CN116499957B - Experimental device for simulating bridge under combined action of wind and sunlight - Google Patents
Experimental device for simulating bridge under combined action of wind and sunlight Download PDFInfo
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Abstract
Description
技术领域Technical Field
本发明涉及桥梁实验装置技术领域，尤其涉及一种模拟桥梁在风和日照共同作用下的实验装置。The invention relates to the technical field of bridge experimental devices, and in particular to an experimental device for simulating a bridge under the combined effects of wind and sunshine.
背景技术Background Art
桥梁在正常使用状态下承受复杂时变的温度作用，桥梁结构的温度场不仅与地理位置、环境气温、雨雪寒潮气候现象、局部风场、太阳辐射与遮挡关系等众多因素相关，同时还会受到辐射、对流与热传导等作用的影响。针对于此，除了在现场进行相关试验，设计发明一种能够在实验室进行模拟实验的装置显得尤为重要。Bridges are subject to complex and time-varying temperature effects under normal use. The temperature field of the bridge structure is not only related to many factors such as geographical location, ambient temperature, rain, snow and cold wave climate phenomena, local wind field, solar radiation and shielding relationship, but also affected by radiation, convection and heat conduction. In view of this, in addition to conducting relevant tests on site, it is particularly important to design and invent a device that can conduct simulation experiments in the laboratory.
现有研究多为针对桥梁模拟其所受风场和温度场的数值方法，或者是单独考虑风场的实验装置，并没有一种同时考虑风场和温度场组合作用到桥梁的实验装置；Most existing studies focus on numerical methods for simulating the wind and temperature fields on bridges, or experimental devices that consider the wind field alone. There is no experimental device that considers the combined effects of wind and temperature fields on bridges at the same time.
在目前现有的技术方案中，如公开号为212363607U的中国发明，提出了一种可以方便安装模型、调节风偏角、对风洞无任何损伤、且对流场干扰小的实验装置，并没有把温度场的作用效果考虑在内；In the existing technical solutions, such as the Chinese invention with publication number 212363607U, an experimental device is proposed that can easily install the model, adjust the wind deflection angle, does not cause any damage to the wind tunnel, and has little interference with the flow field, but the effect of the temperature field is not taken into account;
与本申请最接近的公开号为105241773A的中国专利，考虑了日照、风、降雨的联合作用，但只着重强调了控制降雨量大小，而对于日照和风的调节并未做过多叙述。The Chinese patent with publication number 105241773A which is closest to the present application considers the combined effects of sunshine, wind and rainfall, but only emphasizes the control of rainfall amount, and does not elaborate on the regulation of sunshine and wind.
然而，日照和风对于桥梁的影响极大，桥梁受到日光的直接照射，紫外线和周围环境的辐射；由于桥梁横断面各部位受光的条件不同，因此温度也不同，而且是随时变化的。另外各部位受热后又不能自由伸缩，因而引起温度应力；同时在风和温度耦合作用下桥梁结构会产生不同响应；现有技术并未对于日照和风的作用进行组合研究，且现有技术并不能合理考虑自然条件多因素共同作用，以至于实验结果参考性较低；However, sunlight and wind have a great impact on bridges. Bridges are exposed to direct sunlight, ultraviolet rays and radiation from the surrounding environment. Since the light conditions of different parts of the bridge cross section are different, the temperature is also different and changes at any time. In addition, each part cannot expand and contract freely after being heated, which causes temperature stress. At the same time, the bridge structure will produce different responses under the coupling of wind and temperature. The existing technology has not conducted a combined study on the effects of sunlight and wind, and the existing technology cannot reasonably consider the combined effects of multiple factors of natural conditions, so that the reference value of the experimental results is low.
因此，本领域的技术人员致力于开发一种模拟桥梁在风和日照共同作用下的实验装置，设计一种能够实现桥梁在自然条件下的风、温度、辐射等因素作用的试验装置，并且可以很好地模拟这些因素在自然条件下的变化情况，以解决上述现有技术的不足。Therefore, technicians in this field are committed to developing an experimental device that simulates the combined effects of wind and sunlight on a bridge, and designing a test device that can realize the effects of wind, temperature, radiation and other factors on the bridge under natural conditions, and can well simulate the changes of these factors under natural conditions, so as to solve the shortcomings of the above-mentioned existing technologies.
