Multifunctional direction change support and multifunctional mounting device, and a cutting and dismantling method for structures including elevated bridges and bridge girders using the same
Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-08-12
Smart Images
Figure 112025501103214-PAT00001_ABST
Abstract
Description
Technology Field
[0001] The present invention relates to a multi-functional direction-changing support and a multi-functional mounting device, and a cutting and dismantling method for structures including elevated bridges and bridge girders using the same. More specifically, when cutting and dismantling a bridge girder including a steel girder and a concrete PC beam to be dismantled between a pier and an adjacent pier or abutment, the invention applies the principle that equilibrium is maintained by diverting the direction of the reverse moment, which is opposite to the positive moment acting downward on the bridge girder relative to the pier, at the top of the pier or abutment. A horizontal drilling section is installed on the top of the pier or abutment from a starting point where a strand member is fixed with a lifting jack at the top of a temporary dismantling structure or lifting jack base fixed to the top of the pier or abutment. A multi-functional direction-changing support is installed on one side of the drilling section, and a multi-functional mounting device is installed on the other side. By diverting the direction of the strand member through the interior of the drilling section and utilizing the bracing traction force of the tensioned strand member, the invention improves structural safety and on-site constructability while allowing the bridge girder to be lowered vertically downward, while maintaining the lower site of the bridge to be dismantled. This invention relates to a multi-functional directional change support and a multi-functional mounting device configured to enable the cutting and dismantling of bridge girders even in conditions including ground, rivers, or strong currents, thereby improving usability, and a method for cutting and dismantling structures including elevated bridges and bridge girders using the same. Background Technology
[0002] Generally, dismantling aging overpasses installed in urban areas requires space for large cranes or various cutting and dismantling devices, which occupies the adjacent longitudinal side lanes. This not only obstructs vehicle traffic and pedestrians but also causes social losses by forcing detours or slowing down traffic.
[0003] Furthermore, dismantling aging bridges installed across streams or rivers entails significant limitations due to the installation locations for large cranes and various cutting and dismantling devices, as well as the installation conditions for facilities related to the dismantling method.
[0004] The conventional patented technologies for improving the aforementioned site conditions are analyzed as follows.
[0005] According to the prior art Patent Registration No. 10-1026012 of the Korean Intellectual Property Office (filed on November 25, 2010), the present invention, in order to achieve the above objective, comprises: (a) a step of cutting and dismantling a portion of the bridge deck around the pier to install a temporary structure for dismantling the bridge deck; (b) a step of installing a temporary structure for dismantling on the upper surfaces of two adjacent piers facing each other, the structure comprising: a support member having a longitudinal surface attached to one side of the front and rear surfaces of the upper part of the pier; a support part having a rectangular shape formed by the vertical combination of four support members, with one end of the support member vertically connected to each corner and a first protruding member protruding from both sides of the upper surface of the support member installed in a direction consistent with the longitudinal direction of the bridge deck; and a jack base part in which a second protruding member protruding from both sides of the lower surface of the jack base and the first protruding member of the support part are connected by a first connecting member and fixed to the upper surface of the support part; and (c) the upper surface of the jack base of the temporary structure A method for dismantling a bridge deck using a lifting jack is provided, characterized by comprising the steps of: (d) installing a lifting jack on one side; (e) installing a lifting beam on the ground and connecting the lifting beam and the lifting jack with a wire; (f) raising the lifting beam to the lower part of the bridge deck and cutting the bridge deck so as not to cause interference with the pier when lowering the bridge deck; and (f) lowering the lifting beam on which the bridge deck is placed to dismantle the bridge deck (Identification No. 0006, see FIGS. 3 to 5).
[0006] Here, the structure is configured such that a support member, etc., with a longitudinal surface attached to one side of the front and rear of the upper part of the bridge pier (b), and a support member, etc., is installed on one side of the bridge deck to be dismantled between the bridge piers or abutments, and a lifting jack supported on a cantilever with only one side of the support member protruding is used to support the load of the bridge deck to be dismantled, which is a highly heavy object, thereby causing a problem in which only a positive moment (+M) acts in one direction, resulting in reduced structural safety.
[0007] In addition, according to the prior art of the Korean Intellectual Property Office Patent Registration No. 10-2578490 (filing date November 07, 2022), the first counterweight (4a) and the second counterweight (4b) may have a weight greater than or equal to the weight of the girder (93) to be dismantled (Identification No. 0037, see FIG. 1).
[0008] Meanwhile, the weight unit may have a weight greater than the weight of the girder (93) to be dismantled. Accordingly, in the second step, when weight is introduced to the first strand jack unit (2a) and the second strand jack unit (2b), the balance between one side and the other side in the longitudinal direction of the girder (93) to be dismantled can be maintained, and overturning can be prevented (see identification number 0040).
[0009] Here, the weight of the first counterweight (4a) must be greater than the weight of the girder (93) to be dismantled, which is a highly heavy object. After dismantling the girder (93), concrete with a volume greater than the weight of the girder (93) must be disposed of as waste. Furthermore, if the location where the first counterweight (4a) is to be placed is a river or stream, there is a problem in that the installation itself may be difficult or impossible. Prior art literature
[0010] Korean Intellectual Property Office Registered Patent Publication No. 10-1026012 (Application Date: November 25, 2010) Korean Intellectual Property Office Registered Patent Publication No. 10-2578490 (Application Date: November 07, 2022) The problem to be solved
[0011] The present invention aims to improve structural safety and on-site constructability when lowering a bridge girder vertically downwards by applying a principle in which a reverse moment (-M in FIG. 1 to 2), which is opposite to the positive moment (+M in FIG. 1 to 2) acting downwards on the bridge girder relative to the pier or abutment, is converted at the top of the pier or abutment to maintain equilibrium, regardless of the site conditions of an aging elevated bridge installed on the ground in a busy urban area or a bridge installed over a stream or river, when cutting and dismantling a bridge girder including a steel girder and a concrete PC beam to be dismantled between a pier and an adjacent pier or abutment.
