CN114753242B - Bridge beam falling prevention device with buffering effect - Google Patents
Bridge beam falling prevention device with buffering effect Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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- E01D19/00—Structural or constructional details of bridges
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Abstract
Description
技术领域Technical Field
本发明属于桥梁抗震技术和加固方法技术领域，特别是涉及一种具有缓冲效果的桥梁防落梁装置。The invention belongs to the technical field of bridge earthquake resistance technology and reinforcement method, and in particular relates to a bridge beam-falling prevention device with a buffering effect.
背景技术Background technique
我国桥梁多为简支梁桥、连续梁桥，其梁体由若干片箱梁或T梁构成，梁体直接搁置在板式橡胶支座上，支座与梁体或盖梁无连接措施。在地震作用下，梁体与支座之间发生较大的相对滑动，容易引起落梁风险。为了避免发生落梁，在纵桥方向上，常见的构造措施包括设置限位装置和连梁装置；在横桥方向上，一般在桥墩盖梁两侧或桥台台帽两侧设置钢筋混凝土块防落梁挡块。但在地震作用下，挡块与主梁直接相撞引起巨大的冲击力，往往使得挡块发生斜截面剪切破坏，甚至可能对盖梁和桥台造成无法挽回的破坏。此外，上述构造措施一旦在地震作用下遭受破坏便难以修复和更换，大大增加震后修复所需的时间和资源。Most of the bridges in my country are simply supported beam bridges and continuous beam bridges. The beam body is composed of several box beams or T beams. The beam body is directly placed on the plate rubber bearing, and there is no connection measure between the bearing and the beam body or the cap beam. Under the action of earthquake, there is a large relative sliding between the beam body and the bearing, which is easy to cause the risk of beam falling. In order to avoid the occurrence of beam falling, in the longitudinal direction of the bridge, common structural measures include setting limit devices and connecting beam devices; in the transverse direction of the bridge, reinforced concrete blocks are generally set on both sides of the pier cap beam or the abutment cap to prevent beam falling. However, under the action of earthquake, the block directly collides with the main beam, causing a huge impact force, which often causes the block to suffer oblique cross-section shear failure, and may even cause irreparable damage to the cap beam and the abutment. In addition, once the above-mentioned structural measures are damaged by the earthquake, they are difficult to repair and replace, which greatly increases the time and resources required for post-earthquake repair.
发明内容Summary of the invention
本发明的目的是提供一种具有缓冲效果的桥梁防落梁装置，在横桥向和纵桥向同时生效，使得碰撞作用以一种平稳渐变的方式施加于盖梁或桥台上，避免瞬时碰撞引起巨大的冲击力而导致结构损伤，保护桥梁的其他限位构造。The purpose of the present invention is to provide a bridge beam anti-falling device with a buffering effect, which is effective in both the transverse and longitudinal directions of the bridge, so that the collision effect is applied to the cap beam or abutment in a smooth and gradual manner, avoiding huge impact force caused by instantaneous collision and causing structural damage, and protecting other limiting structures of the bridge.
为实现上述目的，本发明提供了如下方案：一种具有缓冲效果的桥梁防落梁装置，包括To achieve the above object, the present invention provides the following solution: a bridge beam-falling prevention device with a buffering effect, comprising:
上部装置，所述上部装置与梁体底端固定连接；An upper device, wherein the upper device is fixedly connected to the bottom end of the beam body;
下部装置，所述下部装置与盖梁顶端固定连接；A lower device, wherein the lower device is fixedly connected to the top end of the cap beam;
所述上部装置与所述下部装置上下对应设置，所述下部装置的外径尺寸由下到上逐渐减小，所述上部装置底端与所述下部装置顶端之间留有竖直间隙和水平间隙。The upper device and the lower device are arranged correspondingly up and down, the outer diameter of the lower device gradually decreases from bottom to top, and a vertical gap and a horizontal gap are left between the bottom end of the upper device and the top end of the lower device.
