Design method of building viscous damper device

Abstract

The invention provides a design method of a building viscous damper device, and belongs to the technical field of building earthquake resistance, and the method comprises the following steps: obtaining building drawing data, constructing a building three-dimensional model and installing a sensor, simulating seismic waves to carry out impact vibration on the three-dimensional building model, detecting stress data, and designing a corresponding viscous damper device of a building. A mechanical model of the viscous damper device is established to obtain an improved viscous damper device, the improved viscous damper device is installed on the building three-dimensional model, then secondary vibration is conducted, the damping effect is detected, the viscous damper device is corrected according to the detected effect, and the final viscous damper device is obtained. According to the characteristics of each building, a viscous damper device is simulated and arranged, then vibration stress tests in different directions are carried out, then stress test data of the viscous damper device are detected, the corresponding viscous damper device is arranged according to the characteristics of the building, and the anti-seismic effect of the viscous damper device is the best.

Description

Technical Field

[0001] The invention relates to the technical field of building earthquake resistance, and in particular to a design method for a building viscous damper device. Background Art

[0002] my country is a country prone to earthquakes. Several areas with relatively strong seismic activity include the Qinghai-Tibet Plateau and Yunnan, western Sichuan, Taihang Mountains in North China and the Beijing-Tianjin-Tangshan region, Xinjiang, Gansu, Ningxia, and coastal Fujian.

[0003] my country's earthquake-resistant technology can be divided into traditional earthquake-resistant technology and seismic isolation technology. Traditional earthquake-resistant technology increases the amount of building materials such as steel bars, concrete, and steel to enhance the strength of building structural components in order to achieve the effect of resisting earthquakes, but it is less economical and less safe.

[0004] Building seismic isolation technology is a new generation of seismic technology with excellent seismic performance. It can be divided into seismic isolation technology and seismic reduction technology. Different seismic isolation products are adopted according to factors such as the type, height, and location of the building. At present, my country still uses traditional seismic technology as the main measure. In recent years, with the introduction of policies such as the "Construction Engineering Seismic Management Regulations", the scope of mandatory use of building seismic isolation products has become more extensive, which has promoted the development of building seismic isolation technology. Therefore, in order to improve the seismic effect of buildings, it is necessary to design a design method for building viscous damper devices. Summary of the invention

[0005] The purpose of the present invention is to provide a design method for a building viscous damper device, so as to solve the technical problem that the traditional earthquake-resistant technology increases the amount of building materials such as steel bars, concrete, and steel to enhance the strength of building structural components to achieve the effect of resisting earthquakes, but has poor economic efficiency and low safety. The traditional building viscous damper device cannot directly test the building viscous damper, and cannot verify and evaluate the effect of the building viscous damper. The design method is designed according to the actual mathematical model of the building, and finally tests the earthquake-resistant effect.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A design method for a building viscous damper device, the method comprising the following steps:

[0008] Step 1: Obtain architectural drawing data and extract architectural drawing parameters and corresponding contour data;

[0009] Step 2: Build a three-dimensional building model and install a set of vibration force sensors to simulate earthquake waves to impact and vibrate the three-dimensional building model;

[0010] Step 3: Detect the stress points and failure points of the three-dimensional building model, and design the corresponding viscous damper device of the building according to the stress points and failure points;

[0011] Step 4: Establish a mechanical model of the viscous damper device, analyze the performance parameters and influencing factors, and make improvements based on the performance parameters and influencing factors to obtain an improved viscous damper device;

[0012] Step 5: Install the improved viscous damper device on the three-dimensional building model, and then input simulated earthquake waves to vibrate the three-dimensional building for the second time to detect the shock absorption effect of the improved viscous damper device;

[0013] Step 6: According to the detection results, the viscous damper device is modified to obtain the viscous damper device of the corresponding building.

