CN106053225A - Testing device for applying persistent pressure-torsion damage load to concrete member - Google Patents
Testing device for applying persistent pressure-torsion damage load to concrete member Download PDFInfo
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Abstract
本发明提供一种对混凝土构件施工持久压扭损伤荷载的试验装置，其包括一扭矩加载机构和一压力加载机构；扭矩加载机构包括一第一基座、一水平滚轴、一垂直推轴、一推轴套筒、及一第一千斤顶；压力加载机构包括一第二基座、一水平推轴、及一第二千斤顶；水平推轴沿轴向设有一第二限位部和一第一齿条组，第二支座套筒的内壁设有与该第一齿条组相啮合的第二齿条组；第一感应器与第二感应器均与一数显读数仪连接。本发明结构简单紧凑、耗费材料较少，不仅能够长时间保持所施加的压力与扭矩损伤荷载，而且能够对混凝土构件所受到的扭矩、压力进行调整，整个实验装置中扭矩加载机构与压力加载机构之间相互不会造成干扰。
The invention provides a test device for permanent compressive torsional damage load of concrete member construction, which includes a torque loading mechanism and a pressure loading mechanism; the torque loading mechanism includes a first base, a horizontal roller, a vertical push shaft, A push shaft sleeve, and a first jack; the pressure loading mechanism includes a second base, a horizontal push shaft, and a second jack; the horizontal push shaft is provided with a second limiter along the axial direction and a first rack group, the inner wall of the second bearing sleeve is provided with a second rack group meshing with the first rack group; the first sensor and the second sensor are connected with a digital display reading instrument connect. The invention has a simple and compact structure, consumes less material, not only can maintain the applied pressure and torque damage load for a long time, but also can adjust the torque and pressure on the concrete member. The torque loading mechanism and the pressure loading mechanism in the whole experimental device will not interfere with each other.
Description
【技术领域】【Technical field】
本发明属于建筑施工领域的混凝土构件用的试验装置，具体涉及一种对混凝土构件施工持久压扭损伤荷载的试验装置。The invention belongs to a test device for concrete components in the field of building construction, and in particular relates to a test device for the permanent compressive torsional damage load of concrete component construction.
【背景技术】【Background technique】
早拆模板技术是一种新型的“快拆体系”，正处于工程推广运用阶段。该“快拆体系”就是当某一层浇筑的混凝土达到一定强度时，在保证施工安全的前提下，除保留的立杆及晚拆支撑头外，将梁底模板提早拆除，从而加快施工进度。目前铝合金早拆模板技术中梁板底模的拆除时间主要是参照国外经验，在混凝土龄期达到36小时即拆除梁板底模。因此，尚未成熟的早龄期混凝土构件受到外界荷载作用的可能性也加大，早龄期凝土构件在外界荷载的作用下是否会产生损伤及其损伤对后期混凝土构件的性能是否会产生影响是工程人员高度关注的问题之一。Early demolition formwork technology is a new type of "quick dismantling system", which is in the stage of project promotion and application. The "quick release system" means that when the concrete poured in a certain layer reaches a certain strength, under the premise of ensuring construction safety, except for the reserved vertical poles and late removal support heads, the beam bottom formwork is removed early, thereby speeding up the construction progress . At present, the demolition time of the beam and slab bottom formwork in the aluminum alloy early demolition formwork technology is mainly based on foreign experience, and the beam and slab bottom formwork will be removed when the concrete age reaches 36 hours. Therefore, the immature early-age concrete components are more likely to be subjected to external loads. Whether the early-age concrete components will be damaged under the action of external loads and whether the damage will affect the performance of later concrete components It is one of the issues that engineers pay close attention to.
为此，研究早龄期混凝土构件在同时受到持久性扭矩和压力作用下所表现出来的损伤力学性能，是计算早龄期混凝土结构强度、刚度和稳定性的关键问题之一。Therefore, studying the damage mechanical properties of early-age concrete members under the simultaneous action of persistent torque and pressure is one of the key issues in calculating the strength, stiffness and stability of early-age concrete structures.
