Multidirectional composite shock insulation support for building structure

Abstract

The invention relates to the technical field of building structures, in particular to a multidirectional composite shock insulation support for a building structure, which comprises an embedded part, and a shock insulation support is arranged in the middle of the embedded part. By arranging the embedded part and the shock insulation support, an efficient and stable shock insulation support mounting mode is realized; the stability and reliability of the shock insulation support in a building structure are greatly improved through ingenious cooperation of the embedded part and the shock insulation support and cooperative action of all the assemblies, various shocks and displacements possibly encountered in the using process of a building can be effectively resisted through the unique installation mode, the durability of the shock insulation effect is ensured, and the service life of the building is prolonged. In practical application, the multidirectional composite seismic isolation support can remarkably reduce the influence of natural disasters such as earthquakes on a building structure, the multidirectional composite characteristic of the multidirectional composite seismic isolation support enables the multidirectional composite seismic isolation support to effectively isolate and buffer vibration in different directions, vibration energy transmitted to a building body is reduced, and therefore the integrity and safety of the building structure are protected.

Description

Technical Field

[0001] This invention relates to the field of building structure technology, and more specifically, to a multidirectional composite seismic isolation bearing for building structures. Background Technology

[0002] Building structure refers to the system composed of various connected components in a building project, capable of withstanding various loads. It is the skeleton of a building, providing necessary stability and safety. There are many types of building structures, commonly including frame structures, shear wall structures, frame-shear wall structures, and tube structures. Frame structures use beams and columns to form a frame to bear loads, offering flexible spatial partitioning and are suitable for office buildings, shopping malls, etc. Shear wall structures primarily rely on reinforced concrete walls to bear horizontal and vertical loads, exhibiting high lateral stiffness and often used in high-rise residential buildings. Frame-shear wall structures... Shear wall structures combine the advantages of frame structures and shear wall structures, ensuring both spatial flexibility and good seismic performance. Tube structures are suitable for high-rise buildings and can effectively resist horizontal loads. Different building structure types are suitable for different building needs and site conditions. In actual engineering, it is necessary to make a reasonable selection based on specific circumstances. For building structures, seismic isolation is a very important aspect. Reasonable seismic isolation design can effectively reduce the impact of disasters such as earthquakes on buildings and ensure the safety of people and property inside the building. The multi-directional composite seismic isolation bearing of this invention is an innovative product developed to meet the seismic isolation needs of building structures.

[0003] According to patent document CN114808673A, a circumferential elastic seismic isolation bearing is disclosed, comprising an upper bearing plate, a spherical crown, a basin ring, a base plate, a limiting component, and several elastic components. The spherical crown is disposed between the upper bearing plate and the basin ring, the basin ring is disposed on the base plate, and a planar friction pair is disposed between the basin ring and the base plate. A limiting component is fixed on the base plate, surrounding the basin ring, and several elastic components that can extend and retract radially are disposed at intervals along the circumferential direction between the limiting component and the basin ring. This invention achieves circumferential elastic constraint and support functions by arranging several elastic components at intervals along the circumferential direction around the bearing, enabling the bearing to have seismic isolation effects in all directions. The elastic components have graded variable stiffness, realizing a two-level seismic fortification concept and improving the seismic performance of the structure. This circumferential elastic seismic isolation bearing can be used in bridge or building structures, overcoming the shortcomings of traditional longitudinal and transverse seismic isolation devices and improving the seismic performance of the structure in all directions.