[0012] In addition, the present invention aims to improve usability by enabling the cutting and dismantling of bridge girders even in situations where the subsurface site conditions are rivers or strong. means of solving the problem
[0013] In a multi-functional direction-changing support, the structure comprises: a hollow support pipe for inserting a hole, having a diameter slightly smaller than the diameter of the hole and a predetermined length, installed by penetrating the upper part of a pier or abutment horizontally with respect to the longitudinal direction of the bridge; a central support for installing a hole with a predetermined diameter formed in a direction perpendicular to the longitudinal direction of the support pipe, having a predetermined area and thickness in contact with one end of the support pipe for inserting a hole, having a predetermined diameter formed in the center, and having a first fixing hole with a predetermined diameter formed at a predetermined interval slightly inward from the edge, having a joint with one end of the support pipe for inserting a hole; a support portion, plate-shaped, having a predetermined thickness and area, installed in a parallel state with a predetermined interval for installing a roller in a direction perpendicular to the central support portion, and configured such that a hole is installed at each location where the roller rotation center axis is to be positioned; and a roller configured to be fitted onto the roller rotation center axis and roll inside the pair of support portions. The present invention relates to a composite functional direction-changing support member characterized by being configured to be inserted into a drilling hole for installing a first fixing member of the central drilling support member and fixed to the upper part of a bridge pier or abutment, and configured to change the direction of a strand wire and tension it through a drilling member and a roller.
[0014] In addition, the invention relates to a composite functional mounting device comprising: a hollow hole insertion tube having a diameter slightly smaller than the diameter of the hole and a predetermined length, installed by penetrating the upper part of a pier or abutment in a horizontal direction relative to the longitudinal direction of the bridge; a central hole base portion configured to be joined to one end of the hole insertion tube, having a predetermined area and thickness in a direction perpendicular to the longitudinal direction of the hole insertion tube, with a hole having a predetermined diameter in the center and a hole for installing a second fixing part having a predetermined diameter at a predetermined interval slightly inward from the edge; a second fixing part configured to be inserted into the hole for installing the second fixing part of the central hole insertion tube and fixed to the upper part of the pier or abutment; and a nut washer installed by joining to the center of one bottom surface of the central hole insertion part. The invention is characterized by being configured to tension the strand wire of the exposed end portion of the nut washer.
[0015] Meanwhile, in a method for cutting and dismantling structures including elevated bridges and bridge girders using a composite functional direction change support and a composite functional mounting device, the method comprises: (a) a process of cutting and dismantling a portion of the bridge deck around the pier or abutment symmetrically on both sides from the upper center of the pier or abutment; (b) a process of installing a temporary structure for dismantling the bridge girder so as to protrude symmetrically on both sides from the upper center of the pier or abutment, drilling a hole penetrating the upper part of the pier or abutment, installing a composite functional direction change support on one side of the hole and installing a composite functional mounting device on the other side of the hole; and (c) a process of installing lifting jacks on the upper edges of the lifting jack base sections on both sides of the temporary structure for dismantling the bridge girder; (d) a strand wire connected to one lifting jack of a temporary structure for dismantling a bridge girder is tensioned by passing through a multi-functional direction-changing support, a drilling section, and a multi-functional pedestal section to change direction and compress a multi-functional mounting member, and a strand wire connected to the other lifting jack of a temporary structure for dismantling a bridge girder is installed on the ground and the lifting beam and the lifting jack are connected by the strand wire; (e) a process of lifting the lifting beam to the bottom of the bridge girder and cutting the bridge girder at a position that does not cause interference with a pier or abutment when the bridge girder is lowered; and (f) a process of lowering the lifting beam on which the bridge girder is placed onto a heavy-duty transport means and transporting it laterally to a road along the longitudinal side of the bridge or the overpass to be dismantled to dismantle the bridge girder; and the present invention relates to a cutting and dismantling method for a structure including an overpass and a bridge girder using a multi-functional direction-changing support and a multi-functional mounting member, characterized by being composed of: (d) a process of lowering the lifting beam on which the bridge girder is placed onto a heavy-duty transport means and transporting it laterally to a road along the longitudinal side of the overpass or bridge to be dismantled.
[0016] In addition, the above-mentioned process includes: (a) cutting and dismantling a portion of the bridge deck surrounding the pier or abutment symmetrically on both sides from the upper center of the pier or abutment; (b) installing a temporary structure for dismantling bridge girders so as to protrude symmetrically on both sides from the upper center of the pier or abutment, drilling a hole penetrating the upper part of the pier or abutment, installing a multi-functional direction-changing support on one side of the hole and a multi-functional mounting device on the other side of the hole; (c) installing lifting jacks on the upper edges of the lifting jack base sections on both sides of the temporary structure for dismantling bridge girders; and (d) tensioning a strand wire connected to one lifting jack of the temporary structure for dismantling bridge girders by changing its direction through the multi-functional direction-changing support, the hole, and the multi-functional mounting device to compress the multi-functional mounting device, and installing a lifting beam on the ground and connecting the lifting beam and the lifting jack with the strand wire connected to the other lifting jack of the temporary structure for dismantling bridge girders. (e) a process of lifting the lifting beam to the lower part of the bridge girder and cutting the bridge girder at a position that does not cause interference with the pier or abutment when the bridge girder is lowered; and (f) a process of lowering the lifting beam on which the bridge girder is placed onto a heavy-duty transport means and transporting it laterally to the road along the longitudinal side of the overpass or bridge to be dismantled to dismantle the bridge girder; and (a) a process of cutting and dismantling a portion of the bridge deck around the pier or abutment symmetrically on both sides from the upper center of the pier or abutment; (b) a process of installing a lifting jack support so as to protrude symmetrically on both sides from the upper center of the pier or abutment, drilling a hole penetrating the upper part of the pier or abutment, installing a multi-functional direction change support on one side of the hole and a multi-functional mounting device on the other side of the hole; and (c) a process of installing lifting jacks on the upper edges of both sides of the lifting jack support;(d) a process of tensioning a strand wire connected to one lifting jack of a lifting jack stand by changing its direction through a composite function direction change support, a drilling section, and a composite function mounting section to compress the composite function mounting section, and a process of tensioning a strand wire connected to the other lifting jack of the lifting jack stand by connecting it to a binding section composed of a second protruding member installed on one edge of the steel girder, a lifting jack base section, and a first connecting member; (e) a process of cutting the steel girder at a location that does not cause interference with a pier or abutment when the steel girder is lowered; and (f) a process of lowering the cut steel girder by adjusting the lifting jack to unwind the strand wire, loading it onto a heavy-duty transport means, and transporting it laterally to a longitudinal side road of the overpass or bridge to be dismantled, thereby dismantling the steel girder; and the invention relates to a method for cutting and dismantling structures including overpasses and bridge girders using a composite function direction change support and a composite function mounting section, characterized by being replaced with the above-ground and bridge girders.
