River-crossing low-clearance steel trestle
By designing a low-clearance steel trench across the river, using I-shaped steel and Larsen steel sheet piles to form a river channel, the problem of insufficient low-clearance setting of the existing bridge in the cross-river area is solved, and the continuity of the bridge height and road slope and river flow are achieved. Flood drainage is smooth.
Patent Information
- Application Number
- CN202421073659.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing traffic relief construction bridges in the cross-river areas are limited by the ground and river surface elevations, resulting in insufficient low clearance settings, which cannot effectively ensure the continuous bridge height and road slope and river flood level requirements.
A low-clearance steel trest across the river was designed, adopting two rows of first steel pipe piles and cap beam structures. The main beam is composed of connected I-shaped steel. The main beam is set between the two rows of cap beams and passes through two rows of Lasson. Steel sheet piles form river channels, combining river support components and paving layers to ensure the continuity of bridge deck height and road slope and smooth river drainage.
It effectively avoids conflicts between the bridge deck height and the road height difference, ensures the safe driving of social vehicles and the smooth flow of rivers, and gives full play to the advantages of low clearance installation.
Smart Images
Figure CN222275229U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of roads and bridges, in particular to a low-clearance steel trestle bridge across a river. Background Art
[0002] With the rapid development of urban rail transit, more and more new urban rail lines are being built. During the construction of the underground section of the urban rail, the lines pass under existing buildings, rivers, bridges, etc., which brings huge challenges to the construction of new urban rail lines.
[0003] Especially along the urban rail lines involving areas with developed water systems, when the main roads cross rivers, the river crossing parts of the main roads are often accompanied by road bridges. Therefore, it is necessary to temporarily divert the river during the construction. After the river is temporarily diverted, it is necessary to set up a temporary traffic relief construction bridge to ensure the smooth flow of roads. Due to the limitations of the existing ground elevation, river water surface elevation and river support form, the requirements for cross-river bridges are relatively high.
[0004] At present, temporary bridges for traffic relief construction often use structures such as Bailey beams, military temporary beams, and prefabricated hollow slab beams. However, due to the influence of the ground and river surface elevation, the low clearance setting is still insufficient. In this regard, a low-clearance steel trestle across the river is proposed. Utility Model Content
[0005] In view of the above problems in the prior art, the utility model provides a low-clearance steel trestle across a river, which solves the problem that the existing temporary bridges for traffic relief construction are limited by the elevation of the ground and the river surface and the low-clearance setting is still insufficient.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0007] Provided is a river-spanning low-clearance steel trestle, comprising two rows of first steel pipe piles arranged on the ground surface, and cap beams installed on the first steel pipe piles, wherein the two rows of cap beams are arranged opposite to each other, a main beam is arranged between the two rows of cap beams, a paving layer is laid on the main beam, the main beam comprises a plurality of connected I-shaped steels, the plurality of connected I-shaped steels are arranged between the two rows of cap beams, a river channel is arranged between the two rows of first steel pipe piles, and Larsen steel sheet piles are arranged on both sides of the river channel.
[0008] The main beam of the utility model comprises a plurality of connected I-shaped steels, which are installed and fixed between two rows of cap beams to form a trestle, and two rows of Larsen steel sheet piles are arranged between the two rows of first steel pipe piles, and a river channel is formed by the two rows of Larsen steel sheet piles for the passage of the diverted river, thereby giving full play to the advantage of the low clearance erection of the steel trestle, avoiding too large height difference between the bridge deck height and the roads on both sides and the conflict between the trestle and the river enclosure structure, effectively controlling the continuity of the trestle height and the road slope and the height requirement of the river flood level, and better ensuring the safe driving of social vehicles and the smooth drainage of the river.
[0009] Furthermore, a slot is provided on the cap beam, and the slots on the two rows of cap beams are arranged opposite to each other. Both ends of the main beam are clamped on the slots. A plurality of through holes are opened at the bottom of the cap beam, and the top of the first steel pipe pile is embedded in the through hole and connected to the cap beam.
