CN104458569B - Fire-proof coating for tunnels vibration wind inhales adhesive property test device and its making and method of testing - Google Patents
Fire-proof coating for tunnels vibration wind inhales adhesive property test device and its making and method of testing Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 85
- 239000011248 coating agent Substances 0.000 title claims abstract description 70
- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000010998 test method Methods 0.000 title claims abstract description 6
- 230000001070 adhesive effect Effects 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 239000004568 cement Substances 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 239000003292 glue Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000003973 paint Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000007655 standard test method Methods 0.000 claims description 2
- 238000011056 performance test Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000004079 fireproofing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
本发明涉及一种隧道防火涂料振动风吸粘结性能测试装置及其制作和测试方法，测试装置包括混凝土振动台和固定设在混凝土振动台上的钢质固定支架基座，所述钢质固定支架基座上横设有由上、下夹片构成的钢质固定支架，所述钢质固定支架上固定有紧密排列的隧道防火涂料试件，所述隧道防火涂料试件包括有纤维增强水泥板、涂覆在纤维增强水泥板表面上的防火涂料，以及用胶粘结在防火涂料下表面的钢质夹具，所述钢质夹具下方悬挂有外挂重物。通过钢质固定支架基座，使得试件振幅频率与振动台保持一致。
The invention relates to a test device for the vibration and wind suction bonding performance of a tunnel fireproof coating and its production and test method. The test device includes a concrete vibrating table and a steel fixed support base fixed on the concrete vibrating table. A steel fixed bracket composed of upper and lower clips is horizontally arranged on the bracket base, and tightly arranged tunnel fireproof coating specimens are fixed on the steel fixed bracket, and the tunnel fireproof coating specimens include fiber-reinforced cement board, a fireproof coating coated on the surface of the fiber reinforced cement board, and a steel fixture bonded to the lower surface of the fireproof coating with glue, and an external heavy object is suspended below the steel fixture. Through the steel fixed bracket base, the amplitude frequency of the specimen is kept consistent with that of the vibration table.
Description
技术领域：Technical field:
本发明涉及一种隧道防火涂料振动风吸粘结性能测试装置及其制作和测试方法，属于土木建筑工程领域。The invention relates to a device for testing the vibration and wind suction bonding performance of a tunnel fireproof coating and a manufacturing and testing method thereof, belonging to the field of civil engineering.
背景技术：Background technique:
隧道防火涂料用于处于特定的隧道环境，往来车辆造成隧道的振动对于涂抹于隧道衬砌的隧道防火涂料的影响较大；此外，隧道内列车、车辆的高速行驶使得隧道内产生强大气流，对隧道防火涂料有较大风吸力作用。而隧道防火涂料的振动风吸粘结性能是对其粘结耐久性进行评价的重要指标。但目前而言尚无对振动风吸粘结性能这一指标进行评价的具体测试方法。振动风吸粘结性能的评价指标和评价简易方法对于优化提高隧道防火涂料粘结耐久性有重要意义。Tunnel fireproof coatings are used in a specific tunnel environment. The vibration of the tunnel caused by passing vehicles has a greater impact on the tunnel fireproof coatings applied to the tunnel lining; Fire retardant coatings have greater wind suction. The vibration and wind suction bonding performance of tunnel fireproof coatings is an important index to evaluate the bonding durability. But at present, there is no specific test method for evaluating the index of vibratory wind suction bonding performance. The evaluation index and simple evaluation method of vibration wind suction bonding performance are of great significance for optimizing and improving the bonding durability of tunnel fireproof coatings.
专利号201210118894公开了纤维与砂浆材料粘结性能测试装置及方法，为纤维与砂浆材料粘结性能测试提供了一个简单可行的办法。但专利中并未涉及试件的振动与风吸，不能较好的反映风吸和振动对于试件粘结性能的影响。Patent No. 201210118894 discloses a device and method for testing the bonding performance of fibers and mortar materials, which provides a simple and feasible method for testing the bonding properties of fibers and mortar materials. However, the patent does not involve the vibration and wind suction of the test piece, which cannot better reflect the influence of wind suction and vibration on the bonding performance of the test piece.
