Fine adjustment device for pre-embedded plate of shock insulation support

Abstract

The utility model discloses a fine adjustment device for an embedded plate of a shock insulation support, which comprises a bottom plate, a lower column pier reinforcing steel bar and the embedded plate which are sequentially arranged from bottom to top, a plurality of elevation reinforcing steel bars are arranged inside the lower column pier reinforcing steel bar, and a plurality of elevation fine adjustment components are arranged outside the lower column pier reinforcing steel bar; the elevation fine adjustment assembly comprises a nut and a screw screwed with the nut, the length of the screw is multiple times that of the nut, and the shape of the head of the screw is the same as that of the cross section of the nut. The fine adjustment device for the pre-embedded plate of the shock insulation support replaces a traditional steel bar rod to control the elevation of the pre-embedded plate of the shock insulation support, vertical fine adjustment is carried out through the nuts, the elevation of the pre-embedded plate is accurately controlled, operation is easy and convenient, construction efficiency is improved, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a fine-tuning device for a seismic isolation support embedded plate. Background Art

[0002] Earthquakes are one of the most serious natural disasters faced by human society. "Reducing earthquake disasters" has become a world concern. The research, development and application of seismic isolation technology have raised great urgency and necessity. Rubber pad seismic isolation technology is a popular new engineering seismic technology in the world. It "separates" the superstructure and the foundation by placing the seismic isolation bearing between the foundation and the superstructure, and acts as a soft connection with the ground. Through this technology, about 80% of the energy of the earthquake can be offset. For example, laminated rubber bearings (or seismic isolation rubber bearings, sandwich rubber pads, etc.). It is a structural member with small horizontal stiffness and large vertical stiffness. It can withstand large horizontal deformation and can be used as part of the load-bearing system.

[0003] At present, the mature and referenceable construction methods for the installation of seismic isolation bearings have not been formed in China, and there are various quality problems. According to the construction quality analysis, the difficulty and key points of the installation of seismic isolation bearings mainly lie in how to control the positioning accuracy and horizontal accuracy of the lower embedded steel plate.

[0004] In the prior art, the traditional method generally uses steel bars to control the elevation of the embedded plate of the seismic isolation bearing. However, this method strictly controls the top elevation of the steel bars in the early stage, and the elevation error of the embedded plate is within 5mm, which makes the operation difficult. Utility Model Content

[0005] The purpose of the utility model is to provide a fine-tuning device for an embedded plate of a seismic isolation bearing, which replaces the traditional steel bar to control the elevation of the embedded plate of the seismic isolation bearing, and can accurately control the elevation of the embedded plate by fine-tuning up and down through nuts. The operation is simple, the construction efficiency is improved, and the construction period is shortened.

[0006] To achieve the above-mentioned purpose, the utility model provides a fine-tuning device for a seismic isolation bearing embedded plate, comprising a bottom plate, a lower column pier steel bar and an embedded plate arranged in sequence from bottom to top, a plurality of elevation steel bar rods are arranged inside the lower column pier steel bar, and a plurality of elevation fine-tuning components are arranged outside the lower column pier steel bar;

[0007] The elevation fine-tuning assembly comprises a nut and a screw rod screwed together with the nut, the length of the screw rod is several times the length of the nut, and the shape of the head of the screw rod is the same as the cross section of the nut.

[0008] Preferably, the pitch of the screw is at least 2 mm.

[0009] Preferably, the nut is arranged around the top of the lower pier steel bar, the head of the screw is arranged above the nut, the screw and the embedded plate are arranged vertically, and the head of the screw fits against the lower surface of the embedded plate.

[0010] Preferably, the lower pier reinforcement includes a plurality of longitudinal bars and transverse bars, and the longitudinal bars and transverse bars are fixedly connected by stirrups.

[0011] Preferably, the nut is welded to the top of the longitudinal reinforcement.

[0012] Preferably, the bottom end of the elevation steel bar is in contact with the bottom plate, and the top end of the elevation steel bar is not higher than the top end of the lower column pier steel bar.

[0013] Preferably, a plurality of mounting holes are provided on the surface of the embedded plate.

[0014] Therefore, the utility model adopts the above-mentioned fine-tuning device of the embedded plate of the seismic isolation bearing to replace the traditional steel bar to control the elevation of the embedded plate of the seismic isolation bearing. The up and down fine-tuning is performed through the nut to accurately control the elevation of the embedded plate. The operation is simple and overcomes the disadvantage that the elevation steel bar cannot be moved up and down to adjust the elevation, thereby improving construction efficiency and shortening construction period.

[0015] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment of a fine-tuning device for a seismic isolation support embedded plate of the utility model;

[0017] Figure 2 It is a structural schematic diagram of an elevation fine-tuning assembly of an embodiment of a fine-tuning device for a seismic isolation support embedded plate of the utility model;

[0018] Figure 3 It is an overall schematic diagram of an embodiment of a fine-tuning device for a seismic isolation bearing embedded plate of the utility model.