[0014] Furthermore, in step 1, the drawings of an entire building are imported into the data extraction software, and the data in the drawings are extracted. The extracted data include the contour data inside and outside the building, the wall data, the concrete data, the steel bar composition data, the floor height data, the beam data and the column data. The extracted data can be placed in BIM to generate a three-dimensional building model.

[0015] Furthermore, in step 2, force sensors are set at the positions of lateral vibration stress in the three-dimensional building model to detect the magnitude of the force caused by lateral movement of the stress points. At least four stress points are set on each floor to realize lateral movement stress in the four directions of southeast, northwest, and northeast of the building. After simulating the input of seismic waves, the three-dimensional building model generates lateral sinusoidal vibration waves to vibrate and detect the stress points of the building. The sinusoidal vibration waves are initiated from at least four directions. Several data are collected for each input vibration wave, and then all the collected data are summarized to obtain force summary data.

[0016] Furthermore, in step 3, the force summary data of each sensor are sorted, and then the maximum force is compared with the lateral vibration resistance of the building. When the force data is greater than the seismic resistance data of the building, the point is determined to be a failure point, and one or more viscous damper devices must be installed at the failure point. According to the building type, viscous damper devices are set for all points where the corresponding force data is greater than the set value.

[0017] Further, in step 4, the viscous damper device includes an upper frame beam, a lower frame beam, an upper cantilever wall, a lower cantilever wall, a lower embedded part, an upper embedded part and a viscous damper, the upper cantilever wall is arranged at the bottom of the upper frame beam, the lower cantilever wall is arranged at the upper end of the lower frame beam, a gap is arranged between the upper cantilever wall and the lower cantilever wall, the lower embedded part is arranged on the lower cantilever wall, the upper embedded part is arranged on the upper cantilever wall, the viscous damper is arranged between the lower embedded part and the upper embedded part, and the viscous damper is arranged horizontally.

[0018] Further, the center lines of the upper cantilever wall and the lower cantilever wall are arranged on the same vertical line, and the lower end of the upper cantilever wall is arranged opposite to the upper end of the lower cantilever wall;

[0019] The lower embedded part and the upper embedded part both include a fixing plate and a plurality of embedded fixing strips. The fixing plate is provided with a plurality of through holes. The embedded fixing strips pass through the through holes and are embedded in the upper cantilever wall or the lower cantilever wall. The embedded fixing strips are fixed to the through holes by welding.

[0020] Further, node plates are respectively arranged between the viscous damper and the lower embedded part and the upper embedded part, the node plates are respectively fixed to the lower embedded part and the upper embedded part by bolts, and the node plates are connected to the viscous damper by a pin shaft;

[0021] The viscous damper is hinged to the node plate, and the two node plates are vertically arranged to the viscous damper.

[0022] Furthermore, in step 4, the design parameters of the viscous damper device are extracted, and then a three-dimensional model of the viscous damper device is constructed and fixed. The three-dimensional model of the viscous damper device sets data collection points, and the force data of the three-dimensional model of the viscous damper device under manual impact pressure is collected. A static loading test is used to control the loading system of the testing machine to make the foot damper move slowly and uniformly, and the limit displacement value of its telescopic operation is recorded. Then, the collected force data results and design parameters are used as variables, and the design parameters are continuously changed to obtain different force data. The optimal force data is selected, and then the corresponding optimal design parameters are reversed to obtain the corresponding optimal design parameters, and the viscous damper device is improved according to the optimal design parameters.

[0023] Furthermore, according to the type of building and the installation point of the viscous damper device in step 3, the three-dimensional model of the viscous damper device is installed on the three-dimensional model of the building, and then a simulated seismic wave is input. The simulated seismic wave adopts sinusoidal excitation, and the input displacement μ=μ1Sin(2nf t) that changes according to the sinusoidal wave law, f is the frequency applied by the damper, μ1 is the sinusoidal force of the displacement amplitude, t is time, n is a positive integer, and 5 consecutive cycles are performed. The maximum damping force corresponding to the third cycle is recorded as the measured value.