[0010] Furthermore, the main beam includes a plurality of connected I-beams, a plurality of anchor bolts are embedded in the cap beam, the top threaded sections of the anchor bolts are exposed in the slots, and the top threaded sections pass through the ends of the I-beams and are fixed to the I-beams by nuts.
[0011] Furthermore, connecting plates are respectively provided at both ends of the I-shaped steel, and the connecting plates on adjacent I-shaped steels are connected via channel steels.
[0012] Furthermore, the pavement layer includes a laying steel plate laid on the main beam, and a reinforced concrete layer is laid on the laying steel plate.
[0013] Furthermore, a plurality of through holes are evenly opened on the laying steel plate, bolts are passed through the through holes, and the bolts are left in the reinforced concrete layer.
[0014] Furthermore, a second steel pipe pile for supporting the main beam is arranged between the two rows of first steel pipe piles, a fixing groove is opened on the top of the second steel pipe pile, a double-piece I-beam is arranged in the fixing groove, the bottom of the double-piece I-beam is embedded in the fixing groove, and the top of the double-piece I-beam abuts the main beam.
[0015] Furthermore, a channel support assembly is arranged between the tops of the two rows of Larsen steel sheet piles. The channel support assembly includes steel corbels respectively installed on the inner sides of the two rows of Larsen steel sheet piles. Steel purlins are arranged on the two rows of steel corbels. Steel support is arranged between the two rows of steel purlins.
[0016] The utility model discloses a low-headroom steel trestle across a river, which has the following beneficial effects:
[0017] The main beam of the utility model comprises a plurality of connected I-shaped steels, which are installed and fixed between two rows of cap beams to form a trestle, and two rows of Larsen steel sheet piles are arranged between the two rows of first steel pipe piles, and a river channel is formed by the two rows of Larsen steel sheet piles for the passage of the diverted river, thereby giving full play to the advantage of the low clearance erection of the steel trestle, avoiding too large height difference between the bridge deck height and the roads on both sides and the conflict between the trestle and the river enclosure structure, effectively controlling the continuity of the trestle height and the road slope and the height requirement of the river flood level, and better ensuring the safe driving of social vehicles and the smooth drainage of the river. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The utility model is a front view structural schematic diagram of a river-spanning low-headroom steel trestle.
[0019] Figure 2 The utility model is a schematic diagram of the side structure of a low-headroom steel trestle across a river.
[0020] Figure 3 It is a structural schematic diagram of the first steel pipe pile and the cap beam of the utility model.
[0021] Figure 4 It is a structural schematic diagram of the main beam and pavement layer of the utility model.
[0022] Figure 5 It is a structural schematic diagram of the second steel pipe pile of the utility model.
[0023] Among them, 1. ground surface; 2. first steel pipe pile; 3. cap beam; 31. slot; 32. through hole; 33. anchor bolt; 4. main beam; 41. I-beam; 42. connecting plate; 43. channel steel; 5. pavement layer; 51. laying steel plate; 52. reinforced concrete layer; 53. through hole; 54. bolt; 6. Larsen steel sheet pile; 7. river channel; 8. second steel pipe pile; 81. fixing slot; 82. double I-beam; 91. steel corbel; 92. steel purlin; 93. steel support. DETAILED DESCRIPTION
[0024] The specific implementation modes of the present invention are described to facilitate the understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all utility model creations utilizing the concept of the present invention are protected.
[0025] Example 1
[0026] refer to Figure 1 , Figure 2 and Figure 5, which is a structural schematic diagram of a low-headroom steel trestle across a river in this embodiment, is intended to solve the problem that the existing temporary bridges for traffic relief construction are limited by the ground and river surface elevations and the low-headroom setting is still insufficient. The specific structure in this embodiment will be described in detail below.