[0004] Seismic isolation bearings can significantly reduce the damage caused by earthquakes to building structures. Their core mechanism is to effectively mitigate the impact of earthquakes on buildings by extending the natural period of the structure and increasing the damping characteristics of the system. However, after the overall building structure is completed, if a vibration occurs, traditional seismic isolation bearings may experience some offset or displacement. This offset may change the mechanical properties of the bearings, thus affecting their seismic isolation effect. Because the structure of traditional seismic isolation bearings is relatively fixed, they are not very adaptable to complex seismic vibration modes and cannot be flexibly adjusted according to the actual vibration situation. Moreover, when a large-magnitude earthquake occurs, the damping provided by traditional seismic isolation bearings may not be sufficient to completely dissipate the seismic energy, causing some energy to still be transmitted to the building structure, posing a threat to the building's safety. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, this invention provides a multidirectional composite seismic isolation bearing for building structures. The technical problem this invention aims to solve is that traditional seismic isolation bearings may experience certain offsets or displacements after being subjected to vibrations. Such offsets may alter the mechanical properties of the bearings, thereby affecting their seismic isolation effect. Due to the relatively fixed structure of traditional seismic isolation bearings, their adaptability is poor when facing complex seismic vibration modes, and they cannot be flexibly adjusted according to the actual vibration conditions. Moreover, when a large-magnitude earthquake occurs, the damping provided by traditional seismic isolation bearings may not be sufficient to completely dissipate the seismic energy, causing some energy to still be transmitted to the building structure, posing a threat to the building's safety.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A multi-directional composite seismic isolation bearing for building structures includes an embedded part, wherein the seismic isolation bearing is provided in the middle of the embedded part; The embedded part includes an embedded part base, and a multi-directional composite positioning component is provided on the top of the embedded part base; The embedded part base includes a support mounting groove, and a center block is fixedly connected to both the front and rear sides of the support mounting groove.

[0007] As a further embodiment of the present invention: horizontal plates are fixedly connected to the left and right sides of the two central connecting blocks, and supporting upright plates are fixedly connected to the outer sides of the two sets of horizontal plates. Guide rod connecting blocks are fixedly connected to the top and bottom of the outer sides of the front and rear sets of horizontal plates. C-shaped frames are fixedly connected to the inner sides of the multiple sets of guide rod connecting blocks. A pull rod connecting block is fixedly connected to the middle of the bottom of the outer side of the rear central connecting block, and a double-wire electric pull rod is fixedly connected to the inner wall of the pull rod connecting block.

[0008] As a further aspect of the present invention: guide rods are fixedly connected to one side of the multiple sets of guide rod connecting blocks that are close to each other, and blocking block connecting blocks are fixedly connected to multiple sides of the outer sides of the two sets of guide rods on the front side and the two sets of guide rods on the rear side.

[0009] As a further aspect of the present invention: a blocking block is rotatably connected to the outer side of each of the multiple sets of blocking block connecting blocks, a spring is fixedly connected to one side of each of the multiple sets of blocking blocks, and the end of each of the multiple sets of springs away from the blocking block is fixedly connected to the top of the multiple sets of blocking block connecting blocks.

[0010] As a further aspect of the present invention: the multi-directional composite positioning component includes two clamping positioning components, and the top and bottom of the inner sides of the two clamping positioning components are fixedly connected with expansion and contraction components.

[0011] As a further embodiment of the present invention: the clamping and positioning assembly includes two expansion plates, the inner sides of the two expansion plates are slidably connected to the inner sides of the left and right sets of horizontal plates, the top of the two expansion plates is fixedly connected to an L-shaped clamping plate, and the top and bottom of the inner sides of the two L-shaped clamping plates are fixedly connected to a fixing crossbar.

[0012] As a further embodiment of the present invention: the inner sides of the two sets of fixed crossbars are aligned with the left and right sides of the seismic isolation bearing, and fixed side blocks are fixedly connected to the front and rear sides of the two sets of fixed crossbars.

[0013] As a further embodiment of the present invention: both of the retractable and expanding components include inverted concave retractable and expanding side plates, the top and bottom of the outer sides of the left and right sets of inverted concave retractable and expanding side plates are fixedly connected to the top and bottom of the inner sides of the two retractable and expanding plates, hinge blocks are fixedly connected to the front and rear sides of the inner sides of the left and right sets of inverted concave retractable and expanding side plates, and sliding blocks are fixedly connected to the side of the inner sides of the left and right sets of inverted concave retractable and expanding side plates away from the hinge blocks.

[0014] As a further embodiment of the present invention: the outer walls of the two sets of sliding blocks on the left and the two sets of sliding blocks on the right are all slidably connected to the inner sides of the two sets of guide rods on the left and the two sets of guide rods on the right.