[0024] Furthermore, based on the detected shock-absorbing effect data, the direction of the viscous damper device is changed, and step 5 is repeated to obtain a number of detection data, and then the installation position of the viscous damper device with the best shock-absorbing effect is selected as the installation position of the viscous damper device of the corresponding building to obtain the viscous damper device of the corresponding building.

[0025] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0026] The present invention simulates and sets the viscous damper device according to the characteristics of each building, and then performs vibration stress tests in different directions, and then detects the data of the stress test of the viscous damper device. According to the characteristics of each building, the corresponding viscous damper device (including structure and installation position) is set, so that the anti-seismic effect of the viscous damper device is best. At the same time, the viscous damper device is set horizontally, and cantilever walls are vertically set at the upper and lower ends of the viscous damper. The cantilever wall is set integrally with the frame beam. When an earthquake occurs, the viscous damper will directly absorb the vibration of the lateral wave between the upper and lower frame beams, reduce the damage to the connecting column between the two frame beams, and play an anti-seismic effect. At the same time, the viscous damper is set as an exposed structure, which is convenient for installation and later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flow chart of the method of the present invention;

[0028] Figure 2 It is a schematic diagram of the side structure of the building viscous damper device of the present invention;

[0029] Figure 3 It is a schematic diagram of the side structure of the building viscous damper device of the present invention.

[0030] In the attached drawings, 1-upper frame beam, 2-lower frame beam, 3-frame column, 4-upper cantilever wall, 5-lower cantilever wall, 6-lower embedded parts, 7-upper embedded parts, 8-node plate, 9-viscous damper, 10-pin shaft. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0032] like Figure 1 As shown, a design method for a building viscous damper device comprises the following steps:

[0033] Step 1: Obtain architectural drawing data and extract architectural drawing parameters and corresponding contour data. Import the drawings of an entire building into the data extraction software and extract the data in the drawings. The extracted data includes the contour data inside and outside the building, wall data, concrete data, steel bar composition data, floor height data, beam data and column data. The extracted data can be put into BIM to generate a three-dimensional building model.

[0034] Step 2: Build a three-dimensional building model and install a set of vibration force sensors to simulate the impact and vibration of the three-dimensional building model by earthquake waves. Force sensors are set at the positions of the lateral vibration force in the three-dimensional building model to detect the magnitude of the force caused by the lateral movement of the force point. At least four force points are set on each floor to achieve lateral movement force in the four directions of the building, namely, southeast, northwest, and northeast. After simulating the input of earthquake waves, the three-dimensional building model generates lateral sinusoidal vibration waves to vibrate and detect the force points of the building. The sinusoidal vibration waves are initiated from at least four directions. A number of data are collected for each input vibration wave, and then all the collected data are summarized to obtain the force summary data.

[0035] Step 3: Detect the stress points and failure points of the 3D building model, and design the corresponding viscous damper device of the building according to the stress and failure points. Sort the force summary data of each sensor, and then judge the maximum force compared with the lateral vibration resistance of the building. When the force data is greater than the seismic data of the building, the point is determined as a failure point, and one or more viscous damper devices must be installed at the failure point. According to the building category, the points where the corresponding force data is greater than the set value are set with viscous damper devices.

[0036] Step 4: Establish a mechanical model of the viscous damper device, analyze the performance parameters and influencing factors, and make improvements based on the performance parameters and influencing factors to obtain an improved viscous damper device.