目前，一些研究者研发出了一些对混凝土构件的受扭、受压性能进行试验的试验装置，但均存在着一些缺陷，例如，整个试验装置耗费材料量大，对受到的扭矩上限值有要求，无法对混凝土构件受到的扭矩进行增大调整；试验装置往往会出现受扭、受压相互干扰的现象，从而无法有效地对混凝土构件施加持久性的压、扭损伤荷载。At present, some researchers have developed some test devices for testing the torsion and compression performance of concrete members, but there are some defects. It is impossible to increase and adjust the torque on concrete members; the test device often has the phenomenon of mutual interference between torsion and compression, so that it is impossible to effectively apply permanent compression and torsion damage loads to concrete members.
【发明内容】【Content of invention】
本发明所要解决的技术问题在于提供一种对混凝土构件施工持久压扭损伤荷载的试验装置。The technical problem to be solved by the present invention is to provide a test device for permanent compressive torsional damage load of concrete member construction.
本发明是通过以下技术方案解决上述技术问题的：一种对混凝土构件施工持久压扭损伤荷载的试验装置，该试验装置包括一扭矩加载机构和一压力 加载机构，所述扭矩加载机构与压力加载机构分别与混凝土构件的两端连接；The present invention solves the above-mentioned technical problems through the following technical solutions: a test device for permanent compressive torsional damage load of concrete member construction, the test device includes a torque loading mechanism and a pressure loading mechanism, and the torque loading mechanism is connected with the pressure loading mechanism. The mechanism is respectively connected with both ends of the concrete member;
所述扭矩加载机构包括一第一基座、一水平滚轴、一垂直推轴、一推轴套筒、及一垂直安装于第一基座的第一千斤顶；所述水平滚轴通过两第一支座套筒水平安装于第一基座，所述水平滚轴上焊接有一第一齿轮，该水平滚轴的左端部抵于第一基座，该水平滚轴的右端部设有一与混凝土构件一端连接的第一加载端板；所述推轴套筒垂直立设于第一基座上，所述垂直推轴穿设于推轴套筒，所述垂直推轴沿轴向设有一第一限位部和一第一齿牙组，所述第一限位部与第一齿牙组相背设置，所述第一齿牙组与第一齿轮相啮合，该垂直推轴的首端上设有一与该第一限位部匹配的第一卡位件，且该垂直推轴的尾端通过一第一感应器与第一千斤顶连接；The torque loading mechanism includes a first base, a horizontal roller, a vertical push shaft, a push shaft sleeve, and a first jack vertically installed on the first base; the horizontal roller passes through The two first support sleeves are horizontally installed on the first base, and a first gear is welded on the horizontal roller, the left end of the horizontal roller is against the first base, and the right end of the horizontal roller is provided with a The first loading end plate connected to one end of the concrete member; the push shaft sleeve is vertically installed on the first base, the vertical push shaft is passed through the push shaft sleeve, and the vertical push shaft is arranged in the axial direction There is a first limiting part and a first tooth group, the first limiting part is set opposite to the first tooth group, the first tooth group is meshed with the first gear, the vertical push shaft A first locking member matching the first limiting portion is provided on the head end, and the tail end of the vertical push shaft is connected to the first jack through a first sensor;
所述压力加载机构包括一第二基座、一水平推轴、及一水平安装于第二基座上的第二千斤顶；所述水平推轴沿轴向设有一第二限位部和一第一齿条组，所述水平推轴通过两第二支座套筒水平安装于第二基座上，所述第二支座套筒的内壁设有与该第一齿条组相啮合的第二齿条组，该水平推轴的左端部设有一与混凝土构件另一端连接的第二加载端板，该水平推轴的右端部通过一第二感应器与第二千斤顶连接，且该水平推轴上设有一与该第二限位部匹配的第二卡位件，所述第二卡位件位于第二加载端板与第二支座套筒之间；The pressure loading mechanism includes a second base, a horizontal push shaft, and a second jack horizontally installed on the second base; the horizontal push shaft is axially provided with a second limit portion and A first rack group, the horizontal push shaft is horizontally installed on the second base through two second support sleeves, and the inner wall of the second support sleeve is provided with a The second rack group, the left end of the horizontal push shaft is provided with a second loading end plate connected to the other end of the concrete member, the right end of the horizontal push shaft is connected to the second jack through a second inductor, And the horizontal push shaft is provided with a second clamping part matched with the second limiting part, and the second clamping part is located between the second loading end plate and the second support sleeve;
所述第一感应器与第二感应器均与一数显读数仪连接。Both the first sensor and the second sensor are connected with a digital display reading instrument.
