KR20120048082A - Supporting device for bridge having function of controlling uplift force - Google Patents

Supporting device for bridge having function of controlling uplift force Download PDF

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Publication number
KR20120048082A
KR20120048082A KR1020100109510A KR20100109510A KR20120048082A KR 20120048082 A KR20120048082 A KR 20120048082A KR 1020100109510 A KR1020100109510 A KR 1020100109510A KR 20100109510 A KR20100109510 A KR 20100109510A KR 20120048082 A KR20120048082 A KR 20120048082A
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KR
South Korea
Prior art keywords
bridge
plate
lower plate
upper plate
upper structure
Prior art date
Application number
KR1020100109510A
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Korean (ko)
Inventor
강용우
허억준
Original Assignee
강용우
허억준
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Publication date
Application filed by 강용우, 허억준 filed Critical 강용우
Priority to KR1020100109510A priority Critical patent/KR20120048082A/en
Publication of KR20120048082A publication Critical patent/KR20120048082A/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/041—Elastomeric bearings

Abstract

PURPOSE: A support device for a bridge with a negative reaction control function is provided to improve the stability of a bridge by simultaneously controlling the horizontal load and negative reaction of an upper structure through multiple shock absorbing members. CONSTITUTION: A support device for a bridge with a negative reaction control function comprises an upper plate(110), a lower plate(120), a support member(130), and multiple shock absorbing members(140). The upper plate is installed under the upper structure of a bridge. The lower plate is installed on the top of piers. The support member is installed between the upper and lower plates and supports the load of the upper structure of the bridge. Both ends of the shock absorbing members are connected to the upper and lower plates to absorb shock applied to the upper structure of the bridge.

Description

Bridge support with negative reaction force control function {SUPPORTING DEVICE FOR BRIDGE HAVING FUNCTION OF CONTROLLING UPLIFT FORCE}

The present invention relates to a bridge support device, and more particularly, to a bridge support device for dissipating the external impact using the elastic or plastic deformation of the member and at the same time control the side reaction force applied to the upper structure.

In general, the bridge is configured in such a way that the upper structure such as the bridge top plate and the like is installed on the lower structure such as the bridge. In addition, a bridge bearing is installed between the upper structure and the lower structure to support the vertical load of the upper structure and to receive the movement displacement acting in the horizontal direction.

However, in the case of such a structure support, when the vertical load applied from the superstructure is biased to one side or a load to conduct the superstructure is applied, a reaction force occurs in the superstructure, causing the superstructure to injure or to break away. can do. In particular, in the case of railroad bridges having secondary tracks, there is a high possibility of side reactions due to the weight and operating characteristics of the train vehicle, and the current railway design standards require technologies that can limit the side reaction forces.

Therefore, the technology for controlling the reaction force of the bridge has been studied, but the conventional apparatus for controlling the reaction force is configured to only participate in the reaction force of the upper structure, in order to buffer the horizontal load generated in the upper structure is a separate device There was to be additionally provided.

In addition, the conventional sub-reaction force control device is integrally formed in the bridge bearing, it is difficult to replace and maintain the operation when an abnormality occurs.

The present invention has been made to solve the above problems, an object of the present invention is to provide a bridge supporting device that can limit the side reaction force while at the same time buffering the horizontal load acting on the upper structure.

In addition, it is an object of the present invention to provide a bridge support device with improved workability of maintenance.

The above object of the present invention, the upper plate is installed under the upper structure of the bridge, the lower plate is installed on the upper side of the bridge, the support member is installed between the upper plate and the lower plate to support the load of the upper structure, and Each end includes a plurality of shock absorbing members installed on the upper plate and the lower plate, respectively, and the shock absorbing member absorbs shock while bending occurs with respect to the horizontal displacement of the upper structure, and the upper portion is caused by negative reaction force. It can be achieved by a bridge bearing device characterized by limiting the vertical displacement of the structure.

Here, each of the buffer member may be detachably installed on the upper plate and the lower plate.

