A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure

Abstract

A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure, comprising an interface end of a pedestrian overpass or corridor with a surface building surface layer and its underlying bridge structure, an interface end of the existing structure, and a to-be-connected gap reserved between the two interface ends. The bridge structure extends a length more than the building surface layer to form a bridge structure table surface, and forms a receiving long groove along the to-be-connected gap with the end surface of the building surface layer. A double-ear plate bottom plate is fixed on the bridge structure table surface to connect double-ear plates; multiple connecting steel plates are arranged along the to-be-connected gap in a through-length manner, and adjacent connecting steel plates are connected into a whole through thin connecting steel sheets; one end of the connecting steel plate is placed on the end surface layer of the existing structure interface, and the other end is connected with a single-ear plate and hinged to the double-ear plate; a single-ear plate rotation activity gap is reserved between the side surface of the double-ear plate and the end surface of the building surface layer and filled with a deformable elastic filling material; the present invention can balance the relative vertical deformation or uneven deformation between the interface end of the pedestrian overpass or corridor and the interface end of the existing structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of municipal auxiliary facility engineering, and specifically provides a deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure. Background Art

[0002] In the construction of expansion joints in the prior art, according to the "Urban Road - Pedestrian Overpass" Atlas 10MR604 - 1, the expansion joint is filled with a chloroprene rubber compression sealing strip. This method is mainly for the connection between the main beam of the overpass and the ladder and ramp, and the relative deformation between the two is small.

[0003] Another one is according to the "Deformation Joint Building Structure" Atlas 14J936. The deformation joint structures listed therein are for the deformation joints between structures, with relatively small relative deformation and not suitable for pedestrian passage.

[0004] Currently, in newly built urban corridors, there are many that need to be connected to existing buildings. The connection section structure of the overpass often adopts a cantilever structure to avoid the pedestrian passage, pipelines, entrances and exits below. Under the action of pedestrian loads, the cantilever end may have a vertical relative deformation relative to the existing building. When the pedestrian bridge is curved, there may also be an uneven vertical relative deformation. If the expansion joint method in the atlas is adopted, when there is a vertical relative deformation, people may stumble and fall when passing by, causing inconvenience to pedestrian passage. Therefore, it is urgently needed to be solved.

[0005] Contents of the Invention

[0006] The present invention provides a deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure, aiming to solve the technical problems of the tidal relative deformation between the connection section structure of the overpass or corridor and the existing structure under the influence of uneven distributed loads of the crowd, and the uneven vertical relative deformation that may occur when the pedestrian bridge is curved, especially the technical problems of how to convert the vertical relative deformation into a gentle slope and balance the uneven deformation.

[0007] The technical solution of the present invention is as follows:

[0008] A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure includes an interface end of the pedestrian overpass or corridor and an interface end of the existing structure. The interface end of the pedestrian overpass or corridor includes a building surface layer on the surface and a bridge structure below it; a to - be - connected gap is reserved between the interface end of the pedestrian overpass or corridor and the interface end of the existing structure; along the width direction of the to - be - connected gap at the to - be - connected gap, the bridge structure below extends a length more than the building surface layer on the surface, and its upper surface forms a bridge structure table top. The end surface of the bridge structure table top and the building surface layer form a receiving long groove, and the receiving long groove is arranged longitudinally along the length direction of the to - be - connected gap;

[0009] Fix a horizontally arranged double-ear plate bottom plate on the tabletop of the bridge structure, and connect the bottom of the vertically upright double-ear plate to the double-ear plate bottom plate.

[0010] The connecting steel plates are arranged longitudinally along the length direction of the to-be-connected gap and arranged side by side in multiple pieces. At least two thin connecting steel sheets are welded between adjacent connecting steel plates to connect the multiple connecting steel plates into an integral body. In the width direction of the to-be-connected gap, one end of the connecting steel plate is a lapping end and the other end is a hinged end. The lapping end is lapped on the end face layer of the existing structure interface, and the bottom of the hinged end is fixedly connected to a vertically upright single-ear plate corresponding to the insertion gap between the double-ear plates. At least two single-ear plates are provided on each connecting steel plate, and pin holes are reserved on the single-ear plates. The axial direction of the pin holes is arranged along the length direction of the to-be-connected gap. The double-ear plates are provided with pin holes corresponding to the single-ear plates.