发明内容Summary of the invention
有鉴于现有技术的上述缺陷，本发明所要解决的技术问题是目前现有公开的技术不能合理考虑自然条件多因素共同作用，以至于实验结果参考性较低的缺陷问题。In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the currently available disclosed technology cannot reasonably consider the combined effects of multiple factors of natural conditions, resulting in a defect that the experimental results have low reference value.
为实现上述目的，本发明提供了一种模拟桥梁在风和日照共同作用下的实验装置，包括桥梁模型、风模拟单元、日照模拟单元、地面反射结构；所述桥梁模型安装于日照模拟单元中；所述地面反射结构连接日照模拟单元；所述风模拟单元位于桥梁模型、日照模拟单元、地面反射结构外侧部；To achieve the above object, the present invention provides an experimental device for simulating a bridge under the combined effects of wind and sunshine, comprising a bridge model, a wind simulation unit, a sunshine simulation unit, and a ground reflection structure; the bridge model is installed in the sunshine simulation unit; the ground reflection structure is connected to the sunshine simulation unit; the wind simulation unit is located outside the bridge model, the sunshine simulation unit, and the ground reflection structure;
进一步地，所述风模拟单元包括鼓风机；所述鼓风机朝向桥梁模型、日照模拟单元、地面反射结构位置设置；所述鼓风机的风力风速大小、风向角可调，借此模拟出自然环境下风对桥梁的静力作用，动力作用，同时反映出桥梁的风压值变化，作用于不同位置的风力对于桥梁的作用效果；Furthermore, the wind simulation unit includes a blower; the blower is arranged toward the bridge model, the sunshine simulation unit, and the ground reflection structure; the wind force, wind speed, and wind direction of the blower are adjustable, thereby simulating the static and dynamic effects of wind on the bridge in a natural environment, and reflecting the changes in the wind pressure value of the bridge, and the effects of wind acting at different positions on the bridge;
进一步地，所述日照模拟单元包括日照模拟框架、日照模拟灯、日照模拟滑轮；所述日照模拟灯通过日照模拟滑轮安装于日照模拟框架上；Furthermore, the sunlight simulation unit includes a sunlight simulation frame, a sunlight simulation lamp, and a sunlight simulation pulley; the sunlight simulation lamp is installed on the sunlight simulation frame through the sunlight simulation pulley;
进一步地，所述日照模拟框架包括圆形框架、弧形框架；所述弧形框架呈拱形，模拟太阳运动轨迹；所述弧形框架两端通过轨道滑轮连接于圆形框架上，依据轨道滑轮的运动可使弧形框架进行圆周运动；Furthermore, the sunlight simulation frame includes a circular frame and an arc frame; the arc frame is arched to simulate the movement trajectory of the sun; both ends of the arc frame are connected to the circular frame through track pulleys, and the arc frame can perform circular motion according to the movement of the track pulleys;
进一步地，所述日照模拟灯包括多种光照强度，可模拟多种直射温度，实现太阳光模拟；Furthermore, the sunlight simulation lamp includes a variety of light intensities, which can simulate a variety of direct temperatures to achieve sunlight simulation;
进一步地，所述日照模拟滑轮包括三个小滑轮、三角架；所述三角架为三棱柱形状的框架，其三根侧棱上安装三个小滑轮；所述其中两个小滑轮设于弧形框架外侧，并位于同一平面；余下一个小滑轮位于弧形框架内侧，弧形框架从三个小滑轮中间位置穿过并与小滑轮完美贴合，小滑轮外轮廓弧度贴合弧形框架弧度，可实现小滑轮自身转动和带动整体在杆上滑动，所述设于内侧的三角架顶点处延伸一部分直杆，顶部安装日照模拟灯；Further, the sunlight simulation pulley includes three small pulleys and a tripod; the tripod is a triangular prism-shaped frame, and three small pulleys are installed on its three side edges; two of the small pulleys are arranged on the outside of the arc-shaped frame and are located in the same plane; the remaining small pulley is located on the inside of the arc-shaped frame, and the arc-shaped frame passes through the middle of the three small pulleys and fits perfectly with the small pulley. The curvature of the outer contour of the small pulley fits the curvature of the arc-shaped frame, which can realize the rotation of the small pulley itself and drive the whole to slide on the rod. A part of the straight rod is extended from the vertex of the tripod arranged on the inside, and a sunlight simulation lamp is installed on the top;