进一步地，所述第一限位部为一第二齿牙组，所述第一卡位件由两第一半圆形锁片组成，两所述第一半圆形锁片通过螺母锁付，其中一所述第一半圆形锁片上设有与第一齿牙组相啮合匹配的第三齿牙组，另一所述第一半圆形锁片上设有与第二齿牙组相啮合匹配的第四齿牙组。Further, the first limiting part is a second set of teeth, and the first retaining member is composed of two first semicircular locking pieces, and the two first semicircular locking pieces are locked together by nuts. , wherein one of the first semicircular lock pieces is provided with a third tooth set that engages with the first set of teeth, and the other said first semicircular lock piece is provided with a third tooth set that matches the second set of teeth. Engage the matching fourth tooth set.
进一步地，所述第二限位部为一第五齿牙组，所述第二卡位件由两第二半圆形锁片组成，两所述第二半圆形锁片通过螺母锁付，其中一所述第二半圆形锁片上设有与第五齿牙组相啮合匹配的第六齿牙组。Further, the second limiting portion is a fifth set of teeth, the second retaining member is composed of two second semicircular locking pieces, and the two second semicircular locking pieces are locked by nuts. , wherein one of the second semicircular locking pieces is provided with a sixth tooth set meshing with the fifth tooth set.
进一步地，该试验装置还包括两分别焊接于混凝土构件两端的加载板，所述第一加载端板通过一所述加载板与混凝土构件一端连接，所述第二加载端板通过另一所述加载板与混凝土构件另一端连接。Further, the test device also includes two loading plates respectively welded to both ends of the concrete member, the first loading end plate is connected to one end of the concrete member through one of the loading plates, and the second loading end plate is connected to one end of the concrete member through the other. The loading plate is attached to the other end of the concrete member.
进一步地，所述加载板包括一与混凝土构件内钢筋相焊接的加载板本体、一预埋于混凝土构件内的内陷端板，所述内陷端板焊接于加载板本体；两所述加载板本体与第一加载端板、第二加载端板分别通过螺母固紧连接。Further, the loading plate includes a loading plate body welded to the steel bars in the concrete member, an inset end plate embedded in the concrete member, and the inset end plate is welded to the loading plate body; the two loading plates The plate body is tightly connected with the first loading end plate and the second loading end plate through nuts respectively.
进一步地，所述水平滚轴的左端部设有一第一半球形端板，所述第一基座上与水平滚轴的左端部相抵处设有一第二半球形端板，所述第一半球形端板与第二半球形端板相匹配。Further, a first hemispherical end plate is provided on the left end of the horizontal roller, and a second hemispherical end plate is provided on the first base against the left end of the horizontal roller, and the first half The spherical end plate mates with the second hemispherical end plate.
本发明的有益效果在于：The beneficial effects of the present invention are:
整个试验装置结构简单紧凑、耗费材料较少，能够安全有效地将扭矩作用在混凝土构件上，使得混凝土构件沿着轴心受扭；通过第一千斤顶与第一卡位件配合、第二千斤顶与第二卡位件配合，不仅能够长时间保持所施加的压力与扭矩损伤荷载，而且能够对混凝土构件所受到的扭矩、压力进行调整；另外，整个实验装置中扭矩加载机构与压力加载机构之间相互不会造成干扰，能够根据需要的分别有效地施加压力和扭矩荷载。The whole test device is simple and compact in structure, consumes less material, and can safely and effectively apply torque to the concrete member, so that the concrete member is torsion along the axis; The jack cooperates with the second clamping part, not only can maintain the applied pressure and torque damage load for a long time, but also can adjust the torque and pressure on the concrete member; in addition, the torque loading mechanism and pressure in the whole experimental device The loading mechanisms will not interfere with each other, and can effectively apply pressure and torque loads as required.
