CN113957813A - Expandable truss member, expandable rush-repair beam truss and emergency rush-repair beam - Google Patents
Expandable truss member, expandable rush-repair beam truss and emergency rush-repair beam Download PDFInfo
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Abstract
本发明涉及一种可展式桁架构件、可展式抢修梁桁架及应急抢修梁，可展式桁架构件包括上弦杆和下弦杆，所述上弦杆和下弦杆之间平行设置有若干外斜腹杆，所述外斜腹杆上下两端分别与上弦杆和下弦杆铰连，还包括滑动设置在所述下弦杆上的滑动副下弦杆，所述滑动副下弦杆与所述上弦杆之间平行设置有若干内斜腹杆，所述内斜腹杆上下两端分别与上弦杆和滑动副下弦杆铰连，下弦杆和滑动副下弦杆向相反方向移动，实现桁架构件展开/折叠，若干的可展式桁架构件相连接形成中间构架组件，中间构架组件两端连接设置端部构件后形成可展式抢修梁桁架，若干可展式抢修梁桁架、上平联和下平联可组成应急抢修梁用于公路、铁路桥梁抢修。
The invention relates to a deployable truss member, a deployable emergency repair beam truss and an emergency repair beam. The deployable truss member includes an upper chord and a lower chord, and a plurality of outer inclined webs are arranged in parallel between the upper chord and the lower chord. The upper and lower ends of the outer inclined web bar are hinged with the upper chord and the lower chord, respectively, and also includes a sliding auxiliary lower chord that is slidably arranged on the lower chord, between the sliding auxiliary lower chord and the upper chord A number of inner oblique web bars are arranged in parallel, and the upper and lower ends of the inner oblique web bar are hinged with the upper chord and the sliding auxiliary lower chord, respectively. The deployable truss members are connected to form an intermediate frame assembly, and the two ends of the intermediate frame assembly are connected with end members to form a deployable emergency repair beam truss. Beams are used for emergency repair of highway and railway bridges.
Description
Technical Field
The invention relates to the technical field of bridge emergency repair, in particular to an expandable truss member, an expandable emergency repair beam truss and an emergency repair beam.
Background
The bridge is used as an important component of traffic infrastructure, is a weak node of a road and railway traffic line, can be damaged under natural disasters, is a key striking target of an enemy in wartime, and is a key research object of traffic emergency guarantee. The existing rush-repair equipment for the railway beam part in China is determined according to the national economic and technical level of the sixty-seven decades of the last century, the characteristics of the rush-repair of the bridge in the war at that time and the tactical requirements, and the modern railway bridge is greatly different from the railway bridge at the initial stage of the construction in the aspects of structural form, bridge span, load grade, traffic speed and the like. The highway emergency repair beam has the defects of few types, single structural form, large storage occupation space, small structural rigidity and the like. The technology and tactical indexes of the prior railway and highway emergency repair beam, the emergency repair technology and the method can not completely adapt to the requirement of the modern bridge emergency repair.
Disclosure of Invention
The invention aims to solve the technical problems that an expandable truss member, an expandable rush-repair beam truss and an emergency rush-repair beam are provided, and the technical problems that the existing rush-repair bridge is low in load level, large in storage and transportation space, multiple in member types, low in assembling and erecting speed and the like are solved.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a deployable truss member for emergency repair beams, comprising: parallel arrangement's last chord member and lower chord member, parallel arrangement has a plurality of outer oblique web members between last chord member and the lower chord member, outer oblique web member upper and lower both ends respectively with last chord member and lower chord member hinge, still including the slip setting be in the vice lower chord member of slip on the lower chord member, the vice lower chord member of slip with parallel arrangement has a plurality of interior oblique web members between the last chord member, interior oblique web member upper and lower both ends respectively with last chord member and the vice lower chord member hinge of slip, outer oblique web member with interior oblique web member slope opposite direction, lower chord member and the vice lower chord member of slip remove to opposite direction, realize truss member expansion fold condition.
As a further improvement of the invention, the lower chord of the sliding pair is arranged in the middle of the lower chord, the outer oblique web members are arranged on both sides of the inner oblique web member, and an inner oblique web member is clamped between the two outer oblique web members.
As a further improvement of the invention, two lower chord rib plates are arranged on the upper end surface of the lower chord along the length direction of the lower chord, the two lower chord rib plates and the lower chord form a concave slide rail, and the lower chord of the sliding pair is arranged in the concave slide rail in a sliding manner;
the lower chord rib plate is provided with a plurality of sliding auxiliary fixing holes along the length direction, and the sliding auxiliary lower chord is provided with a lower chord connecting hole corresponding to the sliding auxiliary fixing holes and used for penetrating through a conical pin bolt connecting pair to fix the expandable truss member at unfolding/folding.