[0027] A low-clearance steel trestle bridge across a river comprises two rows of first steel pipe piles 2 arranged in the ground surface 1, and cap beams 3 installed on the first steel pipe piles 2, wherein the two rows of cap beams 3 are arranged opposite to each other.
[0028] Specifically, a main beam 4 is arranged between two rows of cap beams 3, a paving layer 5 is laid on the main beam 4, the main beam 4 includes a plurality of connected I-shaped steels 41, and the plurality of connected I-shaped steels 41 are arranged between the two rows of cap beams 3, a river channel 7 is arranged between the two rows of first steel pipe piles 2, and Larsen steel sheet piles 6 are arranged on both sides of the river channel 7.
[0029] In this embodiment, two rows of first steel pipe piles 2 are buried in the ground 1. The number of first steel pipe piles 2 in each row can be set according to actual working conditions. Adjacent first steel pipe piles 2 are connected by channel steel welding. Two rows of cap beams 3 are respectively installed on the two rows of first steel pipe piles 2, and the two rows of cap beams 3 are arranged opposite to each other.
[0030] A main beam 4 is arranged between the two rows of cap beams 3. The main beam 4 includes a plurality of connected I-shaped steels 41. The plurality of connected I-shaped steels 41 are arranged between the two rows of cap beams 3 to form a steel trestle. At the same time, two rows of Larsen steel sheet piles 6 are buried between the two rows of first steel pipe piles 2, and the upper soil layer of the two rows of Larsen steel sheet piles 6 is excavated, so that a river channel 7 is formed through the two rows of Larsen steel sheet piles 6 for the passage of the diverted river, thereby giving full play to the advantage of the low clearance erection of the steel trestle, avoiding the large height difference between the bridge deck height and the roads on both sides and the conflict between the trestle and the river retaining structure, effectively controlling the continuity of the trestle height and the road slope and the height requirement of the river flood level, and better ensuring the safe driving of social vehicles and the smooth drainage of the river.
[0031] Specifically, a slot 31 is provided on the cap beam 3, and the slots 31 on the two rows of cap beams 3 are arranged opposite to each other. Both ends of the main beam 4 are clamped on the slots 31, and a plurality of through holes 32 are opened at the bottom of the cap beam 3. The top of the first steel pipe pile 2 is embedded in the through hole 32 and connected to the cap beam 3.
[0032] In this embodiment, the cross section of the cap beam 3 is L-shaped and is cast with reinforced concrete. A slot 31 is provided on the cap beam 3. Two rows of cap beams 3 are arranged opposite to each other, so that the slots 31 are opposite to each other to place a plurality of connected I-shaped steels 41.
[0033] The bottom of the cap beam 3 is provided with through holes whose number matches the number of the first steel pipe piles 2 . The top of the first steel pipe pile 2 is anchored into the through hole 32 of the cap beam 3 , and concrete is poured to connect the first steel pipe pile 2 with the cap beam 3 .
[0034] Specifically, a second steel pipe pile 8 for supporting the main beam 4 is arranged between the two rows of first steel pipe piles 2, a fixing groove 81 is opened on the top of the second steel pipe pile 8, a double I-beam 82 is arranged in the fixing groove 81, the bottom of the double I-beam 82 is embedded in the fixing groove 81, and the top of the double I-beam 82 abuts the main beam 4.
[0035] In this embodiment, a second steel pipe pile 8 is arranged between the two rows of first steel pipe piles 2. The second steel pipe pile 8 is used to support the main beam 4 and decompose the pressure on the main beam 4. The second steel pipe pile 8 is located in the middle position between the two rows of first steel pipe piles 2.
[0036] A fixing groove 81 is opened at the top of the second steel pipe pile 8, and a double I-beam 82 is arranged in the fixing groove 81. The double I-beam 82 is formed by two I-beams connected by a fixing plate. The bottom of the double I-beam 82 is embedded in the fixing groove 81 and can be fixed by pouring reinforced concrete. The top of the double I-beam 82 abuts the main beam 4, and can be welded and connected while abutting the main beam 4.
