CN115874721A - A Seismic Isolation Support Mechanism Suitable for Large Area Seismic Isolation Structures - Google Patents

Abstract

The invention belongs to the technical field of building structures and life line engineering, and particularly relates to a shock insulation support mechanism suitable for a large-area shock insulation structure, which comprises a top sliding system, a bottom sliding system, a shock insulation rubber support and a plurality of anti-shearing pieces, wherein the top sliding system and the bottom sliding system are the same in structure and respectively comprise an inner frame system, an outer frame system, a pin key system and a rolling shaft system, the pin key system is used for preventing the inner frame system from continuously sliding, the inner frame system slides on the outer frame system through the rolling shaft system, the pin key system is arranged on the outer frame system, the shock insulation rubber support and the anti-shearing pieces are arranged between the two inner frame systems, and the anti-shearing pieces are arranged around the shock insulation rubber support; when large horizontal deformation occurs due to earthquake, the shock insulation support plays a horizontal shock absorption function, and the safety of the upper shock insulation structure is protected.

Description

A Seismic Isolation Support Mechanism Suitable for Large Area Seismic Isolation Structures

technical field

The invention relates to a building structure and a shock-isolation support for major lifeline projects and an installation method thereof, belonging to the technical field of building structures and lifeline engineering, and in particular to a shock-isolation support mechanism suitable for large-area shock-isolation structures.

Background technique

The laminated rubber seismic isolation technology can greatly reduce the damage caused by earthquakes to building structures and bridge structures. It can significantly reduce its seismic effect mainly by prolonging the structural period and increasing damping. With the promotion and popularization of seismic isolation technology, structures such as large-scale terminal buildings, large-area warehouses, and super-large LNG storage tanks are gradually adopting seismic isolation technology. The overall structure will have a large creep deformation within a certain period of time after construction, and thermal expansion and contraction will occur when the temperature changes. If the support is fixed up and down, the relative deformation will be on the top of the rubber isolation support. If the bearing is relatively deformed for a long time, it may be damaged to a certain extent, which will affect the bearing capacity of the bearing. How to meet the free creep deformation of the upper isolation structure and the free expansion and contraction under temperature load without affecting the shock absorption function of the isolation support during an earthquake requires a support installation mechanism and installation that meets the above two requirements at the same time. method.

Contents of the invention

The purpose of the present invention is to provide a method that not only does not hinder the free creep deformation of the large-area seismic isolation structure and the free expansion and contraction deformation under temperature during installation, but also prevents the seismic isolation support from reducing its bearing capacity due to constant additional deformation. A kind of shock-isolation support mechanism suitable for large areas that reduces its safety reserve.

The present invention realizes this object through the following technical solutions:

A shock-isolation support mechanism suitable for large-area shock-isolation structures, including a top slide system, a bottom slide system, a shock-isolation rubber support, and multiple shear parts. The top slide system and the bottom slide system have the same structure, and both include Inner frame system, outer frame system, pin key system and roller system, the roller system is arranged on the inner frame system, the inner frame system can slide on the outer frame system through the roller system, the pin key system is set On the outer frame system, when the inner frame system slides on the outer frame system, the pin key system is touched, and the pin key system prevents the inner frame system from continuing to slide, and the shock-absorbing rubber bearing and shear parts are arranged on the inner frame of the top sliding system Between the system and the inner frame system of the bottom sliding system, the shearing parts are arranged around the vibration-isolation rubber bearing.

Further, the top sliding system and the bottom sliding system are arranged perpendicular to each other in the horizontal direction.

Further, the outer frame system includes a bottom plate, a transverse plate frame, a longitudinal plate frame and an outer longitudinal horizontal baffle, and the base plate, the transverse plate frame, the longitudinal plate frame and the outer longitudinal horizontal baffle form an accommodating The outer panel cavity of the inner frame system, the inner frame system slides in the outer panel cavity through a roller system.