As a further improvement of the invention, the sliding pair lower chord comprises an elongated transverse plate, two vertical plates are symmetrically arranged on the upper end surface of the transverse plate, a bushing plate is arranged on the side of the lower chord rib plate facing the sliding pair lower chord, the lower end surface of the bushing plate abuts against the upper end surface of the end part of the transverse plate for limiting the vertical movement of the transverse plate, and the side surface of the bushing plate abuts against the side surface of the vertical plate for guiding the sliding of the sliding pair lower chord.
As a further improvement of the invention, the taper pin bolt connection pair comprises a sleeve nut and a taper pin bolt, the patch plate is provided with a patch plate through hole corresponding to the slide pair fixing hole, and the taper of the patch plate through hole, the slide pair fixing hole and the lower chord connecting hole is consistent for penetrating the taper pin bolt so as to fixedly connect the slide pair lower chord with the lower chord rib plate.
A beam truss is salvageed to expandable formula, it includes both ends framework and a plurality of claim 1 truss component, a plurality of truss component interconnect forms the middle framework subassembly of expandable formula, the last chord member, lower chord member and the vice lower chord member of slip of each truss component interconnect respectively, two the end framework sets up respectively the both ends of middle framework subassembly make the beam truss is salvageed to expandable formula constitute a complete beam truss of salvageing of expandable formula.
As a further improvement of the present invention, when the expandable truss member is in the expanded state, the end frame at the left end is a second end frame, and the end frame at the right end is a third end frame;
the second end framework comprises a second end framework upper chord, a second end framework lower chord and a second end framework diagonal web member, the left end of the second end framework upper chord is connected with the left end of the second end framework lower chord through a first vertical web member, the right end of the second end framework upper chord is connected with the upper chord, the right end of the second end framework lower chord is connected with the sliding pair lower chord, the lower end of the first vertical web member is connected with the lower chord, and the second end framework diagonal web member is arranged in parallel with the inner diagonal web member;
the third end framework comprises a third end framework upper chord, a third end framework lower chord and two third end framework diagonal web members, the right end of the third end framework upper chord and the right end of the third end framework lower chord are connected through the second vertical web member, the left end of the third end framework upper chord is connected with the upper chord, the third end framework lower chord is connected with the lower chord, the lower end of the second vertical web member is connected with the sliding pair lower chord, and the two third end framework diagonal web members are symmetrically arranged and are parallel to the outer diagonal web members;
and the second end part framework and the third end part framework are connected to form the expandable emergency repair beam truss into a whole rectangular sheet.
The utility model provides a contain the emergency repair roof beam of above-mentioned expandable first-aid repair girder truss, it includes: the two expandable emergency repair beam trusses are connected in parallel at the upper part and the lower part;
two the up end of beam truss is salvageed to the formula that can expand passes through last parallel connection connects, two the lower terminal surface of beam truss is salvageed to the formula that can expand passes through down parallel connection connects.
As a further improvement of the invention, the upper flat connection comprises a plurality of upper flat connection members which are arranged in parallel and equidistantly along the length direction of the expandable emergency repair beam truss, a plurality of upper flat connection plates are arranged on the upper flat connection members, the upper flat connection members are fixedly connected with the two expandable emergency repair beam trusses through the upper flat connection plates, and bridge deck system members are arranged on the upper end faces of the upper flat connection members;
the lower parallel connection comprises a plurality of lower parallel connection members arranged in parallel and equidistantly along the length direction of the expandable rush-repair beam truss, and the lower parallel connection members are the same as the upper parallel connection members in structure.
As a further improvement of the invention, the two expandable emergency repair beam trusses are connected through a plurality of cross-linking assemblies, and the plurality of cross-linking assemblies are arranged at intervals along the length direction of the expandable emergency repair beam truss for improving the mechanical property of the emergency repair beam.
As a further improvement of the present invention, the cross-linking assembly includes four cross-linking connecting members and two cross-linking support rods, the four cross-linking connecting members are respectively disposed at inner sides of two upper chords and two lower chords of the two expandable trusses, upper ends of the cross-linking support rods are connected to the cross-linking connecting member on the upper chord on one side, lower ends of the cross-linking support rods are connected to the cross-linking connecting member on the lower chord on the other side, and the two cross-linking support rods are disposed in a crossing manner.
The utility model provides a contain the emergency repair roof beam of above-mentioned expandable first-aid repair girder truss, it includes: the expandable rush-repair beam truss, a plurality of cross connection assemblies, an upper parallel connection and a lower parallel connection;
the two expandable rush-repair beam trusses on the outer side, the upper flat connection and the lower flat connection enclose an outer space truss beam with a square-shaped cross section;
the two expandable rush-repair beam trusses on the inner side are connected through a plurality of transverse connection assemblies to form an inner space truss beam;
the inner space truss girder can slide in the outer space truss girder under the folded state and is used as a guide girder of the emergency repair girder.