发明内容：Invention content:
本发明的目的在于提供一种隧道防火涂料振动风吸粘结性能测试装置及其制作和测试方法，该装置操作简单，易于推广应用。The object of the present invention is to provide a vibration-wind-suction bonding performance testing device for tunnel fireproof coatings and its manufacturing and testing methods. The device is simple to operate and easy to popularize and apply.
本发明隧道防火涂料振动风吸粘结性能测试装置，其特征在于：包括混凝土振动台和固定设在混凝土振动台上的钢质固定支架基座，所述钢质固定支架基座上横设有由上、下夹片构成的钢质固定支架，所述钢质固定支架上固定有紧密排列的隧道防火涂料试件，所述隧道防火涂料试件包括有纤维增强水泥板、涂覆在纤维增强水泥板表面上的防火涂料，以及用胶粘结在防火涂料下表面的钢质夹具，所述钢质夹具下方悬挂有外挂重物。The tunnel fireproof coating vibration wind suction bonding performance testing device of the present invention is characterized in that: it comprises a concrete vibrating table and a steel fixed support base fixed on the concrete vibrating table, and the steel fixed support base is horizontally provided with A steel fixing bracket composed of upper and lower clips, on which tightly arranged tunnel fireproof coating specimens are fixed, and the tunnel fireproof coating specimens include fiber-reinforced cement board coated on fiber-reinforced The fireproof coating on the surface of the cement board, and the steel fixture bonded on the lower surface of the fireproof coating with glue, and an external heavy object is suspended below the steel fixture.
上述下夹片由左、右两钢片构成，纤维增强水泥板两边挂置在两钢片之间的挂缝内。The above-mentioned lower clip is composed of left and right steel sheets, and the two sides of the fiber-reinforced cement board are hung in the hanging seam between the two steel sheets.
上述钢质固定支架基座通过设在其脚底的螺栓孔和螺栓配合固定在混凝土振动台上。The above-mentioned steel fixed support base is fixed on the concrete vibrating table through the bolt holes and bolts arranged on the soles of the feet.
本发明制作隧道防火涂料振动风吸粘结性能测试装置的方法，其特征在于：The present invention makes the method for testing device of vibrating and wind-absorbing bonding properties of fireproof coating for tunnels, which is characterized in that:
（1）制作隧道防火涂料试件，基底底板为纤维增强水泥板，将隧道防火涂料分层涂抹于基底底板，涂抹厚度达到后养护至28天强度，使用AB胶将钢质夹具粘于隧道防火涂料表面；(1) Make the tunnel fireproof coating test piece, the base floor is fiber reinforced cement board, apply the tunnel fireproof coating on the base floor layer by layer, after the coating thickness reaches the strength of 28 days, use AB glue to stick the steel fixture to the tunnel fireproof paint surface;
（2）制作隧道防火涂料试件的钢质固定支架，支架高度、刚度和稳定性须适宜，保证隧道防火涂料试件由钢质固定支架上夹片、下夹片夹紧后不松动，且在振动过程中稳定不发生移动；此外，钢质固定支架基座便于与混凝土振动台通过螺栓固定。(2) To make the steel fixing bracket for the tunnel fireproof coating specimen, the height, stiffness and stability of the bracket must be appropriate to ensure that the tunnel fireproof coating specimen will not loosen after being clamped by the upper clip and the lower clip of the steel fixing bracket, and It is stable and does not move during the vibration process; in addition, the steel fixed bracket base is convenient to be fixed with the concrete vibration table by bolts.
（3）使用螺栓将一定质量的外挂重物挂在钢质夹具上。(3) Use bolts to hang a certain mass of external heavy objects on the steel fixture.