【附图说明】【Description of drawings】
下面参照附图结合实施例对本发明作进一步的描述。The present invention will be further described below with reference to the accompanying drawings and embodiments.
图1是本发明对混凝土构件施工持久压扭损伤荷载的试验装置的示意图。Fig. 1 is the schematic diagram of the test device of the present invention to the concrete member construction lasting compressive torsional damage load.
图2是本发明中扭矩加载机构的局部示意图。Fig. 2 is a partial schematic diagram of the torque loading mechanism in the present invention.
图3是本发明中垂直推轴与第一卡位件的示意图。Fig. 3 is a schematic diagram of the vertical push shaft and the first locking member in the present invention.
图4是本发明中压力加载机构的局部示意图。Fig. 4 is a partial schematic view of the pressure loading mechanism in the present invention.
图5是本发明中第二卡位件的示意图。Fig. 5 is a schematic diagram of the second locking member in the present invention.
图6是本发明中加载板的示意图。Fig. 6 is a schematic diagram of a loading plate in the present invention.
【具体实施方式】【detailed description】
请结合参阅图1至图6，本发明对混凝土构件施工持久压扭损伤荷载的试验装置100，该试验装置100包括一扭矩加载机构1和一压力加载机构2，所述扭矩加载机构1与压力加载机构2分别与混凝土构件200的两端连接。Please refer to Fig. 1 to Fig. 6, the test device 100 of the present invention is applied to the permanent compressive torsional damage load of concrete members, the test device 100 includes a torque loading mechanism 1 and a pressure loading mechanism 2, the torque loading mechanism 1 and the pressure The loading mechanism 2 is respectively connected to both ends of the concrete member 200 .
扭矩加载机构1包括一第一基座11、一水平滚轴12、一垂直推轴13、一推轴套筒14、及一垂直安装于第一基座11的第一千斤顶15；所述水平滚 轴12通过两第一支座套筒16水平安装于第一基座11，即水平滚轴12穿过两第一支座套筒16，所述水平滚轴12上焊接有一第一齿轮121，该水平滚轴12的左端部抵于第一基座11，该水平滚轴12的右端部设有一与混凝土构件200一端连接的第一加载端板122；所述推轴套筒14垂直立设于第一基座11上，所述垂直推轴13穿设于推轴套筒14，所述垂直推轴13沿轴向设有一第一限位部131和一第一齿牙组(未图示)，所述第一限位部131与第一齿牙组132相背设置，所述第一齿牙组与第一齿轮121相啮合，该垂直推轴13的首端上设有一与该第一限位部131匹配的第一卡位件17，且该垂直推轴13的尾端通过一第一感应器18与第一千斤顶15连接。The torque loading mechanism 1 includes a first base 11, a horizontal roller 12, a vertical push shaft 13, a push shaft sleeve 14, and a first jack 15 vertically installed on the first base 11; The horizontal roller 12 is horizontally installed on the first base 11 through two first support sleeves 16, that is, the horizontal roller 12 passes through the two first support sleeves 16, and a first Gear 121, the left end of the horizontal roller 12 is against the first base 11, the right end of the horizontal roller 12 is provided with a first loading end plate 122 connected to one end of the concrete member 200; the push shaft sleeve 14 Standing vertically on the first base 11, the vertical push shaft 13 passes through the push shaft sleeve 14, and the vertical push shaft 13 is provided with a first stopper 131 and a first set of teeth along the axial direction (not shown), the first limiting portion 131 is arranged opposite to the first tooth set 132, and the first tooth set is meshed with the first gear 121, and the head end of the vertical push shaft 13 is provided with There is a first locking member 17 matched with the first limiting portion 131 , and the tail end of the vertical push shaft 13 is connected to the first jack 15 through a first sensor 18 .