[0037] like Figure 2-3 As shown, the viscous damper device includes an upper frame beam 1, a lower frame beam 2, an upper cantilever wall 4, a lower cantilever wall 5, a lower embedded part 6, an upper embedded part 7 and a viscous damper 9. The upper cantilever wall 4 is arranged at the bottom of the upper frame beam 1, the lower cantilever wall 5 is arranged at the upper end of the lower frame beam 2, a gap is arranged between the upper cantilever wall 4 and the lower cantilever wall 5, the lower embedded part 6 is arranged on the lower cantilever wall 5, the upper embedded part 7 is arranged on the upper cantilever wall 4, the viscous damper 9 is arranged between the lower embedded part 6 and the upper embedded part 7, and the viscous damper 9 is arranged horizontally. The upper frame beam 1 and the upper cantilever wall 4 are integrally arranged by reinforced concrete, and the lower frame beam 2 and the lower cantilever wall 5 are integrally arranged by reinforced concrete. The interval between the upper cantilever wall 4 and the lower cantilever wall 5 is 400 mm. The lower end of the lower cantilever wall 5 is one floor height to the upper end of the upper frame beam 1.

[0038] When an earthquake occurs, due to the destruction of lateral waves, the upper frame beam 1 and the lower frame beam 2 move horizontally, destroying the columns between the upper frame beam 1 and the lower frame beam 2. However, since the viscous damper 9 is arranged between the upper frame beam 1 and the lower frame beam 2, it is able to absorb the lateral destructive energy and achieve an earthquake-resistant effect.

[0039] The center lines of the upper cantilever wall 4 and the lower cantilever wall 5 are arranged on the same vertical line, and the lower end of the upper cantilever wall 4 is arranged opposite to the upper end of the lower cantilever wall 5. By arranging them at the same relative positions in the numerical direction, the viscous damper 9 will be squeezed when a slight deviation occurs, so that the lateral force is first transmitted to the viscous damper 9, and the anti-seismic effect is better. The components of this structure are not numbered, but from Figure 1 As can be seen from the content in, the bottom of the embedded fixing strip is also provided with a tensile transverse block to prevent the embedded fixing strip from being pulled out and increase the stability of the embedded part 6. By welding the embedded fixing strip through the perforations of the fixing plate, the lateral force is better.

[0040] The lower embedded part 6 and the upper embedded part 7 each include a fixing plate and a plurality of embedded fixing strips. The fixing plate is provided with a plurality of through holes. The embedded fixing strips pass through the through holes and are embedded in the upper cantilever wall 4 or the lower cantilever wall 5. The embedded fixing strips are fixed by welding to the through holes. A node plate 8 is provided between the viscous damper 9 and the lower embedded part 6 and the upper embedded part 7, respectively. The node plate 8 is fixed to the lower embedded part 6 and the upper embedded part 7 by bolts, respectively. The node plate 8 is connected to the viscous damper 9 by a pin 10. The viscous damper 9 and the node plate 8 are arranged to be hinged, and the two node plates 8 are arranged vertically to the viscous damper 9.

[0041] The number of bolts is set according to the force requirements. Through the vertical setting, when the upper cantilever wall 4 and the lower cantilever wall 5 move vertically, the viscous damper 9 is not subjected to force. During vertical movement, the viscous damper 9 and the node plate 8 can rotate, but when the upper cantilever wall 4 and the lower cantilever wall 5 move laterally, the node plate 8 and the viscous damper 9 cannot move, thereby achieving earthquake resistance.

[0042] The viscous damper 9 includes a pin head, a piston rod protective shell, an oil cylinder, a piston rod, a piston and a bushing. The pin heads are arranged at both ends. One end of the piston rod protective shell is connected to the pin head at one end, the other end of the piston rod protective shell is connected to the oil cylinder, the bushing is connected to the pin head at the other end, the piston rod is arranged in the piston rod protective shell, and the piston is arranged on the piston rod.