本发明使用装置进行隧道防火涂料振动风吸粘结性能测试的方法，其特征在于：The present invention uses a device to carry out the method for testing the vibration and wind suction bonding performance of tunnel fireproof coatings, which is characterized in that:
1）在试验过程中先将钢质固定支架的基座用螺栓固定于混凝土振动台上，再将隧道防火涂料试件挂于钢质固定支架下夹片左右两钢片挂缝内，隧道防火涂料试件的钢质夹具朝下，并列排放，隧道防火涂料试件两两之间排列紧密，保证尽量不留空隙，隧道防火涂料试件排放整齐后将钢质固定支架上夹片盖上，并用螺栓拧紧固定，保证各个隧道防火涂料试件安放稳定无滑动现象，最后通过螺栓将一定质量的重物挂在钢质夹具上。1) During the test, first fix the base of the steel fixed bracket on the concrete vibrating table with bolts, and then hang the tunnel fireproof coating specimen in the hanging joints of the left and right steel sheets of the lower clip of the steel fixed bracket, and the tunnel fireproof The steel fixtures of the paint test pieces face down and are arranged side by side. The tunnel fireproof paint test pieces are arranged tightly between each other to ensure that no gaps are left as far as possible. After the tunnel fireproof paint test pieces are arranged neatly, cover the clips on the steel fixing bracket. Tighten and fix with bolts to ensure that each tunnel fireproof coating test piece is placed stably without slipping, and finally hang a heavy object of a certain quality on the steel fixture through the bolts.
2）钢质固定支架、隧道防火涂料试件及外挂重物安装固定并调试好之后，采用振动台进行振动，达到要求的时间后停止振动，拧松螺栓将钢质固定支架上夹片取下，依次取下各隧道防火涂料试件，按国标测试方法，沿试件表面垂直方向以5mm/min的拉伸速度测定最大抗拉强度，即可计算其粘结强度；其振动粘结强度测试方法为（粘结强度精确到0.1MPa）： 2) After the steel fixed bracket, the tunnel fireproof coating test piece and the external heavy objects are installed and fixed and debugged, use a vibrating table to vibrate, stop the vibration after the required time is reached, loosen the bolts and remove the clip on the steel fixed bracket , take down each tunnel fireproof coating specimen in turn, according to the national standard test method, measure the maximum tensile strength along the vertical direction of the specimen surface at a tensile speed of 5mm/min, and then calculate its bond strength; the vibration bond strength test The method is (the bond strength is accurate to 0.1MPa):
--------振动后隧道防火涂料试件粘结强度，单位为； --------The bonding strength of the tunnel fireproof coating specimen after vibration, the unit is ;
P--------振动后隧道防火涂料试件拉伸时荷载，单位为N（牛顿）；P -------- load when the tunnel fireproof coating specimen is stretched after vibration, the unit is N (Newton);
--------振动隧道防火涂料试件胶接面积，单位。 -------- Bonding area of fireproof coating specimens for vibrating tunnels, unit .
本发明采用将施加外力的隧道防火涂料试件固定于普通混凝土振动台上振动后测试隧道防火涂料粘结性能变化，通过混凝土振动台振动（模拟振动）和施加外力（模拟风吸）评价隧道防火涂料粘结性能变化，使用该发明装置能较好还原隧道振动风吸环境。In the present invention, the test piece of the tunnel fireproof coating applied with external force is fixed on an ordinary concrete vibrating table to test the change of the bonding performance of the tunnel fireproof coating, and the tunnel fireproofing is evaluated through the vibration of the concrete vibrating table (simulated vibration) and the application of external force (simulated wind suction). The bonding performance of the paint changes, and the device of the invention can better restore the vibration and wind suction environment of the tunnel.
本发明特点如下：Features of the present invention are as follows:
1）振动台的振动频率（40HZ）与实际隧道振动频率（30-80HZ）等振动特性较为相符。1) The vibration frequency (40HZ) of the vibration table is relatively consistent with the vibration characteristics such as the actual tunnel vibration frequency (30-80HZ).