优选的，所述上部装置包括上连接钢板，所述上连接钢板与所述梁体通过上连接螺栓可拆卸连接，所述上连接钢板底端固定连接有套筒，所述下部装置上端位于所述套筒内部，所述下部装置上端与所述上连接钢板底端之间、所述下部装置底端与所述套筒底端之间留有竖直间隙。Preferably, the upper device includes an upper connecting steel plate, which is detachably connected to the beam body by upper connecting bolts, and the bottom end of the upper connecting steel plate is fixedly connected to a sleeve, and the upper end of the lower device is located inside the sleeve, and a vertical gap is left between the upper end of the lower device and the bottom end of the upper connecting steel plate, and between the bottom end of the lower device and the bottom end of the sleeve.
优选的，所述下部装置包括下连接钢板，所述下连接钢板与所述盖梁通过下连接螺栓可拆卸连接，所述下连接钢板顶端固定连接有缓冲部，所述缓冲部的外径尺寸由下到上逐渐减小，所述缓冲部上端位于所述套筒内部，所述缓冲部上端与所述上连接钢板底端之间、所述缓冲部底端与所述套筒底端之间留有竖直间隙。Preferably, the lower device includes a lower connecting steel plate, which is detachably connected to the cap beam by lower connecting bolts, and a buffer portion is fixedly connected to the top end of the lower connecting steel plate, and the outer diameter of the buffer portion gradually decreases from bottom to top, and the upper end of the buffer portion is located inside the sleeve, and a vertical gap is left between the upper end of the buffer portion and the bottom end of the upper connecting steel plate, and between the bottom end of the buffer portion and the bottom end of the sleeve.
优选的，所述缓冲部包括横桥向曲线滑道，所述横桥向曲线滑道与所述下连接钢板顶端固定连接，所述横桥向曲线滑道两端设置为弧形段，所述弧形段的底端固定连接有水平段，所述弧形段的顶端固定连接有竖直段，所述横桥向曲线滑道的两侧分别固定连接有纵桥向第一曲线滑道和两个纵桥向第二曲线滑道，两个所述纵桥向第二曲线滑道分别位于所述纵桥向第一曲线滑道两侧，所述纵桥向第一曲线滑道、所述纵桥向第二曲线滑道底端与所述下连接钢板顶端固定连接。Preferably, the buffer portion includes a transverse bridge curved slide, which is fixedly connected to the top of the lower connecting steel plate, and both ends of the transverse bridge curved slide are arranged as arc sections, the bottom end of the arc section is fixedly connected with a horizontal section, and the top of the arc section is fixedly connected with a vertical section, and the two sides of the transverse bridge curved slide are respectively fixedly connected with a longitudinal bridge first curved slide and two longitudinal bridge second curved slides, and the two longitudinal bridge second curved slides are respectively located on both sides of the longitudinal bridge first curved slide, and the bottom ends of the longitudinal bridge first curved slide and the longitudinal bridge second curved slide are fixedly connected to the top of the lower connecting steel plate.
优选的，所述纵桥向第一曲线滑道的侧壁设置为弧形段，所述弧形段的底端固定连接有水平段，所述弧形段的顶端固定连接有竖直段，所述纵桥向第二曲线滑道的侧壁设置为弧形段，所述弧形段的底端固定连接有水平段。Preferably, the side wall of the longitudinal bridge toward the first curved slide is set as an arc segment, the bottom end of the arc segment is fixedly connected with a horizontal segment, the top end of the arc segment is fixedly connected with a vertical segment, and the side wall of the longitudinal bridge toward the second curved slide is set as an arc segment, the bottom end of the arc segment is fixedly connected with a horizontal segment.
