阅读说明：本技术 桥梁间主梁静风三分力系数和表面风压的同步测量装置 (Synchronous measurement device for three-component static wind coefficient and surface wind pressure of main beam between bridges ) 是由 张翔 颜全胜 贾布裕 余晓琳 杨铮 方津 黄惠娟 白城宗 谢轩晨 于 2021-08-30 设计创作，主要内容包括：桥梁间主梁静风三分力系数和表面风压的同步测量装置,包括转盘组件；滑动组件,用以滑动及定位安装测力天平组件和桥梁模型组件；测力天平组件,用以对桥梁模型组件测力；桥梁模型组件,用以模拟试验桥梁模型或干扰桥梁模型；表面压强测量组件,用以对桥梁的表面压强进行测量；所述滑动组件设于转盘组件上,所述测力天平组件设于滑动组件上,所述桥梁模型组件和测力天平组件固定连接；所述表面压强测量组件设于转盘组件上,所属表面压强测量组件和桥梁模型组件连接。本发明具有可同时测量测量桥梁表面压强和测量桥梁间气动干扰效应、简化试验操作、节约试验操作时间、提升试验效率等优点。本发明属于风洞试验技术领域。(The synchronous measurement device for the three-component static wind coefficient and the surface wind pressure of the girder between the bridges comprises a turntable assembly; the sliding assembly is used for sliding and positioning and installing the force measuring balance assembly and the bridge model assembly; the force measuring balance assembly is used for measuring force of the bridge model assembly; the bridge model assembly is used for simulating a test bridge model or an interference bridge model; the surface pressure measuring assembly is used for measuring the surface pressure of the bridge; the sliding assembly is arranged on the turntable assembly, the force measuring balance assembly is arranged on the sliding assembly, and the bridge model assembly is fixedly connected with the force measuring balance assembly; the surface pressure measuring assembly is arranged on the turntable assembly and connected with the bridge model assembly. The invention has the advantages of simultaneously measuring the pressure intensity on the surface of the bridge and the pneumatic interference effect between the bridges, simplifying the test operation, saving the test operation time, improving the test efficiency and the like. The invention belongs to the technical field of wind tunnel tests.)

1. Three coefficient of force and the synchronous measuring device of surface wind pressure of girder calm wind between bridge, its characterized in that: the method comprises the following steps:

the rotary table component is used for driving the sliding component, the force measuring balance component and the bridge model component to rotate together with the rotary table component;

the sliding assembly is used for sliding and positioning and installing the force measuring balance assembly and the bridge model assembly;

the force measuring balance assembly is used for measuring force of the bridge model assembly;

the bridge model assembly is used for simulating a test bridge model or an interference bridge model;

the surface pressure measuring assembly is used for measuring the surface pressure of the bridge;

the sliding assembly is arranged on the turntable assembly, the force measuring balance assembly is arranged on the sliding assembly, and the bridge model assembly is fixedly connected with the force measuring balance assembly;

the surface pressure measuring assembly is arranged on the turntable assembly and connected with the bridge model assembly.

2. The synchronous measurement device for the three coefficients of static wind and surface wind pressure of the girder between the bridges according to claim 1, which is characterized in that: the surface pressure measurement assembly comprises a pressure measurement pipe, pressure measurement modules and an acquisition module, wherein one set of pressure measurement pipe and pressure measurement module corresponds to one bridge model assembly, and a plurality of pressure measurement modules are connected with one acquisition module; the pressure measuring module is arranged on the turntable assembly, one end of the pressure measuring pipe is connected with the pressure measuring module, and the other end of the pressure measuring pipe extends into the bridge model assembly and is connected with a pressure measuring hole in the bridge model assembly.