In this case, the shock absorbing member may have a columnar body portion, an upper head portion and a lower head portion installed at both ends of the body portion, and the body portion may be configured to generate a restoring force by its elasticity during bending deformation.

The upper plate may include a plurality of grooves along side surfaces thereof, and the plurality of shock absorbing members may be installed in the plurality of grooves of the upper head to limit vertical displacement of the upper plate.

The apparatus may further include a plurality of block members for fixing the lower head portion of the buffer member to an upper surface of the lower plate, and the block member may be detachably installed on the lower plate.

By this configuration, the upper plate or the lower plate includes at least one side bar detachably installed on the side, the side bar is the upper head portion or the lower head portion in the horizontal direction in the state where the buffer member is installed Can be prevented from being removed.

Meanwhile, in order to minimize bending at both ends when bending occurs, the body part may be formed in a double taper structure concave inclined in the center direction.

The support member may include an elastic pad having a plurality of elastic members stacked therein and may be fastened by the upper plate and the lower plate and bolts.

Alternatively, the support member may be composed of a pot-type bridge support member or a spherical bridge support member.

According to the present invention, it is possible to simultaneously limit the horizontal load and the reaction force of the upper structure by a plurality of buffer members, it is possible to improve the stability of the bridge.

Furthermore, since each shock absorbing member is individually detachably installed, the maintenance work can be easily performed.

1 is a perspective view showing a bridge support device according to the present embodiment,
Figure 2 is an exploded perspective view of the bridge support of Figure 1,
3 is a cross-sectional view showing the bending behavior of the buffer member of FIG.
4 is a cross-sectional view showing a regular state of the bridge is installed bridge support of Figure 1,
5 is a cross-sectional view showing a state in which the horizontal displacement occurred in the bridge of FIG.
FIG. 6 is a cross-sectional view illustrating a state in which negative pressure is generated in the bridge of FIG. 4.

Hereinafter, with reference to the accompanying drawings will be described in detail a bridge support device and a preferred embodiment according to the present invention. However, in the present embodiment has been described using the support for the bridge installed in the railway bridge, this is an example of the present invention is not limited to this, it is found out that it can be applied to the support of various bridges other than road bridge as an example Put it.

1 is a perspective view showing the bridge support device according to the present embodiment, Figure 2 is an exploded perspective view of the bridge support device of Figure 1;

1 and 2, the bridge support device 100 according to the present invention is provided between the upper plate 110, lower plate 120, and the upper plate 110 and the lower plate 120. It is configured to include a supporting member 130.

The upper plate 110 is installed below the upper structure 10, and the lower plate 120 is installed above the lower structure 20 of the bridge such as the bridge 20. In detail, the upper plate 110 may be fastened to the lower surface of the upper structure 10 or installed to be inserted into a stepped portion formed on the lower surface of the upper structure 10. In addition, the lower plate 120 may be installed on the mortar layer 22 formed in the bed block 21 positioned at the upper end of the piers 20. In this case, the upper plate 110 and the lower plate 120 may be coupled to the upper structure and the lower structure by a fixture (not shown), such as an anchor or a pin, respectively. Thus, the upper plate 110 behaves integrally with the upper structure, and the lower plate 120 behaves integrally with the piers 20.

The supporting member 130 is installed between the upper plate 110 and the lower plate 120. Therefore, the vertical load of the upper structure is received from the upper plate 110, and transferred to the piers through the lower plate 120.

As shown in FIG. 1, in this embodiment, a support member 130 configured in the form of an elastic pad may be used. Here, the elastic pad is a configuration in which a plurality of elastic layer 133 is laminated between the upper iron plate 131 and the lower iron plate 132, the reinforcement iron plate 134 is inserted between each elastic layer 133. . In this case, in order to prevent the elastic pad 130 from slipping between the upper plate 110 and the lower plate 120, the upper iron plate 131 and the lower iron plate 132 of the elastic pad 130 are respectively upper part. The plate 110 and the lower plate 120 are fixed by using fasteners such as bolts.

In the present embodiment, the supporting member 130 is configured using an elastic pad, but the present invention is not limited thereto. In addition to this, it can be configured using various types of support members, such as a pot-type bridge support member or a spherical bridge support member.

