PC component shock insulation trench structure
By adopting a seismic isolation trench structure with PC components and grouting connections, the problems of poor rebar binding quality and rigid connection were solved, achieving convenient operation and stable seismic isolation effect, and improving seismic resistance and waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANXI CONSTR ENG CO LTD
- Filing Date
- 2023-07-12
- Publication Date
- 2026-06-12
AI Technical Summary
The quality of steel reinforcement binding in existing seismic isolation trenches cannot be guaranteed, operation is inconvenient, and rigid connection with the main structure will weaken the seismic isolation effect, making fixing and dismantling difficult.
PC components are used instead of traditional reinforced concrete components. Through tongue and groove joints and grouting connections, combined with anti-sway supports and shock-absorbing bearings, a stable seismic isolation structure is formed. Waterproof membranes and joint sealing structures are used to improve sealing and waterproof performance.
It enables convenient fixing and dismantling, improves the connection stability and seismic performance of the seismic isolation trench, enhances the seismic protection effect on the upper building, and maintains good waterproof performance.
Smart Images
Figure CN117536348B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building seismic isolation trench technology, and particularly to a seismic isolation trench structure made of PC components. Background Technology
[0002] Schools, kindergartens, hospitals, emergency shelters, radio and television stations, and other buildings located in high-intensity seismic fortification areas or key earthquake monitoring and defense zones should adopt seismic isolation and damping technologies in accordance with relevant national regulations to ensure that they can meet normal use requirements when a seismic fortification earthquake occurs in the area. Seismic isolation technology generally refers to setting up seismic isolation trenches at the base of the building or at a certain location to isolate the superstructure from the foundation, thereby dissipating seismic energy and preventing or reducing the transmission of seismic energy to the upper part, which can more effectively protect the safety of the superstructure, internal personnel, and equipment.
[0003] Furthermore, the dynamic compaction process generates enormous energy, some of which is converted into stress waves. These stress waves primarily manifest as seismic waves, which propagate from the compaction point to the surrounding area, causing ground vibrations. These vibrations result in uneven settlement of the surrounding soil, causing varying degrees of damage to the surrounding environment, residents, buildings, and underground pipelines, severely impacting the normal lives of nearby residents. Consequently, it is necessary to install seismic isolation trenches to block the propagation of seismic waves.
[0004] Existing seismic isolation trenches exist, and auxiliary seismic isolation mechanisms are mostly constructed by reinforcing steel binding and casting, which makes it difficult to guarantee the binding quality. In particular, the spacing within the trench is too small, making it inconvenient for personnel to operate. Generally, the width of a seismic isolation trench should be greater than 60cm, and the depth is usually not less than 2m, making it difficult to fix and dismantle larger auxiliary seismic isolation mechanisms made of reinforcing steel binding and casting. The main function of seismic isolation trenches is wave elimination and filtering. Seismic isolation trenches reduce the energy of most of the horizontal components of seismic waves to a minimum, and also greatly attenuate the energy of the quake waves. However, seismic isolation trenches are often rigidly connected to the main structure, which weakens the effectiveness of the seismic isolation trenches during earthquakes. Summary of the Invention
[0005] In view of this, the present invention provides a PC component seismic isolation trench structure to solve the problems that auxiliary seismic isolation mechanisms are mostly made of steel reinforcement binding and casting, the binding quality cannot be guaranteed, especially the small spacing in the trench, which makes it inconvenient for personnel to operate; generally, the width of the seismic isolation trench should be greater than 60cm and the depth is usually not less than 2m, which makes it difficult to fix and dismantle the auxiliary seismic isolation mechanism made of larger steel reinforcement binding and casting; often the seismic isolation trench is rigidly connected to the main body, which weakens the effect of the seismic isolation trench when an earthquake occurs.