[0015] As a further embodiment of the present invention: the inner sides of the two sets of hinge blocks on the front side and the two sets of hinge blocks on the right side are rotatably connected to rotating rods; the two sets of rotating rods on the front side and the two sets of rotating rods on the rear side are rotatably connected to push-pull plates on the side away from the hinge blocks; the outer sides of the two sets of push-pull plates on the front and rear sides are fixedly connected to triangular mud-surface insert plates; and the rear sides of the inner sides of the two bottom inverted concave expansion side plates are fixedly connected to the left and right ends of the double-line electric pull rod.

[0016] The beneficial effects of this invention are as follows: This invention achieves a highly efficient and stable installation method for seismic isolation bearings by incorporating pre-embedded components and seismic isolation bearings. Through the ingenious cooperation between the pre-embedded components and the seismic isolation bearings, as well as the coordinated action of each component, the stability and reliability of the seismic isolation bearings in the building structure are greatly improved. This unique installation method can effectively resist various vibrations and displacements that the building may encounter during use, ensuring the durability of the seismic isolation effect. In practical applications, this multi-directional composite seismic isolation bearing can significantly reduce the impact of natural disasters such as earthquakes on building structures. Its multi-directional composite characteristics allow it to effectively isolate and buffer vibrations in different directions. This invention reduces the transmission of vibration energy to the main building, thereby protecting the integrity and safety of the building structure. Furthermore, the design of this invention considers ease of installation and maintenance; the connection methods between the components are simple and clear, facilitating operation and adjustment by construction personnel. In subsequent maintenance, the seismic isolation bearings can be quickly inspected and repaired, reducing maintenance costs and time. In addition, this seismic isolation bearing has a wide range of applications and can be used in various types of building structures, whether residential, commercial, or industrial, to improve the seismic performance of buildings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of the present invention; Figure 3 This is a three-dimensional structural diagram of the embedded part of the present invention; Figure 4 This is a schematic diagram of the three-dimensional separation structure of the embedded parts of the present invention; Figure 5 This is a schematic diagram of the three-dimensional separation structure of the embedded part base of the present invention; Figure 6 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 7 This is a three-dimensional structural diagram of the multi-directional composite positioning component of the present invention; Figure 8 This is a schematic diagram of the three-dimensional separation structure of the multi-directional composite positioning component of the present invention; Figure 9 This is a three-dimensional structural diagram of the clamping and positioning component of the present invention; Figure 10 This is a three-dimensional structural diagram of the expansion and contraction component of the present invention.

[0018] In the diagram: 1. Embedded part; 11. Embedded part base; 111. Support mounting groove; 112. Center connecting block; 113. Horizontal plate; 114. Guide rod connecting block; 115. Guide rod; 116. Block connecting block; 117. Block; 118. Spring; 119. Support upright plate; 1110. C-shaped frame; 1111. Double-line electric pull rod; 1112. Pull rod connecting block; 12. Multi-directional Composite positioning assembly; 121, clamping positioning assembly; 1211, expansion plate; 1212, L-shaped clamping plate; 1213, fixed crossbar; 1214, fixed side block; 122, expansion assembly; 1221, inverted concave expansion side plate; 1222, sliding block; 1223, hinge block; 1224, rotating rod; 1225, push-pull plate; 1226, triangular mud-surface insert plate; 2, seismic isolation bearing. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, the present invention provides a multi-directional composite seismic isolation bearing for building structures, including an embedded part 1, wherein a seismic isolation bearing 2 is provided in the middle of the embedded part 1.

