A monitoring system for construction deformation of an ultra-long seismic isolation structure
By designing a detachable and installable monitoring system, multi-dimensional and accurate monitoring of the deformation of the seismic isolation structure was achieved, solving the problems of inflexible adjustment and single monitoring dimensions in existing technologies, and improving data accuracy and seismic performance of the seismic isolation structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
- Filing Date
- 2025-07-11
- Publication Date
- 2026-08-04
AI Technical Summary
Existing monitoring systems cannot flexibly adjust height and horizontal spacing, cannot accurately target key monitoring points of protective layer rubber or connecting plates, and the single monitoring dimension leads to data deviation and layout blind spots, affecting the seismic performance and service life of the seismic isolation structure.
A monitoring system for the construction deformation of an ultra-long seismic isolation structure was designed, including a detachable monitoring body. Through the adjustable design of the connecting mechanism, support mechanism and monitoring mechanism, multi-dimensional precise positioning is achieved, and the multi-directional deformation of the protective layer rubber and connecting plate is monitored to form a ring monitoring network.
It achieves multi-dimensional and precise monitoring, avoids blind spots in single-direction monitoring, improves data accuracy and the flexibility of the monitoring system, and ensures the seismic performance and service life of the seismic isolation structure.
Smart Images
Figure CN224593920U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a monitoring system for the deformation during the construction of an ultra-long seismic isolation structure. Background Technology
[0002] In the field of building engineering, ultra-long seismic isolation structures achieve a flexible connection between the structure and the foundation through seismic isolation bearings, thereby reducing the impact of seismic forces on the main structure. During the construction of seismic isolation bearings, due to the influence of concrete pouring loads, steel structure hoisting stresses, and environmental factors, the seismic isolation bearings may suffer various forms of structural damage, such as shear deformation of the protective layer rubber, eccentric displacement of the upper and lower connecting plates, and torsional deformation. If these damages are not monitored and controlled in a timely manner, they will directly affect the seismic performance and service life of the seismic isolation structure.
[0003] In existing technologies, monitoring systems for deformation during seismic isolation bearing construction mainly suffer from the following technical deficiencies:
[0004] Insufficient monitoring position adjustment capability: Traditional monitoring systems mostly use fixed installations, making it difficult to adapt to the monitoring needs of different specifications of seismic isolation bearings. The fixed-position monitoring mechanism cannot flexibly adjust the height and horizontal spacing, resulting in inaccurate alignment with key monitoring points of the protective layer rubber or connecting plate, causing data deviation.
[0005] Limited monitoring dimensions and blind spots in layout: Existing monitoring schemes usually only monitor a single direction (such as the vertical direction) of the seismic isolation bearing, and a single monitoring point cannot fully reflect the overall deformation state.
[0006] Based on this, this utility model proposes a monitoring system for the deformation during the construction of ultra-long seismic isolation structures. Utility Model Content
[0007] To solve the above-mentioned technical problems, this utility model provides a monitoring system for the construction deformation of ultra-long seismic isolation structures.
[0008] The technical solution adopted in this utility model is as follows:
[0009] A monitoring system for construction deformation of an ultra-long seismic isolation structure includes a monitoring body for monitoring whether the seismic isolation bearing has deformed. The monitoring body is detachably mounted on the lower connecting plate of the seismic isolation bearing and is equidistantly distributed around the central axis of the seismic isolation bearing. The monitoring body includes: a connecting mechanism detachably mounted on the side of the lower connecting plate of the seismic isolation bearing; a first support mechanism vertically fixed on the connecting mechanism; a first monitoring mechanism mounted on the first support mechanism with adjustable height for detecting the distance between itself and the outer rubber wall of the protective layer of the seismic isolation bearing; a second support mechanism horizontally mounted on the first support mechanism with adjustable height; and a second monitoring mechanism mounted on the second support mechanism with adjustable horizontal position for detecting the distance between itself and the upper or lower connecting plate of the seismic isolation bearing.
[0010] The connecting mechanism includes an L-shaped plate with connecting holes, and the side wall of the lower connecting plate of the seismic isolation bearing has corresponding screw holes. The L-shaped plate is installed on the lower connecting plate of the seismic isolation bearing by bolts.
[0011] The first support mechanism includes a first support plate, which is vertically and fixedly connected to the L-shaped plate. A sliding opening is provided on the first support plate along its long side.
[0012] The second support mechanism includes: a second support plate, on which a sliding opening is provided along its long side; and a screw, one end of which is fixedly connected to one end of the second support plate, the screw passing through the sliding opening and the second support plate being fixed to the first support plate by a nut.