[0043] The design parameters of the viscous damper device are extracted, and then a three-dimensional model of the viscous damper device is constructed and fixed. The data collection points are set on the three-dimensional model of the viscous damper device to collect the force data of the three-dimensional model of the viscous damper device under manual impact pressure. A static loading test is performed, and the loading system of the testing machine is controlled to make the damper move slowly and uniformly, and the limit displacement value of its telescopic operation is recorded. Then, the collected force data results and design parameters are used as variables, and the design parameters are continuously changed to obtain different force data. The optimal force data is selected, and then the corresponding optimal design parameters are reversed to obtain the corresponding optimal design parameters. The viscous damper device is improved according to the optimal design parameters.

[0044] Step 5: Install the improved viscous damper device on the three-dimensional model of the building, and then input the simulated seismic wave to vibrate the three-dimensional building for the second time to detect the shock absorption effect of the improved viscous damper device. According to the type of the building and the installation point of the viscous damper device in step 3, install the three-dimensional model of the viscous damper device on the three-dimensional model of the building, and then input the simulated seismic wave. The simulated seismic wave adopts sinusoidal excitation, and the input displacement μ=μ1Sin(2nft) that changes according to the law of sinusoidal waves, f is the frequency applied by the damper, μ1 is the sinusoidal force of the displacement amplitude, t is time, n is a positive integer, and 5 consecutive cycles are performed. The maximum damping force corresponding to the third cycle is recorded as the measured value.

[0045] Step 6: According to the detection effect, the viscous damper device is modified to obtain the viscous damper device of the corresponding building. According to the detected damping effect data, the direction of the viscous damper device is changed, and step 5 is repeated to obtain several detection data, and then the installation position of the viscous damper device with the best damping effect is selected as the installation position of the viscous damper device of the corresponding building to obtain the viscous damper device of the corresponding building.

[0046] According to the characteristics of each building, a viscous damper device is simulated and set up, and then vibration stress tests are carried out in different directions. The data of the viscous damper device stress test is then detected. According to the characteristics of each building, a corresponding viscous damper device (including structure and installation position) is set up to achieve the best anti-seismic effect of the viscous damper device.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A design method for a building viscous damper device, characterized in that: The method comprises the following steps: Step 1: Obtain architectural drawing data and extract architectural drawing parameters and corresponding contour data; Step 2: Build a three-dimensional building model and install a set of vibration force sensors to simulate earthquake waves to impact and vibrate the three-dimensional building model; Step 3: Detect the stress points and failure points of the three-dimensional building model, and design the corresponding viscous damper device of the building according to the stress points and failure points; Step 4: Establish a mechanical model of the viscous damper device, analyze the performance parameters and influencing factors, and make improvements based on the performance parameters and influencing factors to obtain an improved viscous damper device; Step 5: Install the improved viscous damper device on the three-dimensional building model, and then input simulated earthquake waves to vibrate the three-dimensional building for the second time to detect the shock absorption effect of the improved viscous damper device; Step 6: According to the detection result, the viscous damper device is modified to obtain the viscous damper device of the corresponding building.

2. The design method of the building viscous damper device according to claim 1, characterized in that: In step 1, the drawings of an entire building are imported into the data extraction software to extract the data in the drawings. The extracted data include the contour data inside and outside the building, wall data, concrete data, steel bar composition data, floor height data, beam data and column data. The extracted data can be placed in BIM to generate a three-dimensional building model.

3. The design method of the building viscous damper device according to claim 1, characterized in that: In step 2, force sensors are set at the positions of lateral vibration stress in the three-dimensional building model to detect the size of the force caused by lateral movement of the stress point. At least four stress points are set on each floor to realize lateral movement stress in the four directions of southeast, northwest and northeast of the building. After simulating the input of seismic waves, the three-dimensional building model generates lateral sinusoidal vibration waves to vibrate and detect the stress points of the building. The sinusoidal vibration waves are initiated from at least four directions. Several data are collected for each input vibration wave, and then all the collected data are summarized to obtain the force summary data.