On the other hand, the present invention includes a plurality of buffer members 140 that can buffer or limit the force generated due to the behavior of the upper structure (10).

In general, the upper structure 10 of the bridge forms a path through which the vehicle passes, and various types of force act because it is directly exposed to the external environment. In particular, in the case of railway bridges, since the pole rail forming the track is directly installed in the upper structure 10 of the bridge, the horizontal load in the direction of the track continuously acts on the upper structure according to environmental changes, such as temperature, and the rapid start or stop of the train. The frictional forces between the train and the railroad tracks also act as horizontal loads on the superstructure. Furthermore, in the case of the railway bridge, since the vertical load is biased to one side due to the characteristics of the vehicle passing through, the side reaction force acts upward on the other side of the upper structure 10. At this time, the horizontal load and the reaction force acting on the upper structure 10 may be fatal to the stability of the bridge.

Therefore, the present invention includes a plurality of shock absorbing members 140 to cushion the horizontal load generated from the upper structure 10 and at the same time limit the side reaction force acting on the upper structure 10. The detailed configuration of the buffer member 140 will be described below.

As shown in FIG. 1, the bridge support apparatus 100 according to the present embodiment includes a plurality of shock absorbing members 140 disposed along the periphery of the support member 130. Each of the buffer members 140 includes a columnar body portion 141, and respective head portions 142 and 143 are formed at both ends of the body portion 141. The upper head part 142 of each of the buffer members 140 is fixedly installed on the upper plate 110, and the lower head part 143 is fixedly installed on the lower plate 120.

At this time, the buffer member 140 is composed of a rigid steel (steel) material having a horizontal yield strength of 5kN or more. Therefore, when a horizontal load is applied by the upper structure 10, it behaves elastically within a certain range, and when it is more than that, it is possible to minimize the transfer of the load to the lower structure while the plastic behavior is made.

Such a buffer member 140, while limiting the displacement of the upper structure 10 during the bending behavior due to the horizontal load, and generates a restoring force according to the material properties. Therefore, the restoring force may be used to return the upper structure 10 to an initial position within the elastic behavior range, and the restoring force may be provided to the upper structure 10 for a predetermined time even when it is out of the elastic behavior range.

In addition, as described above, both ends of the shock absorbing member 140 are fixed to the upper plate 110 and the lower plate 120 to maintain a constant interval, so that the reaction force applied to the upper structure is the shock absorbing member 140 at the corresponding position. It acts as a tensile force for). At this time, the buffer member 140 is made of a material of sufficient rigidity, it can limit the negative reaction force applied to the upper structure by resisting the tensile force.

On the other hand, the bridge support device 100 according to the present invention is preferably installed so that each of the buffer member 140 is removable. As described above, the shock absorbing member 140 limits the horizontal load and the negative reaction force while proceeding the bending behavior or resisting the tensile force. In this case, when the shock absorbing member 140 is damaged or plastic deformation occurs due to an unexpected shock, it is necessary to replace or maintain it individually. Accordingly, the present invention is configured in a structure that can be detached only the buffer member 140 is abnormal, a specific configuration will be described below.

As shown in FIG. 2, a plurality of grooves 111 are provided on the side surface of the upper plate 110. At this time, the shape of each groove 111 has a shape corresponding to the upper head portion 142 of the buffer member 140. Therefore, the upper head portion 142 of the buffer member 140 is fitted into the groove 111 of the upper plate 110. At this time, engaging portions (see FIGS. 1 and 2) are formed at both sides of the upper head portion 142 to prevent the upper plate from moving upward by the negative reaction force.

The lower head portion 143 of the buffer member 140 is fixed to the lower plate 120. In this case, the lower head portion 143 may also be configured to be fitted to the lower plate 120 like the upper head portion 142, but in this case, the bridge receiving device 100 is fully cushioned in a state in which the bridge is installed. It may be difficult to separate and install the members 140 individually. Therefore, in this embodiment, in order to improve the workability, the lower head portion 143 of the buffer member 140 is installed on the upper surface of the lower plate 120. And, by using a plurality of block members 121 detachably installed on the upper surface of the lower plate 120, the lower head portion 143 of each buffer member 140 is fixed. Here, the lower head portion 143 is also formed on both sides of the engaging portion (see Figs. 1 and 2), each locking portion is fixed by the block member 121, the movement in the upper direction is limited.