优选的，所述套筒底端位于所述横桥向曲线滑道、所述纵桥向第一曲线滑道、所述纵桥向第二曲线滑道的水平段上方，所述横桥向曲线滑道、所述纵桥向第一曲线滑道、所述纵桥向第二曲线滑道的弧形段与所述竖直段位于所述套筒内部。Preferably, the bottom end of the sleeve is located above the horizontal sections of the transverse bridge curved slide, the longitudinal bridge first curved slide, and the longitudinal bridge second curved slide, and the arc sections of the transverse bridge curved slide, the longitudinal bridge first curved slide, and the longitudinal bridge second curved slide and the vertical sections are located inside the sleeve.
优选的，所述横桥向曲线滑道由横桥向钢板加工而成，所述纵桥向第一曲线滑道与所述纵桥向第二曲线滑道由纵桥向钢板加工而成。Preferably, the transverse bridge curved slideway is processed from a transverse bridge steel plate, and the longitudinal bridge first curved slideway and the longitudinal bridge second curved slideway are processed from a longitudinal bridge steel plate.
优选的，所述横桥向曲线滑道、所述纵桥向第一曲线滑道、所述纵桥向第二曲线滑道的弧形段为椭圆曲线，所述椭圆曲线的最大仰角为θ，所述最大仰角为θ的计算公式为Preferably, the arc segments of the transverse bridge curved slideway, the longitudinal bridge first curved slideway, and the longitudinal bridge second curved slideway are elliptical curves, the maximum elevation angle of the elliptical curve is θ, and the calculation formula for the maximum elevation angle θ is:
其中α为梁体最大加速度，g为重力加速度，μ为钢材与钢材的动摩擦系数。Where α is the maximum acceleration of the beam, g is the acceleration due to gravity, and μ is the coefficient of kinetic friction between steel.
优选的，所述套筒底端与所述横桥向曲线滑道、所述纵桥向第一曲线滑道、所述纵桥向第二曲线滑道的弧形段底端之间预留水平间隙Δ1，满足Δ1＞ΔL，其中ΔL为温度作用下主梁纵向变形，ΔL的计算公式为Preferably, a horizontal gap Δ 1 is reserved between the bottom end of the sleeve and the bottom ends of the arc sections of the transverse bridge curved slideway, the first longitudinal bridge curved slideway, and the second longitudinal bridge curved slideway, satisfying Δ 1 > ΔL, where ΔL is the longitudinal deformation of the main beam under the action of temperature, and the calculation formula of ΔL is:
ΔL＝a×Δt×LΔL＝a×Δt×L
其中a为温度变形系数；Δt为变化温度；L为主梁长度。Where a is the temperature deformation coefficient; Δt is the change temperature; L is the length of the main beam.
优选的，所述套筒内侧壁上部与所述横桥向曲线滑道、所述纵桥向第一曲线滑道、所述纵桥向第二曲线滑道的竖直段之间的水平间隙为Δ2，满足Δ2＜d，其中d为伸缩缝宽度。Preferably, a horizontal gap between the upper portion of the inner wall of the sleeve and the vertical sections of the transverse bridge curved slideway, the first longitudinal bridge curved slideway, and the second longitudinal bridge curved slideway is Δ 2 , satisfying Δ 2 ＜d, where d is the expansion joint width.
本发明具有如下技术效果：The present invention has the following technical effects:
1、正常使用阶段，该装置不发挥作用，上部装置与下部装置不接触，可以防止由温度变化引起梁体的纵向变形对装置造成损伤。1. During normal use, the device does not function and the upper device does not contact the lower device, which can prevent the longitudinal deformation of the beam caused by temperature changes from causing damage to the device.
2、在多遇地震下，该装置发挥作用，上部装置与下部装置接触并沿着连续渐变的路径向上滑动，将碰撞作用平稳渐变地施加给盖梁，降低瞬时碰撞冲击力，同时上部装置产生一定的塑性变形，消耗一部分地震能量。2. Under frequent earthquakes, the device comes into play. The upper device contacts the lower device and slides upward along a continuously gradual path, applying the collision effect to the cap beam smoothly and gradually, reducing the instantaneous collision impact force. At the same time, the upper device produces a certain amount of plastic deformation, consuming part of the earthquake energy.