进一步地，所述轨道滑轮包括三个小滑轮、三角架；所述三角架为三棱柱形状的框架，其三根侧棱上安装三个小滑轮；其中两个小滑轮设于圆形框架上端，并位于同一平面，余下一个小滑轮位于圆形框架下端，圆形框架从三个小滑轮中间位置穿过并与小滑轮完美贴合，实现小滑轮自身转动和带动整体在杆上滑动，所述圆形框架上端两个三角架顶点位置分别延伸两条直杆连接弧形框架底端，使三角架与弧形框架一体成型；Further, the track pulley includes three small pulleys and a tripod; the tripod is a triangular prism-shaped frame, and three small pulleys are installed on its three side edges; two of the small pulleys are arranged at the upper end of the circular frame and are located in the same plane, and the remaining small pulley is located at the lower end of the circular frame, and the circular frame passes through the middle position of the three small pulleys and fits perfectly with the small pulleys, so that the small pulleys can rotate themselves and drive the whole to slide on the rod, and two straight rods are respectively extended from the two tripod vertices at the upper end of the circular frame to connect the bottom end of the arc frame, so that the tripod and the arc frame are formed as one piece;
进一步地，所述地面反射结构包括铺设的多层反射材料，该反射材料由多种反射率不同的材料组成，用于模拟自然土地的地表粗糙度；Furthermore, the ground reflection structure includes a laid multi-layer reflection material, which is composed of a plurality of materials with different reflectivity and is used to simulate the surface roughness of natural land;
进一步地，所述地面反射结构与日照系统框架通过多个竖直的支撑杆连接；所述支撑杆可伸缩；Furthermore, the ground reflection structure is connected to the sunlight system frame through a plurality of vertical support rods; the support rods are retractable;
进一步地，所述桥梁模型两端通过安装固定装置沿圆形框架任意直径位置安装固定；Furthermore, both ends of the bridge model are installed and fixed at any diameter position along the circular frame by means of installation and fixing devices;
进一步地，所述安装固定装置包括但不限于细线、铁丝、绳子；Furthermore, the mounting and fixing device includes but is not limited to thin wire, iron wire, and rope;
进一步地，还可在日照模拟灯旁设置加热装置，进行日照的温度补充模拟；Furthermore, a heating device may be arranged next to the sunlight simulation lamp to perform supplementary temperature simulation of sunlight;
进一步地，还可在桥梁模型旁设置加湿、除湿装置，进行日照的湿度模拟；Furthermore, humidification and dehumidification devices can be installed next to the bridge model to simulate the humidity of sunlight;
优选的，所述鼓风机功率低于100W；Preferably, the blower power is less than 100W;
优选的，所述圆形框架和弧形框架都是圆杆形结构；Preferably, the circular frame and the arc-shaped frame are both round rod-shaped structures;
优选的，所述小滑轮的滑动面为内凹结构，内凹结构的形状为半圆形，周径与圆形框架和圆形框架周径相同；Preferably, the sliding surface of the small pulley is a concave structure, the shape of the concave structure is semicircular, and the circumference is the same as the circumference of the circular frame;
在本发明具体实施方式中，所述地面反射结构包括一层反射材料；In a specific embodiment of the present invention, the ground reflective structure includes a layer of reflective material;
采用以上方案，本发明公开的模拟桥梁在风和日照共同作用下的实验装置，具有以下优点：By adopting the above scheme, the experimental device for simulating a bridge under the combined action of wind and sunshine disclosed in the present invention has the following advantages:
(1)本发明的模拟桥梁在风和日照共同作用下的实验装置，通过设置了日照模拟单元和地面反射结构，模拟了太阳温度场对于桥梁的影响，为设计者提供温度对于桥梁的影响数据，有助于分析解决目前存在的桥梁建设的温度问题；(1) The experimental device of the present invention simulates the effect of the solar temperature field on the bridge by setting up a sunshine simulation unit and a ground reflection structure, and provides the designer with data on the effect of temperature on the bridge, which is helpful for analyzing and solving the temperature problem of existing bridge construction.