3. The synchronous measurement device for the three coefficients of static wind and surface wind pressure of the girder between the bridges according to claim 2, characterized in that: the rotary disc component comprises a rotary disc, a motor, an upper supporting plate and a lower supporting plate; the turntable is provided with a groove, the upper supporting plate and the lower supporting plate are sequentially arranged in the groove from top to bottom, and the upper supporting plate and the lower supporting plate are fixedly connected with the inside of the groove; the geometric center of the lower supporting plate is provided with an acquisition module, and the upper supporting plate is provided with a pressure measuring module; the pressure measuring module and the acquisition module are connected in a wireless/wired mode.

4. The synchronous measurement device of the three coefficients of force of girder calm wind and surface wind pressure between the bridge of claim 3, characterized in that: the turntable assembly further comprises a control system, and the motor and the acquisition module are connected with the control system.

5. The synchronous measurement device of the three coefficients of force of girder calm wind and surface wind pressure between the bridge of claim 3, characterized in that: the sliding assembly comprises a rail system; the track system is arranged on an upper supporting plate of the turntable assembly, track nodes with the same number as the bridge model assemblies are arranged on the track system, and adjacent track nodes are connected and communicated with each other.

6. The synchronous measurement device for the three coefficients of static wind and surface wind pressure of the girder between the bridges according to claim 5, characterized in that: the track node comprises a cross shaft track and a vertical shaft track, the cross shaft track and the vertical shaft track are crossed with each other, the cross shaft track and the vertical shaft track are communicated with each other at the crossed point, and the cross shaft track and the vertical shaft track are detachably connected with the supporting plate.

7. The synchronous measurement device of the three coefficients of force of girder calm wind and surface wind pressure between the bridge of claim 6, characterized in that: and scale marks are arranged on the transverse shaft track and the vertical shaft track.

8. The synchronous measurement device for the three coefficients of static wind and surface wind pressure of the girder between the bridges according to claim 1, which is characterized in that: the force measuring balance assembly comprises a base plate and a force measuring balance, two ends of the force measuring balance are fixedly connected with the base plate, the base plate at one end is fixedly connected with the bridge model assembly, and the base plate at the other end is connected with the sliding assembly.

9. The synchronous measurement device for the three coefficients of static wind and surface wind pressure of the girder between the bridges according to claim 1, which is characterized in that: the bridge model assembly comprises a bridge model compensation section and a bridge model body section, the bridge model compensation section is fixedly connected with the force measuring balance assembly, and the bridge model compensation section is detachably connected with the bridge model body section; and a row of pressure measuring holes are arranged on the bridge model compensation section at intervals.

10. The synchronous measurement device of the three coefficients of force of girder calm wind and surface wind pressure between the bridge of claim 9, characterized in that: the bridge model compensation section comprises a bridge compensation model, a lower end plate and a steel beam, the bridge compensation model is fixedly connected with the lower end plate, the steel beam penetrates through the lower end plate and the bridge compensation model, the steel beam is fixedly connected with the lower end plate and the bridge compensation model, and the lower end of the steel beam is fixedly connected with the force measuring balance assembly.

Technical Field

The invention belongs to the technical field of wind tunnel tests, and particularly relates to a synchronous measurement device for a dead wind three-component coefficient and surface wind pressure of a main beam between bridges in a wind tunnel test.

Background

With the rapid development of the traffic industry in China, the large-span bridge structure is spread all over the country, the wind-induced vibration problem of the bridge is common, and the wind-induced vibration problem of the large-span bridge is more prominent. Due to rapid development of economic society and higher traffic demand, the number of large-span bridges continues to increase, and some scenes begin to design two adjacent large-span bridges or even three adjacent large-span bridges. For adjacent large-span bridges, certain research is currently carried out on the pneumatic interference effect of the bridges. The existing pneumatic interference effect test device generally comprises a turntable, a force measuring balance, a force measuring bridge model and an interference bridge model, wherein the force measuring balance is arranged on the turntable, one end of the force measuring bridge model is fixedly connected with the force measuring balance on the turntable, the interference bridge model is parallelly arranged on one side of the force measuring bridge model to serve as an interference model, and the turntable is controlled to rotate by a far-end computer, so that the change of the relative attack angle between the double-amplitude bridge model and incoming wind can be realized, and the measurement of the pneumatic interference effect between bridges is completed. Meanwhile, the surface pressure of the bridge needs to be measured in the wind tunnel test, and the surface pressure and the pneumatic interference effect between the bridges need to be measured separately, so that the measurement work in the wind tunnel test is complicated, the measurement steps are multiple, and the test efficiency is reduced. Particularly, when the method is applied to the interference effect research among a plurality of bridge models (N is more than or equal to 3), the measurement of the bridge surface pressure and the bridge aerodynamic interference effect is more complicated, and the test efficiency is lower.