[0013] The first monitoring mechanism includes: a base; a displacement sensor, which is fixedly installed on the base; a second screw, one end of which is fixedly connected to the base and the other end passes through the sliding opening and is fixed to the first support plate by a nut; and a buffer pad, which has a through hole through which the second screw passes, and the buffer pad is located between the first support plate and the base.
[0014] The second monitoring mechanism has the same structure as the first monitoring mechanism and is installed at the second sliding opening of the second support plate.
[0015] Both the first and second sliding joints are provided with scale lines.
[0016] The beneficial effects of this utility model are:
[0017] (1) The first monitoring unit is adjustable on the first support unit, the second support unit is adjustable on the first support unit, and the second monitoring unit is adjustable on the second support unit. Through the adjustable design, multi-dimensional precise positioning is achieved.
[0018] (2) A multi-directional monitoring layout is implemented by setting up a first monitoring mechanism and a second monitoring mechanism. The first monitoring mechanism is installed in the vertical direction and monitors the lateral spacing change of the outer wall of the protective layer rubber through displacement sensors to capture the shear deformation or lateral expansion of the rubber layer. The second monitoring mechanism is installed in the horizontal direction and monitors the plane spacing change of the upper and lower connecting plates to determine the out-of-plane displacement, eccentric deformation or torsional deformation of the connecting plates. At the same time, the monitoring body is distributed at equal angles (e.g., 90°, arranged in 4 groups) with the central axis of the seismic isolation bearing as the center to form a ring monitoring network and avoid blind spots in single-direction monitoring. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the monitoring system for construction deformation of the ultra-long seismic isolation structure and the connection with the seismic isolation bearing, according to an embodiment of the present invention.
[0020] Figure 2 A schematic diagram of the planar structure connecting the monitoring system for construction deformation of an ultra-long seismic isolation structure and the seismic isolation bearing, according to an embodiment of this utility model.
[0021] Figure 3 A schematic diagram of the overall structure of a monitoring system for construction deformation of an ultra-long seismic isolation structure according to an embodiment of this utility model;
[0022] Figure 4 This is a schematic diagram of the planar structure of a monitoring system for construction deformation of an ultra-long seismic isolation structure according to an embodiment of the present invention.
[0023] Explanation of reference numerals in the attached figures:
[0024] 10-Connecting mechanism, 11-L-shaped plate;
[0025] 20-First support mechanism, 21-First support plate, 22-Slide joint 1
[0026] 30-First monitoring mechanism, 31-Base, 32-Displacement sensor, 33-Screw 2, 34-Buffer pad;
[0027] 40 - Second support mechanism, 41 - Second support plate, 42 - Slide port two, 43 - Screw one;
[0028] 50 - Second monitoring agency;
[0029] 60 - graduation mark. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] like Figures 1-4 As shown in the figure, a monitoring system for construction deformation of an ultra-long seismic isolation structure according to an embodiment of the present invention may include a monitoring body for monitoring whether the seismic isolation bearing has deformed. The body is detachably installed on the lower connecting plate of the seismic isolation bearing and is distributed at equal angles with the central axis of the seismic isolation bearing as the center.
[0032] In a specific embodiment of this utility model, the monitoring body is provided in four groups, which are distributed at 90 degrees around the central axis of the seismic isolation bearing. Specifically, the upper connecting plate and the lower connecting plate of the seismic isolation bearing are square structures, and the monitoring body is installed at the center of the four sides of the lower connecting plate.
[0033] In this invention, the monitoring unit is installed as an independent module, and the number of units installed can be flexibly adjusted according to the size and shape of the seismic isolation bearing.
[0034] Specifically, the monitoring body may include a connecting mechanism 10, a first support mechanism 20, a first monitoring mechanism 30, a second support mechanism 40, and a second monitoring mechanism 50. The connecting mechanism 10 is detachably installed on the side of the lower connecting plate of the seismic isolation bearing; the first support mechanism 20 is vertically fixedly installed on the connecting mechanism 10; the first monitoring mechanism 30 is installed on the first support mechanism 20, and its height position on the first support mechanism 20 is adjustable, used to detect the distance between it and the outer rubber wall of the seismic isolation bearing's protective layer; the second support mechanism 40 is horizontally installed on the first support mechanism 20, and its height position on the first support mechanism 20 is adjustable; the second monitoring mechanism 50 is installed on the second support mechanism 40, and its horizontal position on the second support mechanism 40 is adjustable, used to detect the distance between it and the upper or lower connecting plate of the seismic isolation bearing.
[0035] like Figure 1 and Figure 3 As shown, in one embodiment of the present invention, the connecting mechanism 10 includes an L-shaped plate 11 with a connecting hole, and the side wall of the lower connecting plate of the seismic isolation bearing has a corresponding screw hole. The L-shaped plate 11 is installed on the lower connecting plate of the seismic isolation bearing by bolts.