Further, the inner frame system includes a top board, an inner frame and an inner longitudinal horizontal baffle, and the top board, the inner frame and the inner longitudinal horizontal baffle enclose an inner board cavity for accommodating a roller system, and the roller The bottom of the system is in contact with the bottom plate, and the shock-absorbing rubber bearing and the shear member are arranged between the top plate of the top sliding system and the top plate of the bottom sliding system.

Further, the roller system includes several rollers, transverse connecting frame plates and longitudinal connecting rods, the transverse connecting frame plates are connected with the longitudinal connecting rods to form a fixed frame, and the longitudinal connecting rods are provided with multiple The two ends of the roller are arranged in the through hole, and the fixed frame is arranged in the inner plate frame.

Preferably, a polytetrafluoroethylene plate is arranged on the top plate corresponding to the longitudinal connecting rod, and the longitudinal connecting rod of the roller system is in contact with the polytetrafluoroethylene plate.

Further, the pin key system includes a first annular guide rod, a second annular guide rod, a circular pin, a left square pin and a right square pin, the circular pin is covered with a spring, the left square pin and the right square pin The right square pins are equipped with pre-tension springs, the circular pins are respectively set on the horizontal plate frames on both sides, the left square pins are set on the left end of the longitudinal plate frame, and the right square pins are set on the longitudinal At the right end of the plate frame, the first annular guide rod passes through the left circular pin and the right square pin and is arranged on the left outer side of the outer frame system, and the second annular guide rod passes through the right circular pin and the right square pin. The left square pin is arranged on the right outer side of the outer frame system.

Preferably, the left square pin is provided with a through hole through which the first annular guide rod passes.

Preferably, the shear member is X-shaped.

Compared with the prior art, the beneficial effects of the present invention are:

1. The shock-isolation support mechanism suitable for large-area shock-isolation structures of the present invention, because the shock-isolation rubber support is locked in the horizontal direction by the shear parts, and the top sliding system and the bottom sliding system can have a small displacement in the horizontal direction Free sliding within the range, when the large-area seismic isolation structure undergoes creep deformation and temperature deformation, the seismic isolation rubber bearing can stably bear the vertical load transmitted by the upper structure to ensure the safety of the upper structure; because the top sliding system and the bottom sliding system They are perpendicular to each other, so that the creep deformation or temperature deformation is not limited by the horizontal direction; when a large horizontal deformation occurs due to an earthquake, the pin system will pop up, the top sliding system and the bottom sliding system will be stuck, and the shear resistance The parts will be cut off, so that the shock-isolation support can deform freely in the horizontal direction, play the function of horizontal shock absorption, and protect the safety of the upper shock-isolation structure.

2. In the shock-isolation support mechanism suitable for large-area shock-isolation structures of the present invention, the inner frame system and the outer frame system slide relatively through the roller system, so that the friction force of the entire shock-isolation support mechanism on the top surface and the bottom When the concrete structure at the bottom of the large-area seismic isolation structure undergoes outward creep deformation or temperature deformation during the construction stage, the friction force can be easily overcome, and unconstrained, outward creep deformation and The outward and inward temperature deformation prevents the concrete structure from forming cracks due to the inability to undergo free creep deformation or temperature deformation, which may affect the safety of the structure.

Description of drawings

Fig. 1 is a structural schematic diagram of the shock-isolation bearing mechanism of the present invention.

Fig. 2 is a schematic structural diagram of the top sliding system or the bottom sliding system in Fig. 1 .

FIG. 3 is a schematic structural diagram of the frame system in FIG. 2 .

Fig. 4 is a schematic structural diagram of the inner frame system in Fig. 2 .

FIG. 5 is a schematic structural diagram of the roller system in FIG. 4 .

FIG. 6 is a schematic structural diagram of the first circular pin or the second circular pin in FIG. 3 .