Disclosure of Invention

Aiming at the problems, the invention provides a synchronous measurement device for three static wind and three force coefficients and surface wind pressure of a main beam between bridges, and aims to solve the problem of low test efficiency caused by the fact that the conventional wind tunnel test device cannot simultaneously measure the surface pressure of the bridge and the pneumatic interference effect between the bridges.

Synchronous measuring device of three coefficient of force of quiet wind of girder and surface wind pressure between bridge includes:

the rotary table component is used for driving the sliding component, the force measuring balance component and the bridge model component to rotate together with the rotary table component;

the sliding assembly is used for sliding and positioning and installing the force measuring balance assembly and the bridge model assembly;

the force measuring balance assembly is used for measuring force of the bridge model assembly;

the bridge model assembly is used for simulating a test bridge model or an interference bridge model;

the surface pressure measuring assembly is used for measuring the surface pressure of the bridge;

the sliding assembly is arranged on the turntable assembly, the force measuring balance assembly is arranged on the sliding assembly, and the bridge model assembly is fixedly connected with the force measuring balance assembly;

the surface pressure measuring assembly is arranged on the turntable assembly and connected with the bridge model assembly.

Preferably, the surface pressure measurement assembly comprises a pressure measurement pipe, pressure measurement modules and an acquisition module, wherein one set of pressure measurement pipe and pressure measurement module corresponds to one bridge model assembly, and a plurality of pressure measurement modules are connected with one acquisition module; the pressure measuring module is arranged on the turntable assembly, one end of the pressure measuring pipe is connected with the pressure measuring module, and the other end of the pressure measuring pipe extends into the bridge model assembly and is connected with a pressure measuring hole in the bridge model assembly.

Preferably, the turntable assembly comprises a turntable, a motor, an upper supporting plate and a lower supporting plate; the turntable is provided with a groove, the upper supporting plate and the lower supporting plate are sequentially arranged in the groove from top to bottom, and the upper supporting plate and the lower supporting plate are fixedly connected with the inside of the groove; the geometric center of the lower supporting plate is provided with an acquisition module, and the upper supporting plate is provided with a pressure measuring module; the pressure measuring module and the acquisition module are connected in a wireless/wired mode.

Preferably, the turntable assembly further comprises a control system, and the motor and the acquisition module are connected with the control system.

Preferably, the sliding assembly comprises a rail system; the track system is arranged on an upper supporting plate of the turntable assembly, track nodes with the same number as the bridge model assemblies are arranged on the track system, and adjacent track nodes are connected and communicated with each other.

Preferably, the track nodes comprise a horizontal shaft track and a vertical shaft track, the horizontal shaft track and the vertical shaft track are crossed with each other, the horizontal shaft track and the vertical shaft track are communicated with each other at the crossed point, and the horizontal shaft track and the vertical shaft track are detachably connected with the supporting plate.

Preferably, the horizontal shaft track and the vertical shaft track are both provided with scale marks.

Preferably, the force measuring balance assembly comprises a base plate and a force measuring balance, two ends of the force measuring balance are fixedly connected with the base plate, the base plate at one end is fixedly connected with the bridge model assembly, and the base plate at the other end is connected with the sliding assembly.

Preferably, the bridge model assembly comprises a bridge model compensation section and a bridge model body section, the bridge model compensation section is fixedly connected with the force measuring balance assembly, and the bridge model compensation section is detachably connected with the bridge model body section; and a row of pressure measuring holes are arranged on the bridge model compensation section at intervals.