[0011] A single-ear plate rotation movement gap is reserved between the side surface of the double-ear plate and the end face of the building surface layer, and a deformable elastic filling material is filled in the ear plate rotation movement gap.

[0012] The single-ear plate on the connecting steel plate is inserted into the insertion gap between the double-ear plates, and the single-ear plate and the double-ear plate are hinged and connected by passing a pin through the pin hole. The single-ear plate and the double-ear plate are connected in a rotatable connection manner.

[0013] The lapping end of the connecting steel plate is provided with a downward slope, and the slope is 1°-3°.

[0014] When vertical deformation occurs between the interface end of the pedestrian overpass or corridor and the interface end of the existing structure, the connecting steel plate rotates around the pin, and the other end of the connecting steel plate is lapped on the existing structure surface layer under the action of gravity and closely adheres, converting the vertical relative deformation into the gentle slope of the connecting steel plate.

[0015] When the corridor is a curved corridor and uneven vertical deformation occurs between the curved corridor and the existing structure, the rotation angles of the connecting steel plates are different, and each balances the relative vertical deformation at its position, and is kept connected by the thin connecting steel sheets arranged between the connecting steel plates; balance the relative deformation between the connecting steel plates, and convert the uneven vertical deformation of the curved corridor into the gentle slopes of the connecting steel plates.

[0016] The hinged end of the connecting steel plate contacts the building surface layer through the deformable elastic filling material, and the top surfaces of the building surface layer, the deformable elastic filling material and the hinged end of the connecting steel plate form a plane or a slope.

[0017] The width of the to-be-connected gap 3 is selected to be 100 mm - 500 mm.

[0018] The width of a single piece of the connecting steel plate is 200 - 600 mm.

[0019] The deformable elastic filling material is rubber.

[0020] The two thin connecting steel sheets are arranged at intervals.

[0021] The bottom plate of the double-ear plate is welded to the bridge structure of the steel structure, or is connected to the bridge structure of the concrete structure through embedded anchor bars and anchor bolts.

[0022] A deformation coordination joint is reserved between adjacent connecting steel plates.

[0023] The present invention provides a deformation joint structure form for the tidal relative deformation between the interface end of a pedestrian overpass (corridor) and the existing structure affected by the uneven distributed load of the crowd. It not only has the functions of a conventional deformation joint, but also can coordinate the uneven vertical deformation between the end of the overpass and the existing building end. When the overpass (corridor) and the existing structure generate relative deformation, this kind of deformation joint can convert the vertical relative deformation into a gentler slope of the connecting steel plate by the rotation of the connecting steel plate around the pin shaft, which is convenient for people to pass through; for the possible uneven vertical deformation of a curved overpass (or curved corridor), the uneven vertical deformation is balanced by the multiple small deformations generated by the different rotation angles of each connecting steel plate around the pin shaft. It avoids the bumps and falls caused by relative deformation. This kind of deformation joint can not only meet the water-stop and fire-stop requirements of a conventional deformation joint, but also balance the vertical and oblique relative deformations at both ends of the structure.

[0024] Invention Effects

[0025] The present invention is suitable for the connection between an overpass or a corridor and an existing structure, and can well balance the relative vertical deformation between the end of the overpass bridge deck and the end of the existing structure. This deformation joint converts the vertical relative deformation into a gentler slope of the connecting steel plate through the connecting steel plate that freely rotates around the pin shaft, which is convenient for people to pass through and can avoid the occurrence of bumps and falls; through the multiple small deformations between each connecting steel plate, the uneven deformation is balanced by the different rotation angles of each connecting steel plate around the pin shaft. By adding thin connecting steel sheets between the connecting steel plates, the relative deformation between the connecting steel plates is balanced, ensuring that the whole does not move out of place, and converting the uneven vertical deformation into a gentler slope of each connecting steel plate. The connecting steel plate can be conveniently replaced after reaching the service life. Description of the Drawings

[0026] Figure 1 It is a schematic plan view of the connection structure of multiple connecting steel plates of the present invention.