The utility model provides a contain the emergency repair roof beam of above-mentioned expandable first-aid repair girder truss, it includes: the expandable emergency repair beam trusses are symmetrically arranged, the upper end faces of the two expandable emergency repair beam trusses are connected through the upper flat connection, and the lower end faces of the two expandable emergency repair beam trusses are connected through the lower flat connection; two but the beam truss is salvageed to the expansion formula, go up the plat joint and form the holding formula down that the cross-section is the square character form and salvage the roof beam down with the plat joint down, the bridge floor is the component and is laid down the plat joint top down and be located two but between the beam truss is salvageed to the expansion formula.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the expandable rush-repair beam truss is simple in structure and comprises expandable truss members and end part frames, wherein the lower chord of the sliding pair for adjusting the expandable truss members can adjust the expandable truss members to be in an expanded state or a semi-expanded state or a folded state, so that the expandable rush-repair beam truss is suitable for rush-repair of bridges with different beam heights and is convenient to store, transport, assemble and erect. And applying a corresponding end part framework after fixedly connecting the lower chord and the lower chord of the sliding pair to enable the expandable rush-repair beam truss to form a truss structure with unchanged geometry.
The expandable rush-repair beam truss can meet the requirement of rush-repair of bridges with different spans by increasing the number of expandable truss members, and the expandable truss members are expanded/folded in a sliding mode of the lower chord members of the sliding pairs, so that the expansion difficulty is reduced.
Compared with the existing framework type emergency repair beam, the emergency repair beam can effectively reduce the storage and transportation space and improve the transportation and loading coefficients; compared with the existing linear rod type emergency repair beam, the type of equipment parts can be greatly reduced, the assembling workload is reduced, the assembling and erecting speed of the emergency repair beam is improved, the storage and transportation space is saved, and the transportation loading coefficient is improved. The single truss girder has high strength and high rigidity, and is suitable for the first-aid repair of bridges with different spans and load grades through the combination of different numbers of truss girders and different girder heights. The truss girder is arranged in a vertical/inverted manner, so that the rapid first-aid repair of the top-supported bridge and the bottom-supported bridge can be adapted.
When the emergency repair beam adopts four or more expandable girders, and when the expandable emergency repair beam girders are expanded, two/three expandable emergency repair beam girders on the inner side form an inner space truss girder, a plurality of expandable emergency repair beam girders on the outer side, an upper parallel connection and a lower parallel connection form an outer space truss girder, and the inner space truss girder can be used as a guide girder of the outer space truss girder and also used as a guide girder, so that the emergency repair beam does not need the assistance of other large-scale hoisting equipment, is suitable for emergency repair operation of bridges under severe working conditions such as bridge-tunnel connection, high mountain gorges and the like, and has strong environmental adaptability and high erection efficiency.
The expandable truss members are connected through the tension bolt connecting pair, and the lower chord members of the sliding pair are connected through the tapered pin bolt connecting pair, so that pin hole gaps generated in the existing emergency repair beam shear pin shaft-pin hole connecting mode can be effectively eliminated, the deformation of the emergency repair beam is reduced, and the rigidity of the emergency repair beam is improved.
Drawings
Fig. 1 is a perspective view of the expandable truss member of an embodiment in an expanded state.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a front view of the expandable truss member of embodiment 1 in a semi-expanded state.
Fig. 4 is a front view of the expandable truss members of embodiment 1 in a folded state.
Fig. 5 is a schematic view of the first end frame of embodiment 1.
Fig. 6 is a schematic view of the second end frame of embodiment 1.
Fig. 7 is a schematic view of a third terminal frame of embodiment 1.
Fig. 8 is a sectional view taken in the direction a of fig. 2.
Fig. 9 is a sectional view taken in the direction B in fig. 2.
Fig. 10 is a sectional view taken along the direction C in fig. 2.
FIG. 11 is an exploded view of the taper pin bolt connection sub of example 1.
Fig. 12 is a schematic view of an upper parallel member of embodiment 1.
Fig. 13 is a schematic structural view of the man-shaped web member high-height beam type emergency repair beam of embodiment 1.
Fig. 14 is a schematic structural view of a beam for emergency repair of a height beam type among the X-shaped web members of embodiment 1.
Fig. 15 is a schematic side structural view of the emergency repair beam of embodiment 2.
Fig. 16 is a schematic side structural view of an emergency repair beam of embodiment 3.
Fig. 17 is a schematic side structure view of an emergency repair beam of embodiment 4.
Fig. 18 is a schematic side structure view of an emergency repair beam of embodiment 5.