[0019] Reference numerals

[0020] 1. Base plate; 2. Lower column pier reinforcement; 3. Embedded plate; 4. Mounting hole; 5. Nut; 6. Screw; 7. Longitudinal reinforcement; 8. Transverse reinforcement; 9. Stirrups; 10. Elevation reinforcement rod. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] As shown in the figure, a fine-tuning device for the embedded plate of the seismic isolation bearing includes a base plate 1, a lower column pier steel bar 2 and an embedded plate 3 arranged in sequence from bottom to top. A plurality of elevation steel bars 10 are arranged inside the lower column pier steel bar 2. The bottom end of the elevation steel bar 10 is in contact with the base plate 1, and the top end of the elevation steel bar 10 is not higher than the top end of the lower column pier steel bar 2. A plurality of elevation fine-tuning components are arranged outside the lower column pier steel bar 2 to accurately control the elevation of the embedded plate 3. A plurality of mounting holes 4 are arranged on the surface of the embedded plate 3, and the mounting holes 4 are used for connecting with the lower column pier steel bar 2 and installing the seismic isolation bearing.

[0024] The elevation fine-tuning assembly includes a nut 5 and a screw rod 6 screwed together with the nut 5. The length of the screw rod 6 is several times the length of the nut 5. The shape of the head of the screw rod 6 is the same as the cross-section of the nut 5. The pitch of the screw rod 6 is at least 2 mm.

[0025] Nuts 5 are arranged around the top of the lower column pier reinforcement 2, and at least one nut is arranged on each periphery of the lower column pier reinforcement 2. The head of the screw rod 6 is arranged above the nut 5, and the screw rod 6 is arranged vertically with the embedded plate 3, and the head of the screw rod 6 fits the lower surface of the embedded plate 3. The lower column pier reinforcement 2 includes a plurality of longitudinal bars 7 and transverse bars 8, and the longitudinal bars 7 and the transverse bars 8 are fixedly connected by stirrups 9, and the nut 5 is welded to the top of the longitudinal bars 7.

[0026] The construction process is:

[0027] S1. Locate the seismic isolation bearing on the upper concrete surface of the base plate 1, measure and lay out the anchor bars, measure and set the center line and make marks, and punch holes in the embedded plate 3 according to the design dimensions on the drawing;

[0028] S2, tie the lower column pier steel bar 2, and at the same time, place the elevation steel bar 10 in order inside the lower column pier steel bar 2, weld the nut 5 to the top of the longitudinal bar 7 of the lower column pier steel bar 2, and at the same time, install the screw 6 with the head facing upward in the nut 5 (at this time, the head of the screw 6 fits the top surface of the nut 5);

[0029] S3, use stirrups 9 to preliminarily fix the embedded plate 3 and the lower column pier steel bars 2 around to ensure that no horizontal displacement occurs;

[0030] S4, use measuring instruments to level and manually fine-tune the screw 6 up and down, repeat several times until the elevation error of the embedded plate 3 is within 5mm;

[0031] S5. Install the formwork and pour concrete. Before the concrete has finally set and reaches the strength requirement, remove the formwork, level the concrete surface, install the seismic isolation bearings, support the upper column pier steel bars, and pour concrete. After the formwork is removed, repair and maintain the paint on the seismic isolation bearings.

[0032] Therefore, the utility model adopts the above-mentioned fine-tuning device of the embedded plate of the seismic isolation bearing, which replaces the traditional steel bar to control the elevation of the embedded plate of the seismic isolation bearing. The up and down fine-tuning is performed through the nut to accurately control the elevation of the embedded plate. The operation is simple, the construction efficiency is improved, and the construction period is shortened.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A fine-tuning device for a seismic isolation bearing embedded plate, characterized in that: It includes a bottom plate, a lower column pier steel bar and an embedded plate arranged in sequence from bottom to top, a plurality of elevation steel bar rods are arranged inside the lower column pier steel bar, and a plurality of elevation fine-tuning components are arranged outside the lower column pier steel bar; The elevation fine-tuning assembly comprises a nut and a screw rod screwed together with the nut, the length of the screw rod is several times the length of the nut, and the shape of the head of the screw rod is the same as the cross section of the nut.

2. The fine-tuning device for the embedded plate of the seismic isolation support according to claim 1 is characterized in that: The pitch of the screw is at least 2 mm.

3. The fine-tuning device for the embedded plate of the seismic isolation support according to claim 1 is characterized in that: The nut is arranged around the top of the lower column pier steel bar, the head of the screw is arranged above the nut, the screw is arranged vertically to the embedded plate, and the head of the screw is in contact with the lower surface of the embedded plate.

4. The fine-tuning device for the embedded plate of the seismic isolation support according to claim 1 is characterized in that: The lower column pier reinforcement includes a plurality of longitudinal bars and transverse bars, and the longitudinal bars and transverse bars are fixedly connected by stirrups.

5. The fine-tuning device for the embedded plate of the seismic isolation support according to claim 4 is characterized in that: The nut is welded to the top of the longitudinal reinforcement.

6. The fine-tuning device for the embedded plate of the seismic isolation support according to claim 1 is characterized in that: The bottom end of the elevation steel bar is in contact with the bottom plate, and the top end of the elevation steel bar is not higher than the top end of the lower column pier steel bar.

7. The fine-tuning device for the seismic isolation bearing embedded plate according to claim 1 is characterized in that: The surface of the embedded plate is provided with a plurality of mounting holes.

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