[0027] Figure 2It is a schematic side view of the connecting steel plate and single ear plate of the present invention.

[0028] Figure 3 It is a schematic plan view of the distribution of double ear plates of the present invention.

[0029] Figure 4 It is a schematic view of the overall structure of the present invention.

[0030] Figure 5 It is a schematic side sectional view of the overall structure of the present invention.

[0031] Figure 6 It is a schematic view of the slope structure formed by the connecting steel plate after the deformation joint adjusts the deformation of the present invention.

[0032] Figure 7 It is a schematic front view of the single and double ear plate connection structure of the present invention.

[0033] Figure 8 It is a schematic side view of the single and double ear plate connection structure of the present invention.

[0034] Explanation of the drawing reference numbers:

[0035] Interface end 1 of the pedestrian overpass or corridor, building surface layer 11, end face 111, bridge structure 12, bridge structure table top 121, accommodating long groove 13, ear plate rotation activity gap 132; existing structure interface end 2; to-be-connected gap 3; double ear plates 4, double ear plate bottom plate 41; connecting steel plate 5, thin connecting steel sheet 51, overlapping end 52, hinged end 53, single ear plate 54, pin shaft 55, pin shaft hole 551, deformation coordination joint 56; water stop 6; fire stop 7; drainage ditch 8; railing 9; ground sill 10; A length direction of the to-be-connected gap; B width direction of the to-be-connected gap. Detailed implementation manners

[0036] The following will describe in detail the specific implementation manners of the present invention with reference to the drawings.

[0037] Refer to Figure 4 、 5 As shown, a deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure of the present invention includes an interface end 1 of the pedestrian overpass or corridor and an existing structure interface end 2. The interface end 1 of the pedestrian overpass or corridor includes a building surface layer 11 on the surface and a bridge structure 12 below it; a to-be-connected gap 3 is reserved between the interface end 1 of the pedestrian overpass or corridor and the existing structure interface end 2; along the width direction of the to-be-connected gap 3 at the to-be-connected gap 3, the lower bridge structure 12 extends a length more than the upper building surface layer 11 so that its upper surface forms a bridge structure table top 121, and the bridge structure table top 121 and the end face 111 of the building surface layer 11 form an accommodating long groove 13. Refer to Figure 3As shown, the accommodating long groove 13 is provided along the entire length of the to-be-connected gap 3 in the length direction thereof;

[0038] A double-ear plate bottom plate 41 arranged horizontally is fixed on the tabletop 121 of the bridge structure. Refer to Figure 7 As shown, the bottom of the double-ear plate 4 arranged vertically upward is connected to the double-ear plate bottom plate 41;

[0039] Refer to Figure 1 、 Figure 4 、 Figure 5 As shown, the connecting steel plates 5 are arranged along the entire length of the to-be-connected gap 3 in the length direction thereof and multiple pieces are arranged side by side. At least two thin connecting steel sheets 51 are welded between adjacent connecting steel plates 5 to connect multiple pieces of the connecting steel plates 5 into an integral body; in the width direction of the to-be-connected gap 3, one end of the connecting steel plate is a lapping end 52 and the other end is a hinged end 53. The lapping end is lapped on the surface layer of the existing structure interface end 2. Refer to Figure 1 、 2 As shown, a single-ear plate 54 arranged vertically downward is fixedly connected to the bottom of the hinged end corresponding to the insertion gap between the double-ear plates 4; at least two single-ear plates are provided on each connecting steel plate, and a pin shaft hole 551 is reserved on the single-ear plate. The axial direction of the pin shaft hole 551 is arranged along the length direction of the to-be-connected gap 3; the double-ear plates 4 are provided with pin shaft holes corresponding to the single-ear plates;

[0040] Refer to Figure 3 、 5 As shown, a single-ear plate rotation and movement gap 132 is reserved between the side surface of the double-ear plate and the end surface 111 of the building surface layer 11, and a deformable elastic filling material is filled in the ear plate rotation and movement gap;

[0041] Refer to Figure 7 As shown, the single-ear plate on the connecting steel plate is inserted into the insertion gap between the double-ear plates, and the single-ear plate and the double-ear plate are connected by hinging through the pin shaft 55 penetrating into the pin shaft hole. The single-ear plate and the double-ear plate are connected in a rotatable connection manner.