(2)本发明的模拟桥梁在风和日照共同作用下的实验装置，通过侧边设置的鼓风机，以不同档位来调节风速大小，同时也可以调节风向角，借此模拟出自然环境下风对桥梁的静力作用，动力作用，同时反映出桥梁的风压值变化，作用于不同位置的风力对于桥梁的作用效果，为设计者在设计桥梁时提供了宝贵的实验数据，降低工程造价；(2) The experimental device of the present invention simulates the bridge under the combined effects of wind and sunshine. The wind speed is adjusted at different gears by the blower arranged on the side. The wind direction angle can also be adjusted. This simulates the static and dynamic effects of wind on the bridge in the natural environment. It also reflects the changes in the wind pressure value of the bridge and the effects of wind force at different positions on the bridge. This provides valuable experimental data for designers when designing bridges, thereby reducing the construction cost.
(3)本发明的模拟桥梁在风和日照共同作用下的实验装置，结构简单，制造成本低、应用性好；(3) The experimental device of the present invention for simulating a bridge under the combined effects of wind and sunlight has a simple structure, low manufacturing cost and good applicability;
综上所述，本发明公开的模拟桥梁在风和日照共同作用下的实验装置，通过设置了日照模拟单元和地面反射结构，模拟了太阳温度场对于桥梁的影响，为设计者提供温度对于桥梁的影响数据，有助于分析解决目前存在的桥梁建设的温度问题，通过侧边设置的鼓风机，以不同档位来调节风速大小，同时也可以调节风向角，借此模拟出自然环境下风对桥梁的静力作用、动力作用，同时反映出桥梁的风压值变化，作用于不同位置的风力对于桥梁的作用效果，为设计者在设计桥梁时提供了宝贵的实验数据，降低工程造价，结构简单，制造成本低、应用性好。In summary, the experimental device for simulating a bridge under the combined effects of wind and sunshine disclosed in the present invention simulates the influence of the solar temperature field on the bridge by setting up a sunshine simulation unit and a ground reflection structure, provides the designer with data on the influence of temperature on the bridge, and is helpful to analyze and solve the temperature problem currently existing in bridge construction. The wind speed can be adjusted in different gears by the blower arranged on the side, and the wind direction angle can also be adjusted, thereby simulating the static and dynamic effects of wind on the bridge in a natural environment, and reflecting the changes in the wind pressure value of the bridge, the effects of wind acting at different positions on the bridge, and providing the designer with valuable experimental data when designing the bridge, thereby reducing the project cost. The device has a simple structure, low manufacturing cost and good applicability.