Preferably, the bridge model compensation section comprises a bridge compensation model, a lower end plate and a steel beam, the bridge compensation model is fixedly connected with the lower end plate, the steel beam penetrates through the lower end plate and the bridge compensation model, the steel beam is fixedly connected with the lower end plate and the bridge compensation model, and the lower end of the steel beam is fixedly connected with the force measuring balance assembly.

The invention has the advantages that:

firstly, the sliding assembly and the surface pressure measuring assembly are simultaneously arranged on the turntable assembly, and the sliding assembly is connected with the bridge model assembly through the force measuring balance assembly, so that the surface pressure of the bridge can be simultaneously measured when the pneumatic interference effect between the bridges is measured, the operation steps of a wind tunnel test are reduced, and the test efficiency is improved.

Secondly, the sliding assembly is arranged on the turntable assembly and comprises a rail system, so that the position of the force measuring balance assembly and the bridge model assembly can be conveniently adjusted on the rail system, namely the relative position of the bridge model assembly on the rail system is conveniently adjusted, and the force measuring balance assembly is fixed on the rail system through bolts and nuts after the position is adjusted, so that the position of the bridge model in the test is conveniently adjusted, the operation of adjusting the relative position of the bridge model is simplified, and a large amount of adjusting operation time is saved; meanwhile, the bridge model assembly comprises a bridge model compensation section and a bridge model body section, and the bridge model compensation section is detachably connected with the bridge model body section, so that the height of the bridge model can be easily adjusted in a test through simple disassembly and connection, and the time for adjusting the height of the bridge model is saved.

Based on the above, the invention has the advantages of simplifying test operation, saving test operation time, improving test efficiency and the like.

Drawings

Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the turntable removed according to an embodiment of the present invention.

FIG. 3 is a schematic structural view of an assembled force balance assembly, bridge model assembly and surface pressure measurement assembly according to an embodiment of the present invention.

Figure 4 is a perspective view of an assembled load cell balance assembly, bridge former assembly and surface pressure measurement assembly in accordance with an embodiment of the present invention.

FIG. 5 is a front view of an embodiment of the present invention.

Wherein:

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The application provides a synchronous measurement device of girder calm wind three-component coefficient and surface wind pressure between bridges, and the measurement device is used for a plurality of adjacent bridges calm wind three-component coefficient pneumatic interference effect tests in a wind tunnel test. Specifically, the measuring device comprises a turntable assembly, a sliding assembly, a force measuring balance assembly, a surface pressure measuring assembly and a bridge model assembly. And the turntable assembly is used for driving the sliding assembly, the force measuring balance assembly and the bridge model assembly to rotate together with the turntable assembly. And the sliding assembly is used for sliding and positioning and installing the force measuring balance assembly and the bridge model assembly. And the force measuring balance assembly is used for measuring force of the bridge model assembly. And the bridge model component is used for simulating a test bridge model and an interference bridge model in a test. The surface pressure measuring assembly is used for measuring the surface pressure of the bridge. The surface pressure measuring component is arranged on the turntable component and connected with the bridge model component. The sliding assembly is arranged on the turntable assembly and fixedly arranged on the turntable assembly; the force measuring balance assembly is arranged on the sliding assembly, can slide on the sliding assembly and is fixed on the sliding assembly after being positioned; the bridge model assembly is fixedly connected with the force measuring balance assembly. The sliding assembly and the surface pressure measuring assembly are arranged on the turntable assembly at the same time, and the sliding assembly is connected with the bridge model assembly through the force measuring balance assembly, so that the invention can measure the surface pressure of the measured bridge at the same time when measuring the pneumatic interference effect between the bridges, reduces the operation steps of the wind tunnel test and improves the test efficiency.