[0006] This invention provides a PC component seismic isolation trench structure, specifically comprising: a beam-column joint, a cast-in-place corbel, a trench cover extending protruding from the right side of the top of the beam-column joint, and a drainage ditch with a U-shaped cross-section at the bottom right end of the trench cover; the cast-in-place corbel is spaced below the bottom of the beam-column joint, and a damping support is pressed between the cast-in-place corbel and the beam-column joint; the damping support is composed of two circular mounting plates and a rubber buffer pad fixed between the two mounting plates; a vertically arranged PC plate is provided between the right end of the trench cover and the cast-in-place corbel, and a Z-shaped tongue-and-groove joint is provided between the bottom of the PC plate and the cast-in-place corbel, with a tongue-and-groove node in the joint; the bottom side of the PC plate is open to... The PC board is fixed to the cast-in-place corbel through a tongue-and-groove joint; the tongue and groove of the Z-shaped structure is filled with high-strength mortar for sealing, and the high-strength mortar is used to seal the tongue and groove of the Z-shaped structure and to grout the connection between the PC board and the cast-in-place corbel; a concrete waterstop is set between the bottom part of the PC board and the cast-in-place corbel to seal the tongue and groove of the Z-shaped structure; a seismic isolation trench is formed between the PC board and the beam and column, and an anti-sway bracket is set in the middle part of the seismic isolation trench; the anti-sway bracket is triangular in structure, and its two ends are fixed to the PC board and the beam and column respectively by pre-embedded sleeves and bolts; two fixing angle steels are symmetrically fixed to the top position of the anti-sway bracket on the PC board and the beam and column by pre-embedded sleeves and bolts.
[0007] Furthermore, four screw posts are symmetrically welded to the top of the anti-sway bracket, the bottom horizontal parts of the two fixing angle steels are sleeved with the four screw posts, and a tie steel plate is sleeved on the top section of the four screw posts.
[0008] Furthermore, a waterproof membrane is provided between the PC board and the drainage ditch and the ditch cover, as well as on the outside of the PC board and the cast-in-place corbel.
[0009] Furthermore, the top of the cast-in-place corbel is provided with embedded steel bars near the PC board, and a grouting sleeve is embedded in the bottom part of the PC board. The grouting sleeve is fitted with the embedded steel bars, and high-strength mortar is filled in the grouting sleeve.
[0010] Furthermore, the top portion of the PC board is filled with a joint sealing structure between itself and the trench cover. The joint sealing structure is composed of, from top to bottom, a thick weather-resistant sealant, a foamed polyethylene rod, a foamed neoprene rubber airtight strip, a thick rock wool board for filling the joint, a foamed polyethylene rod, and a thick weather-resistant sealant extrusion.
[0011] Furthermore, four inner and outer rings of reinforcing steel rods are fixedly welded to the two mounting plates in a corresponding manner, and the four rings of reinforcing steel rods are fixed to the beams, columns and cast-in-place corbels.
[0012] Furthermore, six buffer bars are welded around the two mounting plates, and each of the six buffer bars has a protruding ring on its middle section.
[0013] Furthermore, the protruding ring and the upper and lower halves of the buffer rod form two S-shaped bends.
[0014] Furthermore, the tie plate is locked against the bottom horizontal portion of the two fixed angle steels by the nuts at the top of the four screw posts.
[0015] Furthermore, the seam sealing structure is located on the top layer of the waterproof membrane. Beneficial effects
[0016] 1. In this invention, the PC board is the PC seismic isolation component. This invention uses PC components instead of traditional cast-in-place reinforced concrete components. Compared with traditional auxiliary seismic isolation mechanisms that are mostly made of steel reinforcement binding and casting, it can avoid the problems of unreliable binding quality, excessively small spacing in the trench, and inconvenience for personnel operation. In addition, the PC is relatively small and light, which can be used for the width and minimum depth of general seismic isolation trenches. Compared with traditional large auxiliary seismic isolation mechanisms made of steel reinforcement binding and casting, the fixing and dismantling operations are more convenient, saving time and effort.