FIG. 7 is a schematic structural diagram of the first square pin in FIG. 3 .

FIG. 8 is a schematic structural diagram of the second square pin in FIG. 3 .

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1.

As shown in Figure 1-2, this embodiment provides a shock-isolation support mechanism suitable for large-area shock-isolation structures, including a top sliding system 1, a bottom sliding system 4, a shock-isolation rubber support 2 and multiple shear parts 3. The top sliding system 1 and the bottom sliding system 4 have the same structure, and both include a relatively slidable inner frame system 12 (42), an outer frame system 11 (41), a pin key system and a roller system 125 (425), The roller system 125 (425) is arranged on the inner frame system 12 (42), and the inner frame system 12 (42) can slide on the outer frame system 11 (41) through the roller system 125 (425). The pin key system is arranged on the outer frame system 11 (41), and when the inner frame system 12 (42) slides on the outer frame system 11 (41), the pin key system is triggered, and the pin key system prevents the inner frame system 12 (42) from continuing to slide , the shock-isolation rubber bearing 2 and the shear member 3 are arranged between the inner frame system 12 of the top slide system 1 and the inner frame system 42 of the bottom slide system 4, and the shear member 3 is arranged on the shock-isolation rubber support Seat 2 around.

In the shock-isolation support mechanism suitable for large-area shock-isolation structures of the present invention, the setting of the shear member 3 limits the horizontal deformation of the shock-isolation rubber support 2. When creep deformation and temperature deformation occur in the large-area shock-isolation structure, Since the shock-absorbing rubber bearing 2 is locked in the horizontal direction by the shear member 3, and the sliding system 1 on the top and the sliding system 4 on the bottom use the roller system 125 (425) as the sliding member, the entire shock-absorbing bearing The friction force on the top and bottom of the mechanism is extremely small. When the concrete structure at the bottom of the large-area seismic isolation structure undergoes creep deformation or temperature deformation that extends outward during the construction stage, the friction force can be easily overcome, and unconstrained , the creep deformation extending outward and the temperature deformation outward and inward can allow the entire seismic isolation bearing to slide freely within a small displacement range in the horizontal direction, and the seismic isolation rubber bearing 2 can still stably bear the vertical force transmitted by the upper structure. to ensure the safety of the upper structure; when large horizontal deformation occurs due to earthquakes, the pin key system will pop up, and the inner frame system 12 (42) and outer frame system 11 (41) in the top sliding system 1 and bottom sliding system 4 ) relative sliding is limited, and the shear member 3 will be cut off, so that the vibration-isolation rubber bearing 2 can deform freely in the horizontal direction, and play the function of horizontal vibration-absorbing, protecting the safety of the upper vibration-isolation structure.

Wherein, the top sliding system 1 and the bottom sliding system 4 are arranged perpendicular to each other in the horizontal direction, so that the creep deformation or temperature deformation is not limited by the horizontal direction.

Wherein, as shown in Figure 3, the outer frame system 11 (41) includes a bottom plate 114 (414), a transverse frame plate 111 (411), a longitudinal frame plate 112 (412) and an outer longitudinal horizontal baffle plate 113 (413), The transverse frame plate 111 (411) and the longitudinal frame plate 112 (412) are surrounded by an outer frame, the pin key system is arranged on the outer frame, the bottom plate 114 (414), the outer frame and the outer longitudinal horizontal baffle 113 (413) surrounds and forms an outer plate cavity for accommodating the inner frame system 12 (42). The inner frame system 12 (42) slides in the outer plate cavity through the roller system 125 (425), The plate 113 (413) prevents the inner frame system 12 (42) from detaching from the outer frame system 11 (41).