所述压力加载机构2包括一第二基座21、一水平推轴22、及一水平安装于第二基座21上的第二千斤顶23；所述水平推轴22沿轴向设有一第二限位部221和一第一齿条组222，所述水平推轴22通过两第二支座套筒24水平安装于第二基座21上，即水平推轴22穿过两第二支座套筒24，所述第二支座套筒24的内壁设有与该第一齿条组222相啮合的第二齿条组241，该水平推轴22的左端部设有一与混凝土构件200另一端连接的第二加载端板223，该水平推轴22的右端部通过一第二感应器25与第二千斤顶23连接，且该水平推轴22上设有一与该第二限位部221匹配的第二卡位件26，所述第二卡位件26位于第二加载端板223与第二支座套筒24之间。The pressure loading mechanism 2 includes a second base 21, a horizontal push shaft 22, and a second jack 23 horizontally installed on the second base 21; the horizontal push shaft 22 is provided with a The second limiting part 221 and a first rack group 222, the horizontal push shaft 22 is horizontally installed on the second base 21 through two second support sleeves 24, that is, the horizontal push shaft 22 passes through the two second The support sleeve 24, the inner wall of the second support sleeve 24 is provided with the second rack set 241 meshed with the first rack set 222, the left end of the horizontal push shaft 22 is provided with a concrete component The second loading end plate 223 connected to the other end of 200, the right end of the horizontal push shaft 22 is connected with the second jack 23 through a second inductor 25, and the horizontal push shaft 22 is provided with a The position part 221 is matched with the second locking member 26 , and the second locking member 26 is located between the second loading end plate 223 and the second seat sleeve 24 .
所述第一感应器18与第二感应器25均与一数显读数仪(未图示)连接，即第一感应器18与第二感应器25感应到的相应数值在数显读数仪，第一感应器18、第二感应器25、及数显读数仪的设置，能够对第一千斤顶15与第二千斤顶23施加的推力实行实时的跟踪。Both the first sensor 18 and the second sensor 25 are connected to a digital display reading instrument (not shown), that is, the corresponding values sensed by the first sensor 18 and the second sensor 25 are displayed on the digital display reading instrument, The setting of the first sensor 18, the second sensor 25, and the digital display reading instrument can implement real-time tracking of the thrust applied by the first jack 15 and the second jack 23 .
扭矩加载机构1的工作原理：第一千斤顶15对推轴套筒14内的垂直推轴13产生垂直向上的推力，该推力的大小被第一感应器18所感应并显示于数显读数仪上，且该推力使得垂直推轴13向上移动，则带动与垂直推轴13上第一齿轮组啮合的第一齿轮121转动，从而带动水平滚轴12转动，因为混凝土构件200与水平滚轴12右端部上的第一加载端板122连接，所以水平滚轴12的转动相当于对混凝土构件200施加了扭矩，其大小为第一千斤顶15的大小乘以第一齿轮121的半径；当数显读数仪上所显示的数值达到设计要求之后，将第一卡位件17加持于第一限位部131，使得垂直推轴13停止垂直方向上的移动，则水平滚轴12停止转动，进而对混凝土构件200施加持久性的扭矩。The working principle of the torque loading mechanism 1: the first jack 15 generates a vertical upward thrust to the vertical push shaft 13 inside the push shaft sleeve 14, and the magnitude of the thrust is sensed by the first sensor 18 and displayed on the digital display instrument, and the thrust makes the vertical push shaft 13 move upwards, then drives the first gear 121 meshed with the first gear set on the vertical push shaft 13 to rotate, thereby driving the horizontal roller 12 to rotate, because the concrete member 200 and the horizontal roller The first loading end plate 122 on the right end of 12 is connected, so the rotation of the horizontal roller 12 is equivalent to applying a torque to the concrete member 200, and its magnitude is the size of the first jack 15 multiplied by the radius of the first gear 121; When the value displayed on the digital display readout meets the design requirements, the first clamping member 17 is added to the first limiting part 131, so that the vertical push shaft 13 stops moving in the vertical direction, and the horizontal roller 12 stops rotating. , and then apply a persistent torque to the concrete member 200 .