[0021] like Figures 2-10As shown, the embedded part 1 includes an embedded part base 11. A multi-directional composite positioning component 12 is provided on the top of the embedded part base 11. The embedded part base 11 includes a support mounting groove 111. Center blocks 112 are fixedly connected to both the front and rear sides of the support mounting groove 111. Horizontal plates 113 are fixedly connected to both the left and right sides of the two central connecting blocks 112. Support plates 119 are fixedly connected to the outer sides of the two sets of horizontal plates 113. Guide rod connecting blocks 114 are fixedly connected to the top and bottom of the outer sides of the two sets of horizontal plates 113. C-shaped frames 1110 are fixedly connected to the inner sides of the multiple sets of guide rod connecting blocks 114. A tie rod connecting block 1112 is fixedly connected to the middle of the bottom of the outer side of the rear center connecting block 112. The inner wall of the tie rod connecting block 1112 is fixed... The system is connected to a double-wire electric pull rod 1111. Multiple sets of guide rod connecting blocks 114 are each fixedly connected to a guide rod 115 on one side of each other. Multiple sides of the outer sides of the two front and two rear sets of guide rods 115 are fixedly connected to blocking block connecting blocks 116. Blocking blocks 117 are rotatably connected to the outer sides of the multiple sets of blocking block connecting blocks 116. A spring 118 is fixedly connected to one side of each set of blocking blocks 117. The ends of the multiple springs 118 away from the blocking blocks 117 are fixedly connected to the top of the multiple sets of blocking block connecting blocks 116. The multi-directional composite positioning assembly 12 includes two clamping positioning assemblies 121. The top and bottom of the inner sides of the two clamping positioning assemblies 121 are fixedly connected to a retracting assembly 122. The clamping positioning assembly 121 includes... Two expansion plates 1211 are slidably connected to the inner sides of two sets of horizontal plates 113. L-shaped clamping plates 1212 are fixedly connected to the top of each expansion plate 1211. Fixed crossbars 1213 are fixedly connected to the top and bottom of the inner sides of the two L-shaped clamping plates 1212. The inner sides of the two sets of fixed crossbars 1213 are aligned with the left and right sides of the seismic isolation bearing 2. Fixed side blocks 1214 are fixedly connected to the front and rear sides of the two sets of fixed crossbars 1213. Two expansion assemblies 122 each include inverted concave expansion side plates 1221. The top and bottom of the outer sides of the two sets of inverted concave expansion side plates 1221 are fixedly connected to the top and bottom of the inner sides of the two expansion plates 1211. Hinges 1223 are fixedly connected to both the front and rear sides of the inner side of the concave-convex side plate 1221. Sliding blocks 1222 are fixedly connected to the inner side of the left and right sets of concave-convex side plates 1221 away from the hinge blocks 1223. The outer walls of the two sets of sliding blocks 1222 on the left and the two sets of sliding blocks 1222 on the right are slidably connected to the inner side of the two sets of guide rods 115 on the left and the right. Rotating rods 1224 are rotatably connected to the inner side of the two sets of hinge blocks 1223 on the front and the two sets of hinge blocks 1223 on the right. Push-pull plates 1225 are rotatably connected to the outer side of the two sets of rotating rods 1224 on the front and the two sets of rotating rods 1224 away from the hinge blocks 1223. Triangular mud-surface inserts 1226 are fixedly connected to the outer side of the two sets of push-pull plates 1225 on the front and the rear.The rear sides of the inner sides of the two inverted concave side plates 1221 at the bottom are fixedly connected to the left and right ends of the double-wire electric pull rod 1111; When installing the seismic isolation bearing 2, firstly, according to the design drawings, a foundation pit of appropriate size should be excavated at the designated installation location. Then, the embedded part 1 is placed inside the foundation pit as a whole, and the four support plates 119 at the bottom of the foundation pit are firmly fixed to the ground of the foundation pit through fixing measures. Next, the seismic isolation bearing 2 is vertically inserted into the bearing installation groove 111 above the embedded part 1. At this time, the double-line electric pull rod 1111 is activated. After the pull rod is powered on, the telescopic parts at both ends of the rod will retract inward at the same time. This retraction action will directly pull the two bottom concave expansion and contraction side plates 1221 connected to it, so that they move inward synchronously. When the two concave expansion side plates 1221 at the bottom move inward, since they are fixedly connected to the expansion plate 1211 above, they will drive the expansion plate 1211 to slide smoothly inward along the horizontal plate 113 embedded in the embedded part 1. As the expansion plate 1211 continues to slide inward, the L-shaped clamping plate 1212 fixedly installed on its top will also gradually approach the column of the seismic isolation bearing 2. When the L-shaped clamping plate 1212 approaches the seismic isolation bearing 2, the fixed horizontal bar 1213 installed on the clamping plate and the fixed side block 1214 on the side will