以下将结合具体实施方式对本发明的构思、具体技术方案及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。The concept, specific technical scheme and technical effects of the present invention will be further described below in conjunction with specific implementation methods to fully understand the purpose, characteristics and effects of the present invention.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本发明一种模拟桥梁在风和日照共同作用下的实验装置结构示意图；FIG1 is a schematic diagram of the structure of an experimental device for simulating a bridge under the combined effects of wind and sunshine according to the present invention;
图2是本发明一种模拟桥梁在风和日照共同作用下的实验装置的轨道滑轮正面结构示意图；FIG2 is a schematic diagram of the front structure of a track pulley of an experimental device for simulating a bridge under the combined effects of wind and sunshine according to the present invention;
图3是本发明一种模拟桥梁在风和日照共同作用下的实验装置的轨道滑轮侧面结构示意图；FIG3 is a schematic diagram of the side structure of a track pulley of an experimental device for simulating a bridge under the combined effects of wind and sunshine according to the present invention;
图4是本发明一种模拟桥梁在风和日照共同作用下的实验装置的日照模拟灯、日照模拟滑轮、弧形框架正面结构连接示意图；4 is a schematic diagram of the connection of a sunshine simulation lamp, a sunshine simulation pulley, and a front structure of an arc frame of an experimental device for simulating a bridge under the combined effects of wind and sunshine according to the present invention;
图5是本发明一种模拟桥梁在风和日照共同作用下的实验装置的日照模拟灯、日照模拟滑轮、弧形框架侧面结构连接示意图；5 is a schematic diagram of the connection of a sunshine simulation lamp, a sunshine simulation pulley, and a side structure of an arc-shaped frame of an experimental device for simulating a bridge under the combined effects of wind and sunshine according to the present invention;
图中，1、鼓风机；2、日照模拟灯；3、日照模拟滑轮；4、轨道滑轮；5、圆形框架；6、地面反射结构；7、弧形框架；8、桥梁模型；9、小滑轮；10、三角架。In the figure, 1. blower; 2. sunlight simulation lamp; 3. sunlight simulation pulley; 4. track pulley; 5. circular frame; 6. ground reflection structure; 7. arc frame; 8. bridge model; 9. small pulley; 10. tripod.
具体实施方式DETAILED DESCRIPTION
以下介绍本发明的多个优选实施例，使其技术内容更加清楚和便于理解。本发明可以通过许多不同形式的实施例来得以体现，这些实施例为示例性描述，本发明的保护范围并非仅限于文中提到的实施例。The following introduces several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, which are exemplary descriptions, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.
如图1～5所示，一种模拟桥梁在风和日照共同作用下的实验装置，包括桥梁模型8、风模拟单元、日照模拟单元、地面反射结构6；所述桥梁模型8安装于日照模拟单元中；所述地面反射结构6连接日照模拟单元；所述风模拟单元位于桥梁模型8、日照模拟单元、地面反射结构6外侧部；As shown in FIGS. 1 to 5 , an experimental device for simulating a bridge under the combined effects of wind and sunshine comprises a bridge model 8, a wind simulation unit, a sunshine simulation unit, and a ground reflection structure 6; the bridge model 8 is installed in the sunshine simulation unit; the ground reflection structure 6 is connected to the sunshine simulation unit; the wind simulation unit is located outside the bridge model 8, the sunshine simulation unit, and the ground reflection structure 6;
所述风模拟单元包括鼓风机1；所述鼓风机1朝向桥梁模型8、日照模拟单元、地面反射结构6位置设置；所述鼓风机1的风力风速大小、风向角可调，借此模拟出自然环境下风对桥梁的静力作用，动力作用，同时反映出桥梁的风压值变化，作用于不同位置的风力对于桥梁的作用效果；The wind simulation unit includes a blower 1; the blower 1 is arranged toward the bridge model 8, the sunshine simulation unit, and the ground reflection structure 6; the wind force, wind speed, and wind direction of the blower 1 are adjustable, thereby simulating the static and dynamic effects of wind on the bridge in a natural environment, and reflecting the changes in the wind pressure value of the bridge, and the effects of wind acting at different positions on the bridge;
所述日照模拟单元包括日照模拟框架、日照模拟灯2、日照模拟滑轮3；所述日照模拟灯2通过日照模拟滑轮3安装于日照模拟框架上；The sunshine simulation unit comprises a sunshine simulation frame, a sunshine simulation lamp 2, and a sunshine simulation pulley 3; the sunshine simulation lamp 2 is installed on the sunshine simulation frame through the sunshine simulation pulley 3;