Wherein, as shown in Figure 4, the inner frame system 12 (42) includes a top plate 126 (426), an inner frame and an inner longitudinal horizontal baffle 123 (423), and the top plate 126 (426), inner frame and inner The longitudinal horizontal baffle 123 (423) surrounds and forms an inner plate cavity for accommodating the roller system 125 (425), the bottom of the roller system 125 (425) is in contact with the bottom plate 114 (414), and the roller system 125 ( 425) can roll in a small range within the inner frame system 12 (42), and when the concrete structure at the bottom of the large-area seismic isolation structure undergoes creep deformation or temperature deformation that extends outward during the construction stage, it can extend outward without restraint Creep deformation and outward and inward temperature deformation, the entire shock-isolation bearing can slide freely within a small displacement range in the horizontal direction, and the shock-isolation rubber bearing 2 and shear member 3 are arranged on the top sliding system 1 Between the top plate 126 and the top plate 426 of the bottom slide system 4 .

Wherein, as shown in FIG. 5 , the roller system 125 (425) includes several rollers 1252 (4252), transverse connecting frame plates 1251 (4251) and longitudinal connecting rods 1252 (4253), and the transverse connecting frame plates 1251 (4251) is connected with the longitudinal connecting rod 1252 (4253) to form a fixed frame, the longitudinal connecting rod 1252 (4253) is provided with a plurality of through holes, and the two ends of the roller 1252 (4252) are arranged in the through hole In the hole, the fixed frame is arranged in the inner plate frame. In this embodiment, a polytetrafluoroethylene plate 124 (424) is provided on the top plate 126 (426) corresponding to the longitudinal connecting rod 1252 (4253), and the longitudinal connecting rod 1252 (4253) of the roller system Contacting with the polytetrafluoroethylene plate 124 (424) further reduces the frictional force of the support on the top and bottom, and it is easier to overcome the corresponding frictional force when performing gradual deformation and temperature deformation, so that the concrete structure will not be affected by Free creep deformation or temperature deformation can not occur to form cracks, and there will be hidden dangers affecting structural safety.

Wherein, as shown in Fig. 3, Fig. 6-Fig. 8, described pin key system comprises first annular guide rod 117 (417), second annular guide rod 1113 (4113), circular pin 115 (415), left square The pin 1115 (4115) and the right square pin 1110 (4110), the circular pin 115 (415) is covered with a spring 116 (416), in the non-working state, the spring 116 (416) is in a freely stretchable state, the Left square pin 1115 (4115) and right square pin 1110 (4110) are equipped with pretension spring 119 (419), under non-working state, pretension spring 119 (419) is in pretension state, circular pin 115 ( 415) are respectively arranged on the horizontal plate frames 111 (411) on both sides, the left square pin 1115 (4115) is set on the left end of the longitudinal plate frame 112 (412), and the right square pin 1110 (4110) is set At the right end of the longitudinal plate frame 112 (412), the first annular guide rod 117 (417) passes through the left round pin 115 (415) and the right square pin 1110 (4110) and is arranged on the outer frame system 11 (41), the second annular guide rod 1113 (4113) passes through the right circular pin 115 (415) and the left square pin 1115 (4115) and is arranged on the right outer side of the outer frame system 11 (41) .

Wherein, the second square pin 1115 (4115) is provided with a through hole 157 (457) through which the first annular guide rod 117 (417) passes.

Wherein, the shear member 3 is X-shaped. When an earthquake occurs, the bottom sliding system 1 and the top sliding system are stuck by the pin key system. At this time, the shear member 3 will bear the seismic force, and the shear member 3 will In the X-shaped design, under the action of an earthquake, the weak part in the middle is sheared, and the vibration-isolation rubber bearing 2 can undergo horizontal deformation, which plays the role of earthquake mitigation and protects the safety of the upper structure.