[0017] 2. In this invention, the tongue-and-groove joint provides good stability for the connection between the bottom of the PC slab and the cast-in-place corbel. Furthermore, the interlocking connection of the tongue-and-groove joint, combined with the grouting connection, further enhances the connection stability between the PC slab and the cast-in-place corbel, while also ensuring good sealing between them. The concrete waterstop prevents displacement and blocks water in the tongue-and-groove joint, helping to ensure the connection effect between the tongue-and-groove joint and the PC slab and the cast-in-place corbel. The grouting sleeve and the pre-embedded steel bar are fitted together and grouted, which further enhances the connection stability between the PC slab and the cast-in-place corbel.
[0018] 3. In this invention, the PC board is fixed to the seismic isolation trench by lower grouting connection and upper bracing. Compared with the traditional seismic isolation trench that is rigidly connected to the main body, it does not weaken the effect of the seismic isolation trench when an earthquake occurs, and is conducive to improving the seismic performance of the seismic isolation trench.
[0019] 4. In this invention, the thick weather-resistant sealant has excellent weather resistance and anti-aging properties; the foamed polyethylene rod is flexible and elastic with good deformation properties and moisture-proof and friction-proof properties; the foamed neoprene rubber airtight strip has good oil resistance, heat resistance, and flame retardancy; and the thick rock wool board filler has good tensile strength. These properties work together to give the joint sealing structure good durability, sealing properties, and tensile deformation properties, enabling better connection and sealing of the gap between the top part of the PC board and the trench cover.
[0020] 5. The present invention provides a shock-absorbing bearing that can suppress and assist in earthquake protection against seismic waves transmitted from the base to the superstructure. When used in conjunction with a seismic isolation trench, it can effectively enhance the earthquake protection effect on the superstructure. When the shock-absorbing bearing is compressed during an earthquake, the double S-shaped bending on the six buffer rods can elastically deform and distribute the pressure on the rubber buffer pad, thereby improving the shock-absorbing and buffering performance of the shock-absorbing bearing.
[0021] 6. In this invention, the waterproof membrane provides better waterproofing at the joint between the main building structure and the PC components, which helps to improve the waterproofing performance of the seismic isolation trench. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.
[0023] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.
[0024] In the attached diagram:
[0025] Figure 1 This is a schematic diagram of the overall structure of the PC component vibration isolation trench structure of the present invention.
[0026] Figure 2 This is a diagram showing the installation position of the anti-sway bracket in the PC component vibration isolation trench structure of the present invention.
[0027] Figure 3 This is a schematic diagram of the bottom section of the PC board in the PC component vibration isolation trench structure of the present invention.
[0028] Figure 4 This is a schematic diagram of the anti-sway support structure of the PC component vibration isolation trench structure of the present invention.
[0029] Figure 5 The PC component vibration isolation trench structure of the present invention Figure 1 Enlarged structural diagram of section A.
[0030] Figure 6 The PC component vibration isolation trench structure of the present invention Figure 1 Enlarged structural diagram of section B.
[0031] Figure 7 This is a schematic diagram of the bottom structure of the anti-sway support of the PC component vibration isolation trench structure of the present invention.
[0032] Figure 8 This is a schematic diagram of the vibration damping support structure of the PC component isolation trench structure of the present invention.
[0033] Figure 9 The PC component vibration isolation trench structure of the present invention Figure 3 Enlarged structural diagram of section C.
[0034] List of reference numerals
[0035] 1. Beams and columns; 101. Trench cover; 102. Drainage ditch; 2. Cast-in-place corbel; 201. Embedded steel bars; 3. Vibration damping bearings; 301. Mounting plate; 302. Buffer rod; 4. PC board; 401. Grouting sleeve; 5. Tongue and groove joint; 6. Concrete waterstop; 7. Waterproof membrane; 8. Joint sealing structure; 9. Anti-sway bracket; 901. Tie plate; 10. Fixed angle steel. Detailed Implementation
[0036] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.