Wherein: 100 expandable emergency repair girder truss; 1, a lower chord; 1-1 lower chord rib plate; 1-2 lower chord flanges; 1-3 connecting holes between the lower chord pieces; 1-4 sliding pair fixing holes; 1-40 end sliding pair fixing holes; 1-41 first set of sliding pair fixing holes; 1-42 second set of sliding pair fixing holes; 1-5 outside diagonal web member hinge holes;
2, upper chord; 2-1 upper chord rib plate; 2-2, a chord flange; 2-3, connecting holes between the upper chord pieces; 2-4 oblique web member hinge hole
3, sliding the lower chord of the pair; 3-1, connecting holes of the lower chord; 3-2, sliding auxiliary flanges; 3-3, hinging holes of the inner oblique web members; 3-4 of a transverse plate; 3-5 vertical plates;
4, an outer oblique web member; 5, an inner inclined web member; 6 a first end frame; 6-1, connecting a flange of a first sliding pair; 6-2, connecting a flange at the transverse part; 6-3, connecting a flange at the vertical part;
7 a second end frame; 7-1 second end frame diagonal web member; 7-2 second end frame lower chord; 7-3 second end frame upper chord; 7-4, connecting flanges of the lower chord of the second end part framework; 7-5 connecting flanges of a sliding pair of the second end part framework; 7-6 connecting flanges of upper chords of the second end part framework; 7-7 a first vertical web member;
8 a third end frame; 8-1 a third end frame diagonal web member; 8-2 third end frame lower chords; 8-3 third end frame upper chords; 8-4 connecting flanges of lower chords of third end frameworks; 8-5, connecting flanges of upper chords of third end frameworks; 8-6 third end frame sliding pair connecting flanges; 8-7 second vertical web members;
9 a first pin; 10 a second pin shaft; 11 a third pin shaft; 12, supplementing plates; 13 a conical pin bolt connecting pair; 13-1 sleeve nut; 13-2 taper pin;
14 upper parallel connection members; 14-1, connecting plates are connected in a flat mode;
15 bridge deck system members; 16 transverse supporting rods; 17 transverse to the connecting element.
Detailed description of the preferred embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail and fully with reference to the following embodiments.
Example 1:
a deployable emergency repair girder truss 100 as shown in fig. 1 to 14 includes two end frames and a plurality of deployable truss members disposed between the two end frames, the deployable truss members being connected to each other to form an intermediate frame assembly; the expandable truss component comprises an upper chord 2, a lower chord 1, a plurality of inner oblique web members 5, a plurality of outer oblique web members 4 and a sliding pair lower chord 3.
As shown in fig. 1, the upper chord 2, the lower chord 1 and the sliding pair lower chord 3 are arranged in parallel, and the sliding pair lower chord 3 is arranged in the middle of the lower chord 1 in a sliding manner.
As shown in fig. 1, fig. 2, fig. 3, fig. 8 and fig. 9, the upper end of the inner diagonal web member 5 is hinged to the upper chord member 2 through a first pin shaft 9, the lower end of the inner diagonal web member 5 is hinged to the lower chord member 3 of the sliding pair through a third pin shaft 11, and the inner diagonal web member 5 is arranged in parallel at equal intervals to form a parallelogram multi-link variable mechanism.
As shown in fig. 1, fig. 2, fig. 3, fig. 8 and fig. 9, two sides of the inner diagonal web member 5 are symmetrically provided with two outer diagonal web members 4, the inner diagonal web member 5 and two upper ends of the outer diagonal web members 4 are hinged on the upper chord member 2 through a first pin shaft 9, the lower end of the outer diagonal web member 4 is hinged with the lower chord member 1 through a second pin shaft 10, the outer diagonal web member 4 is opposite to the inclination direction of the inner diagonal web member 5, two symmetrical parallelogram multi-link variable mechanisms are formed on two sides of the inner diagonal web member 5, and the parallelogram multi-link variable mechanism formed by the upper chord member 2, the lower chord member 1 and the outer diagonal web members 4 is opposite to the parallelogram multi-link variable mechanism formed by the upper chord member 2, the sliding pair lower chord member 3 and the inner diagonal web members 5.
The preferable outer diagonal web members 4 and the inner diagonal web members 5 can adopt H-shaped section steel, and the section strength and rigidity of the inner diagonal web members 5 are 2 times of those of the outer diagonal web members 4 of the same expandable truss member, so that the mechanical properties of the diagonal web members in two directions of the expandable truss member are equivalent.
Sliding the sliding pair lower chord 3 makes the expandable truss member in an expanded state (see fig. 2), a semi-expanded state (see fig. 3) or a folded state (see fig. 4). When the expandable truss member of the expandable emergency repair girder truss 100 in this embodiment is in an expanded state, the inner diagonal web members 5 and the outer diagonal web members 4 form a human-shaped web member high-height girder-type expandable truss member. When the expandable truss member of the expandable emergency repair girder truss 100 in this embodiment is in a half-expanded state (the half-expanded state in this embodiment is not limited to the half-expanded state), the inner diagonal web members 5 and the outer diagonal web members 4 form a high beam type expandable truss member among X-type web members. Different expansion states make the expandable rush-repair beam truss 100 of this embodiment highly different, and the bridge that is applicable to different operating modes is salvageed.