The installation method of the shock-isolation device of the present invention is as follows: the top slide system 1 and the bottom slide system 4 are assembled, and when the outer frame system 41 is assembled, the first annular guide rod 117 (417) is inserted into the left side in the transverse direction of the outer frame system 41. side circular pin 115 (415), and in the longitudinal series connection of the outer frame system 11 (41) into the right square pin 1110 (4110); similarly, the second annular guide rod 1113 (4113) is in the outer frame system 11 (41) ) in the lateral direction of the right side of the circular pin 115 (415), and in the vertical series of the outer frame system 11 (41) into the left square pin 1115 (4115). At this moment, the circular pin 115 (415) is stringing into the spring 116 (416) and is fixedly connected at its bottom, and the spring 116 (416) is in a free telescopic state; the left square pin 1110 (4110) and the right square pin 1115 (4115) The pre-tension springs 119 (419) are respectively connected in series and fixedly connected at their bottoms, and the pre-tension springs 119 (419) are in a pre-tension state. The bottom plate 114 (414) in the outer frame system 11 (41) is respectively connected with the bottom of the shock-isolation structure, and the top plate 126 (426) of the inner frame system 12 (42) is connected with both ends of the shock-isolation rubber bearing 2 . Finally, the top surface and the bottom surface of the shear member 3 are respectively connected with the top plate 126 of the inner frame system 12 in the top sliding system 1 and the top plate 426 of the inner frame system 42 in the bottom sliding system 4 around the vibration-isolation rubber bearing 2, Form the overall shock-isolation support mechanism of the first stage. After the earthquake, remake a new shear member 3, use a wrench tool to remove the connection between the damaged shear member 3 and the top plate 16 (46) of the inner frame system, and connect the new shear member 3 to the inner frame system. The top plate 16 (46) is bolted again, and the pre-tension spring 119 (419) in the outer frame system 11 (41) is pre-pulled to the pre-tension state again, and now the left square pin 1115 (4115) or the right direction pin 1110 (4110 ) will be pulled back out of the inner frame of the outer frame system 11 (41), and then the first annular guide rod 117 (417) or the second annular guide rod 1113 (4113) is inserted into the right direction pin 1110 (4110) or the left direction pin In 1115 (4115), the inner frame system 12 (42) will disengage from the outer frame sliding system 11 (41) in the sliding direction and return to the free sliding state. Using a horizontal thrust device, the inner frame system 12 (42) is placed in the middle of the outer frame system 11 (41), and the entire shock-isolation support structure will return to the first stage, and the large-area shock-isolation structure can still be maintained under the action of temperature. Flexible.

The working principle of the shock-isolation support mechanism of the present invention is: in the first stage of the overall shock-isolation support mechanism, since the shock-isolation rubber support 2 is locked in the horizontal direction by the shear member 3, and the top sliding system 1 And the bottom sliding system 4 can allow the support to slide freely within a small displacement range in the horizontal direction, and the large-area seismic isolation top plate on the top surface of the seismic isolation layer can realize creep deformation at the initial stage of construction and free deformation under temperature conditions. When an earthquake occurs, due to the relatively large seismic energy, the inner frame sliding system 12 (42) will hit the left side of the outer frame system 11 (41) after a large sliding deformation occurs in the shock-isolation bearing mechanism of the first stage. On the circular pin or the circular pin on the right side, at this moment the first annular guide rod 117 (417) or the second annular guide rod 1113 (4113) will be by the spring 116 (416) on the left side or the spring 116 ( 416) is released outward along the longitudinal direction, and the right square pin 1110 (4110) or the left square pin 1115 (4115) will be preset due to the release of the first annular guide rod 117 (417) or the second annular guide rod 1113 (4113). The tension spring 119 (419) is pressed into the inside of the outer frame system 11 (41), blocking the continuous sliding of the inner sliding system 12 (42). At this time, the seismic force will be borne by the shear member 3. Since the shear member 3 is deliberately provided with a weak gap in the middle, under the subsequent earthquake action, the shear member 3 will be sheared at the weak part in the middle, and the seismic isolation support structure enters In the second stage, the shock-isolation rubber bearing 2 will be capable of horizontal deformation, which will play a role in mitigating earthquakes and protect the safety of the superstructure.

Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is exemplary only, and is not intended to imply that the scope of the present disclosure (including claims) is limited to these examples; under the idea of the present invention, the above embodiments or Combinations between technical features in different embodiments are also possible, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A shock-isolation support mechanism suitable for large-area shock-isolation structures, characterized in that it comprises a top slide system, a bottom slide system, a shock-isolation rubber bearing and a plurality of shear parts, and the top slide system and the bottom slide The systems have the same structure, including an inner frame system, an outer frame system, a pin key system and a roller system. The roller system is set on the inner frame system, and the inner frame system can slide on the outer frame system through the roller system. The pin key system is arranged on the outer frame system. When the inner frame system slides on the outer frame system, the pin key system is touched, and the pin key system prevents the inner frame system from continuing to slide. Between the inner frame system of the top sliding system and the inner frame system of the bottom sliding system, the shearing member is arranged around the vibration-isolation rubber bearing. 2. The seismic isolation support mechanism suitable for large-area seismic isolation structures according to claim 1, wherein the top sliding system and the bottom sliding system are arranged vertically to each other in the horizontal direction. 3. The shock-isolation support mechanism suitable for large-area shock-isolation structures according to claim 1, wherein the outer frame system includes a bottom plate, a transverse plate frame, a longitudinal plate frame and an outer longitudinal horizontal baffle plate, the The bottom plate, the transverse plate frame, the longitudinal plate frame and the outer longitudinal horizontal baffle form an outer plate cavity for accommodating the inner frame system, and the inner frame system slides in the outer plate cavity through a roller system. 4. The shock-isolation support mechanism suitable for large-area shock-isolation structures as claimed in claim 3, wherein the inner frame system includes a top plate, an inner frame and an inner longitudinal horizontal baffle, and the top plate, the inner frame and the The inner longitudinal horizontal baffle surrounds and forms an inner panel cavity for accommodating the roller system, the bottom of the roller system is in contact with the bottom panel, and the shock-absorbing rubber bearings and shear members are arranged on the top panel and the bottom panel of the top sliding system between the top plates of the sliding system. 5. The shock-isolation bearing mechanism suitable for large-area shock-isolation structures as claimed in claim 4, wherein the roller system includes several rollers, transversely connecting frame plates and longitudinally connecting rods, and the transversely connecting The frame plate is connected with the longitudinal connecting rods to form a fixed frame, the longitudinal connecting rods are provided with a plurality of through holes, the two ends of the rollers are arranged in the through holes, and the fixed frame is arranged in the inner plate frame. 6. The shock-isolation support mechanism suitable for large-area shock-isolation structures as claimed in claim 5, wherein a polytetrafluoroethylene plate is arranged on the top plate corresponding to the longitudinal connecting rod, and the rollers The longitudinal connecting rods of the system are in contact with the Teflon plates. 7. The shock-isolation support mechanism suitable for large-area shock-isolation structures according to claim 3, wherein the pin key system includes a first annular guide rod, a second annular guide rod, a circular pin, a left square pins and right square pins, the circular pins are covered with springs, the left square pins and right square pins are covered with pre-tension springs, and the circular pins are respectively arranged on the horizontal plate frames on both sides. The left square pin is set at the left end of the longitudinal plate frame, the right square pin is set at the right end of the longitudinal plate frame, and the first annular guide rod passes through the left round pin and the right square pin and is set at the On the left outer side of the outer frame system, the second annular guide rod is arranged on the right outer side of the outer frame system through the right circular pin and the left square pin. 8. The shock-isolation bearing mechanism suitable for large-area shock-isolation structures according to claim 7, wherein a through hole through which the first annular guide rod passes is provided on the left square pin. 9. The seismic isolation bearing mechanism suitable for large-area seismic isolation structures according to claim 1, characterized in that, the shearing member is X-shaped.

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