4. The design method of the building viscous damper device according to claim 3 is characterized in that: In step 3, the force summary data of each sensor are sorted, and then the maximum force is compared with the lateral vibration resistance of the building. When the force data is greater than the seismic data of the building, the point is determined to be a failure point. One or more viscous damper devices must be installed at the failure point. According to the building type, viscous damper devices are set for all points where the corresponding force data is greater than the set value.

5. The design method of a building viscous damper device according to claim 1, characterized in that: In step 4, the viscous damper device comprises an upper frame beam (1), a lower frame beam (2), an upper cantilever wall (4), a lower cantilever wall (5), a lower embedded part (6), an upper embedded part (7) and a viscous damper (9), wherein the upper cantilever wall (4) is arranged at the bottom of the upper frame beam (1), the lower cantilever wall (5) is arranged at the upper end of the lower frame beam (2), a gap is arranged between the upper cantilever wall (4) and the lower cantilever wall (5), the lower embedded part (6) is arranged on the lower cantilever wall (5), the upper embedded part (7) is arranged on the upper cantilever wall (4), the viscous damper (9) is arranged between the lower embedded part (6) and the upper embedded part (7), and the viscous damper (9) is arranged horizontally.

6. The design method of the building viscous damper device according to claim 5, characterized in that: The center lines of the upper cantilever wall (4) and the lower cantilever wall (5) are arranged on the same vertical line, and the lower end of the upper cantilever wall (4) is arranged opposite to the upper end of the lower cantilever wall (5); The lower embedded part (6) and the upper embedded part (7) both comprise a fixing plate and a plurality of embedded fixing strips. The fixing plate is provided with a plurality of through holes. The embedded fixing strips pass through the through holes and are embedded in the upper cantilever wall (4) or the lower cantilever wall (5). The embedded fixing strips are fixed to the through holes by welding.

7. The design method of the building viscous damper device according to claim 6, characterized in that: A node plate (8) is arranged between the viscous damper (9) and the lower embedded part (6) and the upper embedded part (7), respectively. The node plate (8) is fixed to the lower embedded part (6) and the upper embedded part (7) by bolts, and the node plate (8) and the viscous damper (9) are connected by a pin shaft (10); The viscous damper (9) and the node plate (8) are arranged to be hinged, and the two node plates (8) are arranged vertically to the viscous damper (9).

8. The design method of a building viscous damper device according to claim 1, characterized in that: In step 4, the design parameters of the viscous damper device are extracted, and then a three-dimensional model of the viscous damper device is constructed and fixed. The three-dimensional model of the viscous damper device sets data collection points, and the force data of the three-dimensional model of the viscous damper device under manual impact pressure is collected. A static loading test is used to control the loading system of the testing machine to make the foot damper move slowly and uniformly, and the limit displacement value of its telescopic operation is recorded. Then, the collected force data results and design parameters are used as variables, and the design parameters are continuously changed to obtain different force data. The optimal force data is selected, and then the corresponding optimal design parameters are reversed to obtain the corresponding optimal design parameters. The viscous damper device is improved according to the optimal design parameters.

9. The design method of a building viscous damper device according to claim 1, characterized in that: According to the type of building and the installation point of the viscous damper device in step 3, the three-dimensional model of the viscous damper device is installed on the three-dimensional model of the building, and then the simulated seismic wave is input. The simulated seismic wave adopts sinusoidal excitation and the input displacement μ=μ1Sin(2nf t) that changes according to the sinusoidal wave law, f is the frequency applied by the damper, μ1 is the sinusoidal force of the displacement amplitude, t is time, n is a positive integer, and 5 consecutive cycles are performed. The maximum damping force corresponding to the third cycle is recorded as the measured value.

10. The design method of a building viscous damper device according to claim 1, characterized in that: According to the detected shock absorption effect data, the direction of the viscous damper device is then changed, and step 5 is repeated to obtain several detection data. Then, the installation position of the viscous damper device with the best shock absorption effect is selected as the installation position of the viscous damper device of the corresponding building, and the viscous damper device of the corresponding building is obtained.

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