3、在罕遇地震下，当主梁水平位移达到预定值时，上部装置受到下部装置顶部的直接阻挡，防止主梁进一步位移。3. In rare earthquakes, when the horizontal displacement of the main beam reaches a predetermined value, the upper device is directly blocked by the top of the lower device to prevent further displacement of the main beam.
4、同一个盖梁上可以根据需求设置多个装置，以达到更好的效果。4. Multiple devices can be set on the same cap beam according to needs to achieve better results.
5、该装置具有构造简明，易于制造，成本低廉，方便快速组装和拆卸等优点，因此该装置可作为牺牲结构，以达到保护桥梁的其他限位构造措施，降低震后修复时间和资源成本。5. The device has the advantages of simple structure, easy manufacturing, low cost, convenient and quick assembly and disassembly, etc. Therefore, the device can be used as a sacrificial structure to achieve other limiting structural measures to protect the bridge and reduce the time and resource costs of post-earthquake repair.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
图1为本发明正视图；Fig. 1 is a front view of the present invention;
图2为本发明侧视图；Fig. 2 is a side view of the present invention;
图3为本发明在桥梁上的安装位置；FIG3 is an installation position of the present invention on a bridge;
图4为本发明上部装置示意图；FIG4 is a schematic diagram of the upper device of the present invention;
图5为本发明下部装置拼装流程图；FIG5 is a flowchart of assembling the lower device of the present invention;
图6为本发明下部装置示意图；Fig. 6 is a schematic diagram of the lower device of the present invention;
图7为弧形段最大仰角示意图；FIG7 is a schematic diagram of the maximum elevation angle of the arc segment;
图8为实施例二的上部结构示意图；FIG8 is a schematic diagram of the upper structure of the second embodiment;
图9为实施例二的下部结构示意图。FIG. 9 is a schematic diagram of the lower structure of the second embodiment.
其中，1、上连接钢板；2、套筒；3、上连接螺栓；4、下连接钢板；5、横桥向曲线滑道；6、纵桥向第一曲线滑道；7、纵桥向第二曲线滑道；8、下连接螺栓；9、防落梁装置；10、梁体；11、垫石；12、支座；13、盖梁；14、横桥向钢板；15、纵桥向钢板。Among them, 1. upper connecting steel plate; 2. sleeve; 3. upper connecting bolt; 4. lower connecting steel plate; 5. transverse bridge to curved slideway; 6. longitudinal bridge to first curved slideway; 7. longitudinal bridge to second curved slideway; 8. lower connecting bolt; 9. anti-beam falling device; 10. beam body; 11. cushion stone; 12. support; 13. cap beam; 14. transverse bridge to steel plate; 15. longitudinal bridge to steel plate.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明作进一步详细的说明。In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
实施例一Embodiment 1
参照图1-7，本发明公开一种具有缓冲效果的桥梁防落梁装置，包括1-7, the present invention discloses a bridge beam-falling prevention device with a buffering effect, comprising:
上部装置，上部装置与梁体10底端固定连接；An upper device, which is fixedly connected to the bottom end of the beam body 10;
下部装置，下部装置与盖梁13顶端固定连接；The lower device is fixedly connected to the top of the cap beam 13;
上部装置与下部装置上下对应设置，下部装置的外径尺寸由下到上逐渐减小，上部装置底端与下部装置顶端之间留有竖直间隙和水平间隙。The upper device and the lower device are arranged correspondingly up and down, the outer diameter of the lower device gradually decreases from bottom to top, and a vertical gap and a horizontal gap are left between the bottom end of the upper device and the top end of the lower device.
进一步优化方案，上部装置包括上连接钢板1，上连接钢板1与梁体10通过上连接螺栓3可拆卸连接，上连接钢板1底端固定连接有套筒2，下部装置上端位于套筒2内部，下部装置上端与上连接钢板1底端之间、下部装置底端与套筒2底端之间留有竖直间隙。A further optimized solution is that the upper device includes an upper connecting steel plate 1, which is detachably connected to the beam body 10 by an upper connecting bolt 3, and the bottom end of the upper connecting steel plate 1 is fixedly connected to a sleeve 2, and the upper end of the lower device is located inside the sleeve 2, and a vertical gap is left between the upper end of the lower device and the bottom end of the upper connecting steel plate 1, and between the bottom end of the lower device and the bottom end of the sleeve 2.