As shown in fig. 8, 9 and 10, the cross sections of the upper chord 2 and the lower chord 1 are both H-shaped, the lower end surface of the upper chord 2 is provided with two upper chord rib plates 2-1 extending along the length direction, the two upper chord rib plates 2-1 and two side plates of the upper chord 2 divide the lower end surface of the upper chord 2 into 3 regions, wherein the left region and the right region are symmetrically arranged for hinging the outer diagonal web member 4, and the middle region is used for hinging the inner diagonal web member 5; the upper end face of the lower chord 1 is provided with two lower chord rib plates 1-1 which extend along the length direction of the lower chord 1, the upper end face of the lower chord 1 is divided into 3 regions by the two lower chord rib plates 1-1 and two side plates of the lower chord 1, wherein the left region and the right region are symmetrically arranged and used for hinging the outer oblique web members 4, the middle region forms a concave slide rail, the lower chord 3 of the sliding pair is arranged in the concave slide rail in a sliding manner, the design fully utilizes the inner space of the upper chord and the lower chord, the space utilization rate of the embodiment is increased, and the stable and reliable sliding process of the lower chord 3 of the sliding pair is ensured.
Referring to fig. 1 to 4, a plurality of sliding pair fixing holes 1-4 are formed in the lower chord 1-1 along the length direction thereof, and a lower chord connecting hole 3-1 is formed in the sliding pair lower chord 3 corresponding to the sliding pair fixing holes 1-4, and is used for inserting a tapered pin bolt connecting pair 13 to fix the expandable truss member in an expanded state, a semi-expanded state or a folded state.
In the embodiment, end sliding pair fixing holes 1-40, a first group of sliding pair fixing holes 1-41 and a second group of sliding pair fixing holes 1-42 are sequentially formed in the lower chord rib plate 1-1 corresponding to each outer oblique web member 4 from left to right. Moving the lower chord 3 of the sliding pair to ensure that a lower chord connecting hole 3-1 at the leftmost end on the lower chord 3 of the sliding pair is opposite to and fixed with a sliding pair fixing hole 1-40 at the end part, and connecting a subsequent lower chord connecting hole 3-1 with a subsequent sliding pair fixing hole 1-4 (or the lower chord 1 of the adjacent expandable truss component) to ensure that the expandable truss component is a herringbone web member high-height beam type expandable truss component (see figure 2);
moving the lower chord 3 of the sliding pair to ensure that a lower chord connecting hole 3-1 at the leftmost end on the lower chord 3 of the sliding pair is opposite to and fixed with a first group of sliding pair fixing holes 1-41, and a subsequent lower chord connecting hole 3-1 is connected with a subsequent sliding pair fixing hole 1-4 (or on the lower chord 1 of the adjacent expandable truss component or the lower chord 8-3 of the third end framework) to ensure that the expandable truss component is an X-shaped web member middle-high beam type expandable truss component (see figure 3);
and moving the lower chord 3 of the sliding pair to ensure that the lower chord connecting hole 3-1 at the leftmost end on the lower chord 3 of the sliding pair is opposite to and fixed with the second group of sliding pair fixing holes 1-42, and the subsequent lower chord connecting hole 3-1 is connected with the subsequent sliding pair fixing hole 1-4 (or on the lower chord 1 of the adjacent expandable truss component or the lower chord 8-3 of the third end framework), so that the expandable truss component is in a folded state and is convenient to transport or can be used as an auxiliary front guide beam during erection.
As shown in fig. 10, the sliding pair lower chord 3 includes an elongated transverse plate 3-4, two vertical plates 3-5 are symmetrically disposed on the upper end surface of the transverse plate 3-4, the lower chord rib 1-1 is provided with a supplementary plate 12 facing the side of the sliding pair lower chord 3, the lower end surface of the supplementary plate 12 abuts against the upper end surface of the end portion of the transverse plate 3-4 to limit the up-and-down movement of the transverse plate 3-4, and the side surface of the supplementary plate 12 abuts against the side surfaces of the vertical plates 3-5 to guide the sliding of the sliding pair lower chord 3.