[0017] Meanwhile, the present invention relates to a method for cutting and dismantling structures, including elevated bridges and bridge girders, using a multi-functional directional change support and a multi-functional mounting device, characterized in that the above-mentioned heavy-duty transport means is replaced with a barge. Effects of the invention
[0018] The present invention is a useful invention that improves structural safety and on-site constructability when lowering a bridge girder vertically downwards by applying a principle in which a reverse moment, opposite to the positive moment acting downwards relative to the pier or abutment, is diverted from the direction of the positive moment acting downwards on the bridge girder and the upper part of the pier or abutment to maintain equilibrium, regardless of site conditions of aging elevated bridges installed above ground in congested urban areas or bridges installed over rivers or streams, when cutting and dismantling a bridge girder including a steel girder and a concrete PC beam to be dismantled between a pier and an adjacent pier or abutment.
[0019] Furthermore, the present invention is a useful invention that improves usability by enabling the cutting and dismantling of bridge girders even when the site conditions beneath the bridge girders to be dismantled are rivers or strong. Brief explanation of the drawing
[0020] FIG. 1 is a perspective view of a temporary dismantling structure installed on the upper part of a bridge pier during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge according to the present invention. FIG. 2 is a side reference cross-sectional view of a rigid girder during dismantling, including a steel girder having inherent rigidity in the longitudinal direction of the bridge of the present invention. FIG. 3 is an enlarged cross-sectional view of the perforation section, the composite function direction change support, and the composite function mounting section according to AA of FIG. 1 and 2. FIG. 4 is an example diagram of the disassembled component configuration for the composite functional direction change support of FIG. 1 to 3. FIG. 5 is an example diagram of the disassembled component configuration for the composite function mounting device of FIG. 1 to 3. FIG. 6 is a plan view showing an example of process (a) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 7 is a side view showing an example of process (a) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 8 is a front view showing an example of process (a) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 9 is a plan view showing examples of processes (b) to (d) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 10 is a side view showing examples of processes (b) to (d) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 11 is a front view showing examples of processes (b) to (d) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 12 is a plan view showing an example of process (e) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 13 is a side view showing an example of process (e) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 14 is a side view showing an example of process (f) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 15 is a front view showing an example of process (f) during the dismantling of a girder including a concrete PC beam that does not have inherent rigidity in the longitudinal direction of the bridge. FIG. 16 is an enlarged perspective view showing the lower structure details of the lifting jack base part of FIG. 1. FIG. 17 is an enlarged cross-sectional view of C in FIG. 16. FIG. 18 is a cross-sectional view of an example in which the heavy cargo transport means of FIG. 14 and FIG. 15 is replaced with a barge. FIG. 19 is an enlarged cross-sectional view of a binding portion composed of the second protruding member and the lifting jack base portion and the first connecting member of FIG. 1 and FIG. 16. FIG. 20 is a construction process diagram for a cutting and dismantling method for structures including elevated bridges and bridge girders using the composite functional direction change support and composite functional mounting device of the present invention. Specific details for implementing the invention
[0021] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description.
[0022] The present invention is not limited to the embodiments disclosed below but can be implemented in various different forms, and the embodiments provided are merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention.
[0023] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0024] Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the invention, such detailed description will be omitted.
[0025] FIG. 1 is a perspective view of a temporary dismantling structure installed on the upper part of a bridge pier during the dismantling of a girder including a concrete PC beam that does not possess inherent rigidity in the longitudinal direction of the bridge according to the present invention; FIG. 2 is a side reference cross-sectional view during the dismantling of a rigid girder including a steel girder that possesses inherent rigidity in the longitudinal direction of the bridge according to the present invention; FIG. 3 is an enlarged cross-sectional view of a drilling section, a composite function direction switching support, and a composite function mounting device according to AA in FIG. 1 and 2; FIG. 4 is an example diagram of the component configuration in a disassembled state for the composite function direction switching support of FIG. 1 and 3; FIG. 5 is an example diagram of the component configuration in a disassembled state for the composite function mounting device of FIG. 1 and 3; FIG. 6 is a plan view showing an example of process (a) during the dismantling of a girder including a concrete PC beam that does not possess inherent rigidity in the longitudinal direction of the bridge; FIG. 7 is a side view showing an example of process (a) during the dismantling of a girder including a concrete PC beam that does not possess inherent rigidity in the longitudinal direction of the bridge; and FIG. 8 is FIG. 9 is a front view showing an example of process (a) when dismantling a girder including concrete PC beams that do not possess inherent stiffness in the longitudinal direction of the bridge; FIG. 10 is a side view showing an example of processes (b) to (d) when dismantling a girder including concrete PC beams that do not possess inherent stiffness in the longitudinal direction of the bridge; FIG. 11 is a front view showing an example of processes (b) to (d) when dismantling a girder including concrete PC beams that do not possess inherent stiffness in the longitudinal direction of the bridge; FIG. 12 is a plan view showing an example of process (e) when dismantling a girder including concrete PC beams that do not possess inherent stiffness in the longitudinal direction of the bridge; FIG. 13 is a side view showing an example of process (e) when dismantling a girder including concrete PC beams that do not possess inherent stiffness in the longitudinal direction of the bridge.FIG. 14 is a side view showing an example of process (f) during the dismantling of a girder including a concrete PC beam that does not possess inherent rigidity in the longitudinal direction of the bridge; FIG. 15 is a front view showing an example of process (f) during the dismantling of a girder including a concrete PC beam that does not possess inherent rigidity in the longitudinal direction of the bridge; FIG. 16 is an enlarged perspective view showing the substructure details of the lifting jack base part of FIG. 1; FIG. 17 is an enlarged cross-sectional view of C in FIG. 16; FIG. 18 is a cross-sectional view of an example in which the heavy load transport means of FIG. 14 and FIG. 15 is replaced with a barge; FIG. 19 is an enlarged cross-sectional view of a binding part composed of the second protruding member, the lifting jack base part, and the first connecting member of FIG. 1 and FIG. 16; and FIG. 20 is a construction process diagram regarding a method for cutting and dismantling a structure including an elevated bridge and a bridge girder using a composite functional direction changing support and a composite functional mounting device of the present invention.