After the bridge model assembly and the force measuring balance assembly are fixedly connected, the position of the bridge model assembly on the sliding assembly can be adjusted and fixed through the movement and the positioning installation of the force measuring balance assembly on the sliding assembly. The force measuring balance assembly can slide on the sliding assembly, so that the relative position relationship between the test bridge model and the interference bridge model is changed, and after the relative position relationship between the test bridge model and the interference bridge model is adjusted, the sliding assembly and the force measuring balance assembly can be locked and fixed through bolts and nuts, so that the force measuring balance assembly and the bridge model assembly are fixed on the sliding assembly, and the force measuring balance assembly, the bridge model assembly and the sliding assembly can conveniently rotate along with the turntable; therefore, the test device is convenient for adjusting the position relation between the test bridge model and the interference bridge model, simplifies the operation steps of adjusting the relative position of the bridge model in the test process, saves the operation time and improves the test efficiency.

In this embodiment, the surface pressure measurement assembly includes a pressure measurement tube, a pressure measurement module, and an acquisition module. The pressure measuring pipe and the pressure measuring module correspond to one bridge model assembly, namely one pressure measuring pipe and one pressure measuring module are correspondingly arranged on one bridge model assembly; and the plurality of pressure measuring modules are connected with one acquisition module. The pressure measuring module is arranged on an upper supporting plate of the turntable assembly, and one end of the pressure measuring pipe is connected with the pressure measuring module. The other end of the pressure measuring pipe extends into the bridge model assembly from the bottom of the bridge model assembly and is connected with a pressure measuring hole in the bridge model assembly. The surface pressure measuring assembly transmits the measured surface pressure signal to the acquisition module, and the acquisition module transmits the signal to the control system. The pressure measuring module is electrically connected with the acquisition module; and the signal transmission between the two can also be realized through the communication connection of the wireless module.

In this embodiment, the carousel system includes carousel, motor, upper supporting plate and bottom plate, and the motor is connected with the carousel, and the motor drive carousel rotates, and slip subassembly, dynamometry balance subassembly, bridge model subassembly, surface pressure measurement subassembly rotate along with the carousel rotates. The motor and the turntable can adopt the existing components on the market, so that the motor drives the turntable, and the specific construction and the working principle of the motor and the turntable are not repeated in the application. The turntable is provided with a groove, the upper supporting plate and the lower supporting plate are sequentially arranged in the groove from top to bottom, and the upper supporting plate and the lower supporting plate are fixedly connected with the inside of the groove; the geometric center of the lower supporting plate is provided with an acquisition module, and the upper supporting plate is provided with a pressure measuring module; the pressure measuring module and the acquisition module are connected in a wireless/wired mode.

The bottom plate is fixed at the bottom of the groove, the upper plate is arranged in the middle of the groove, and two sides of the upper plate are welded with the inner wall of the groove. The acquisition module is fixed on the lower supporting plate. When the turntable rotates, the acquisition module, the pressure measuring module, the sliding assembly and the like rotate together with the turntable.

Further, the turntable system also comprises a control system. The sensor, the motor and the acquisition module are all connected with the control system. The sensor can be a speed measurement sensor and is used for measuring the speed of the rotary table; the control system can be a PLC, a microcomputer or the like. Specifically, the sensor determines the rotating speed of the turntable, the collected signals are transmitted to the control system, the collected surface pressure signals are transmitted to the control system by the collecting module, and the control system adjusts the rotating speed of the motor according to the preset program and the collected signals, so that the turntable system is in a working state required by a test, and further the bridge model is in various conditions required by the test.

The sensor, the acquisition module and the control system are electrically connected; the sensor and the acquisition module can also be in wireless connection with the control system, and the sensor and the acquisition module transmit signals to the control system in a wireless way.

In this embodiment, the slide assembly includes a rail system; the track system is arranged on the upper supporting plate. The track system is provided with track nodes with the same number as the bridge model components; and all adjacent track nodes are connected with each other and communicated with each other. For example, a test that three adjacent bridges need to be measured needs to be performed, the track system needs to be provided with three track nodes, each track node corresponds to one bridge model component, one bridge model component is firstly placed on the corresponding track node, and when the relative position of the bridge model component is adjusted, the bridge model component can slide on the track node. And because the track nodes are connected and communicated with each other, if the test needs, the bridge model component can slide to the adjacent track node by the track node so as to obtain the position required by the test.