As shown in fig. 10 and 11, the taper pin bolt connection pair includes a sleeve nut 13-1 and a taper pin bolt 13-2, the patch 12 is provided with a patch through hole corresponding to the slide pair fixing hole 1-4, and the taper of the patch through hole, the slide pair fixing hole 1-4 and the lower chord connection hole 3-1 is consistent and is used for penetrating the taper pin bolt 13-2 to fixedly connect the slide pair lower chord 3 with the lower chord rib plate 1-1. The design aims to eliminate the connected pin hole gap as much as possible and reduce the deformation of the rush repair bridge. The corresponding hole positions of the joints of the lower chord 3 and the lower chord 1 of the sliding pair are provided with holes with the same taper. The taper pin bolt connecting pair 13 comprises a taper pin bolt 13-2 and a sleeve nut 13-1, the taper pin bolt 13-2 comprises a regular polygon bolt cap, a taper pin bolt column section and a cylindrical thread section, the sleeve nut 13-1 comprises a circular ring sleeve section and a nut section, the circular ring sleeve section is sleeved on the outer side of the taper pin bolt column section in a clearance mode, and the nut section is matched with the cylindrical thread section of the taper pin bolt 13-2, so that the taper pin bolt 13-2 is kept to be closely attached to a taper pin hole (see figure 10) while the thickness error of a connecting plate is adapted.
The preferred expandable truss members can adopt chord member and web member combinations with different section strengths, the outline dimensions of all the expandable truss members are the same, the section strengths of the upper chord member and the lower chord member of the expandable truss members used in the splicing span are high, the section strengths of the inner oblique web member and the outer oblique web member are low, the section strengths of the upper chord member and the lower chord member of the expandable truss members used in the splicing span are low, and the section strengths of the inner oblique web member and the outer oblique web member are high.
Referring to fig. 1 and 2, in the embodiment, a rectangular upper chord flange 2-2 is arranged at the end of an upper chord 2, a concave lower chord flange 1-2 is arranged at the end of a lower chord 1, a sliding pair flange 3-2 nested with the lower chord flange 1-2 is arranged at the end of a sliding pair lower chord 3, two adjacent upper chords 2, lower chords 1 and sliding pair lower chords 3 are respectively connected with each other through the upper chord flange 2-2, the lower chord flange 1-2 and the sliding pair flange 3-2, and a plurality of expandable truss members are connected into an intermediate frame assembly in this way.
Referring to fig. 5 and 13, when the middle frame assembly is in the unfolded state, the end frame is the first end frame 6, the first end frame 6 is in an L shape as a whole, and the two first end frames 6 are arranged in a central symmetry manner, so that the expandable emergency repair beam truss 100 is in a complete rectangular sheet shape as a whole. The first end part framework 6 at the left end is arranged in an inverted L shape, the transverse part of the first end part framework is connected with the upper chord flange 2-2 through a transverse part connecting flange 6-2, and the vertical part of the first end part framework is connected with the lower chord flange 1-2 through a vertical part connecting flange 6-3; the transverse part of the first end frame 6 on the right side is connected with the lower chord flange 1-2 through a transverse part connecting flange 6-2, the vertical part of the first end frame is connected with the upper chord flange 1-2 through a vertical part connecting flange 6-3, and the corner part of the first end frame is connected with the sliding pair flange 3-2 through a first sliding pair connecting flange 6-1.
Referring to fig. 6, 7 and 14, in the half-spread state of the middle frame assembly, the end frame at the left end is the second end frame 7, and the end frame at the right end is the third end frame 8. The second end framework 7 comprises a second end framework upper chord 7-3, a second end framework lower chord 7-2 and a second end framework diagonal web member 7-1, the left end of the second end framework upper chord 7-3 is connected with the left end of the second end framework lower chord 7-2 through a first vertical web member 7-7, the right end of the second end framework upper chord 7-3 is connected with the upper chord flange 2-2 through a second end framework upper chord connecting flange 7-6, the right end of the second end framework lower chord 7-2 is connected with the lower chord flange 1-2 through a second end framework sliding pair connecting flange 7-5, the lower end of the first vertical web member 7-7 is connected with the lower chord flange 1-2 through a second end framework lower chord connecting flange 7-4, the second end part framework diagonal web member 7-1 is arranged in parallel with the inner diagonal web member 5;
the third end framework 8 comprises a third end framework upper chord 8-3, a third end framework lower chord 8-2 and two third end framework diagonal web members 8-1, the right end of the third end framework upper chord 8-3 is connected with the right end of the third end framework lower chord 8-2 through a second vertical web member 8-7, the left end of the third end framework upper chord 8-3 is connected with the upper chord flange 2-2 through a third end framework upper chord connecting flange 8-5, the left end of the third end framework lower chord 8-2 is connected with the lower chord flange 1-2 through a third end framework lower chord connecting flange 8-4, the lower end of the second vertical web member 8-7 is connected with the sliding pair flange 3-2 through a third end framework sliding pair connecting flange 8-6, the two third end part framework diagonal web members 8-1 are symmetrically arranged and are parallel to the outer diagonal web member 4; the second end framework 7 and the third end framework 8 are connected to form the expandable emergency repair beam truss 100 into a complete rectangular sheet.