上连接钢板1预留上连接螺栓孔，通过上连接螺栓3与梁体10进行固定连接。The upper connecting steel plate 1 is provided with upper connecting bolt holes, and is fixedly connected to the beam body 10 via upper connecting bolts 3 .
进一步优化方案，下部装置包括下连接钢板4，下连接钢板4与盖梁13通过下连接螺栓8可拆卸连接，下连接钢板4顶端固定连接有缓冲部，缓冲部的外径尺寸由下到上逐渐减小，缓冲部上端位于套筒2内部，缓冲部上端与上连接钢板1底端之间、缓冲部底端与套筒2底端之间留有竖直间隙。A further optimized solution is that the lower device includes a lower connecting steel plate 4, which is detachably connected to the cap beam 13 by a lower connecting bolt 8, and a buffer part is fixedly connected to the top of the lower connecting steel plate 4, and the outer diameter of the buffer part gradually decreases from bottom to top, and the upper end of the buffer part is located inside the sleeve 2, and a vertical gap is left between the upper end of the buffer part and the bottom end of the upper connecting steel plate 1, and between the bottom end of the buffer part and the bottom end of the sleeve 2.
下连接钢板4预留下连接螺栓孔，通过下连接螺栓8与盖梁13进行固定连接。The lower connecting steel plate 4 is provided with connection bolt holes, and is fixedly connected to the cap beam 13 by the lower connecting bolts 8 .
进一步优化方案，缓冲部包括横桥向曲线滑道5，横桥向曲线滑道5与下连接钢板4顶端固定连接，横桥向曲线滑道5两端设置为弧形段，弧形段的底端固定连接有水平段，弧形段的顶端固定连接有竖直段，横桥向曲线滑道5的两侧分别固定连接有纵桥向第一曲线滑道6和两个纵桥向第二曲线滑道7，两个纵桥向第二曲线滑道7分别位于纵桥向第一曲线滑道6两侧，纵桥向第一曲线滑道6、纵桥向第二曲线滑道7底端与下连接钢板4顶端固定连接。A further optimized solution is provided, in which the buffer portion includes a transverse bridge curved slide 5, which is fixedly connected to the top of the lower connecting steel plate 4, and both ends of the transverse bridge curved slide 5 are arranged as arc sections, and the bottom end of the arc section is fixedly connected with a horizontal section, and the top end of the arc section is fixedly connected with a vertical section, and the two sides of the transverse bridge curved slide 5 are respectively fixedly connected with a longitudinal bridge first curved slide 6 and two longitudinal bridge second curved slides 7, and the two longitudinal bridge second curved slides 7 are respectively located on both sides of the longitudinal bridge first curved slide 6, and the bottom ends of the longitudinal bridge first curved slide 6 and the longitudinal bridge second curved slide 7 are fixedly connected to the top of the lower connecting steel plate 4.
进一步优化方案，纵桥向第一曲线滑道6的侧壁设置为弧形段，弧形段的底端固定连接有水平段，弧形段的顶端固定连接有竖直段，纵桥向第二曲线滑道7的侧壁设置为弧形段，弧形段的底端固定连接有水平段。A further optimized solution is that the side wall of the longitudinal bridge toward the first curved slide 6 is set as an arc segment, the bottom end of the arc segment is fixedly connected with a horizontal segment, the top end of the arc segment is fixedly connected with a vertical segment, and the side wall of the longitudinal bridge toward the second curved slide 7 is set as an arc segment, the bottom end of the arc segment is fixedly connected with a horizontal segment.