所述日照模拟框架包括圆形框架5、弧形框架7；所述弧形框架7呈拱形，模拟太阳运动轨迹；所述弧形框架7两端通过轨道滑轮4连接于圆形框架5上，依据轨道滑轮4的运动可使弧形框架7进行圆周运动；The sunlight simulation frame includes a circular frame 5 and an arc frame 7; the arc frame 7 is arched to simulate the movement trajectory of the sun; both ends of the arc frame 7 are connected to the circular frame 5 through track pulleys 4, and the arc frame 7 can perform circular motion according to the movement of the track pulleys 4;
所述日照模拟灯2包括多种光照强度，可模拟多种直射温度，实现太阳光模拟；The sunlight simulation lamp 2 includes a variety of light intensities, which can simulate a variety of direct temperatures to achieve sunlight simulation;
所述日照模拟滑轮3包括三个小滑轮9、三角架10；所述三角架10为三棱柱形状的框架，其三根侧棱上安装三个小滑轮9；所述其中两个小滑轮9设于弧形框架7外侧，并位于同一平面；余下一个小滑轮9位于弧形框架7内侧，弧形框架7从三个小滑轮9中间位置穿过并与小滑轮9完美贴合，小滑轮9外轮廓弧度贴合弧形框架7弧度，可实现小滑轮9自身转动和带动整体在杆上滑动，所述设于内侧的三角架10顶点处延伸一部分直杆，顶部安装日照模拟灯2；The sunlight simulation pulley 3 includes three small pulleys 9 and a tripod 10; the tripod 10 is a triangular prism-shaped frame, and three small pulleys 9 are installed on its three side edges; two of the small pulleys 9 are arranged on the outside of the arc frame 7 and are located in the same plane; the remaining small pulley 9 is located on the inside of the arc frame 7, and the arc frame 7 passes through the middle of the three small pulleys 9 and fits perfectly with the small pulley 9. The arc of the outer contour of the small pulley 9 fits the arc of the arc frame 7, which can realize the rotation of the small pulley 9 and drive the whole to slide on the rod. A part of the straight rod is extended from the vertex of the tripod 10 arranged on the inside, and the sunlight simulation lamp 2 is installed on the top;
所述轨道滑轮4包括三个小滑轮9、三角架10；所述三角架10为三棱柱形状的框架，其三根侧棱上安装三个小滑轮9；其中两个小滑轮9设于圆形框架5上端，并位于同一平面，余下一个小滑轮9位于圆形框架5下端，圆形框架5从三个小滑轮9中间位置穿过并与小滑轮9完美贴合，实现小滑轮9自身转动和带动整体在杆上滑动，所述圆形框架5上端两个三角架10顶点位置分别延伸两条直杆连接弧形框架7底端，使三角架10与弧形框架7一体成型；The track pulley 4 includes three small pulleys 9 and a tripod 10; the tripod 10 is a triangular prism-shaped frame, and three small pulleys 9 are installed on its three side edges; two of the small pulleys 9 are arranged at the upper end of the circular frame 5 and are located in the same plane, and the remaining small pulley 9 is located at the lower end of the circular frame 5. The circular frame 5 passes through the middle position of the three small pulleys 9 and fits perfectly with the small pulley 9, so that the small pulley 9 can rotate itself and drive the whole to slide on the rod. Two straight rods are extended from the vertices of the two tripods 10 at the upper end of the circular frame 5 to connect the bottom end of the arc frame 7, so that the tripod 10 and the arc frame 7 are integrally formed;
所述地面反射结构6包括铺设的一层反射材料，该反射材料由多种反射率不同的材料组成，用于模拟自然土地的地表粗糙度；The ground reflection structure 6 includes a layer of reflection material, which is composed of a plurality of materials with different reflectivity and is used to simulate the surface roughness of natural land;
所述地面反射结构6与日照系统框架通过多个竖直的支撑杆连接；所述支撑杆可伸缩；The ground reflection structure 6 is connected to the sunlight system frame through a plurality of vertical support rods; the support rods are retractable;
所述桥梁模型8两端通过安装固定装置沿圆形框架5任意直径位置安装固定；The two ends of the bridge model 8 are installed and fixed along any diameter position of the circular frame 5 by means of installation and fixing devices;
所述安装固定装置包括但不限于细线、铁丝、绳子；The installation and fixing device includes but is not limited to thin wire, iron wire, and rope;
所述鼓风机1功率低于100W；The power of the blower 1 is less than 100W;
所述圆形框架5和弧形框架7都是圆杆形结构；The circular frame 5 and the arc frame 7 are both round rod structures;