Example 2:
as shown in fig. 13, 14 and 15, an emergency repair beam comprises two expandable repair beam trusses 100 of example 1, a plurality of cross-linking components, an upper parallel link and a lower parallel link; two the up end of beam truss 100 is salvageed to the expandable passes through the connection is established ties to last tie, two the lower terminal surface of beam truss 100 is salvageed to the expandable passes through the connection is established ties down, and is a plurality of the cross-linking subassembly is followed the beam truss is salvageed to the expandable 100 long direction intervals set up and are used for improving the mechanical properties of emergency repair roof beam. The upper flat connection comprises a plurality of upper flat connection members 14 which are arranged in parallel at equal intervals along the length direction of the expandable emergency repair beam truss 100, a plurality of upper flat connection plates 14-1 are arranged on the upper flat connection members 14, the upper flat connection members 14 are fixedly connected with the upper chords 2 of the two expandable emergency repair beam trusses 100 through the upper flat connection plates 14-1 through upper chord inter-piece connection holes 2-3, and bridge deck system members 15 are arranged on the upper end faces of the upper flat connection members 14;
the lower parallel connection comprises a plurality of lower parallel connection components arranged along the length direction of the expandable rush-repair beam truss 100 in parallel and at equal intervals, the lower parallel connection components are the same as the upper parallel connection components in structure, and the lower parallel connection components are fixedly connected with the lower chord 1 of the expandable rush-repair beam truss 100 through lower chord sheet connecting holes 1-3.
As shown in fig. 15, the cross-linking component includes four cross-linking connecting pieces 17 and two cross-linking supporting rods 16, four the cross-linking connecting pieces 17 are respectively arranged in two the insides of two upper chords 2 and two lower chords 1 of the expandable emergency repair beam truss 100, the upper end of the cross-linking supporting rod 16 is connected with the cross-linking connecting piece 17 on the upper chord 2 on one side, the lower end of the cross-linking supporting rod 16 is connected with the cross-linking connecting piece 17 on the lower chord 1 on the other side, and the cross-linking supporting rods 16 are arranged in a crossing manner.
Example 3:
an emergency repair beam as shown in fig. 13, 14 and 16 comprises 3 pieces of expandable repair beam trusses 100 of example 1, an upper parallel connection and a lower parallel connection; the upper parallel connection and the lower parallel connection in the embodiment are the same as the upper parallel connection and the lower parallel connection in the embodiment 2, the middle expandable emergency repair beam truss 100 is arranged on the upper parallel connection and the lower parallel connection in the middle, and the left expandable emergency repair beam truss 100 and the right expandable emergency repair beam truss 100 are symmetrically arranged on two sides of the middle expandable emergency repair beam truss 100. Preferably, the odd number pieces of expandable emergency repair beam truss 100 are arranged in the upper parallel connection and the lower parallel connection in the middle by adopting one expandable emergency repair beam truss 100 in the middle, and the rest expandable emergency repair beam trusses 100 are arranged on two sides of the expandable emergency repair beam truss 100 in the middle in a bilateral symmetry manner.
Example 4:
an emergency repair beam as shown in fig. 13, 14 and 17 comprises four expandable repair beam trusses 100 of embodiment 1, a plurality of cross-linking components, an upper parallel link and a lower parallel link.
The upper and lower parallel links of this embodiment are identical in structure to those of embodiment 2.
The cross-linking component of this embodiment is consistent with the cross-linking component structure principle of embodiment 2, and the length of the cross-linking supporting rod of this embodiment is adjusted adaptively.
The two pieces of the expandable rush-repair beam truss 100 on the outer side, the upper parallel connection and the lower parallel connection enclose an outer space truss beam with a square-shaped cross section; the two inner expandable rush-repair beam trusses 100 are connected through a plurality of cross-linking assemblies to form an inner space truss beam; the inner space truss girder can slide in the outer space truss girder under the folding state to be used as a guide girder of the emergency repair girder, and the outer space truss girder can slide outside the inner space truss girder under the folding state to longitudinally move in place. After the inner space truss girder and the outer space truss girder are unfolded, two adjacent expandable rush-repair girder trusses 100 are respectively connected with each other through connecting holes 2-3 between the upper chord pieces and connecting holes 1-3 between the lower chord pieces.
Example 5:
an emergency repair beam as shown in fig. 13, 14 and 18 comprises two expandable repair beam trusses 100 of example 1, an upper parallel connection and a lower parallel connection. The expandable rush-repair beam truss 100 is symmetrically arranged on two sides, and the upper parallel connection and the lower parallel connection form a lower bearing type rush-repair beam with a square-shaped cross section.