2）将隧道防火涂料试件与振动台采用特制装置固定，使得试件与振动台频率、振幅等振动特性均保持一致。2) Fix the tunnel fireproof coating specimen and the vibrating table with a special device, so that the vibration characteristics of the specimen and the vibrating table such as frequency and amplitude are consistent.
3）普通混凝土振动台容易获得，固定试件用装置便于加工，原理简单。3) The ordinary concrete shaking table is easy to obtain, the device for fixing the test piece is easy to process, and the principle is simple.
4）通过外挂重物的方法模拟隧道内风吸力作用，装置便于加工，原理简单。4) The wind suction effect in the tunnel is simulated by hanging heavy objects, the device is easy to process, and the principle is simple.
5）试件振动时间和重物质量便于控制，可以通过不同振动时间和悬挂重物质量所对应的粘结性能的变化，能较为可靠地评价隧道防火涂料在振动和风吸力情况下的粘结性能。5) The vibration time of the test piece and the weight of the weight are easy to control, and the bonding performance of the tunnel fireproof coating under vibration and wind suction can be evaluated more reliably through the change of the bonding performance corresponding to different vibration times and the weight of the suspended weight .
附图说明：Description of drawings:
图1是本发明的带外挂重物的隧道防火涂料试件倒立放置时的正立面图；Fig. 1 is the front elevation view when the tunnel fireproof coating sample with the external weight of the present invention is placed upside down;
图2是本发明的隧道防火涂料试件正立放置时的平面图；Fig. 2 is the plane view when the tunnel fireproof paint test piece of the present invention is placed upright;
图3是本发明的隧道防火涂料试件安装前隧道防火涂料振动风吸粘结性能测试装置平面图；Fig. 3 is the plane view of the tunnel fireproof paint vibration wind suction bonding performance testing device before the tunnel fireproof paint test piece of the present invention is installed;
图4是本发明的隧道防火涂料试件安装前隧道防火涂料振动风吸粘结性能测试装置侧立面图；Fig. 4 is the side elevation view of the tunnel fireproof paint vibration wind suction bonding performance testing device before the tunnel fireproof paint test piece of the present invention is installed;
图5是本发明的带外挂重物的隧道防火涂料试件安装后隧道防火涂料振动风吸粘结性能测试装置正立面图。Fig. 5 is a front elevation view of the tunnel fireproof coating vibration wind suction bonding performance testing device after installation of the tunnel fireproof coating test piece with external heavy objects according to the present invention.
具体实施方式：detailed description:
本发明隧道防火涂料振动风吸粘结性能测试装置，包括普通混凝土振动台A和固定设在普通混凝土振动台上的钢质固定支架基座8，所述钢质固定支架基座上横设有由上、下夹片5、6构成的钢质固定支架12，所述钢质固定支架12上固定有紧密排列的隧道防火涂料试件10，所述隧道防火涂料试件10包括有纤维增强水泥板4、涂覆在纤维增强水泥板表面上的防火涂料3，以及用胶粘结在防火涂料下表面的钢质夹具2，所述钢质夹具下方悬挂有外挂重物11。Tunnel fireproof coating vibration wind suction bonding performance testing device of the present invention comprises ordinary concrete vibrating table A and steel fixed bracket base 8 fixedly arranged on the ordinary concrete vibrating table, on the said steel fixed bracket base horizontally set A steel fixed bracket 12 composed of upper and lower clips 5 and 6, on which tightly arranged tunnel fireproof coating specimens 10 are fixed, and the tunnel fireproof coating specimens 10 include fiber-reinforced cement Board 4, fireproof paint 3 coated on the surface of the fiber reinforced cement board, and a steel fixture 2 bonded to the lower surface of the fireproof paint with glue, and an external weight 11 is hung below the steel fixture.