[0026] In a composite functional direction change support, as shown in FIGS. 1 to 4, a hole insertion support pipe (709) configured in a hollow state having a diameter slightly smaller than the diameter of a hole (600) installed by penetrating the upper part (11) of a pier or abutment (10) in a horizontal direction with respect to the longitudinal direction of the bridge and a predetermined length; and a central hole support part (701) configured in a state in contact with one end of the hole insertion support pipe (709), having a predetermined area and thickness in a direction perpendicular to the longitudinal direction of the hole insertion support pipe (709), having a hole with a predetermined diameter in the center, and a hole for installing a first fixing part (711) with a predetermined diameter at a predetermined interval slightly inward from the edge, and having a joint part (710) with one end of the hole insertion support pipe (709). A support member (703) configured to be installed in a parallel state with a predetermined spacing so as to allow a roller (707) to be installed in a perpendicular direction in contact with the central perforation support member (701), and having a plate-like shape with a predetermined thickness and area, and configured such that a perforation hole is installed at each location where the roller rotation center axis (705) is to be located; and a roller (707) configured to be fitted onto the roller rotation center axis (705) and roll inside the pair of support members (703); The present invention relates to a composite functional direction change support (700) characterized by being configured to change the direction of a strand wire (400) and tension it through a drilling part (600) and a roller (707), each comprising a first fixing part (711) configured to be inserted into a drilling hole for installing a first fixing part (711) of the central drilling support part (701) and fixed to the upper part (11) of a bridge pier or abutment (10).
[0027] Here, the drilling section (600) is performed using a drilling machine, and the drilling diameter is preferably about 100 to 300 mm. The drilling section insertion support pipe (709) is preferably a steel pipe having structurally solid rigidity, and the diameter is preferably slightly smaller than 100 to 300 mm so that it is fitted tightly and has excellent fixing properties. The first fixing section (711) is preferably a concrete anchor installed by omitting a separate drawing of the concrete drilling section and injecting adhesive resin into the drilling section. The joint section (710) is preferably a solid weld. The rotating roller (707), configured to roll by being fitted onto a rod-shaped roller rotation center axis (705) supported by both supporting sections (703) made of steel or steel plate material having a predetermined thickness and supporting capacity, should be designed so that it can structurally change direction through a strand wire (400) to support the weight of the bridge deck (20) and the bridge girder (21).
[0028] Additionally, in a composite function mounting device, as illustrated in FIGS. 1 to 3 and FIGS. 5, a drilling section insertion pipe (809) is formed of a steel pipe having structural rigidity and a hollow structure having a diameter slightly smaller than the diameter of the drilling section (600) installed by penetrating the upper part (11) of a pier or abutment (10) in a horizontal direction relative to the longitudinal direction of the bridge, and a predetermined length; and a central drilling base (801) is configured to be in contact with one end of the drilling section insertion pipe (809), having a predetermined area and thickness in a direction perpendicular to the longitudinal direction of the drilling section insertion pipe (809), with a drilling hole having a predetermined diameter formed in the center and a drilling hole for installing a second fixing section (805) having a predetermined diameter formed at a predetermined interval slightly inward from the edge, and is firmly welded to one end of the drilling section insertion pipe (809). The present invention relates to a composite functional mounting device (800) characterized by being configured to tension a strand wire (400) at one end of the exposed end of the nut washer (803), comprising: a second fixing part (805) configured to be inserted into a drilling hole for installing a second fixing part (805) of the central drilling base part (801) and fixed to the upper part (11) of a bridge pier or abutment (10); and a nut washer (803) installed by welding to the center of one bottom surface of the central drilling base part (801).
[0029] Here, the drilling section (600) is performed using a drilling machine, and the drilling diameter is preferably about 100 to 300 mm. The drilling section insertion tube (809) is preferably a steel pipe having structurally solid rigidity, and the diameter is preferably slightly smaller than 100 to 300 mm so that it is fitted tightly and has excellent fixation. The central drilling base (801) is a support plate having a hole in the center and having a predetermined diameter, thickness, and structural strength. The second fixing section (805) is preferably a concrete anchor installed with a concrete drilling section (not separately illustrated) and an adhesive resin injected into the drilling section. The nut washer (803) is preferably a nut with structural rigidity and a washer with structural rigidity having a diameter larger than the diameter of the nut, either integrated or welded to one side of the nut. The second fixing section (805) is preferably a concrete anchor installed with a concrete drilling section (not separately illustrated) and an adhesive resin injected into the drilling section.
[0030] Meanwhile, regarding a method for cutting and dismantling a structure including an elevated bridge and a bridge girder using a multi-functional direction change support and a multi-functional mounting device, the present invention relates to (a) a process of cutting and dismantling a portion of the bridge deck (20) around the pier or abutment (10) symmetrically on both sides from the upper center of the pier or abutment (10), as illustrated in FIGS. 1 and 3 and FIGS. 6 to 8; and
[0031] Here, in order to form a space for installing a temporary structure (100) for dismantling a bridge girder (21) including a bridge deck (20) on the upper part (11) of the pier or abutment (10), a portion of the bridge deck (20) around the pier or abutment (10) is cut and dismantled in advance using a cutter, and a portion of the bridge deck (20) between the bridge girder (21) and the bridge girder (21) adjacent to the bridge girder (21) is cut and dismantled using a cutter, and a temporary structure (100) for dismantling a bridge girder (21) including a bridge deck (20) is installed in the partial dismantling portion (50) which is the space between them.