[0037] Example: Please refer to Figures 1 to 9 As shown:
[0038] This invention provides a PC component seismic isolation trench structure, including a beam-column 1, a cast-in-place corbel 2, a trench cover 101 extending protruding from the right side of the top of the beam-column 1, and a drainage ditch 102 with a U-shaped cross-section at the bottom right end of the trench cover 101; the cast-in-place corbel 2 is spaced below the bottom of the beam-column 1, and a damping support 3 is squeezed between the cast-in-place corbel 2 and the beam-column 1; the damping support 3 is composed of two circular mounting plates 301 and a rubber buffer pad fixed between the two mounting plates 301; a vertically arranged PC component is provided between the right end of the trench cover 101 and the cast-in-place corbel 2. Plate 4, or PC plate 4, is a PC seismic isolation component. This invention uses PC components instead of traditional cast-in-place reinforced concrete components. Compared to traditional auxiliary seismic isolation mechanisms, which are mostly made of tied and cast steel bars, this avoids problems such as inconsistent binding quality and insufficient spacing within the trench, making operation inconvenient. Furthermore, PC is relatively small and lightweight, suitable for the width and minimum depth of general seismic isolation trenches. Its fixing and dismantling are more convenient than traditional, larger auxiliary seismic isolation mechanisms made of tied and cast steel bars, saving time and effort. Additionally, a Z-shaped tongue-and-groove structure is provided between the bottom of PC plate 4 and the cast-in-place corbel 2. A tongue-and-groove joint 5 is provided in the tongue-and-groove joint, and the bottom part of the PC board 4 is fixed to the cast-in-place corbel 2 through the tongue-and-groove joint 5. The tongue-and-groove joint of the Z-shaped structure is filled with high-strength mortar for sealing. The high-strength mortar is used to seal the tongue-and-groove joint of the Z-shaped structure and to grout the connection between the PC board 4 and the cast-in-place corbel 2. The tongue-and-groove joint 5 provides good stability for the connection between the bottom of the PC board 4 and the cast-in-place corbel 2. In addition, the interlocking connection of the tongue-and-groove joint 5, together with the grouting connection, can further improve the connection stability between the PC board 4 and the cast-in-place corbel 2, and also better ensure the sealing performance of the PC board 4 and the cast-in-place corbel 2. The bottom part of the PC board 4 and the cast-in-place corbel A concrete waterstop 6 is installed between the two beams 2 and 2. The concrete waterstop 6 seals the tongue and groove of the Z-shaped structure. The concrete waterstop 6 plays a role in preventing displacement and blocking water in the tongue and groove, which helps to ensure the connection effect of the tongue and groove to the PC plate 4 and the cast-in-place corbel 2. A seismic isolation trench is formed between the PC plate 4 and the beam and column 1, and an anti-sway bracket 9 is installed in the middle part of the seismic isolation trench. The anti-sway bracket 9 has a triangular structure, and its two ends are fixed to the PC plate 4 and the beam and column 1 respectively by pre-embedded sleeves and bolts. Two fixing angle steels 10 are symmetrically fixed to the top of the anti-sway bracket 9 on the PC plate 4 and the beam and column 1 by pre-embedded sleeves and bolts.
[0039] Among them, the top of the anti-sway bracket 9 is symmetrically welded with four screw columns, the bottom horizontal parts of the two fixing angle steels 10 are sleeved with the four screw columns, and a tie steel plate 901 is sleeved and connected to the top section of the four screw columns. The PC plate 4 is fixed to the seismic isolation trench by the method of lower grouting connection and upper tie. Compared with the traditional seismic isolation trench that is rigidly connected to the main body, it will not weaken the effect of the seismic isolation trench when an earthquake occurs, and it is conducive to improving the seismic performance of the seismic isolation trench.
[0040] Among them, waterproof membrane 7 is installed between PC board 4 and drainage ditch 102 and ditch cover 101, as well as on the outside of PC board 4 and cast-in-place corbel 2. The waterproof membrane 7 provides good waterproof treatment at the joint between the main building structure and PC components, which helps to improve the waterproof performance of the seismic isolation ditch.
[0041] Among them, the top of the cast-in-place corbel 2 is provided with a pre-embedded steel bar 201 near the PC slab 4, and a grouting sleeve 401 is embedded in the bottom side of the PC slab 4. The grouting sleeve 401 and the pre-embedded steel bar 201 are fitted together and filled with high-strength mortar. The grouting sleeve 401 and the pre-embedded steel bar 201 are fitted together and grouted together, which helps to further improve the connection stability between the PC slab 4 and the cast-in-place corbel 2.