压力加载机构2的工作原理：第二千斤顶23对水平推轴22产生水平向左(即混凝土构件200所在的方向)的推力，该推力的大小被第二感应器25所感应并显示于数显读数仪上，且该推力使得水平推轴22沿轴向移动对混凝土构件200施加压力，且通过第一加载端板122将所施加的压力均匀地传给混凝土构件200；当数显读数仪上所显示的数值达到设计要求之后，将第一卡位件26加持于第一限位部221，使得水平推轴22停止轴向移动，进而对混凝土构件200施加持久性的压力。The working principle of the pressure loading mechanism 2: the second jack 23 generates a horizontal thrust to the left (that is, the direction where the concrete member 200 is located) to the horizontal push shaft 22, and the magnitude of the thrust is sensed by the second sensor 25 and displayed on On the digital display reading instrument, and the thrust makes the horizontal push shaft 22 move axially to apply pressure to the concrete member 200, and the applied pressure is evenly transmitted to the concrete member 200 through the first loading end plate 122; when the digital display reading After the value displayed on the instrument meets the design requirements, the first clamping member 26 is clamped on the first limiting part 221, so that the horizontal push shaft 22 stops axial movement, and then exerts persistent pressure on the concrete member 200.
需要说明的是，压力加载机构2中，水平推轴22上第一齿条组222与第二支座套筒24上第二齿条组24的设置，其目的是为了通过第二齿条组24与第一齿条组222的啮合咬紧以限制水平推轴22的旋转，即使得水平推轴22只能发生轴向运动，从而限制了压力加载端的扭转；扭矩加载机构1中，通过两第一支座套筒16限制水平滚轴12的轴向外平移，保留水平滚轴12的轴向扭转和轴向运动，即两个支座套筒16可以保证水平滚轴12在扭矩加载过程中不发生偏移，使水平滚轴12绕着中心转动。It should be noted that in the pressure loading mechanism 2, the setting of the first rack group 222 on the horizontal push shaft 22 and the second rack group 24 on the second support sleeve 24 is for the purpose of passing the second rack group 24 is engaged with the first rack group 222 to limit the rotation of the horizontal push shaft 22, that is, the horizontal push shaft 22 can only move axially, thereby limiting the twist of the pressure loading end; in the torque loading mechanism 1, through two The first support sleeve 16 restricts the axial outward translation of the horizontal roller 12, and retains the axial torsion and axial movement of the horizontal roller 12, that is, the two support sleeves 16 can ensure that the horizontal roller 12 is in the process of torque loading. Offset does not occur in the middle, make the horizontal roller 12 rotate around the center.
其中，第一限位部131为一第二齿牙组131a，所述第一卡位件17由两第一半圆形锁片(分别为第一半圆形锁片171、第一半圆形锁片172)组成，第一半圆形锁片171与第一半圆形锁片172通过螺母173锁付，其中一所述第一半圆形锁片即第一半圆形锁片171上设有与第一齿牙组(未图示)相啮合匹配的第三齿牙组1711，另一所述第一半圆形锁片即第一半圆形锁片172上设有与第二齿牙组131a相啮合匹配的第四齿牙组(未图示)；将第一半圆形锁片171上的第三齿牙组1711对准第一齿牙组、第一半圆形锁片172上的第四第四齿牙组对准第二齿牙组131a并扣合于垂直推轴13的垂直推轴12的首端上，并通过螺母173锁付，则第三齿牙组1711与第一齿牙组啮合咬紧、第四第四齿牙组与第二齿牙组131a啮合咬紧，从而限制了垂直推轴12的移动。Wherein, the first limiting portion 131 is a second set of teeth 131a, and the first locking member 17 is composed of two first semicircular locking pieces (respectively the first semicircular locking piece 171, the first semicircular locking piece 171, the first semicircular locking piece shaped locking piece 172), the first semicircular locking piece 171 and the first semicircular locking piece 172 are locked by a nut 173, and one of the first semicircular locking pieces is the first semicircular locking piece 171 There is a third tooth set 1711 that is engaged and matched with the first set of teeth (not shown), and the other first semicircular locking piece, that is, the first semicircular locking piece 172 is provided with the first semicircular locking piece 172. The second tooth group 131a meshes with the fourth tooth group (not shown); align the third tooth group 1711 on the first semicircular locking piece 171 with the first tooth group, the first semicircular The fourth and fourth tooth groups on the locking piece 172 are aligned with the second tooth group 131a and fastened on the head end of the vertical push shaft 12 of the vertical push shaft 13, and locked by the nut 173, then the third tooth The set 1711 engages with the first set of teeth, and the fourth set of teeth engages with the second set of teeth 131a, thereby limiting the movement of the vertical push shaft 12 .