[0037] Specifically, a river channel support assembly is arranged between the tops of the two rows of Larsen steel sheet piles 6, and the river channel support assembly includes steel corbels 91 respectively installed on the inner sides of the two rows of Larsen steel sheet piles 6, steel purlins 92 are arranged on the two rows of steel corbels 91, and steel support 93 is arranged between the two rows of steel purlins 92.
[0038] In this embodiment, a river channel support assembly is arranged between the tops of the two rows of Larsen steel sheet piles 6, which is used to improve the strength of the two rows of Larsen steel sheet piles 6 and prevent the two rows of Larsen steel sheet piles 6 from being deformed in the later stage. The river channel support assembly includes a steel corbel 91 installed on the inner side of the two rows of Larsen steel sheet piles 6, and a steel purlin 92 is arranged between the two rows of steel corbels 91. The two rows of steel corbels 91 are used to support the steel purlin 92, and a steel support 93 is arranged between the two rows of steel purlins 92. The steel support 93 adopts existing square steel or I-beam, and supports the two rows of Larsen steel sheet piles 6 through the steel support 93, so as to achieve the effect of improving the strength, and the steel support 93 and the steel purlin 92 can be connected by welding, and the gap between the steel purlin 92 and the Larsen steel sheet piles 6 can be filled with concrete.
[0039] Furthermore, the spacing H between the lower surface of the I-shaped steel 41 on the main beam 4 and the steel purlin 92 is less than or equal to 480 mm to meet the requirements of the river flood level.
[0040] Example 2
[0041] refer to Figure 2-Figure 4, which is a structural schematic diagram of a low-headroom steel trestle across a river in this embodiment, is intended to solve the problem that the existing temporary bridges for traffic relief construction are limited by the elevation of the ground and the river surface and the low-headroom setting is still insufficient. Based on Example 1, this embodiment provides a further solution for the main beam 4. The specific structure of the main beam 4 in this embodiment will be described in detail below.
[0042] The main beam 4 includes a plurality of connected I-shaped steels 41. A plurality of anchor bolts 33 are embedded in the cap beam 3. The top threaded section of the anchor bolts 33 is exposed at the slot 31. The top threaded section passes through the end of the I-shaped steel 41 and is fixed by a nut.
[0043] Specifically, connecting plates 42 are respectively provided at both ends of the I-shaped steel 41 , and the connecting plates 42 on adjacent I-shaped steels 41 are connected via channel steels 43 .
[0044] In this embodiment, the main beam 4 includes a plurality of connected I-beams 41. When the I-beams 41 are installed between two rows of cap beams 3, the I-beams 41 have anchor bolts 33 embedded in advance when the cap beams 3 are cast at the installation position of the cap beams 3. The top threaded section of the anchor bolts 33 is exposed at the slot 31 at the installation position of the I-beam 41 at the cap beam 3.
[0045] Therefore, when the end of the I-beam 41 is placed on the slot 31 of the cap beam 3, the top threaded section of the anchor bolt 33 passes through the through hole reserved at the end of the I-beam 41, and the I-beam 41 is fixed to the slot 31 of the cap beam 3 by the nut.
[0046] At the same time, connecting plates 42 are respectively provided on both sides of the ends of the I-shaped steel 41. Through holes are preset on the connecting plates 42, and bolts are passed through the through holes. The connecting plates 42 on adjacent I-shaped steels 41 are connected by bolts passing through the channel steels 43 and cooperating with nuts to connect the adjacent I-shaped steels 41.
[0047] Specifically, the pavement layer 5 includes a laying steel plate 51 laid on the main beam 4, a reinforced concrete layer 52 is laid on the laying steel plate 51, a plurality of through holes 53 are evenly opened on the laying steel plate 51, bolts 54 are passed through the through holes 53, and the bolts 54 are retained in the reinforced concrete layer 52.
