CN108708386A - Vertical storage tank ring beam rolling shock insulation device - Google Patents

Abstract

A vertical storage tank ring beam rolling vibration isolation device, the lower ring beam is placed on the ground with the lower end surface, the upper end surface is a circular ring with an upper opening arc groove in section, and the upper ring beam corresponding to the lower ring beam, Its lower end surface is a circular ring with a lower opening arc-shaped groove in section. The lower opening arc-shaped groove on it has the same curvature as the upper opening arc-shaped groove on the lower ring beam and is opposite up and down. There are several steel rings in the space between them. Ball, on the inner ring surface of the upper and lower ring beams, there is a soft steel plate cylinder adjacent to the outer peripheral surface. The inner diameters are corresponding and placed in it, the lower end of the lower backing plate is placed on the ground, and a sand cushion is arranged on it. The invention can improve the stability of the storage tank, increase the shock absorption and energy consumption capacity of the storage tank, has the function of instantaneous reset, can not only support the purpose of the upper structure, but also can achieve the purpose of isolating the input of earthquakes to the upper structure. The installation and construction are simple and the cost is low.

Description

Vertical Storage Tank Ring Beam Rolling Vibration Isolation Device

Technical Field The present invention relates to a vibration isolation device, in particular to a vibration isolation foundation applied to a vertical storage tank ring.

Background Art Vertical storage tanks are important facilities for storing resources such as oil and natural gas. Due to its storage of explosive, flammable and toxic media, once an earthquake disaster occurs, the consequences will be very serious, and it will easily induce secondary disasters such as fire and environmental pollution, and even threaten human life and property safety, bringing huge economic losses to the national economy. loss. The existing ordinary rolling shock isolation device has high cost, poor stability, no self-resetting ability and poor shock absorption and energy consumption; the existing single sand cushion shock isolation system has high requirements for sand cushion materials, and the recovery Strength and carrying capacity can not meet the requirements.

SUMMARY OF THE INVENTION The object of the present invention is to provide a vertical storage tank ring beam rolling isolation device that can effectively reduce the seismic response of the vertical storage tank. The present invention is mainly based on the structural form of the ring wall foundation of a large vertical storage tank, and designs a vibration isolation device combining a ring beam rolling and a sand cushion, so as to achieve the purpose of vibration isolation support and sliding vibration reduction and energy consumption .

The invention mainly includes: upper and lower ring beams, steel balls, soft steel plates, lower pads and sand pads. Wherein, the lower ring beam is placed on the ground with the lower end surface, and the upper end surface is a circular ring with an arc-shaped groove with an upper opening in section, and the line connecting the center of the groove and the inner and outer ring surfaces of the ring are concentric circles. The upper ring beam corresponding to the lower ring beam, its lower end surface is a circular ring with a lower opening arc-shaped groove in section, and the lower opening arc-shaped groove on it has the same curvature as the upper opening arc-shaped groove on the lower ring beam. The upper and lower sides face each other, and several steel balls are arranged in the sandwiched space, and the diameter of the steel balls is greater than the length of the vertical line connecting the centers of the upper and lower grooves. On the inner ring surface of the upper and lower ring beams, there is a soft steel plate cylinder adjacent to the outer peripheral surface. The outer diameter corresponds to the inner diameter of the inner ring surface of the lower ring beam and is placed inside it. The lower end of the lower backing plate is placed on the ground, and a sand cushion is arranged on it. The height of the sand cushion can be determined according to the volume size of the vertical storage tank and the specific conditions of the shock isolation period. The sand cushion and the upper and lower ring beams form a new type of parallel isolation structure, which can provide damping for the device and achieve the purpose of energy dissipation. The rolling ring beam can provide a certain recovery stiffness for the device. , enhance the stability of the vertical storage tank, and avoid the tank from overturning or displacement; the rolling ring beam and the sand cushion can bear part of the weight of the storage tank respectively; in addition, the backing plate can adjust the settlement and The effect of uneven settlement.

Compared with the prior art, the present invention has the following advantages: it can improve the stability of the device, increase the shock absorption and energy consumption capacity of the device, and reduce the cost of the shock-isolation device; The device has recovery force, and the bearing capacity is improved, which reduces the requirement for sand cushion material. At the same time, the present invention is simple in structure, easy to obtain materials, simple in installation and construction, and low in cost; it has strong vertical pressure bearing capacity, good shock isolation effect, and has an instantaneous reset function, which can not only support the upper structure, but also isolate The purpose of earthquake input to the upper structure is to reduce damage to large vertical storage tanks caused by destructive earthquakes.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of the present invention in use.

Fig. 2 is a schematic diagram of the front section of the present invention.

Explanation of reference signs: 1-upper ring beam; 2-lower ring beam; 3-steel ball; 4-mild steel plate cylinder; 5-sand cushion; 6-lower backing plate; 7-vertical storage tank.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the schematic diagrams of the vertical storage tank ring beam rolling shock isolation device shown in Figure 1 and Figure 2, the lower end surface of the lower ring beam 2 is placed on the ground, and the upper end surface is an arc-shaped concave with an upper opening. The ring of the groove, and the line connecting the center of the groove and the inner and outer ring surfaces of the ring are concentric circles. The upper ring beam 1 corresponding to the lower ring beam, its lower end surface is a circular ring with a lower opening arc-shaped groove in section, and the lower opening arc-shaped groove on it has the same curvature as the upper opening arc-shaped groove on the lower ring beam And up and down are opposite, a plurality of steel balls 3 are arranged in the clamped space, and the diameter of the steel balls is greater than the length of the vertical line connecting the centers of the upper and lower grooves. On the inner ring surface of the upper and lower ring beams, there is a mild steel plate cylinder 4 adjacent to the outer peripheral surface. The outer diameter of the backing plate corresponds to the inner diameter of the inner ring surface of the lower ring beam and is placed inside it. The lower end of the lower backing plate is placed on the ground, and a sand cushion 5 is arranged on it.

Claims (1)

1. A ring beam rolling vibration isolation device for a vertical storage tank, characterized in that: the lower ring beam is placed on the ground with its lower end face, and the upper end face is a circular ring with an upper opening arc groove in section, and the center of the groove is The connecting line and the inner and outer ring surfaces of the ring are concentric circles, and the upper ring beam corresponding to the lower ring beam has a ring with a lower opening arc-shaped groove on its lower end surface, and the lower opening arc-shaped groove on it It has the same curvature as the arc-shaped groove of the upper opening on the lower ring beam and faces up and down. There are several steel balls in the sandwiched space, and the diameter of the steel ball is greater than the length of the vertical line connecting the centers of the upper and lower grooves. There is a soft steel plate cylinder adjacent to the outer peripheral surface, the upper end of the soft steel plate cylinder is higher than or equal to the upper end surface of the upper ring beam, and the lower end is placed on the lower backing plate, the outer diameter of the lower backing plate is the same as the inner ring of the lower ring beam The inner diameters of the surfaces are corresponding and placed in it, the lower end of the lower backing plate is placed on the ground, and a sand cushion is arranged on it.