gradually fit completely with the side of the seismic isolation bearing 2, thereby achieving preliminary accurate positioning and effective clamping of the seismic isolation bearing 2, ensuring that it is in the correct vertical position. Meanwhile, the inward movement of the concave expansion side plate 1221 will also drive the sliding block 1222 connected to it to slide along the guide rod 115 set on the embedded part 1. This guide structure ensures the stability and directional accuracy of the entire expansion and clamping movement process. In addition, the rotating rod 1224 connected to the inner side of the concave expansion side plate 1221 by a hinge will rotate with the movement of the side plate. The rotation of the rotating rod 1224 will push the push-pull plate 1225 connected to it to move outward in the direction of the embedded part 1. When the push-pull plate 1225 moves outward, the sharp triangular mud surface insert plate 1226 fixed at its outer end will be forcefully inserted into the soil surface around the foundation pit. Through this design, the triangular mud surface insert plate 1226 can penetrate into the soil like an anchor, thereby greatly enhancing the overall connection stability between the embedded part 1 and the foundation pit soil, and effectively preventing any unnecessary displacement or loosening of the embedded part 1 due to vibration or load changes during the long-term use of the seismic isolation bearing 2. Throughout the process of the expansion and retraction assembly 122 continuously driving the clamping and positioning assembly 121 to retract inward, when the expansion and retraction plate 1211 slides to a certain position, it will contact and compress the blocking block 117 embedded in the horizontal plate 113. When the blocking block 117 is compressed, it will rotate at a certain angle around the blocking block connecting block 116 at its bottom, and at the same time compress the spring 118 installed on the other side of the connecting block. After the spring 118 is compressed, it will store and generate a reverse elastic restoring force. When the double-wire electric pull rod 1111 stops moving and the entire clamping system reaches a stable state, the elastic force stored in the spring 118 will be released, causing the blocking block 117 to partially return to its original position. This design plays an important role in limiting and buffering the final position of the expansion and retraction plate 1211. It can not only prevent the expansion and retraction plate 1211 from damaging the seismic isolation support 2 or the embedded part 1 due to excessive movement, but also provide a certain buffer when the building structure vibrates, preventing unnecessary vibration of the clamping components. The displacement ensures the final stability and long-term reliability of the seismic isolation bearing 2 installation on multiple levels. Finally, after the seismic isolation bearing 2 is installed and rigorously inspected to confirm that its installation position is completely accurate and all connecting parts are firm and reliable, the subsequent construction operations of the superstructure can be carried out. In this way, the multi-directional composite seismic isolation bearing can be correctly and firmly integrated into the building structure, and play its intended and effective seismic isolation and damping role in possible future earthquakes and other disasters. This design of the multi-directional composite seismic isolation bearing not only ensures the accurate positioning and stable connection of the seismic isolation bearing during installation, but also has good performance in subsequent use. When the building is subjected to earthquakes and other vibrations, the seismic isolation bearing 2 can effectively disperse and absorb vibration energy with its unique structural characteristics. The elastic material inside the seismic isolation bearing 2 will deform under the action of vibration, converting vibration energy into elastic potential energy, thereby reducing the impact of earthquakes on the building structure. Meanwhile, the stable connection structure formed during the previous installation process can also play a further role. The L-shaped clamping plate 1212 effectively clamps the seismic isolation bearing 2, and the triangular mud surface insert plate 1226 provides a stable connection between the embedded part 1 and the foundation pit soil, which can prevent the seismic isolation bearing 2 from shifting or loosening during vibration, and ensure that the seismic isolation bearing 2 is always in the correct working position. Moreover, the limiting and buffering structure composed of the blocking block 117 and the spring 118 can also play an important role during vibration. When the impact force generated by the vibration causes the expansion plate 1211 to tend to move outward, the spring 118 will once again exert its elastic restoring force to buffer and limit the movement of the expansion plate 1211, so as to avoid damage to the connection between the seismic isolation support 2 and the embedded part 1 due to excessive vibration. In addition, the multi-directional composite seismic isolation bearing also has a certain self-recovery capability. After the vibration ends, the elastic material inside the seismic isolation bearing 2 will gradually return to its original shape, and the spring 118 will also cause the blocking block 117 to further return to its original position, so that the entire seismic isolation system returns to a stable state and prepares for the next possible vibration.