[0036] The L-shaped plate 11 can be made of Q235B hot-rolled steel plate with a thickness of not less than 8mm, a tensile strength ≥375MPa, and a yield strength ≥235MPa, meeting the structural strength requirements under construction loads. The L-shaped plate 11 and the lower connecting plate of the seismic isolation bearing can be connected by M12×30 8.8 grade galvanized bolts. During installation, silicone sealant can be applied to the contact surfaces of the L-shaped plate 11 and the lower connecting plate to prevent moisture intrusion and bolt corrosion. In addition, spring washers can be equipped on the bolts and nuts, and the tightening torque should be controlled at 45-50N・m to ensure a stable connection under vibration conditions.
[0037] The L-shaped plate 11 is detachably connected to the lower connecting plate of the seismic isolation bearing, which facilitates rapid installation and disassembly during the construction phase, while also supporting the reuse of the monitoring system and reducing project costs.
[0038] like Figures 3-4 As shown, in one embodiment of this utility model, the first support mechanism 20 includes a first support plate 21, which is vertically and fixedly connected to the L-shaped plate 11. A sliding groove 22 is provided on the first support plate 21 along its long side. For example, the first support plate 21 is vertically welded to the horizontal side of the L-shaped plate 11 (the weld height is not less than 5mm).
[0039] like Figures 3-4 As shown, in one embodiment of the present invention, the second support mechanism 40 may include a second support plate 41 and a screw 43. The second support plate 41 has a sliding opening 42 along its long side. One end of the screw 43 is fixedly connected to one end of the second support plate 41. The screw 43 passes through the sliding opening 22 and the second support plate 41 is fixed to the first support plate 21 by a nut.
[0040] In addition, scale lines 60 are provided at both slide 1 22 and slide 2 42 for auxiliary positioning.
[0041] Both the first support plate 21 and the second support plate 41 are made of steel rectangular plates. The sliding groove is centered along the long side of the support plate and is machined by wire cutting, with a surface roughness Ra≤1.6μm. The sliding groove 22 and the second sliding groove 42 are etched with graduation lines 60 with a precision of 1mm on both sides. The graduation lines 60 are laser engraved to a depth of 0.3mm and filled with corrosion-resistant ink to ensure that they do not fade over long-term use.
[0042] When the height of the first monitoring mechanism 30 needs to be adjusted, loosen the nut on the screw 33, move the base 31 up and down along the slide 22, and tighten the nut to fix it in place. For example, when the reference line on the base 31 is aligned with the scale "50mm", it means that the vertical distance from the center of the displacement sensor 32 to the upper surface of the lower connecting plate is 50mm.
[0043] like Figures 3-4As shown, in one embodiment of this utility model, the first monitoring mechanism 30 may include a base 31, a displacement sensor 32, and a buffer pad 34. The displacement sensor 32 is fixedly installed on the base 31. A screw 33 is provided, with one end fixedly connected to the base 31 and the other end passing through a sliding opening 22 and fixed to the first support plate 21 by a nut. A through hole is provided on the buffer pad 34, through which the screw 33 passes, and the buffer pad 34 is located between the first support plate 21 and the base 31.
[0044] The displacement sensor 32 is a laser ranging type, for example, model ZDS02, with a measurement range of 0-500mm and an accuracy of ±0.1mm. The displacement sensor 32 can be fixed to the upper surface of the base 31 by countersunk screws. The second screw 33 passes through the sliding groove 22 and is welded to the base 31. The base 31 can be made of 304 stainless steel plate, and the second screw 33 is made of stainless steel bolts, used with anti-loosening nuts. The buffer pad 34 can be a hard neoprene rubber pad, used to isolate the sensor from interference by construction vibration. When the rubber protective layer of the seismic isolation bearing undergoes lateral deformation, the change in distance between the displacement sensor 32 and the outer wall of the protective rubber layer will be converted into an electrical signal in real time and transmitted to the field monitoring terminal via a data cable. During installation and commissioning, the data cable of the displacement sensor 32 is connected to the field acquisition instrument (sampling frequency 1 time / 10min) for zero-point calibration.
[0045] For high-humidity construction environments, displacement sensor 32 can also be waterproof (IP67 protection rating), and buffer pad 34 can be made of EPDM rubber.
[0046] like Figures 3-4 As shown, in one embodiment of this utility model, the second monitoring mechanism 50 has the same structure as the first monitoring mechanism 30 and is installed at the sliding opening 42 of the second support plate 41.