In addition, a plurality of side bars 150 are detachably installed on the side surfaces of the upper plate 110 and the lower plate 120 by screwing. Therefore, the respective sidebars 150 are fastened in the state where the head parts 142 and 143 of the shock absorbing member 140 are respectively installed on the upper plate 110 and the lower plate 120, and thus the head of the shock absorbing member 140. The parts 142 and 143 are prevented from being detached outward.

Therefore, according to this embodiment, when an abnormality occurs in some of the buffer member 140, the block member 121 is fixed to the sidebar 150 of the side and the lower head portion 143 of the buffer member 140. It is possible to replace the shock-absorbing member 140, which is abnormal in the state of separating). In this case, the remaining buffer member during the replacement operation to maintain the state installed in the bridge support device 100, it is possible to proceed with the maintenance work without special control on the use of the bridge.

However, in the present exemplary embodiment, a configuration of detaching the shock absorbing member 140 using the plurality of block members 121 and the sidebars 150 is described, but the present invention is not limited thereto as an example. In addition, it is also possible to implement the present invention by applying a variety of coupling methods that can be attached and detached individually the buffer member 140.

On the other hand, Figure 3 is a cross-sectional view showing the bending behavior of the buffer member of FIG. As shown in a of FIG. 3, when the body part is formed of a general cylindrical pillar, most bending occurs at a portion adjacent to the upper head part when displacement of the upper structure occurs. Therefore, a problem may occur that the upper head portion formed on the upper plate during bending of the shock absorbing member is also broken or removed while the bending force is applied.

Therefore, in the present embodiment, as shown in b of FIG. 3, the body part 141 of the buffer member 140 may be configured to have a double taper structure concavely inclined toward the center portion. In this case, most bending occurs at the center position of the body portion 141 during the bending behavior of the buffer member 140, and the bent shape also forms a substantially symmetrical structure with respect to the center. Therefore, even when the shock absorbing member 140 is bent, the upper head part 142 can stably maintain the fitted state in the groove 111 of the upper plate 110, thereby improving durability.

Hereinafter, the behavior characteristics of the bridge provided with the bridge support apparatus according to the above-described embodiment will be described.

FIG. 4 is a cross-sectional view showing a state in which the bridge supporting device of FIG. 1 is installed at all times, and FIG. 5 is a cross-sectional view showing a horizontal displacement in the bridge of FIG. 4.

As shown in Figure 4 and 5, when the load is applied to the upper structure 10 of the bridge in the horizontal direction, the upper plate of the upper structure 10 and the bridge support device 100 in the direction in which the load acts Horizontal displacement occurs at 110. At this time, the shock absorbing member 140 is bent in the direction in which the displacement occurs, by controlling the displacement by using the rigidity of the material during the bending behavior, it is possible to minimize the transfer of the load to the lower structure (20). . In addition, the upper structure may be returned to the initial position by the restoring force of the shock absorbing member 140 to be restored to the circular shape during the bending behavior.

4 and 5 illustrate a case in which a horizontal load is applied in a direction perpendicular to the bridge, but even when a horizontal load is applied in the direction of the bridge, the support members for the bridge exhibit the same behavioral characteristics. have.

On the other hand, Figure 6 is a cross-sectional view showing a state in which the negative reaction force generated in the bridge of FIG. In general, in the curved section of railway bridges, the vertical load is biased outward of the radius of the curve to resist centrifugal force during the train. Therefore, in the upper structure 10, a negative reaction force in an upward direction occurs at a portion located inside the curved radius.