[0032] In addition, as illustrated in FIGS. 1, 3, 5, 9 to 11, and 16, (b) a process of installing a temporary structure (100) for dismantling a bridge girder (21) so as to protrude symmetrically from both sides from the center of the upper part (11) of the pier or abutment (10), and drilling a hole (600) that penetrates the upper part (11) of the pier or abutment (10), installing a multi-functional direction change support (700) on one side of the hole (600), and installing a multi-functional mounting device (800) on the other side of the hole (600); and the invention relates to the process.
[0033] Here, a temporary structure (100) for dismantling a bridge girder (21), comprising a bridge deck (20) composed of the support member (110), a support member (120), and a lifting jack base member (130), is installed on the upper part (11) of a bridge pier or abutment (10), and the support member (110) is fixed by attaching its longitudinal surface to one side of the front or rear surface of the upper part (11) of the bridge pier or abutment (10).
[0034] Meanwhile, various methods such as anchor bolts may be used as the above attachment method, but preferably, the second connecting member (150) shown in FIG. 1 and FIG. 16 is used.
[0035] In addition, the support member (110) can be any member that satisfies the required strength for axial tension and compression, but preferably, an H-beam is used, which not only has excellent tensile and compressive strength but also facilitates assembly and processing with other related members.
[0036] Meanwhile, the support member (120) shown in FIG. 1 is formed by vertically combining several support members (121) as shown in FIG. 16, and a first protruding member (122) is vertically protruded from the upper surface of the support member (121) located in the longitudinal direction of the bridge. Any member that satisfies the required strength can be used for the support member (121), but preferably, an H-beam is used as it is easy to assemble and process with other members.
[0037] In addition, the lifting jack base (130) shown in FIGS. 1 and FIGS. 16 is fixed to the support (120) by connecting the second protruding member (131) protruding from both sides of the bottom surface of the lifting jack base (132) and the first protruding member (122) of the support (120) with the first connecting member (140). Any member can be used for the lifting jack base (132) as long as the required strength is secured, but it is preferable to use one assembled by welding a steel plate and an H-beam.
[0038] Meanwhile, the first connecting member (140) shown in FIG. 16 is a pin-shaped steel rod machined, and the lifting jack base (132) shown in FIG. 16 can be directly connected to the support member (121) shown in FIG. 16 of the support member (120) shown in FIG. 1 by means of bolts and welding, and the temporary structure (100) for dismantling a bridge girder (21), including a bridge deck (20) composed of a support member (110), a support member (120), and a lifting jack base part (130) shown in FIG. 1 and FIG. 16, is configured to be installed on each side of the upper part (11) of adjacent bridge piers or abutments (10) facing each other.
[0039] Additionally, as shown in FIGS. 2 and 3, a drilling section (600) is drilled through the upper part (11) of a pier or abutment (10) along the longitudinal direction of the bridge, and on one side of the drilling section (600), a drilling section insertion support tube (709) of a composite function direction change support (700) is inserted into the drilling section (600), and a first fixing section (711) including a concrete anchor is installed by drilling through the drilling hole of a central drilling support (701) and filling the drilling section (11) with adhesive resin, and on the other side of the drilling section (600), a drilling section insertion tube (809) of a composite function mounting member (800) is inserted into the drilling section (600), and a second fixing section (805) including a concrete anchor is installed by drilling through the drilling hole of a central drilling base (801) and filling the drilling section (11) with adhesive resin It was configured to be installed by filling it.
[0040] Meanwhile, as illustrated in FIGS. 1, 3, 5, and FIGS. 9 to 11, (c) a process of installing lifting jacks (200) on the upper edges of each lifting jack base part (130) of both sides of a temporary structure (100) for dismantling a bridge girder (21); and the invention relates to.
[0041] Here, a lifting jack (200) is installed on one side of the upper surface of the lifting jack base (132), and the lifting jack (200) is responsible for the function of lowering a bridge girder (21) including a bridge deck (20). Any jack responsible for the function of lowering a bridge girder (21) including a bridge deck (20) can be used, and preferably, a strand jack is used.
[0042] In addition, as illustrated in FIGS. 1, 3, 5, and FIGS. 9 to 11, (d) a strand wire (400) connected to one lifting jack (200) of a temporary structure (100) for dismantling a bridge girder passes through a composite function direction change support (700), a drilling section (600), and a composite function mounting section (800) to change direction and tension the composite function mounting section (800) in a state of compression, and a strand wire (400) connected to the other lifting jack (200) of the temporary structure (100) for dismantling a bridge girder installs a lifting beam (300) on the ground (605) and connects the lifting beam (300) and the lifting jack (200) with the strand wire (400); and the invention relates to the process of
[0043] Here, the composite function direction change support (700) is configured to change the direction of the strand wire (400) connected to the lifting jack (200), and the composite function mounting member (800) is configured to tension and fix the strand wire (400) using the lifting jack (200).
[0044] The above strand wire (400) is used to connect the lifting jack (200) and the lifting beam (300), and the strand wire (400) can be applied as long as it has sufficient strength to perform the function of lowering the bridge girder (21), including the bridge deck (20).
[0045] Additionally, the lifting beam (300) serves as a support for safely lowering a bridge girder (21) including a bridge deck (20), and may be composed of only a horizontal beam (310) or may be composed of a horizontal beam (310) and a vertical beam (320). Wire anchoring devices are installed on both sides of the horizontal beam (310) of the lifting beam (300) to be connected to a strand wire (400) that is lowered from a lifting jack (200).
[0046] Meanwhile, the lifting beam (300) can be made of any material capable of supporting a structure, but preferably an H-beam is used.
