Rapid bridge incremental launching construction system
Through the bridge rapid push-up construction system, the sliding push-up of the bridge components is achieved using fixed pier and slide components, which solves the hidden dangers of temporary land acquisition and railway safety operation in rotary construction, reduces construction costs and risks, and improves construction efficiency and security.
Patent Information
- Application Number
- CN202411453483.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-01-14
AI Technical Summary
The existing rotary construction methods require temporary land acquisition or demolition during the construction of upper-span railway bridges, resulting in high costs and pose hidden dangers to railway safety operation. The construction process is complicated, which increases the difficulty of implementation.
The bridge rapid push-up construction system is adopted to realize the sliding push-up construction of the bridge assembly through the first fixed pier, the second fixed pier, the multiple third fixed pier, the bridge assembly, the slide assembly and the traction jack, and avoid temporary land acquisition and railway Equipment relocation reduces construction costs and safety risks.
It reduces construction costs and monitoring pressure of railway equipment management units, improves construction safety and reliability, reduces the impact on existing railways, and increases the movement speed of concrete box girders.
Smart Images
Figure CN119308232A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bridge engineering, and in particular to a rapid bridge jacking construction system. Background Art
[0002] With the development of my country's economy and the continuous improvement of urbanization, in order to improve traffic efficiency, more and more municipal bridges that intersect with railways are being built. As the main artery of the national economy, railway safety involves public safety and is related to the safety of people's lives and property. The construction safety requirements for bridges crossing existing railways are becoming more and more stringent.
[0003] In the related technology, the construction of bridges over railways adopts a rotation construction plan. However, the rotation construction has the following problems: first, the bridge before rotation is parallel to the existing railway, and the construction scope exceeds the design red line, which requires temporary land acquisition or demolition. Especially when it involves crossing the existing line on the city road, temporary land acquisition or demolition of surrounding buildings is extremely difficult and costly. In addition, the amount of railway equipment relocation caused by the rotation construction process is large, which increases the difficulty of implementing the plan. Secondly, during the construction period when the bridge before rotation is parallel to the existing railway, it is close to the existing line, which poses a hidden danger to the safe operation of the existing line. The cooperation time of the railway equipment management unit is long and the cooperation cost is high. Summary of the invention
[0004] In order to solve the above technical problems, the present application provides a bridge rapid jacking construction system for reducing construction costs.
[0005] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:
[0006] The embodiment of the present application provides a bridge rapid jacking construction system, including: a first fixed pier, a second fixed pier, a plurality of third fixed piers, a bridge assembly, a slideway assembly and a traction jack. The first fixed pier is arranged on one side of the railway. The second fixed pier is arranged on the other side of the railway. A plurality of third fixed piers are arranged at intervals on the side of the second fixed pier away from the railway. Before the jacking construction, the bridge assembly can be slidably arranged on the second fixed pier and the third fixed pier, and the bridge assembly includes a front guide beam, a concrete box beam and a rear guide beam connected in sequence. The slideway assembly includes an upper slideway and a lower slideway, and the upper slideway cooperates with the lower slideway. The upper slideway is arranged on the side of the concrete box beam facing the second fixed pier and is integrally formed with the concrete box beam. The first fixed pier, the second fixed pier and the third fixed pier are all provided with a lower slideway. The traction jack is arranged on the second fixed pier.
[0007] According to the rapid bridge jacking construction system of the embodiment of the present application, by adopting the jacking method for construction, temporary land acquisition and demolition can be avoided, the construction process can reduce the amount of relocation of railway equipment, and reduce the impact on the safe operation of existing railways, thereby reducing the supervision and coordination pressure and supervision and coordination fees of railway equipment management units, and thus helping to reduce the construction cost of the rapid bridge jacking construction system. In addition, by forming the upper slideway and the concrete box girder into one piece, the upper slideway can be prevented from falling when sliding, which is conducive to improving the safety and reliability of the rapid bridge jacking construction system. At the same time, the cooperation between the upper slideway and the lower slideway can reduce the friction resistance of the concrete box girder when sliding, which is conducive to increasing the moving speed of the concrete box girder.
[0008] In some embodiments, the bridge rapid jacking construction system also includes a hydraulic pump, which is used to drive the traction jack to perform jacking action, and the jacking speed is greater than 40m / h.
[0009] In some embodiments, the upper slide includes an embedded part and a slide part. The embedded part is arranged in the concrete box beam. The slide part is connected to the embedded part and partially exposed from the concrete box beam. The exposed thickness of the slide part is H1, and the value range of H1 satisfies: 1mm≤H1≤3mm.
[0010] In some embodiments, the bridge rapid pushing construction system also includes a support, and the first fixed pier, the second fixed pier and the third fixed pier are all provided with a support, and the side of the support facing the bridge component is provided with an installation groove, part of the lower slide is arranged in the installation groove, and the remaining part is exposed on the support, and the exposed thickness of the lower slide is H2, and the value range of H2 satisfies: 5mm≤H1≤10mm.