[0022] Working principle of the invention: When installing the seismic isolation bearing 2, firstly, a foundation pit is excavated at the designated installation location of the seismic isolation bearing 2. Then, the embedded part 1 is placed in the foundation pit and its four supporting uprights 119 are fixed to the foundation pit ground. The seismic isolation bearing 2 is inserted into the bearing installation groove 111. Then, the double-wire electric pull rod 1111 is started. After the double-wire electric pull rod 1111 is started, its left and right ends begin to retract inward, thereby pulling the two bottom inverted concave expansion side plates 1221 to move inward. When the bottom two inverted concave expansion side plates 1221 move inward, since they are fixedly connected to the expansion plate 1211, they will drive the expansion plate 1211 along the horizontal plate 11. 3. Sliding inwards, as the expansion plate 1211 slides, the L-shaped clamping plate 1212 fixed on its top will also move closer to the seismic isolation bearing 2. When the L-shaped clamping plate 1212 approaches the seismic isolation bearing 2, the fixed crossbar 1213 and the fixed side block 1214 will gradually fit against the side of the seismic isolation bearing 2, thereby initially positioning and clamping the seismic isolation bearing 2. At the same time, the movement of the concave expansion side plate 1221 will also drive the sliding block 1222 to slide on the guide rod 115, ensuring the stability and accuracy of the entire movement process. The rotating rod 1224, hinged to the inner side of the concave expansion side plate 1221, will move along with the concave expansion side plate 1211. The rotation of the rotating rod 1224, caused by the movement of the 21, pushes the push-pull plate 1225 outward, thereby causing the triangular mud-surface insert 1226 fixed on the outside of the push-pull plate 1225 to insert into the mud surface of the foundation pit. This further enhances the connection stability between the embedded part 1 and the foundation pit, preventing displacement of the embedded part 1 during the use of the seismic isolation bearing 2. As the expansion assembly 122 drives the clamping and positioning assembly 121 to continuously retract inward, the blocking block 117 is compressed. When the blocking block 117 is compressed, it rotates around the blocking block connecting block 116, simultaneously compressing the spring 118. When the spring 118 is compressed, it will generate a reverse elastic force. When the double-wire electric pull rod 1111 stops moving and the structure is stable, the elastic force of the spring 118 will cause the blocking block 117 to return to a certain position, which will play a certain limiting and buffering role on the expansion plate 1211, preventing the expansion plate 1211 from moving excessively or causing unnecessary displacement under vibration, thereby ensuring the stability and reliability of the installation of the seismic isolation bearing 2. After the seismic isolation bearing 2 is installed and the installation position is confirmed to be accurate and the connection of each component is stable, subsequent building construction operations can be carried out, so that the multi-directional composite seismic isolation bearing can play its due seismic isolation role in the building structure.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A multi-directional composite seismic isolation bearing for building structures, comprising an embedded part (1), characterized in that: The embedded part (1) is provided with a seismic isolation support (2) in the middle. The embedded part (1) includes an embedded part base (11), and a multi-directional composite positioning component (12) is provided on the top of the embedded part base (11). The embedded base (11) includes a support mounting groove (111), and a center block (112) is fixedly connected to both the front and rear sides of the support mounting groove (111).