[0047] When adjusting the height of the second support mechanism 40, first loosen the nut, push the second support plate 41 up and down along the sliding joint 22, and then turn the nut to fix it in place after moving it to the corresponding position. At the same time, the horizontal position of the second monitoring mechanism 50 can be adjusted through the sliding joint 42. For example, when it is necessary to monitor the horizontal displacement of the upper connecting plate, adjust the second monitoring mechanism 50 to a position 100mm away from the edge of the upper connecting plate.
[0048] The second monitoring mechanism 50 is used to monitor the planar deformation of the upper or lower connecting plate. Taking the monitoring of the upper connecting plate as an example:
[0049] When construction loads (such as concrete pouring and steel structure hoisting) are applied to the seismic isolation bearings, the upper connecting plate may experience out-of-plane displacement perpendicular to the plate surface (such as upward or downward bulging). By monitoring changes in spacing, the vertical displacement of the upper connecting plate can be captured in real time. For example, a sudden decrease in spacing may indicate that the upper connecting plate is deformed downwards under load; if the spacing increases, it may be due to the release of internal stress in the bearing, causing the upper connecting plate to displace upwards.
[0050] Due to uneven distribution of construction loads or installation errors, seismic isolation bearings may experience eccentric deformation (i.e., relative offset between the upper and lower connecting plates). By comparing the spacing data of multiple monitoring bodies (such as four sets of second monitoring mechanisms 50 distributed at 90° angles), if the difference in spacing at different positions on the same horizontal plane exceeds the threshold, it can be determined that the seismic isolation bearing has experienced eccentric deformation. In this case, the load distribution or construction process needs to be adjusted.
[0051] In addition, the second monitoring unit 50 can also be used to monitor the distance between itself and the lower connecting plate, such as... Figure 2 As shown, the monitoring body has four sets. In each pair of symmetrically distributed monitoring bodies, one set can be set as the distance between the monitor and the upper connecting plate, and the other set can be set as the distance between the monitor and the lower connecting plate, making it more flexible in use. Furthermore, the four sets of monitoring bodies can be set at different vertical height positions and horizontal positions.
[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0053] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A monitoring system for construction deformation of an ultra-long seismic isolation structure, characterized in that, It includes a monitoring body for monitoring whether the seismic isolation bearing has deformed. It is detachably installed on the lower connecting plate of the seismic isolation bearing and is distributed at equal angles with the central axis of the seismic isolation bearing as the center. The monitoring entity includes: The connecting mechanism is detachably installed on the side of the lower connecting plate of the seismic isolation bearing; The first support mechanism is vertically and fixedly installed on the connecting mechanism; The first monitoring mechanism is installed on the first support mechanism and its height position on the first support mechanism is adjustable. It is used to detect the distance between itself and the outer wall of the rubber protective layer of the seismic isolation bearing. The second support mechanism is horizontally installed on the first support mechanism, and its height position on the first support mechanism is adjustable; The second monitoring mechanism is installed on the second support mechanism and its horizontal position on the second support mechanism is adjustable. It is used to detect the distance between itself and the upper or lower connecting plate of the seismic isolation bearing.
2. The monitoring system for construction deformation of ultra-long seismic isolation structures according to claim 1, characterized in that, The connecting mechanism includes an L-shaped plate with connecting holes, and the side wall of the lower connecting plate of the seismic isolation bearing has corresponding screw holes. The L-shaped plate is installed on the lower connecting plate of the seismic isolation bearing by bolts.
3. The monitoring system for construction deformation of ultra-long seismic isolation structures according to claim 2, characterized in that, The first support mechanism includes a first support plate, which is vertically and fixedly connected to the L-shaped plate. A sliding opening is provided on the first support plate along its long side.
4. The monitoring system for construction deformation of ultra-long seismic isolation structures according to claim 3, characterized in that, The second support mechanism includes: The second support plate has a sliding opening along its long side; A screw is provided, one end of which is fixedly connected to one end of the second support plate. The screw passes through the sliding opening and is used to fix the second support plate to the first support plate with a nut.
5. The monitoring system for construction deformation of ultra-long seismic isolation structures according to claim 4, characterized in that, The first monitoring agency includes: Base; A displacement sensor, which is fixedly mounted on the base; Screw 2, one end of which is fixedly connected to base 1, and the other end passes through slide 1 and is fixed to the first support plate by a nut; A buffer pad is provided, and a through hole is provided on the buffer pad. The screw passes through the through hole, and the buffer pad is located between the first support plate and the base.
6. The monitoring system for construction deformation of ultra-long seismic isolation structures according to claim 5, characterized in that, The second monitoring mechanism has the same structure as the first monitoring mechanism and is installed at the second sliding opening of the second support plate.
7. The monitoring system for construction deformation of ultra-long seismic isolation structures according to claim 6, characterized in that, Both the first and second sliding joints are provided with scale lines.