[0011] In some embodiments, the support includes an upper support member and a lower support member, the upper support member has a receiving groove, the receiving groove and the installation groove are located on two opposite sides of the upper support member, the upper support member is movably connected to the lower support member, and a portion of the lower support member is located in the receiving groove, and the orthographic projection of the opening of the receiving groove on the lower support member is located within the outline of the lower support member.
[0012] In some embodiments, the support further includes a hemispherical slider, a spherical groove is provided on the side of the lower support member facing the upper support member, the hemispherical slider is located in the spherical groove and connected to the upper support member.
[0013] In some embodiments, the bridge rapid pushing construction system also includes a correction component, which is arranged on the second fixed pier and the third fixed pier and is located on two opposite sides of the bridge component. The correction component is used to correct the moving trajectory of the bridge component.
[0014] In some embodiments, the correction assembly includes an active correction component, which is arranged on the second fixed pier. The active correction component includes a first disc spring, a correction jack and a first guide roller connected in sequence, and the guide roller abuts against the bridge assembly.
[0015] In some embodiments, the correction assembly also includes a passive correction component, which is arranged on the third fixed pier. The passive correction component includes a second disc spring and a second guide roller. The second guide roller is connected to the second disc spring and abuts against the bridge assembly.
[0016] In some embodiments, the bridge rapid pushing construction system also includes a first truss and a second truss, the first truss is used to connect the second fixed pier and the third fixed pier, and the second truss is used to connect two adjacent third fixed piers. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0019] Figure 1 A schematic diagram of a bridge rapid jacking construction system provided in some embodiments of the present application;
[0020] Figure 2 A partial schematic diagram of a bridge rapid jacking construction system provided in some embodiments of the present application;
[0021] Figure 3 for Figure 2 A partial enlarged view of the
[0022] Figure 4 A schematic diagram of the cooperation between the support and the glide path provided in some embodiments of the present application;
[0023] Figure 5 A schematic diagram of the cooperation between the support and the glide path provided in other embodiments of the present application;
[0024] Figure 6 A schematic diagram of an active deviation-correcting member provided in some embodiments of the present application;
[0025] Figure 7 A schematic diagram of a passive deviation-correcting member provided in some embodiments of the present application;
[0026] Figure 8A schematic diagram of the construction process of a bridge rapid jacking construction system provided in some embodiments of the present application.
[0027] Reference numerals:
[0028] 100. Bridge rapid jacking construction system; 200. Railway;
[0029] 1. The first fixed pier;
[0030] 2. Second fixed pier; 21. First truss; 22. Second truss;
[0031] 3. The third fixed pier;
[0032] 4. Bridge assembly; 41. Front guide beam; 42. Concrete box beam; 43. Rear guide beam;
[0033] 5. Slideway assembly; 51. Upper slideway; 511. Embedded parts; 512. Slideway section; 52. Lower slideway;
[0034] 6. Traction jack;
[0035] 7. Support; 71. Upper support member; 711. Accommodating groove; 72. Lower support member; 721. Spherical groove; 73. Hemispherical slider; 74. Support part; 75. Distribution beam; 76. Slideway beam;
[0036] 8. Correction component; 81. Active correction component; 811. First disc spring; 812. Correction jack; 813. First guide roller; 82. Passive correction component; 821. Second disc spring; 822. Second guide roller. DETAILED DESCRIPTION
[0037] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0039] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
[0040] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only references to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0041] In the description of the embodiments of the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.
[0042] See also Figure 1-Figure 3 , Figure 1 A schematic diagram of a bridge rapid jacking construction system provided in some embodiments of the present application, Figure 2 A partial schematic diagram of a bridge rapid jacking construction system provided in some embodiments of the present application, Figure 3 for Figure 2 The rapid bridge jacking construction system 100 may include a first fixed pier 1, a second fixed pier 2, a plurality of third fixed piers 3, a bridge assembly 4, a slideway assembly 5 and a traction jack 6.
[0043] The first fixed pier 1 is arranged on one side of the railway 200, and the second fixed pier 2 is arranged on the other side of the railway 200, that is, the first fixed pier 1 and the second fixed pier 2 are arranged on opposite sides of the railway 200. The first fixed pier 1 and the second fixed pier 2 may be permanent piers.
[0044] Exemplarily, the bridge rapid jacking construction system 100 can be used to cross four existing railways 200. The distance between the four tracks of the existing railway 200 is 24m, and the distance between the guardrails is 33m. Then, the distance between the first fixed pier 1 and the second fixed pier 2 can be 45m.