[0042] The top part of the PC board 4 is filled with a joint sealing structure 8 between itself and the trench cover 101. The joint sealing structure 8 is composed of, from top to bottom, a thick weather-resistant sealant, a foamed polyethylene rod, a foamed neoprene rubber airtight strip, a thick rock wool board for filling the gap, and the extrusion of the foamed polyethylene rod and the thick weather-resistant sealant. The thick weather-resistant sealant has excellent weather resistance and anti-aging properties. The foamed polyethylene rod is flexible and elastic with good deformation properties and moisture-proof and friction-proof properties. The foamed neoprene rubber airtight strip has good oil resistance, heat resistance, and flame retardancy properties. The thick rock wool board for filling the gap has good tensile strength. These properties work together to give the joint sealing structure 8 good durability, sealing properties, and tensile deformation properties, which can effectively connect and seal the gap between the top part of the PC board 4 and the trench cover 101.
[0043] Among them, the two installation plates 301 are fixedly welded with four rings of steel bars with inner and outer rings, and the four rings of steel bars are fixed to the beams and columns 1 and the cast-in-place corbels 2. The shock-absorbing bearings 3 can suppress the seismic waves transmitted from the base to the superstructure and assist in earthquake protection. When used in conjunction with the seismic isolation trench, it can effectively enhance the earthquake protection effect of the superstructure. The joint sealing structure 8 is located on the top layer of the waterproof membrane 7.
[0044] Among them, six buffer rods 302 are welded around the two mounting plates 301, and a protruding ring is provided on the middle section of each of the six buffer rods 302.
[0045] Among them, two S-shaped bends are formed between the protruding ring and the upper and lower halves of the buffer rod 302. When the shock absorber 3 is compressed during an earthquake, the double S-shaped bends on the six buffer rods 302 can elastically deform and distribute the pressure on the rubber buffer pad, thereby improving the shock absorber 3's shock absorption and buffer protection performance.
[0046] Among them, the tie plate 901 is locked and abutted against the bottom horizontal part of the two fixed angle steels 10 by the nuts at the top of the four screw columns.
[0047] The specific usage and function of this embodiment: In this invention, PC board 4 is a PC anti-vibration component. This invention uses PC components instead of traditional cast-in-place reinforced concrete components. The tongue and groove joint 5 provides good stability for the connection between the bottom of PC board 4 and the cast-in-place corbel 2. In addition, the interlocking connection of the tongue and groove joint 5, together with the grouting connection, can further improve the connection stability between PC board 4 and cast-in-place corbel 2, and better balance the sealing performance between PC board 4 and cast-in-place corbel 2.
[0048] The PC board 4 is fixed to the seismic isolation trench by the lower grouting connection and the upper tie. The waterproof membrane 7 provides good waterproofing treatment at the joint between the main building structure and the PC component, which helps to improve the waterproof performance of the seismic isolation trench. The grouting sleeve 401 and the pre-embedded steel bar 201 are fitted together and grouted together, which helps to further improve the connection stability between the PC board 4 and the cast-in-place corbel 2.
[0049] Thick weather-resistant sealant has excellent weather resistance and anti-aging properties; foamed polyethylene rods are flexible and elastic with good deformation properties and moisture-proof and friction-proof properties; foamed neoprene rubber airtight strips have good oil resistance, heat resistance, and flame retardancy; and thick rock wool board filler has good tensile strength. These properties work together to give the joint sealing structure 8 good durability, sealing and tensile deformation properties, which can effectively connect and seal the gap between the top part of PC board 4 and trench cover 101. In addition, the waterproof membrane 7 provides good waterproof treatment at the joint between the main building structure and PC components, which helps to improve the waterproof performance of the seismic isolation trench.
[0050] The damping bearing 3 can suppress and assist in earthquake protection against seismic waves transmitted from the base to the superstructure. When used in conjunction with the seismic isolation trench, it can effectively enhance the earthquake protection effect on the superstructure. When the damping bearing 3 is compressed during an earthquake, the double S-shaped bending on the six buffer rods 302 can elastically deform and distribute the pressure on the rubber buffer pad, thereby improving the damping and buffering performance of the damping bearing 3.