[0048] In this embodiment, a paving layer 5 is provided on the main beam 4 , and the paving layer 5 includes a paving steel plate 51 laid on the main beam 4 , and a reinforced concrete layer 52 is laid on the paving steel plate 51 to form a paved bridge deck.
[0049] At the same time, a number of through holes 53 are evenly opened on the laying steel plate 51. On the one hand, the laying steel plate 51 and the I-beam 41 on the main beam 4 can be connected by welding through the through holes 53. On the other hand, bolts 54 are fixed in the through holes 53 by welding, and the upper ends of the bolts 54 are left in the reinforced concrete layer 52, so that the tightness of the connection between the laying steel plate 51 and the reinforced concrete layer 52 is improved through the bolts 54, and anti-collision guardrails are cast on both sides of the upper surface of the reinforced concrete layer 52.
[0050] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.
Claims
1. A low-headroom steel trestle across a river, characterized by: It comprises two rows of first steel pipe piles (2) arranged in the ground surface (1), and cap beams (3) installed on the first steel pipe piles (2), wherein the two rows of cap beams (3) are arranged opposite to each other; A main beam (4) is arranged between the two rows of cap beams (3), and a paving layer (5) is laid on the main beam (4); the main beam (4) comprises a plurality of connected I-shaped steels (41), and the plurality of connected I-shaped steels (41) are arranged between the two rows of cap beams (3); A river channel (7) is arranged between two rows of the first steel pipe piles (2), and Larsen steel sheet piles (6) are respectively arranged on both sides of the river channel (7).
2. The low-headroom steel trestle across a river according to claim 1 is characterized in that: The cap beam (3) is provided with a clamping groove (31), the clamping grooves (31) on the two rows of cap beams (3) are arranged opposite to each other, and both ends of the main beam (4) are clamped on the clamping grooves (31); A plurality of through holes (32) are provided at the bottom of the cap beam (3), and the top of the first steel pipe pile (2) is embedded in the through hole (32) and connected to the cap beam (3).
3. The low-headroom steel trestle across the river according to claim 2 is characterized in that: A plurality of anchor bolts (33) are pre-buried in the cap beam (3), the top threaded sections of the anchor bolts (33) are exposed at the slots (31), and the top threaded sections pass through the ends of the I-shaped steel (41) and are fixed to the I-shaped steel (41) by nuts.
4. The low-headroom steel trestle across the river according to claim 3 is characterized by: Connecting plates (42) are respectively provided at both ends of the I-shaped steel (41), and the connecting plates (42) on adjacent I-shaped steels (41) are connected via channel steels (43).
5. The low-headroom steel trestle across a river according to claim 1 is characterized in that: The paving layer (5) comprises a paving steel plate (51) paved on the main beam (4), and a reinforced concrete layer (52) is paved on the paving steel plate (51).
6. The low-headroom steel trestle across a river according to claim 5 is characterized in that: A plurality of through holes (53) are evenly formed on the laying steel plate (51), bolts (54) are inserted into the through holes (53), and the bolts (54) are left in the reinforced concrete layer (52).
7. The low-headroom steel trestle across a river according to claim 1 is characterized in that: A second steel pipe pile (8) for supporting the main beam (4) is arranged between the two rows of the first steel pipe piles (2); a fixing groove (81) is provided on the top of the second steel pipe pile (8); a double-jointed I-beam (82) is arranged in the fixing groove (81); the bottom of the double-jointed I-beam (82) is embedded in the fixing groove (81), and the top of the double-jointed I-beam (82) abuts against the main beam (4).
8. The low-headroom steel trestle across a river according to claim 1 is characterized by: A river channel support assembly is arranged between the tops of the two rows of Larsen steel sheet piles (6), and the river channel support assembly comprises steel brackets (91) respectively installed on the inner sides of the two rows of Larsen steel sheet piles (6) relative to each other, steel purlins (92) are arranged on the two rows of steel brackets (91), and a steel support (93) is arranged between the two rows of steel purlins (92).