Further, a preferred embodiment of the track node is embodied in that the single track node comprises a horizontal axis track and a vertical axis track, the horizontal axis track and the vertical axis track intersecting each other, and the horizontal axis track and the vertical axis track communicating with each other at the intersection. The crossing angle of the horizontal axis track and the vertical axis track can be set at will, and is specifically set according to test conditions; preferably, the crossing angle is 90 degrees in this embodiment, i.e. the horizontal axis track and the vertical axis track are disposed. When the position is adjusted, the force measuring balance assembly (the bridge model assembly is fixedly connected with the force measuring balance assembly, and the bridge model assembly slides at the moment) can slide along the horizontal shaft rail or the vertical shaft rail, so that the relative position of the bridge model is adjusted. The transverse shaft rail and the vertical shaft rail are detachably connected with the supporting plate, so that the force measuring balance assembly can slide along the transverse shaft rail and the vertical shaft rail when the transverse shaft rail, the vertical shaft rail and the supporting plate are not locked; after the position of the bridge model is adjusted, the transverse shaft rail/the vertical shaft rail are locked on the supporting plate through bolts and nuts, and the force measuring balance assembly is fixed on the sliding assembly, namely the bridge model assembly is fixed on the sliding assembly. Through the design of the cross shaft track and the vertical shaft track, the relative position of the bridge model can be conveniently adjusted, and the force measuring balance assembly can be easily and simply detached and fixed when the position is adjusted by using the connection mode of the cross shaft track, the vertical shaft track and the bolts and nuts. And scale marks are arranged on the transverse shaft track and the vertical shaft track. The scale marks are arranged on the transverse shaft track and the vertical shaft track, so that when the position is adjusted, the position adjusting distance or the length of the force measuring balance assembly (namely the bridge model assembly) can be conveniently read by observing the scales of the transverse shaft track and the vertical shaft track, and the complexity of test operation is simplified.

In this embodiment, the load cell balance assembly includes a backing plate and a load cell balance. The two ends of the force measuring balance are fixedly connected with the base plate, the base plate at one end is fixedly connected with the bridge model assembly, and the base plate at the other end is connected with the sliding assembly. The width of the pad plate should be greater than the distance between the transverse rail and the vertical rail to facilitate the sliding of the load cell balance with the pad plate on the rail nodes. For convenience of understanding, the two backing plates can be divided into an upper backing plate and a lower backing plate; the upper end of the force measuring balance is fixedly connected with an upper backing plate, and the upper backing plate is fixedly connected with the bridge model assembly; the lower end of the force measuring balance is fixedly connected with the lower backing plate, and the force measuring balance assembly is connected with the sliding assembly through the lower backing plate. Specifically, both sides of the lower backing plate are inserted between the horizontal shaft rail/vertical shaft rail and the supporting plate; when the bolt between the track node and the supporting plate is loosened, the force measuring balance assembly can slide between the track node and the supporting plate through the lower backing plate; after the position is adjusted, the bolts are locked, and then the track nodes and the force measuring balance assembly can be fixed on the supporting plate, so that the bridge model can be fixed on the turntable. Through the design cooperation of backing plate and track node, can easily realize the slip of dynamometry balance subassembly on sliding system and fixed to realize the position adjustment of bridge model subassembly, simplified the position adjustment operation of bridge model among the test process greatly, promoted test efficiency.

In this embodiment, the bridge model component includes a bridge model compensation section and a bridge model body section; the bridge model compensation section is fixedly connected with the force measuring balance assembly, and the bridge model compensation section is detachably connected with the bridge model body section. Through the detachable design of bridge model compensation section and bridge model itself section, when the height of bridge model needs to be adjusted, through dismantling bridge model itself section, again with new bridge model itself section install can. By the design, the operation of adjusting the height of the bridge model in the test process is greatly simplified, and the efficiency is greatly improved.