[0042] Refer to Figure 8 As shown, the lapping end 52 of the connecting steel plate is provided with a downward slope, and the slope is 1° - 3°.

[0043] Refer to Figure 6 As shown, when vertical deformation occurs between the interface end 1 of the pedestrian overpass or corridor and the existing structure interface end 2, the connecting steel plate 5 rotates around the pin shaft 55, and the other end of the connecting steel plate is lapped on the existing structure surface layer tightly under the action of gravity, converting the vertical relative deformation into a gentle slope of the connecting steel plate.

[0044] When the connecting corridor is a curved connecting corridor and uneven vertical deformation occurs between the curved connecting corridor and the existing structure 2, the angles of rotation of the connecting steel plates 5 around the pin shafts 55 are different, and each balances the relative vertical deformation at its position. The thin connecting steel sheets arranged between the connecting steel plates keep the connection; the relative deformation between the connecting steel plates is balanced, and the uneven vertical deformation of the curved connecting corridor is converted into the gentle slope of each connecting steel plate.

[0045] The hinged end 53 of the connecting steel plate contacts the building surface layer 11 through the deformable elastic filling material, and the top surfaces of the building surface layer 11, the deformable elastic filling material and the hinged end of the connecting steel plate form a plane or a slope.

[0046] The deformation joint further includes a water stop 6, a fire stop 7, and a drainage ditch 8, which are constructed by conventional methods.

[0047] According to the possible vertical relative deformation value, the width of the to-be-connected gap 3 is selected to be 100 mm - 500 mm.

[0048] The width of a single connecting steel plate is 200 - 600 mm.

[0049] The deformable elastic filling material is preferably rubber.

[0050] The two thin connecting steel sheets are arranged at intervals.

[0051] The double-ear plate bottom plate is welded to the bridge body structure of the steel structure, or is connected to the bridge body structure of the concrete structure through embedded anchor bars and anchor bolts.

[0052] A deformation coordination joint 56 is reserved between adjacent connecting steel plates.

[0053] The following further describes the present invention:

[0054] The present invention mainly consists of a double-ear plate fixed on the bridge body structure, a single-ear plate fixed on the connecting steel plate, a connecting steel plate, and a pin shaft. A water stop, a fire stop, and a drainage ditch can be set between the bridge deck and the existing structure as appropriate; the construction methods of the water stop, the fire stop, and the drainage ditch for these structures are the same as those of conventional deformation joints, and the connection between the two ends of the deformation joint and the connecting steel plate is the same as the construction methods of these structures for conventional deformation joints.

[0055] According to the possible vertical relative deformation value, the width of the to-be-connected gap 3 can be 100 mm - 500 mm. The width of a single connecting steel plate is about 200 - 600 mm, and the length is set according to the width of the gap. The lap length is generally 0.5 times the width of the gap. After the connecting steel plate reaches the service life, a single connecting steel plate can be replaced by removing the pin shaft, which is convenient and fast.

[0056] The ear plates can be reliably connected to the bridge deck through the base, not limited to welding (for steel bridges) and anchor bar connection (for reinforced concrete bridges). Elastic filling materials are arranged on the sides of the double ear plates, not limited to rubber and sealant, which are connected to the bridge deck surface layer.

[0057] The single ear plate on the connecting steel plate is inserted into the double ear plate and fixed by a pin shaft. The other end of the connecting steel plate is placed on the surface layer of the existing structure, and the installation is completed. A water stop belt, a fire stop belt and a drainage ditch can be arranged between the bridge deck and the existing structure as required.