[0047] Additionally, the lifting beam (300) of process (d) is a horizontal beam (310) installed on the ground (605) in front of adjacent piers or abutments (10) facing each other in a direction perpendicular to the longitudinal direction of the bridge, and the lifting beam (300) of process (d) is composed of a horizontal beam (310) installed on the ground (605) in front of adjacent piers or abutments (10) facing each other in a direction perpendicular to the longitudinal direction of the bridge, and a vertical beam (320) with both ends connected to one side of the horizontal beam (310), and a reinforcing member (330) installed between the vertical beams (320) connected to the horizontal beam (310) with both ends connected to one side of the vertical beam (320).
[0048] Meanwhile, as shown in FIGS. 10 and FIGS. 12, if the rigidity of the bridge girder (21) itself is not sufficient for lifting, the lifting beam (300) composed only of a horizontal beam (310) may be additionally combined with a vertical beam (320) and a reinforcing member, which is not separately illustrated in the drawings.
[0049] For example, if the bridge girder (21) is a concrete PC beam, cutting the PC steel wires is unavoidable for dismantling. In this case, if the bridge girder (21) including the bridge deck (20) is lifted using a lifting beam (300) consisting only of a cross beam (310) with the PC steel wires cut, the bridge girder (21) including the bridge deck (20) may not meet the self-rigidity required for lifting, and thus the bridge girder (21) including the bridge deck (20) may be destroyed.
[0050] Therefore, in this case, a lifting beam (300) is used in which a horizontal beam (310) is reinforced with a vertical beam (320) and a reinforcing member (not separately illustrated in the drawing). For the horizontal beam (310) and vertical beam (320) used in the lifting beam (300), any material can be used as long as it satisfies the required strength, but it is preferable to use an H-beam, which is easy to assemble and process.
[0051] The reinforcing member, which is omitted from the drawing above, has both ends connected to one side of the vertical beam (320) so that the vertical beams (320) move integrally, and the entire lifting beam (300) is configured to support the bridge girder (21) including the bridge deck (20).
[0052] Meanwhile, as illustrated in FIGS. 1, 3, 5, and FIGS. 12 to 13, (e) a process of lifting a lifting beam (300) to the lower part of a bridge girder (21) and cutting a bridge girder (21), including a non-self-supporting concrete PC beam, at a location that does not cause interference with a pier or abutment (10) when the bridge girder (21) is lowered; and the invention relates to the process of cutting a bridge girder (21).
[0053] Here, as shown in FIGS. 9 to 13, the lifting beam (300) installed on the support member (611) is lifted to the lower part of the bridge girder (21) and the bridge girder (21) is cut.
[0054] In addition, the lifting beam (300) is raised to the lower part of the bridge girder (21) by the lifting jack (200) and serves to support the load of the bridge girder (21), including the bridge deck (20).
[0055] Meanwhile, when the bridge girder (21), including the bridge deck (20), is lowered by the lifting jack (200), the lifting beam (300) supports the bridge girder (21) so as not to interfere with the upper part (11) of the pier or abutment (10), and cutting lines (60) are marked on both sides of the bridge girder (21), and the bridge girder (21), including the bridge deck (20), is cut along the cutting lines (60).
[0056] In addition, as illustrated in FIGS. 1, 3, 5, and 14 to 15, the invention relates to a method for cutting and dismantling a structure including an overpass and a bridge girder using a composite functional direction change support and a composite functional mounting device, characterized by comprising: (f) a process of lowering a lifting beam (300) on which a bridge girder (21) is placed onto a heavy-duty transport means (607) and transporting it laterally to a longitudinal side road of an overpass or bridge to be dismantled, thereby dismantling the bridge girder (21);
[0057] Here, while removing the support timber (611) installed on the ground (605), the bridge girder (21), including the bridge deck (20), is loaded onto the heavy object transport means (607) on the ground (605) by means of the lifting jack (200) and lifting beam (300) on the upper part (11) of the bridge pier or abutment (10).
[0058] Additionally, the bridge girder (21), including the bridge deck (20) loaded on the heavy-duty transport means (607) on the ground (605), is removed from the site to be transported to a planned storage yard.
[0059] Meanwhile, as illustrated in FIG. 1 and FIG. 16, the process may further include a step of attaching the support member (110) to the upper part (11) of the pier or abutment (10) by connecting both ends of a second connecting member (150) that penetrates the upper part (11) of the pier or abutment (10) to one side of the support member (110) which is installed facing the upper part (11) of the pier or abutment (10) in step (b).
[0060] In addition, the second connecting member (150) penetrates the upper part (11) of the pier or abutment (10) and is coupled with a supporting member (110) installed on the front and rear sides of the upper part (11) of the pier or abutment (10) to cause the temporary dismantling structure (100) to move integrally with the upper part (11) of the pier or abutment (10). Any member of a shape having the required rigidity can be used, but it is preferable to use a steel rod that is easy to process for tensile and shear forces and for the fastening part.
[0061] Meanwhile, both ends of the second connecting member (150) are machined with screw threads so that the second connecting member (150) and the supporting member (110) can be joined using a nut, thereby increasing the joining force between the second connecting member (150) and the supporting member (110).
[0062] In addition, the above process includes: (a) cutting and dismantling a portion of the bridge deck (20) around the pier or abutment (10) symmetrically on both sides from the center of the upper part (11) of the pier or abutment (10); (b) installing a temporary structure (100) for dismantling the bridge girder (21) so as to protrude symmetrically on both sides from the center of the upper part (11) of the pier or abutment (10), and drilling a hole (600) penetrating the upper part (11) of the pier or abutment (10), installing a multi-functional direction change support (700) on one side of the hole (600), and installing a multi-functional mounting device (800) on the other side of the hole (600); and (c) installing a lifting jack (200) on the upper edge of the lifting jack base part (130) on both sides of the temporary structure (100) for dismantling the bridge girder (21); (d) A strand wire (400) connected to one lifting jack (200) of a temporary structure (100) for dismantling a bridge girder (21) passes through a composite function direction change support (700), a drilling section (600), and a composite function mounting section (800) to change direction and tensions the composite function mounting section (800) in a state of compression, and a strand wire (400) connected to the other lifting jack (200) of a temporary structure (100) for dismantling a bridge girder (21) installs a lifting beam (300) on the ground (605) and connects the lifting beam (300) and the lifting jack (200) with the strand wire (400); (e) a process of cutting the bridge girder (21), including a concrete PC beam belonging to the non-self-supporting type, at a location where the lifting beam (300) is raised to the lower part of the bridge girder (21) and does not cause interference with the pier or abutment (10) when the bridge girder (21) is lowered; and (f) a process of lowering the lifting beam (300) on which the bridge girder (21) is placed onto a heavy-duty transport means (607) and transporting it laterally to the side road in the longitudinal direction of the overpass or bridge to be dismantled, thereby dismantling the bridge girder (21); and the process is configured to be substituted as follows.