为了设计合理，上述下夹片由左、右两钢片构成，并用螺栓7锁紧固定，纤维增强水泥板两边挂置在两钢片之间的挂缝内。In order to design rationally, the above-mentioned lower clip is composed of left and right steel sheets, which are locked and fixed with bolts 7, and both sides of the fiber reinforced cement board are hung in the hanging seam between the two steel sheets.
为了固定牢靠，上述钢质固定支架基座通过设在其脚底的螺栓孔9和螺栓配合固定在混凝土振动台A上。In order to be fixed firmly, the above-mentioned steel fixed support base is fixed on the concrete vibrating table A through the bolt holes 9 on the bottom of the foot and the bolts.
本发明制作隧道防火涂料振动风吸粘结性能测试装置的方法，The present invention makes the method for testing device of vibrating wind suction bonding performance of tunnel fireproof coating,
（1）制作隧道防火涂料试件10，基底底板为纤维增强水泥板4，将隧道防火涂料3分层涂抹于基底底板，涂抹厚度达到后养护至28天强度，使用AB胶将钢质夹具2粘于隧道防火涂料表面；上述各步操作均应符合《混凝土结构防火涂料》GB 28375-2012中的对应规定要求。(1) Make the tunnel fireproof coating specimen 10, the base floor is fiber reinforced cement board 4, apply the tunnel fireproof coating 3 on the base floor layer by layer, after the coating thickness reaches the strength of 28 days, use AB glue to seal the steel fixture 2 Adhesive to the surface of the tunnel fireproof coating; the above-mentioned steps should meet the corresponding requirements in the "Fireproof Coatings for Concrete Structures" GB 28375-2012.
（2）制作隧道防火涂料试件的钢质固定支架12，支架高度、刚度和稳定性须适宜，保证隧道防火涂料试件由钢质固定支架上夹片5、下夹片6夹紧后不松动，且在振动过程中稳定不发生移动；此外，钢质固定支架基座便于与混凝土振动台通过螺栓固定。(2) Make the steel fixing bracket 12 for the tunnel fireproof coating specimen. It is not loose, and it is stable and does not move during the vibration process; in addition, the base of the steel fixed bracket is convenient to be fixed with the concrete vibrating table by bolts.
（3）使用螺栓将一定质量的外挂重物11挂在钢质夹具2上。(3) Use bolts to hang an external heavy object 11 of a certain mass on the steel fixture 2 .
本发明使用装置进行隧道防火涂料振动风吸粘结性能测试的方法，The present invention uses the device to carry out the method for testing the vibration and wind suction bonding performance of tunnel fireproof coatings,
1）在试验过程中先将钢质固定支架的基座用螺栓固定于混凝土振动台上，再将隧道防火涂料试件挂于钢质固定支架下夹片左右两钢片挂缝内，隧道防火涂料试件的钢质夹具朝下，并列排放，隧道防火涂料试件两两之间排列紧密，保证尽量不留空隙，隧道防火涂料试件排放整齐后将钢质固定支架上夹片盖上，并用螺栓拧紧固定，保证各个隧道防火涂料试件安放稳定无滑动现象，最后通过螺栓将一定质量的重物挂在钢质夹具上。1) During the test, first fix the base of the steel fixed bracket on the concrete vibrating table with bolts, and then hang the tunnel fireproof coating specimen in the hanging joints of the left and right steel sheets of the lower clip of the steel fixed bracket, and the tunnel fireproof The steel fixtures of the paint test pieces face down and are arranged side by side. The tunnel fireproof paint test pieces are arranged tightly between each other to ensure that no gaps are left as far as possible. After the tunnel fireproof paint test pieces are arranged neatly, cover the clips on the steel fixing bracket. Tighten and fix with bolts to ensure that each tunnel fireproof coating test piece is placed stably without slipping, and finally hang a heavy object of a certain quality on the steel fixture through the bolts.