[0058] When vertical deformation occurs between the overpass structure and the existing structure, the hinged end of the connecting steel plate rotates around the pin shaft, and the other lapped end is pressed against the surface layer of the existing structure under the action of gravity, converting the vertical relative deformation into the gentle slope of the connecting steel plate, which is convenient for people to pass. The reserved deformation coordination joint 56 between adjacent connecting steel plates can adjust the small deformations between the connecting steel plates. Since the rotation angles of the connecting steel plates around the pin shaft may be different, the deformation coordination joint is used to balance their uneven deformations. The thin connecting steel sheets added between the connecting steel plates balance the relative deformations between the connecting steel plates and ensure that there is no dislocation in the whole. The deformable elastic filling material is preferably rubber. When the hinged end of the connecting steel plate rotates around the pin shaft, due to the deformable and elastic properties of the rubber, it neither hinders the rotation of the hinged end of the connecting steel plate nor can always keep the top surfaces of the building surface layer 11, the deformable elastic filling material and the hinged end of the connecting steel plate form a plane or a slope

[0059] A curved overpass or a curved corridor refers to an overpass or a corridor whose center line of the bridge deck plane is not a straight line.

[0060] Embodiment

[0061] Project name: Construction of a certain city corridor project overview: The north side of the aerial corridor is connected to the existing structure, the Urban Shopping Park, and the south side is connected to the existing structure, the Shopping Center. The corridor line is an S-shaped curve, with a total of two structural columns, and the corridor is made of steel structure. The total length of the corridor is about 70m.

[0062] Deformation joint design requirements: Since the bridge type is an S-shaped curve and is connected to the Urban Shopping Park end by a cantilever (about 15m), the bridge body has tidal deformation and torsion under the action of the crowd load. The deformation joint needs to not only coordinate the vertical relative deformation between the Urban Shopping Park end and the bridge body, but also balance the relative torsional deformation between the two.

[0063] Deformation joint design parameters: Through calculation and analysis, the maximum relative vertical deformation is 20 mm, and the maximum torsional deformation on both sides of the bridge end is 15 mm (the vertical deformation difference between the west and east sides of the bridge end). According to the 1 / 20 slope, the width of the deformation joint should be greater than 400 mm. The actual designed joint width is 500 mm, and each side of the bridge body and the shopping park side overlaps by 250 mm. The width of the bridge body is 3.6 m, the width of each connecting steel plate is 290 mm, the gap between the connecting steel plates is 10 mm, a total of 12 connecting steel plates are set, the thickness of the connecting steel plates is 12 mm, and Q235 steel is used. Two thin connecting steel sheets for coordinating deformation are set between the connecting steel plates. Each sheet is 30 mm long and 5 mm thick, and is welded under the connecting steel plates. Two single ear plates are welded to each connecting steel plate at the bridge end. The thickness of the ear plates is 12 mm and the height is 80 mm. Double ear plates are set at the corresponding single ear plate positions at the bridge end in the form of welded steel plates. The height of the double ear plates is 80 mm, the single sheet thickness is 10 mm, and the gap between the two ear plates is 14 mm, with a certain allowable error. Construction steps: Assemble the connecting steel plates, connecting steel sheets and single ear plates under the connecting steel plates in the factory. Lay out the wire according to the measured position of the single ear plates in the factory on the on-site steel bridge and weld the double ear plates. Insert the single ear plates into the double ear plates on-site, keep the position by an electric hoist and insert the pin shafts one by one to lock. Place the other end of the connecting steel plate on the reserved interface of the shopping park. Set a 20 mm gap between the building paving on the bridge body side and the deformation joint and fill it with elastic material neoprene. The measured overlapping length at the shopping park end is ≥250 mm, and the overall deformation joint connecting steel plate can rotate around the pin shaft to complete the installation.