[0063] As illustrated in FIGS. 2 and FIGS. 6 to 8, the invention relates to (a) a process of cutting and dismantling a portion of the bridge deck (20) around the pier or abutment (10) symmetrically from the center of the upper part (11) of the pier or abutment (10); and
[0064] Here, cutting and dismantling a portion of the bridge deck (20) around the pier or abutment (10) symmetrically on both sides from the center of the upper part (11) of the pier or abutment (10) is configured to provide a type of work device to balance the reverse moment (-M) caused by the weight of the steel girder (22) including the bridge deck (20) on one side relative to the pier or abutment (10), which is diverted by the strand wire (400) connected to the other lifting jack (200) through the composite function direction change support (700), the drilling part (600), and the composite function mounting part (800).
[0065] Meanwhile, as illustrated in FIG. 2, (b) a lifting jack mounting bracket (13) is installed to protrude symmetrically on both sides from the upper center of the pier or abutment, and a hole (600) is drilled through the upper part of the pier or abutment, and a composite function direction change support (700) is installed on one side of the hole (600), and a composite function mounting bracket (800) is installed on the other side of the hole (600); and the invention relates to the process.
[0066] Here, the lifting jack support (13) is a steel structure having rigidity and corresponds to another temporary structure for the same purpose as the dismantling temporary structure (100).
[0067] In addition, as illustrated in FIG. 2, (c) the process of installing a lifting jack (200) on the upper part of both edges of the lifting jack holder (13); and the invention relates to
[0068] Here, it is preferable to use a strand jack for the lifting jack (200).
[0069] Meanwhile, as illustrated in FIGS. 2 to 5, (d) a strand wire (400) connected to one lifting jack (200) of the lifting jack support (13) is tensioned by passing through the composite function direction change support (700), the perforation part (600), and the composite function mounting part (800) to change direction and compress the composite function mounting part (800), and the strand wire (400) connected to the other lifting jack (200) of the lifting jack support (13) is tensioned by connecting to a binding part composed of a second protruding member (131) installed on one edge part of the steel girder (22), a lifting jack base part (130), and a first connecting member (140); and the invention relates to a process of tensioning the strand wire (400).
[0070] Here, as shown in FIGS. 17 and 19, the connecting part composed of a second protruding member (131) installed at one edge of the lifting jack support (13) in a direction perpendicular to both edge parts based on the longitudinal direction of the steel girder (22), a lifting jack base part (130), and a first connecting member (140) is intended to distribute the load acting on the connecting part of the steel girder (22) so as not to act as a concentrated load.
[0071] In addition, (e) a process of cutting the steel girder (22) at a location that does not cause interference with the pier or abutment (10) when the steel girder (22) is lowered; and the invention relates to.
[0072] Here, the illustration of cutting the steel girder (22) at a location that does not cause interference with the pier or abutment (10) when the steel girder (22) is lowered is the same as the illustration in Fig. 13 of the previous embodiment and is therefore omitted.
[0073] Meanwhile, (f) a process of lowering the cut steel girder (22) by adjusting the lifting jack (200) to unwind the strand wire (400) and loading it onto a heavy-duty transport means (607) to transport it laterally to a side road in the longitudinal direction of the overpass or bridge to be dismantled, thereby dismantling the steel girder (22); and a method for cutting and dismantling a structure including an overpass and a bridge girder using a composite functional direction change support and a composite functional mounting device, characterized by being replaced with
[0074] Here, the illustration of lowering the cut steel girder (22) by adjusting the lifting jack (200) to unwind the strand wire (400) and loading it onto the heavy-duty transport means (607) to transport it laterally to the longitudinal side road of the overpass or bridge to be dismantled, and thus dismantling the steel girder (22), is the same as the illustration in FIG. 14 and FIG. 15 of the previous embodiment and is therefore omitted. The heavy-duty transport means (607) is not limited to specific cases and is possible as long as it can safely transport the weight of the dismantled steel girder (22) from the site.
[0075] In addition, the present invention relates to a method for cutting and dismantling structures including elevated bridges and bridge girders using a composite functional direction change support and a composite functional mounting device, characterized in that the above-mentioned heavy-duty transport means (607) is replaced with a barge (603).
[0076] Here, the barge (603) is configured to be applied when the lower part of the bridge girder (21), including the steel girder (22) to be dismantled, is a river or stream.
[0077] Although the present invention has been illustrated and described with preferred embodiments as described above, it is not limited to the above-described embodiments, including construction in which the order of some processes is changed according to site conditions. It is understood that various modifications and variations are possible within the scope of the technical concept of the present invention and the equivalent scope of the claims to be described below by those skilled in the art, without departing from the spirit of the present invention.