第二限位部221为一第五齿牙组221a，所述第二卡位件26由两第二半圆形锁片(分别为第二半圆锁片261、第二半圆锁片262)组成，第二半圆锁片261与第二半圆锁片262通过螺母263锁付，其中一所述第二半圆形锁片即第二半圆锁片261上设有与第五齿牙组221a相啮合匹配的第六齿牙组2611；将第二半圆锁片261上第六齿牙组2611对准第五齿牙组221a，并将第二半圆锁片261、第二半圆锁片262扣合于水平推轴22上，且通过螺母263锁付，则第六齿牙组2611与第五齿牙组221a啮合咬紧，从而限制了水平推轴22的移动。The second limiting part 221 is a fifth tooth set 221a, and the second locking member 26 is composed of two second semicircular locking pieces (respectively the second semicircular locking piece 261 and the second semicircular locking piece 262) , the second semicircular locking piece 261 and the second semicircular locking piece 262 are locked and paid by the nut 263, and one of the second semicircular locking pieces, that is, the second semicircular locking piece 261 is provided with the fifth tooth set 221a. Matching sixth tooth group 2611; align the sixth tooth group 2611 on the second semicircular locking piece 261 with the fifth tooth group 221a, and buckle the second semicircular locking piece 261 and the second semicircular locking piece 262 on On the horizontal push shaft 22 , and locked by the nut 263 , the sixth tooth set 2611 engages with the fifth tooth set 221 a, thereby restricting the movement of the horizontal push shaft 22 .
为了保证混凝土构件200与第一加载端板122、第二加载端板223的可靠连接，并使扭力能够有效地传递到混凝土构件200上，则该试验装置100还包括了两分别焊接于混凝土构件200两端的加载板3，所述第一加载端板122通过一所述加载板3与混凝土构件200一端连接，所述第二加载端板223通过另一所述加载板3与混凝土构件200另一端连接；具体地，加载板3包括一与混凝土构件200内钢筋201相焊接的加载板本体31、一预埋于混凝土构件200内的内陷端板32，所述内陷端板32焊接于加载板本体31；两所述加载板本体31与第一加载端板122、第二加载端板223分别通过螺母33固紧连接。In order to ensure the reliable connection between the concrete member 200 and the first loading end plate 122 and the second loading end plate 223, and to enable the torsion force to be effectively transmitted to the concrete member 200, the test device 100 also includes two parts respectively welded to the concrete member. The loading plates 3 at both ends of 200, the first loading end plate 122 is connected to one end of the concrete member 200 through one of the loading plates 3, and the second loading end plate 223 is connected to the other end of the concrete member 200 through another loading plate 3 Connected at one end; specifically, the loading plate 3 includes a loading plate body 31 welded to the steel bar 201 in the concrete member 200, an inset end plate 32 pre-embedded in the concrete member 200, and the inset end plate 32 is welded to the The loading plate body 31 ; the two loading plate bodies 31 are connected to the first loading end plate 122 and the second loading end plate 223 through nuts 33 respectively.