进一步优化方案，套筒2底端位于横桥向曲线滑道5、纵桥向第一曲线滑道6、纵桥向第二曲线滑道7的水平段上方，横桥向曲线滑道5、纵桥向第一曲线滑道6、纵桥向第二曲线滑道7的弧形段与竖直段位于套筒2内部。According to a further optimization scheme, the bottom end of the sleeve 2 is located above the horizontal sections of the transverse bridge curved slide 5, the longitudinal bridge first curved slide 6, and the longitudinal bridge second curved slide 7, and the arc sections and vertical sections of the transverse bridge curved slide 5, the longitudinal bridge first curved slide 6, and the longitudinal bridge second curved slide 7 are located inside the sleeve 2.
竖直段顶端与上连接钢板1之间预留一定竖向间距，水平段确保套筒2可以平顺的进入弧形段。套筒2为椭圆形空心柱体，以便梁体在任意方向位移时都可以与弧形段贴合。套筒2底部与水平段之间预留一定竖向间距防止在桥梁正常使用阶段时本装置承受竖向荷载。A certain vertical spacing is reserved between the top of the vertical section and the upper connecting steel plate 1, and the horizontal section ensures that the sleeve 2 can smoothly enter the arc section. The sleeve 2 is an elliptical hollow cylinder so that the beam body can fit with the arc section when it moves in any direction. A certain vertical spacing is reserved between the bottom of the sleeve 2 and the horizontal section to prevent the device from bearing vertical loads during the normal use of the bridge.
进一步优化方案，横桥向曲线滑道5由横桥向钢板14加工而成，纵桥向第一曲线滑道6与纵桥向第二曲线滑道7由纵桥向钢板15加工而成。To further optimize the solution, the transverse bridge curved slideway 5 is processed from the transverse bridge steel plate 14 , and the longitudinal bridge first curved slideway 6 and the longitudinal bridge second curved slideway 7 are processed from the longitudinal bridge steel plate 15 .
进一步优化方案，横桥向曲线滑道5、纵桥向第一曲线滑道6、纵桥向第二曲线滑道7的弧形段为椭圆曲线，椭圆曲线的最大仰角为θ，最大仰角为θ的计算公式为Further optimization scheme, the arc segments of the transverse bridge curved slideway 5, the longitudinal bridge first curved slideway 6, and the longitudinal bridge second curved slideway 7 are elliptical curves, the maximum elevation angle of the elliptical curve is θ, and the calculation formula of the maximum elevation angle θ is:
其中α为梁体最大加速度，g为重力加速度，μ为钢材与钢材的动摩擦系数。Where α is the maximum acceleration of the beam, g is the acceleration due to gravity, and μ is the coefficient of dynamic friction between steel.
最大仰角θ确保套筒2不会对弧形段造成剪切破坏而侵入弧形段，最大仰角θ可按物体在坡面上临界静止状态进行计算。The maximum elevation angle θ ensures that the sleeve 2 does not cause shear damage to the arc segment and invade the arc segment. The maximum elevation angle θ can be calculated according to the critical static state of the object on the slope surface.
进一步优化方案，套筒2底端与横桥向曲线滑道5、纵桥向第一曲线滑道6、纵桥向第二曲线滑道7的弧形段底端之间预留水平间隙Δ1，满足Δ1＞ΔL，其中ΔL为温度作用下主梁纵向变形，ΔL的计算公式为Further optimization scheme, a horizontal gap Δ 1 is reserved between the bottom end of the sleeve 2 and the bottom ends of the arc sections of the transverse bridge curved slideway 5, the longitudinal bridge first curved slideway 6, and the longitudinal bridge second curved slideway 7, satisfying Δ 1 > ΔL, where ΔL is the longitudinal deformation of the main beam under the action of temperature, and the calculation formula of ΔL is:
ΔL＝a×Δt×LΔL＝a×Δt×L
其中a为温度变形系数；Δt为变化温度；L为主梁长度。Where a is the temperature deformation coefficient; Δt is the change temperature; L is the length of the main beam.
