance of the frame beam structure, preventing overall structural instability caused by local loosening, and improving the reliability of the slope protection system.

[0083] The adjusting struts 52 are evenly distributed between adjacent assembled beams 50, which can disperse and transfer the load generated by the slope soil to each assembled beam, avoiding local stress concentration. By fine-tuning the length of the struts 52, the stress state of the entire frame beam structure can be further optimized, so that the stress is more evenly distributed on components such as anchor rods 10 and fixed pipe fittings 20, reducing the risk of damage to the structure due to uneven stress and extending the service life of the frame beam.

[0084] The above description is merely a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by replacing the above-mentioned features with technical features with similar functions disclosed in this application (but not limited to) each other.

[0085] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this invention, the other technical features will not be described in detail here.

Claims

1. A prefabricated frame beam for expansive soil slopes, characterized in that, include: Anchor bolts (10) extend into the base of the slope and are spaced apart along the length and width of the slope; The fixing fitting (20) is located at the upper end of the anchor rod (10) and forms a detachable connection with the upper end of the anchor rod (10); The support bracket (30) is connected to the fixed pipe (20) and placed in the trench of the slope; A floating support (40) is disposed between the fixed pipe (20) and the support bracket (30), and the floating support (40) provides elastic support to the fixed pipe (20) along the length direction of the anchor rod (10); Multiple sets of assembly beams (50) are provided on the fixed pipe fitting (20), and the multiple sets of assembly beams (50) are spaced apart along the circumference of the fixed pipe fitting (20); The assembly beams (50) between adjacent anchor bolts (10) form a detachable connection; The fixed pipe fitting (20) is provided with capillary water collection pipes (60) around its periphery. The capillary water collection pipes (60) extend along the length direction of the assembly beam (50), and the capillary water collection pipes (60) between adjacent anchor rods (10) are interconnected. One end of the capillary water collection pipe (60) is connected to the inner cavity of the fixed pipe fitting (20). The fixed pipe fitting (20) is provided with a guide pipe, which is connected to the pump. The inner cavity of the fixed pipe fitting (20) is tapered, wider at the top and narrower at the bottom. A locking block (21) is provided at the lower end of the inner cavity of the fixed pipe fitting (20). The anchor rod (10) passes through the locking block (21). A locking cap (70) is provided inside the fixed pipe fitting (20). The upper inner wall of the locking cap (70) is threadedly connected to the upper outer wall of the fixed pipe fitting (20). When the locking cap (70) rotates along the fixed pipe fitting (20), the lower end of the locking cap (70) abuts against the locking block (21). The fixed pipe fitting (20) is covered with a connecting sleeve cover (80). The connecting sleeve cover (80) and the fixed pipe fitting (20) are matched downwardly along the pipe length direction. One end of the assembly beam (50) is installed on the mounting position provided on the connecting sleeve cover (80). A tension chain (90) is provided between the locking caps (70) on adjacent fixed pipe fittings (20), and the two ends of the tension chain (90) are respectively fixed on the locking caps (70). The fixed pipe fittings (20) rotate and tighten the tension chain (90). The tension chain (90) is provided with hanging balls (91) at both ends, and the locking cap (70) is provided with a locking interface (71) for locking the hanging balls (91) around its periphery. The support bracket (30) is provided with a through opening for the tension chain (90) to pass through. The tension chain (90) extends along the lower part of the support bracket (30) and is located on the lower beam surface of the assembly beam (50). The connecting sleeve cover (80) has a support arm (81) extending in the outer circumferential direction. A support roller (82) is provided on the support arm (81). The support roller (82) is arranged horizontally, and the beam surface of the assembly beam (50) is placed on the support roller (82). One end of the assembly beam (50) is provided with an elastic support member (83), and the other end of the elastic support member (83) abuts against the connecting sleeve cover (80).

2. The prefabricated frame beam for expansive soil slopes according to claim 1, characterized in that: The inner wall of the fixed pipe (20) is provided with a clamping cavity, and one end of the capillary water collection pipe (60) is connected to the clamping cavity.

3. The prefabricated frame beam for expansive soil slopes according to claim 1, characterized in that: The support arm (81) is provided with an inclined surface (811), which is arranged close to the support roller (82). A sliding inclined surface (51) is provided at one end close to the assembly beam (50), and the sliding inclined surface (51) cooperates with the inclined surface (811).

4. The prefabricated frame beam for expansive soil slopes according to claim 3, characterized in that: An adjusting support rod (52) is provided on the end face of the assembly beam (50) between adjacent anchor rods (10). An adjusting nut (521) is provided in the middle of the adjusting support rod (52). The adjusting nut (521) rotates and adjusts the length of the adjusting support rod (52). A cylindrical slot (53) is provided on the end face of the assembly beam (50). Limiting posts (522) are provided at both ends of the adjusting support rod (52) and extend into the cylindrical slot (53).

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