2）钢质固定支架、隧道防火涂料试件及外挂重物安装固定并调试好之后，采用振动台进行振动，达到要求的时间后停止振动，拧松螺栓将钢质固定支架上夹片取下，依次取下各隧道防火涂料试件，按《复层建筑涂料》（GB/T 9779-2005）的方法，沿试件表面垂直方向以5mm/min的拉伸速度测定最大抗拉强度，即可计算其粘结强度；其振动粘结强度测试方法为（粘结强度精确到0.1MPa）： 2) After the steel fixed bracket, the tunnel fireproof coating test piece and the external heavy objects are installed and fixed and debugged, use a vibrating table to vibrate, stop the vibration after the required time is reached, loosen the bolts and remove the clip on the steel fixed bracket , take down each tunnel fireproof coating specimen in turn, and measure the maximum tensile strength along the vertical direction of the specimen surface at a tensile speed of 5 mm/min according to the method of "Multilayer Architectural Coatings" (GB/T 9779-2005), that is The bond strength can be calculated; the vibration bond strength test method is (bond strength accurate to 0.1MPa):
--------振动后隧道防火涂料试件粘结强度，单位为； --------The bonding strength of the tunnel fireproof coating specimen after vibration, the unit is ;
P--------振动后隧道防火涂料试件拉伸时荷载，单位为N（牛顿）；P -------- load when the tunnel fireproof coating specimen is stretched after vibration, the unit is N (Newton);
--------振动隧道防火涂料试件胶接面积，单位。 -------- Bonding area of fireproof coating specimens for vibrating tunnels, unit .
本发明采用将施加外力的隧道防火涂料试件固定于普通混凝土振动台上振动后测试隧道防火涂料粘结性能变化，通过混凝土振动台振动（模拟振动）和施加外力（模拟风吸）评价隧道防火涂料粘结性能变化，使用该发明装置能较好还原隧道振动风吸环境。In the present invention, the test piece of the tunnel fireproof coating applied with external force is fixed on an ordinary concrete vibrating table to test the change of the bonding performance of the tunnel fireproof coating, and the tunnel fireproofing is evaluated through the vibration of the concrete vibrating table (simulated vibration) and the application of external force (simulated wind suction). The bonding performance of the paint changes, and the device of the invention can better restore the vibration and wind suction environment of the tunnel.
本发明特点如下：Features of the present invention are as follows:
1）振动台的振动频率（40HZ）与实际隧道振动频率（30-80HZ）等振动特性较为相符。1) The vibration frequency (40HZ) of the vibration table is relatively consistent with the vibration characteristics such as the actual tunnel vibration frequency (30-80HZ).
2）将隧道防火涂料试件与振动台采用特制装置固定，使得试件与振动台频率、振幅等振动特性均保持一致。2) Fix the tunnel fireproof coating specimen and the vibrating table with a special device, so that the vibration characteristics of the specimen and the vibrating table such as frequency and amplitude are consistent.
3）普通混凝土振动台容易获得，固定试件用装置便于加工，原理简单。3) The ordinary concrete shaking table is easy to obtain, the device for fixing the test piece is easy to process, and the principle is simple.
4）通过外挂重物的方法模拟隧道内风吸力作用，装置便于加工，原理简单。4) The wind suction effect in the tunnel is simulated by hanging heavy objects, the device is easy to process, and the principle is simple.
5）试件振动时间和重物质量便于控制，可以通过不同振动时间和悬挂重物质量所对应的粘结性能的变化，能较为可靠地评价隧道防火涂料在振动和风吸力情况下的粘结性能。5) The vibration time of the test piece and the weight of the weight are easy to control, and the bonding performance of the tunnel fireproof coating under vibration and wind suction can be evaluated more reliably through the change of the bonding performance corresponding to different vibration times and the weight of the suspended weight .
以上所述仅为本发明的较佳实施例，凡依本发明申请专利范围所做的均等变化与修饰，皆应属本发明的涵盖范围。The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.
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