Further, the bridge model compensation section comprises a bridge compensation model, a lower end plate and a steel beam. The bridge compensation model is fixedly connected with the lower end plate, the steel beam penetrates through the lower end plate and the bridge compensation model, the steel beam is fixedly connected with the lower end plate and the bridge compensation model, and the lower end of the steel beam is fixedly connected with the force measuring balance assembly. The lower end of the steel beam is fixedly connected with the lower backing plate, so that the compensation section of the bridge model is fixedly connected with the force measuring balance. The upper end of the steel beam extends out of the bridge compensation model, and the length of the upper end of the steel beam is the same as that of the bridge model; the lengthened steel beam can pull up and stabilize the gravity center of the whole bridge model assembly; the test simulation is more vivid, and the accuracy of the test structure is improved.

Further, the bridge model comprises a bridge body and an upper end plate, the lower end of the bridge body is connected with the bridge compensation model, and the upper end of the bridge body is fixedly connected with the upper end plate. The bridge body is provided with pressure measuring holes which are arranged in a row, and the plane where the row of pressure measuring holes is arranged is parallel to the plane where the upper end plate is arranged; and a space is arranged between every two adjacent pressure measuring holes, namely the pressure measuring holes are arranged at intervals.

The working process of the device is further described in combination with the above measuring device: placing the turntable assembly on a plane; then the sliding component is installed on the supporting plate, namely the rail node is installed on the supporting plate; respectively assembling the bridge model compensation section and the force measuring balance assembly, and then fixedly connecting the assembled bridge model compensation section and the force measuring balance assembly; then the force measuring balance assembly is arranged on the track assembly, and the tightness of the bolt is adjusted, so that the force measuring balance assembly can slide along the track assembly; after the force measuring balance assembly is slid to a corresponding position, the bolts are screwed down to fix the rail nodes on the supporting plate, and then the force measuring balance assembly is fixed on the supporting plate; and then, installing a pressure measuring module on the upper supporting plate, connecting the pressure measuring pipe with the pressure measuring module, enabling the other end of the pressure measuring module to penetrate through the bridge model compensation section and extend into the bridge model assembly, buckling the bridge model body section on the bridge model compensation section, integrally arranging the installed and debugged device in a wind tunnel, operating a control system, and operating a motor by the control system to perform a test.

When the relative position of the bridge model needs to be adjusted in a test, the bolts are loosened, the distance between the transverse rail/vertical rail and the supporting plate is increased, the force measuring balance assembly is pushed to slide along the transverse rail/vertical rail, and the position adjustment of the force measuring balance and the bridge model is realized.

When the height of the bridge model needs to be adjusted in the test, the original bridge model section is disassembled, and the new bridge model section is connected with the bridge model compensation section, so that the height of the bridge model is adjusted.

When the method is used for measuring the pneumatic interference effect between the bridges, the surface pressure of the bridge can be measured simultaneously, the operation steps of wind tunnel tests are reduced, and the test efficiency is improved. Meanwhile, the track system is arranged and the bridge model assembly is divided into the bridge model compensation section and the bridge model body section, so that the height and the distance of the bridge model can be conveniently adjusted in the test process, the test operation complexity is reduced, and the test efficiency is improved.

It should be noted that the conditions, requirements, and steps of the wind tunnel test, and the determination methods of the three-component force coefficient of the static wind in the test are all knowledge available to those skilled in the art, and detailed description thereof is omitted here.

The application aims at a plurality of adjacent large-span bridges, and the number of the bridges is more than or equal to 2; in the prior art, a device for testing the aerodynamic interference effect of three dead wind three-force coefficient of three adjacent large-span bridges does not exist, so that the method is more suitable for testing the aerodynamic interference effect of three adjacent large-span bridges; the method is also applicable to two adjacent large-span bridges or more bridges; to two adjacent large-span bridges, the test of the device in the prior art is simpler and more accurate.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.