进一步优化方案，套筒2内侧壁上部与横桥向曲线滑道5、纵桥向第一曲线滑道6、纵桥向第二曲线滑道7的竖直段之间的水平间隙为Δ2，满足Δ2＜d，其中d为伸缩缝宽度。According to a further optimization scheme, the horizontal gap between the upper portion of the inner wall of the sleeve 2 and the vertical sections of the transverse bridge curved slideway 5, the longitudinal bridge first curved slideway 6 and the longitudinal bridge second curved slideway 7 is Δ 2 , satisfying Δ 2 ＜d, where d is the expansion joint width.
水平间距Δ2可以防止梁体纵桥向位移大于伸缩缝宽度而导致邻梁碰撞。The horizontal spacing Δ 2 can prevent the longitudinal displacement of the beam from being greater than the width of the expansion joint, which would cause collision with adjacent beams.
本发明装置的拼装流程为：The assembly process of the device of the present invention is:
1、将套筒2与上连接钢板1焊接在一起形成上部装置。1. Weld the sleeve 2 and the upper connecting steel plate 1 together to form an upper device.
2、将横桥向钢板14加工为横桥向曲线滑道5。2. Process the transverse bridge steel plate 14 into the transverse bridge curved slideway 5.
3、将纵桥向钢板15加工为纵桥向第一曲线滑道6和纵桥向第二曲线滑道7。3. Process the longitudinal bridge steel plate 15 into the longitudinal bridge first curved slideway 6 and the longitudinal bridge second curved slideway 7.
4、将纵桥向第一曲线滑道6和纵桥向第二曲线滑道7焊接在横桥向曲线滑道5上。4. Weld the first curved slideway 6 in the longitudinal direction of the bridge and the second curved slideway 7 in the longitudinal direction of the bridge to the curved slideway 5 in the transverse direction of the bridge.
5、将上述步骤形成的缓冲部与下连接钢板4焊接在一起形成下部装置。5. Weld the buffer part formed in the above steps and the lower connecting steel plate 4 together to form the lower device.
6、上连接板1通过上连接螺栓3与梁体10固定连接。6. The upper connecting plate 1 is fixedly connected to the beam body 10 via the upper connecting bolts 3.
7、下连接板4通过下连接螺栓8与盖梁13固定连接。7. The lower connecting plate 4 is fixedly connected to the cap beam 13 via the lower connecting bolts 8.
盖梁13顶端固定连接有垫石11，垫石11顶端固定连接有支座12，支座12的顶端与梁体10的底端固定连接，本发明的防落梁装置9位于两个垫石11之间，工作时，可以通过套筒2在连续渐变的弧形段上运动，在碰撞时，套筒2可以发生一定塑性变形，使得本发明的装置具备一定的耗能能力，本发明的装置为一种易于更换的可牺牲结构。The top of the cap beam 13 is fixedly connected to a pad stone 11, the top of the pad stone 11 is fixedly connected to a support 12, the top of the support 12 is fixedly connected to the bottom end of the beam body 10, the anti-falling beam device 9 of the present invention is located between the two pad stones 11, and when working, it can move on a continuously gradual arc segment through the sleeve 2, and when colliding, the sleeve 2 can undergo a certain plastic deformation, so that the device of the present invention has a certain energy consumption capacity, and the device of the present invention is a sacrificial structure that is easy to replace.
实施例二：Embodiment 2:
参照图8-9，本实施例与实施例一的却别仅在于，缓冲部不含有纵桥向第二曲线滑道7，可以应用与中小跨径桥梁。8-9 , the difference between this embodiment and the first embodiment is that the buffer portion does not include the second curved slideway 7 in the longitudinal direction of the bridge, and can be applied to small and medium span bridges.
在本发明的描述中，需要理解的是，术语“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
以上所述的实施例仅是对本发明的优选方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通技术人员对本发明的技术方案做出的各种变形和改进，均应落入本发明权利要求书确定的保护范围内。The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.
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