[0079] 10: Pier or abutment 11: Top of pier or abutment
[0080] 12 : Base 13 : Lifting jack stand
[0081] 20: Bridge deck 21: Bridge girder
[0082] 22 : Steel girder
[0083] 50: Partially dismantled section
[0084] 60 : Cutting line 100 : Temporary structure for dismantling
[0085] 110 : Support member 120 : Base part
[0086] 121 : Support member 122 : First protruding member
[0087] 130 : Lifting jack base part 131 : Second protruding member
[0088] 132 : Lifting jack base 140 : First connecting member
[0089] 150 : Second connecting member 200 : Lifting jack
[0090] 300: Lifting beam 310: Horizontal beam
[0091] 320 : Vertical beam 330 : Reinforcing member
[0092] 400 : Strand wire
[0093] 600 : Drilling section 601 : Stream or river
[0094] 603 : Barge 605 : On land
[0095] 607 : Means of transporting heavy loads 611 : Support blocks
[0096] 700: Multifunctional Direction Change Support
[0097] 701: Central perforated support 703: Support part
[0098] 705: Roller rotation center axis 707: Roller
[0099] 709 : Support tube inserted into the perforation 710 : Joint
[0100] 711: First fixed part
[0101] 800: Multi-functional mounting bracket 801: Central perforated base
[0102] 803: Nut washer 805: Second fixing part
[0103] 809 : Perforation insertion tube Explanation of the symbols
[0078] <Explanation of Symbols>
Claims
Claim 1 delete Claim 2 A composite functional mounting device comprising: a hollow hole insertion tube having a diameter slightly smaller than the diameter of the hole and a predetermined length, installed by penetrating the upper part of a pier or abutment in a horizontal direction relative to the longitudinal direction of the bridge; a central hole base portion configured to be joined to one end of the hole insertion tube, having a predetermined area and thickness in a direction perpendicular to the longitudinal direction of the hole insertion tube, with a hole having a predetermined diameter formed in the center and a second hole for installing a fixing part having a predetermined diameter formed at a predetermined interval slightly inward from the edge; a second fixing part configured to be inserted into the second hole for installing a fixing part of the central hole insertion tube and fixed to the upper part of the pier or abutment; and a nut washer installed by joining to the center of one bottom surface of the central hole insertion tube; wherein the composite functional mounting device is configured to tension the strand wire of the exposed end portion of the nut washer. Claim 3 In a cutting and dismantling method for structures including elevated bridges and bridge girders using a composite functional direction-changing support and a composite functional mounting device, the method comprises: (a) a process of cutting and dismantling a portion of the bridge deck surrounding the pier or abutment symmetrically on both sides from the upper center of the pier or abutment; (b) a process of installing a temporary structure for dismantling the bridge girder so as to protrude symmetrically on both sides from the upper center of the pier or abutment, drilling a hole penetrating the upper part of the pier or abutment, installing a composite functional direction-changing support on one side of the hole and installing a composite functional mounting device on the other side of the hole; (c) a process of installing lifting jacks on the upper edges of the lifting jack base sections on both sides of the temporary structure for dismantling the bridge girder; and (d) a strand wire connected to one lifting jack of the temporary structure for dismantling the bridge girder is tensioned by changing direction through the composite functional direction-changing support, the hole, and the composite functional base section to compress the composite functional mounting device, and a strand wire connected to the other lifting jack of the temporary structure for dismantling the bridge girder is tensioned by installing a lifting beam on the ground. A method for cutting and dismantling a structure including an elevated bridge and a bridge girder using a multi-functional direction change support and a multi-functional mounting device, characterized by comprising: (e) a process of connecting a lifting beam and a lifting jack with a strand wire; (f) a process of lifting the lifting beam to the lower part of the bridge girder and cutting the bridge girder at a position that does not cause interference with a pier or abutment when the bridge girder is lowered; and (f) a process of lowering the lifting beam on which the bridge girder is placed onto a heavy-duty transport means and transporting it laterally to a road along the longitudinal side of the elevated bridge or bridge to be dismantled, thereby dismantling the bridge girder. Claim 4 In claim 3, the process comprises: (a) cutting and dismantling a portion of the bridge deck surrounding the pier or abutment symmetrically on both sides from the upper center of the pier or abutment; (b) installing a temporary structure for dismantling the bridge girder so as to protrude symmetrically on both sides from the upper center of the pier or abutment, drilling a hole penetrating the upper part of the pier or abutment, installing a multi-functional direction-changing support on one side of the hole and a multi-functional mounting device on the other side of the hole; (c) installing a lifting jack on the upper edge of the lifting jack base portions on both sides of the temporary structure for dismantling the bridge girder; (d) tensioning a strand wire connected to one lifting jack of the temporary structure for dismantling the bridge girder by changing its direction through the multi-functional direction-changing support, the hole, and the multi-functional mounting device to a state of compressing the multi-functional mounting device, and installing a lifting beam on the ground and connecting the lifting beam and the lifting jack with the strand wire connected to the other lifting jack of the temporary structure for dismantling the bridge girder; and (e) the lifting beam A process of lifting the bridge girder to the lower part and cutting the bridge girder at a position that does not cause interference with the pier or abutment when lowering the bridge girder; (f) a process of lowering the lifting beam on which the bridge girder is placed onto a heavy-duty transport means and transporting it laterally to a road along the longitudinal side of the overpass or bridge to be dismantled to dismantle the bridge girder; and (a) a process of cutting and dismantling a portion of the bridge deck around the pier or abutment symmetrically on both sides from the upper center of the pier or abutment; (b) a process of installing a lifting jack support so as to protrude symmetrically on both sides from the upper center of the pier or abutment, drilling a hole penetrating the upper part of the pier or abutment, installing a multi-functional direction change support on one side of the hole and installing a multi-functional mounting device on the other side of the hole; and (c) a process of installing lifting jacks on the upper edges of both sides of the lifting jack support.(d) a process of tensioning a strand wire connected to one lifting jack of a lifting jack stand by changing its direction through a composite function direction change support, a drilling section, and a composite function mounting section to compress the composite function mounting section, and a process of tensioning a strand wire connected to the other lifting jack of the lifting jack stand by connecting it to a binding section composed of a second protruding member installed on one edge of the steel girder, a lifting jack base section, and a first connecting member; (e) a process of cutting the steel girder at a location that does not cause interference with a pier or abutment when the steel girder is lowered; and (f) a process of lowering the cut steel girder by adjusting the lifting jack to unwind the strand wire, loading it onto a heavy-duty transport means, and transporting it laterally to a longitudinal side road of the overpass or bridge to be dismantled, thereby dismantling the steel girder; characterized by being replaced with the above steps. Claim 5 A method for cutting and dismantling structures including elevated bridges and bridge girders using a multi-functional directional change support and a multi-functional mounting device, characterized in that, in any one of claims 3 to 4, the heavy load transport means is replaced with a barge.
Citation Information
Patent Citations
Gantry crane with function of diving and vertically cutting objects
CN119797186A