2. A multi-directional composite seismic isolation bearing for building structures according to claim 1, characterized in that: A horizontal plate (113) is fixedly connected to both the left and right sides of the two central connecting blocks (112). A supporting upright plate (119) is fixedly connected to the outer side of the two sets of horizontal plates (113). A guide rod connecting block (114) is fixedly connected to the top and bottom of the outer side of the two sets of horizontal plates (113). A C-shaped frame (1110) is fixedly connected to the inner side of the multiple sets of guide rod connecting blocks (114). A pull rod connecting block (1112) is fixedly connected to the middle of the bottom of the outer side of the rear central connecting block (112). A double-wire electric pull rod (1111) is fixedly connected to the inner wall of the pull rod connecting block (1112).

3. A multi-directional composite seismic isolation bearing for building structures according to claim 2, characterized in that: Each of the multiple sets of guide rod connecting blocks (114) is fixedly connected to a guide rod (115) on one side close to each other, and multiple sides of the outer sides of the two sets of guide rods (115) on the front and the two sets of guide rods (115) on the rear are fixedly connected to a blocking block connecting block (116).

4. A multi-directional composite seismic isolation bearing for building structures according to claim 3, characterized in that: A blocking block (117) is rotatably connected to the outer side of each of the multiple sets of blocking block connecting blocks (116), and a spring (118) is fixedly connected to one side of each of the multiple sets of blocking blocks (117). The end of each of the multiple sets of springs (118) away from the blocking block (117) is fixedly connected to the top of the multiple sets of blocking block connecting blocks (116).

5. A multi-directional composite seismic isolation bearing for building structures according to claim 1, characterized in that: The multi-directional composite positioning component (12) includes two clamping positioning components (121), and the top and bottom of the inner sides of the two clamping positioning components (121) are fixedly connected with expansion and contraction components (122).

6. A multi-directional composite seismic isolation bearing for building structures according to claim 5, characterized in that: The clamping and positioning assembly (121) includes two expansion plates (1211). The inner sides of the two expansion plates (1211) are slidably connected to the inner sides of the left and right sets of horizontal plates (113). The top of the two expansion plates (1211) is fixedly connected to an L-shaped clamping plate (1212). The top and bottom of the inner sides of the two L-shaped clamping plates (1212) are fixedly connected to a fixed crossbar (1213).

7. A multi-directional composite seismic isolation bearing for building structures according to claim 6, characterized in that: The inner sides of the two sets of fixed crossbars (1213) are aligned with the left and right sides of the seismic isolation bearing (2), and fixed side blocks (1214) are fixedly connected to the front and rear sides of the two sets of fixed crossbars (1213).

8. A multi-directional composite seismic isolation bearing for building structures according to claim 5, characterized in that: Both of the aforementioned retractable and expandable components (122) include inverted concave retractable and expandable side plates (1221). The top and bottom of the outer sides of the left and right sets of inverted concave retractable and expandable side plates (1221) are fixedly connected to the top and bottom of the inner sides of the two retractable and expandable plates (1211). Hinges (1223) are fixedly connected to the front and rear sides of the inner sides of the left and right sets of inverted concave retractable and expandable side plates (1221). Sliding blocks (1222) are fixedly connected to the side of the inner sides of the left and right sets of inverted concave retractable and expandable side plates (1221) away from the hinge blocks (1223).

9. A multi-directional composite seismic isolation bearing for building structures according to claim 8, characterized in that: The outer walls of the two sets of sliding blocks (1222) on the left and the two sets of sliding blocks (1222) on the right are slidably connected to the inner sides of the two sets of guide rods (115) on the left and the two sets of guide rods (115) on the right.

10. A multidirectional composite seismic isolation bearing for building structures according to claim 9, characterized in that: The inner sides of the two sets of hinge blocks (1223) on the front side and the two sets of hinge blocks (1223) on the right side are rotatably connected to rotating rods (1224). The two sets of rotating rods (1224) on the front side and the two sets of rotating rods (1224) on the rear side are rotatably connected to push-pull plates (1225) on the side away from the hinge blocks (1223). The outer sides of the two sets of push-pull plates (1225) on the front and rear sides are fixedly connected to triangular mud-surface insert plates (1226). The rear sides of the inner sides of the two inverted concave expansion side plates (1221) at the bottom are fixedly connected to the left and right ends of the double-line electric pull rod (1111).

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