When the side reaction occurs, an upward force also acts on the upper plate 110 of the bridge support device 100 that behaves integrally with the upper structure 10 and acts as a tensile force to the buffer member 140 installed at the corresponding position. At this time, the shock absorbing member 140 resists such tensile force by using the rigidity of the material, and the upper head part 142 installed to the upper plate 110 restricts the upper plate 110 from moving upward while the sub-reaction force. It is prevented from acting on the upper structure 10.

6, the curved section of the railway bridge in which the reaction force is generated is described as an example, but the bridge supporting apparatus according to the present invention can effectively limit the reaction force that can be generated at all positions of the bridge.

Claims (9)

An upper plate installed under the upper structure of the bridge;
A lower plate installed above the pier;
A support member installed between the upper plate and the lower plate to support the load of the upper structure; And,
Both ends each include a plurality of buffer members installed on the upper plate and the lower plate,
The cushioning member absorbs shock while bending occurs with respect to the horizontal displacement of the upper structure, and supports the bridge for the vertical displacement of the upper structure due to the negative reaction force. The method of claim 1,
Wherein each buffer member is a bridge support device, characterized in that detachably installed on the upper plate and the lower plate. The method of claim 2,
The buffer member has a columnar body portion, the upper head portion and the lower head portion is provided at both ends of the body portion, the body portion for the bridge, characterized in that configured to generate a restoring force by its elasticity during bending deformation Supporting device. The method of claim 3,
The upper plate is provided with a plurality of grooves along the side, the plurality of buffer members for the bridge characterized in that the upper head is fitted into each of the plurality of grooves to limit the vertical displacement of the upper plate Supporting device. The method of claim 3,
And a plurality of block members for fixing the lower head portion of the buffer member to an upper surface of the lower plate, wherein the block member is detachably installed on the lower plate. The method according to any one of claims 3 to 5,
The upper plate or the lower plate includes at least one side bar detachably installed on a side surface, wherein the side bar prevents the upper head portion or the lower head portion from being removed in a horizontal direction while the buffer member is installed. Bridge support device characterized in that. The method of claim 3,
The body support unit for a bridge, characterized in that formed in a double taper (double taper) structure that is inclined concavely in the center direction to minimize bending at both ends when bending occurs. The method of claim 3,
The supporting member is composed of an elastic pad formed by stacking a plurality of elastic members therein, and supporting the bridge, characterized in that fastening by the upper plate and the lower plate and the bolt. The method of claim 3,
The support member is a bridge support device, characterized in that consisting of a pot-type bridge support member or a spherical bridge support member.
KR1020100109510A 2010-11-05 2010-11-05 Supporting device for bridge having function of controlling uplift force KR20120048082A (en)

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KR1020100109510A KR20120048082A (en) 2010-11-05 2010-11-05 Supporting device for bridge having function of controlling uplift force

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Application Number Priority Date Filing Date Title
KR1020100109510A KR20120048082A (en) 2010-11-05 2010-11-05 Supporting device for bridge having function of controlling uplift force

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160090561A (en) 2015-01-22 2016-08-01 서울특별시시설관리공단 Device for measuring the negative reaction in a bridge
KR102167032B1 (en) * 2020-04-22 2020-10-19 유니슨에이치케이알 주식회사 Bridge support for easy replacement
CN113062209A (en) * 2021-03-29 2021-07-02 江南大学 Prestressing force buffering power consumption bridge vibration isolation support
CN113174850A (en) * 2021-04-25 2021-07-27 中建七局第四建筑有限公司 Cable-stayed bridge supporting body

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160090561A (en) 2015-01-22 2016-08-01 서울특별시시설관리공단 Device for measuring the negative reaction in a bridge
KR102167032B1 (en) * 2020-04-22 2020-10-19 유니슨에이치케이알 주식회사 Bridge support for easy replacement
CN113062209A (en) * 2021-03-29 2021-07-02 江南大学 Prestressing force buffering power consumption bridge vibration isolation support
CN113062209B (en) * 2021-03-29 2022-03-15 江南大学 Prestressing force buffering power consumption bridge vibration isolation support
CN113174850A (en) * 2021-04-25 2021-07-27 中建七局第四建筑有限公司 Cable-stayed bridge supporting body

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