所述小滑轮9的滑动面为内凹结构，内凹结构的形状为半圆形，周径与圆形框架5和圆形框架5周径相同；The sliding surface of the small pulley 9 is a concave structure, the shape of the concave structure is semicircular, and the circumference is the same as the circumference of the circular frame 5 and the circular frame 5;
实施例1、一种模拟桥梁在风和日照共同作用下的实验装置Example 1: An experimental device simulating a bridge under the combined effects of wind and sunlight
模拟日照辐射强弱：通过圆形框架和弧形框架确定太阳的轨道，以日照模拟滑轮模拟太阳高度角，即一天中太阳东升西落的自然现象，日照模拟灯进行太阳光强模拟，调节光强以模拟实际情况中云层遮挡造成的辐射强弱变化，小滑轮滑动实现光源的上下移动；Simulate the intensity of sunlight radiation: The circular frame and the arc frame are used to determine the sun's orbit, and the sunlight simulation pulley is used to simulate the solar altitude angle, that is, the natural phenomenon of the sun rising in the east and setting in the west during the day. The sunlight simulation lamp simulates the intensity of sunlight and adjusts the light intensity to simulate the changes in radiation intensity caused by cloud cover in actual situations. The small pulley slides to realize the up and down movement of the light source;
模拟太阳时间角：通过日照模拟滑轮、轨道滑轮在实验中配合圆形框架和弧形框架一起，在弧形框架上滑动来调节太阳时间角；Simulating the solar time angle: The solar time angle is adjusted by sliding on the arc frame together with the circular frame and the arc frame in the experiment through the sunshine simulation pulley and the track pulley;
模拟地表粗糙度：通过设置不同反射材料，令地面反射结构可模拟不同的地表粗糙度；Simulate surface roughness: By setting different reflective materials, the ground reflective structure can simulate different surface roughness;
模拟风环境：桥梁模型固定在圆形框架上，实验时通过调节鼓风机的风力大小、风速大小、鼓风机位置来测试其风环境的变化情况；Simulating wind environment: The bridge model is fixed on a circular frame. During the experiment, the wind force, wind speed and position of the blower are adjusted to test the changes in the wind environment.
由实施例1可知，经本发明的一种模拟桥梁在风和日照共同作用下的实验装置进行实验，可进行不同风和日照条件模拟，可进行多影响因素组合模拟，以探究各种情况的风和日照条件下桥梁的建设问题；As can be seen from Example 1, by conducting experiments using an experimental device for simulating a bridge under the combined effects of wind and sunshine of the present invention, different wind and sunshine conditions can be simulated, and a combination of multiple influencing factors can be simulated to explore the construction of bridges under various wind and sunshine conditions;
综上所述，本专利技术方案，通过设置了日照模拟单元和地面反射结构，模拟了太阳温度场对于桥梁的影响，为设计者提供温度对于桥梁的影响数据，有助于分析解决目前存在的桥梁建设的温度问题，通过侧边设置的鼓风机，以不同档位来调节风速大小，同时也可以调节风向角，借此模拟出自然环境下风对桥梁的静力作用、动力作用，同时反映出桥梁的风压值变化，作用于不同位置的风力对于桥梁的作用效果，为设计者在设计桥梁时提供了宝贵的实验数据，降低工程造价，结构简单，制造成本低、应用性好。To sum up, the technical solution of this patent simulates the impact of the solar temperature field on the bridge by setting up a sunshine simulation unit and a ground reflection structure, provides designers with data on the impact of temperature on the bridge, and helps to analyze and solve the temperature problems existing in the current bridge construction. The blower set on the side can adjust the wind speed in different gears, and the wind direction angle can also be adjusted to simulate the static and dynamic effects of wind on the bridge in the natural environment, and reflect the changes in the wind pressure value of the bridge, the effect of wind acting at different positions on the bridge, and provide designers with valuable experimental data when designing bridges, reducing engineering costs. It has a simple structure, low manufacturing cost and good applicability.
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术无需创造性劳动就可以根据本发明的构思做出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的试验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in the field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.
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