The expandable emergency repair beam truss 100 of the embodiment is arranged in an inverted mode, and is suitable for rapid emergency repair of a through bridge. At this time, after the inverted expandable emergency repair girder truss 100 in the folded state is in place at the emergency repair bridge position, the upper chord member located below is fixed, and the lower chord member located above and the lower chord member of the sliding pair slide relatively, so that the expansion operation of the emergency repair girder can be facilitated.
The upper flat link of this embodiment corresponds to the upper flat link structure of embodiment 2.
The lower parallel connection section of the embodiment is larger, and the lower parallel connection section is also used as a bridge deck system cross beam on which bridge deck system members are arranged.
Preferably, emergency repair roof beam every side is provided with 1 and above expandable salvagees roof beam truss 100 in this embodiment, and the expandable salvagees roof beam truss 100 quantity of emergency repair roof beam both sides is unanimous, is applicable to the higher operating mode of emergency repair roof beam bearing requirement.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still make modifications to the technical solutions described in the foregoing embodiments, or may substitute some technical features of the embodiments; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (13)
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| CN202111337821.0A CN113957813A (en) | 2021-11-12 | 2021-11-12 | Expandable truss member, expandable rush-repair beam truss and emergency rush-repair beam |
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| CN202111337821.0A CN113957813A (en) | 2021-11-12 | 2021-11-12 | Expandable truss member, expandable rush-repair beam truss and emergency rush-repair beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241012A (en) * | 2023-02-01 | 2023-06-09 | 南通欧本建筑科技有限公司 | A bolt-assembled light truss with partial double-layer web |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU633996A1 (en) * | 1976-04-16 | 1978-11-25 | Специальное Конструкторское Бюро Всесоюзного Научно-Исследовательского Института По Монтажным И Специальным Строительным Работам | Collapsible metal truss |
| US4546591A (en) * | 1983-11-23 | 1985-10-15 | Beltz Thomas G | Truss system and components thereof |
| US5329652A (en) * | 1992-03-31 | 1994-07-19 | Krupp Industrietechnik Gesellschaft Mit Beschrankter Haftung | Deployable bridge and vehicle for laying the bridge |
| CN2377390Y (en) * | 1999-06-25 | 2000-05-10 | 石家庄铁道学院 | Full cone steel pin |
| CN104195934A (en) * | 2014-08-22 | 2014-12-10 | 中交公路规划设计院有限公司 | HBD60 type assembly road steel bridge and truss |
| CN204151700U (en) * | 2014-10-16 | 2015-02-11 | 中建交通建设集团有限公司 | A kind of reinforcement structure of military beam |
| US20150101261A1 (en) * | 2011-12-07 | 2015-04-16 | Cpi Technologies, Llc | Deployable truss with orthogonally-hinged primary chords |
| CN104894983A (en) * | 2015-05-14 | 2015-09-09 | 中国铁路总公司 | Recovery steel beam for high-speed railways |
| CN106592411A (en) * | 2017-02-20 | 2017-04-26 | 中国人民解放军63983部队 | Assembly-type bridge and erecting method |
-
2021
- 2021-11-12 CN CN202111337821.0A patent/CN113957813A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU633996A1 (en) * | 1976-04-16 | 1978-11-25 | Специальное Конструкторское Бюро Всесоюзного Научно-Исследовательского Института По Монтажным И Специальным Строительным Работам | Collapsible metal truss |
| US4546591A (en) * | 1983-11-23 | 1985-10-15 | Beltz Thomas G | Truss system and components thereof |
| US5329652A (en) * | 1992-03-31 | 1994-07-19 | Krupp Industrietechnik Gesellschaft Mit Beschrankter Haftung | Deployable bridge and vehicle for laying the bridge |
| CN2377390Y (en) * | 1999-06-25 | 2000-05-10 | 石家庄铁道学院 | Full cone steel pin |
| US20150101261A1 (en) * | 2011-12-07 | 2015-04-16 | Cpi Technologies, Llc | Deployable truss with orthogonally-hinged primary chords |
| CN104195934A (en) * | 2014-08-22 | 2014-12-10 | 中交公路规划设计院有限公司 | HBD60 type assembly road steel bridge and truss |
| CN204151700U (en) * | 2014-10-16 | 2015-02-11 | 中建交通建设集团有限公司 | A kind of reinforcement structure of military beam |
| CN104894983A (en) * | 2015-05-14 | 2015-09-09 | 中国铁路总公司 | Recovery steel beam for high-speed railways |
| CN106592411A (en) * | 2017-02-20 | 2017-04-26 | 中国人民解放军63983部队 | Assembly-type bridge and erecting method |
Non-Patent Citations (1)
| Title |
|---|
| 庞振基: "专业装备机械基础", 31 January 2020, 北京工业大学出版社, pages: 314 - 169 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241012A (en) * | 2023-02-01 | 2023-06-09 | 南通欧本建筑科技有限公司 | A bolt-assembled light truss with partial double-layer web |
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