所述水平滚轴12的左端部设有一第一半球形端板191，所述第一基座11上与水平滚轴12的左端部相抵处设有一第二半球形端板192，所述第一半球形端板191与第二半球形端板192相匹配；第一半球形端板191与第二半球形端板192对碰在一起，能够减少水平滚轴12的左端部与第一基座11的接触面积，避免了由于压力的作用使得水平滚轴12的左端部与第一基座11的摩擦力增大，造成扭矩施加的困难。The left end of the horizontal roller 12 is provided with a first hemispherical end plate 191, and the first base 11 is provided with a second hemispherical end plate 192 at the left end of the horizontal roller 12. The hemispherical end plate 191 matches the second hemispherical end plate 192; The contact area of the seat 11 avoids the difficulty in applying torque due to the increased frictional force between the left end of the horizontal roller 12 and the first base 11 due to the pressure.
本发明应用时，先将混凝土构件200安装于本发明实验装置100上，之后经由扭矩加载机构1对其施加扭矩损伤载荷，当扭矩损伤荷载达到目标值后，锁住第一千斤顶15，并将第一卡位件17加持于第一限位部131以限制垂直推轴13的运动从而对施加的扭矩进行持荷，若发现在扭矩持荷过程中第一传感器18感应到的力值有所下降，可先解下第一卡位件17，通过第一千 斤顶15把荷载提高到目标值，再将第一卡位件17重新卡加持于第一限位部131；且经由压力加载机构2对混凝土构件200施加压力损伤荷载，当压力损伤荷载达到目标值后，锁住第二千斤顶23，并将第二卡位件26加持于第二限位部221以限制水平推轴22的移动从而对施加的压力进行持荷，若发现在扭矩持荷过程中第二传感器25感应到的力值有所下降，可先解下第二卡位件26，通过第二千斤顶23把荷载提高到目标值，再将第二卡位件26重新卡加持于第二限位部221。When the present invention is applied, the concrete member 200 is first installed on the experimental device 100 of the present invention, and then the torque damage load is applied to it through the torque loading mechanism 1. When the torque damage load reaches the target value, the first jack 15 is locked, And the first clamping member 17 is applied to the first limiting part 131 to limit the movement of the vertical push shaft 13 so as to sustain the applied torque. If it is found that the force value sensed by the first sensor 18 during the torque sustaining process is If there is a decline, the first clamping member 17 can be untied first, the load can be increased to the target value through the first jack 15, and then the first clamping member 17 can be clamped and supported on the first limiting part 131 again; and through The pressure loading mechanism 2 applies a pressure damage load to the concrete member 200. When the pressure damage load reaches the target value, the second jack 23 is locked, and the second locking member 26 is clamped on the second limiting part 221 to limit the level The movement of the push shaft 22 sustains the applied pressure. If it is found that the force value sensed by the second sensor 25 decreases during the torque sustaining process, the second clamping member 26 can be untied first, and the second thousand The jack 23 raises the load to the target value, and then clamps and supports the second locking member 26 on the second limiting portion 221 again.
综上，本发明试验装置结构简单紧凑、耗费材料较少，能够安全有效地将扭矩作用在混凝土构件上，使得混凝土构件沿着轴心受扭；通过第一千斤顶与第一卡位件配合、第二千斤顶与第二卡位件配合，不仅能够长时间保持所施加的压力与扭矩损伤荷载，而且能够对混凝土构件所受到的扭矩、压力进行调整；另外，整个实验装置中扭矩加载机构与压力加载机构之间相互不会造成干扰，能够根据需要的分别有效地施加压力和扭矩荷载。To sum up, the test device of the present invention has a simple and compact structure, consumes less material, and can safely and effectively apply torque to the concrete member, so that the concrete member is torsion along the axis; through the first jack and the first locking member The cooperation between the second jack and the second locking part can not only maintain the applied pressure and torque damage load for a long time, but also adjust the torque and pressure on the concrete member; in addition, the torque in the whole experimental device The loading mechanism and the pressure loading mechanism will not interfere with each other, and can effectively apply pressure and torque loads respectively according to needs.
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