Claims
1. A PC member seismic trench structure, characterized by, include: A beam-column (1) and a cast-in-place corbel (2) are provided. A trench cover (101) is extended and protruded from the right side of the top of the beam-column (1). A drainage ditch (102) with a U-shaped cross-section is provided at the bottom right end of the trench cover (101). The cast-in-place corbel (2) is located below the bottom of the beam-column (1) at intervals, and a shock-absorbing support (3) is squeezed between the cast-in-place corbel (2) and the beam-column (1). The shock-absorbing support (3) is composed of two circular mounting plates (301) and a rubber buffer pad fixed between the two mounting plates (301). A vertically arranged PC plate (4) is provided between the right end of the trench cover (101) and the cast-in-place corbel (2). A Z-shaped tongue and groove structure is provided between the bottom of the PC plate (4) and the cast-in-place corbel (2). A tongue and groove node (5) is provided in the tongue and groove. The bottom part of the PC plate (4) is connected by a tongue and groove joint. The tongue and groove joint (5) is engaged and fixed with the cast-in-place corbel (2); the tongue and groove joint of the Z-shaped structure is filled with high-strength mortar for sealing. The high-strength mortar is used to seal the tongue and groove joint of the Z-shaped structure and to grout the connection between the PC plate (4) and the cast-in-place corbel (2); a concrete waterstop (6) is set between the bottom part of the PC plate (4) and the cast-in-place corbel (2), and the concrete waterstop (6) seals the tongue and groove joint of the Z-shaped structure; a seismic isolation groove is formed between the PC plate (4) and the beam and column (1), and an anti-sway bracket (9) is set in the middle part of the seismic isolation groove; the anti-sway bracket (9) is triangular in shape, and its two ends are fixed to the PC plate (4) and the beam and column (1) respectively by pre-embedded sleeves and bolts; two fixed angle steels (10) are symmetrically fixed at the top position of the anti-sway bracket (9) on the PC plate (4) and the beam and column (1) by pre-embedded sleeves and bolts.
2. The PC component seismic isolation trench structure as described in claim 1, characterized in that: The top of the anti-sway bracket (9) is symmetrically welded with four screw posts, the bottom horizontal parts of the two fixing angle steels (10) are sleeved with the four screw posts, and a tie steel plate (901) is sleeved on the top section of the four screw posts.
3. The PC component seismic isolation trench structure as described in claim 1, characterized in that: Waterproof membrane (7) is provided between the PC board (4) and the drainage ditch (102) and the ditch cover (101), as well as on the outside of the PC board (4) and the cast-in-place corbel (2).
4. The PC component seismic isolation trench structure as described in claim 1, characterized in that: The top of the cast-in-place corbel (2) is provided with a pre-embedded steel bar (201) near the PC plate (4), and a grouting sleeve (401) is embedded in the bottom side of the PC plate (4), and the grouting sleeve (401) and the pre-embedded steel bar (201) are fitted together, and the grouting sleeve (401) is filled with high-strength mortar.
5. The PC component seismic isolation trench structure as described in claim 3, characterized in that: The top portion of the PC board (4) is filled with a joint sealing structure (8) between it and the trench cover (101).
6. The PC component seismic isolation trench structure as described in claim 1, characterized in that: Six buffer rods (302) are welded around the two mounting plates (301), and a protruding ring is provided on the middle section of each of the six buffer rods (302).
7. The PC component seismic isolation trench structure as described in claim 6, characterized in that: The protruding ring and the upper and lower halves of the buffer rod (302) form two S-shaped bends.
8. The PC component seismic isolation trench structure as described in claim 2, characterized in that: The tie plate (901) is locked against the bottom horizontal portion of the two fixed angle steels (10) by the nuts at the top of the four screw posts.
9. The PC component seismic isolation trench structure as described in claim 5, characterized in that: The joint sealing structure (8) is located on the top layer of the waterproof membrane (7).