Claims

1. A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure, comprising an interface end of the pedestrian overpass or corridor and an interface end of the existing structure. The interface end of the pedestrian overpass or corridor includes a building surface layer on the surface and a bridge structure below it; characterized in that, A receiving gap (3) is reserved between the interface end (1) of the pedestrian overpass or corridor and the interface end (2) of the existing structure; along the width direction of the receiving gap (3) at the receiving gap (3), the lower bridge structure (12) extends a length more than the surface building surface layer (11) so that its upper surface forms a bridge structure table surface (121), and the bridge structure table surface (121) and the end surface (111) of the building surface layer (11) form a receiving long groove (13), and the receiving long groove (13) is arranged longitudinally along the length direction of the receiving gap (3). A double-ear plate bottom plate (41) arranged horizontally is fixed on the bridge structure table surface (121), and the bottom of the double-ear plate (4) arranged vertically upright is connected to the double-ear plate bottom plate (41). The connecting steel plates (5) are arranged longitudinally along the length direction of the receiving gap (3) and are arranged side by side in multiple pieces, and at least two thin connecting steel sheets (51) are welded between adjacent connecting steel plates to connect the multiple connecting steel plates (5) into an integrated body; in the width direction of the receiving gap (3), one end of the connecting steel plate is a lapping end (52) and the other end is a hinged end (53), the lapping end is lapped on the surface layer of the existing structure interface end (2), and the bottom of the hinged end is fixedly connected to a single-ear plate (54) arranged vertically upright corresponding to the insertion gap between the double-ear plates (4); at least two single-ear plates are arranged on each connecting steel plate, a pin shaft hole (551) is reserved on the single-ear plate, and the axial direction of the pin shaft hole (551) is arranged along the length direction of the receiving gap (3); the double-ear plates (4) are provided with pin shaft holes corresponding to the single-ear plates. A single-ear plate rotation activity gap (132) is reserved between the side surface of the double-ear plate and the end surface (111) of the building surface layer (11), and a deformable elastic filling material is filled in the ear plate rotation activity gap. The single-ear plate on the connecting steel plate is inserted into the insertion gap between the double-ear plates, and the single-ear plate and the double-ear plate are hinged and connected by passing a pin shaft (55) through the pin shaft hole, and the single-ear plate and the double-ear plate are connected in a rotatable connection manner.

2. A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure as claimed in claim 1, wherein The lapping end (52) of the connecting steel plate is provided with a downward slope, and the slope is 1°-3°.

3. A deformation joint applicable to the connection between a pedestrian overpass or a corridor and an existing structure as claimed in claim 1, wherein When vertical deformation occurs between the interface end (1) of the pedestrian overpass or corridor and the interface end (2) of the existing structure, the connecting steel plate (5) rotates around the pin shaft (55), and the other end of the connecting steel plate is lapped on the existing structure surface layer tightly under the action of gravity, and the vertical relative deformation is converted into a gentle slope of the connecting steel plate.

4. A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure as claimed in claim 1, characterized in that When the connecting corridor is a curved connecting corridor and uneven vertical deformation occurs between the curved connecting corridor and the existing structure (2), the rotation angles of the connecting steel plates (5) around the pin shafts (55) are different, and each balances the relative vertical deformation at its location, and the thin connecting steel sheets arranged between the connecting steel plates are used to maintain the connection; the relative deformation between the connecting steel plates is balanced, and the uneven vertical deformation of the curved connecting corridor is converted into a gentle slope of each connecting steel plate.

5. A deformation joint applicable to the connection between a pedestrian overpass or a corridor and an existing structure as claimed in claim 1, characterized in that, The articulated end of the connecting steel plate contacts the building surface layer (11) through the deformable elastic filling material, and the building surface layer (11), the deformable elastic filling material and the top surface of the articulated end of the connecting steel plate form a plane or a slope.

6. A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure as claimed in claim 1, characterized in that, The width of the to-be-connected gap (3) is selected to be 100 mm - 500 mm; the width of a single connecting steel plate is 200 - 600 mm.

7. A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure as claimed in claim 1, characterized in that The deformable elastic filling material is rubber.

8. A deformation joint applicable to the connection between a pedestrian overpass or a corridor and an existing structure as claimed in claim 1, characterized in that, The two thin connecting steel sheets are arranged at intervals.

9. A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure as claimed in claim 1, characterized in that, The double-ear plate bottom plate is welded to the bridge structure of the steel structure, or is connected to the bridge structure of the concrete structure through embedded anchor bars and anchor bolts.

10. A deformation joint applicable to the connection between a pedestrian overpass or corridor and an existing structure as claimed in claim 1, characterized in that A deformation coordination joint (56) is reserved between adjacent connecting steel plates.

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