[0045] It should be noted that the jacking construction of existing lines needs to be carried out within the window points. For the 200 equipment management units of busy trunk railways, the maximum window time given is 120 minutes. Taking into account the power outage before the point and the power outage after the point, the effective window time is only 90 to 100 minutes.
[0046] The plurality of third fixed piers 3 are arranged at intervals on the side of the second fixed pier 2 away from the railway 200. Specifically, the plurality of third fixed piers 3 are located on the side of the second fixed pier 2 away from the railway 200 and are arranged at intervals. The spacing between the plurality of third fixed piers 3 may be different, and the third fixed piers 3 may be temporary piers that may be removed after the completion of the bridge construction.
[0047] Exemplarily, the bridge rapid jacking construction system 100 may further include a fourth fixed pier, and the fourth fixed pier may be located between two adjacent third fixed piers 3. Such an arrangement is conducive to improving the safety and reliability of bridge jacking.
[0048] The bridge component 4 is slidably disposed on the second fixed pier 2 and the third fixed pier 3 , that is, the bridge component 4 can slide relative to the second fixed pier 2 and the third fixed pier 3 .
[0049] The bridge assembly 4 may include a front guide beam 41, a concrete box beam 42, and a rear guide beam 43 connected in sequence. The front guide beam 41 may be located on a side of the concrete box beam 42 close to the first fixed pier 1, and the rear guide beam 43 may be located on a side of the concrete box beam 42 away from the first fixed pier 1. The front guide beam 41, the concrete box beam 42, and the rear guide beam 43 may be connected to the concrete box beam 42 by steel bars when the concrete box beam 42 is cast, or may be connected to the concrete box beam 42 by other means, which is not limited in the present application.
[0050] Among them, an anchor puller can be provided at the rear guide beam 43.
[0051] The slideway assembly 5 may include an upper slideway 51 and a lower slideway 52. The upper slideway 51 and the lower slideway 52 may cooperate with each other. The upper slideway 51 may be arranged on the side of the concrete box girder 42 facing the second fixed pier 2, and may be integrally formed with the concrete box girder 42. Thus, the upper slideway 51 may be cast together with the concrete box girder 42. Such an arrangement may prevent the upper slideway 51 from falling off when sliding, thereby facilitating the improvement of the safety and reliability of the bridge rapid jacking construction system 100.
[0052] The first fixed pier 1, the second fixed pier 2 and the third fixed pier 3 are all provided with a lower slide 52. The lower slide 52 and the first fixed pier 1, the second fixed pier 2 and the third fixed pier 3 can be integrally formed or can be separate parts, and this application does not limit this. Thus, the cooperation between the upper slide 51 and the lower slide 52 can reduce the friction resistance of the concrete box girder 42 when sliding, thereby facilitating the improvement of the moving speed of the concrete box girder 42.
[0053] It should be noted that the extension direction of the upper slideway 51 and the lower slideway 52 may be the same as the moving direction of the bridge component 4 , that is, they may extend in the direction from the second fixed pier 2 to the first fixed pier 1 .
[0054] The traction jack 6 is arranged on the second fixed pier 2. Thus, the bridge assembly 4 can be driven to move by the traction jack 6.
[0055] Exemplarily, the traction jack 6 may be a through-type traction jack 6. When the traction jack 6 is installed, a traction wire rope may be installed to the tooth block of the first fixed pier 1.
[0056] According to the bridge rapid jacking construction system 100 of the embodiment of the present application, by adopting the jacking method for construction, temporary land acquisition and demolition can be avoided, and the construction process can reduce the amount of relocation of railway 200 equipment and reduce the impact on the safe operation of the existing railway 200, thereby reducing the supervision and coordination pressure and supervision and coordination fees of the railway 200 equipment management unit, thereby helping to reduce the construction cost of the bridge rapid jacking construction system 100. In addition, by making the upper slide 51 and the concrete box girder 42 integrally formed, the upper slide 51 can be prevented from falling when sliding, thereby helping to improve the safety and reliability of the bridge rapid jacking construction system 100. At the same time, the cooperation between the upper slide 51 and the lower slide 52 can reduce the friction resistance of the concrete box girder 42 when sliding, thereby helping to increase the moving speed of the concrete box girder 42.
[0057] Please continue reading Figure 1 and Figure 2In some embodiments, the bridge rapid jacking construction system 100 further includes a hydraulic pump. The hydraulic pump is used to drive the traction jack 6 to perform jacking, and the jacking speed is greater than 40 m / h. For example, the flow rate of the hydraulic pump can be 110 L / min, the piston area of the hydraulic pump is 0.141 m2, and the speed V = flow rate / piston area: 110 / 0.141 / 1000×60min=46.8 m / h.
[0058] Exemplarily, the pushing speed of the hydraulic pump can be 41m / h, 42m / h, 43m / h, 44m / h, 45m / h or 46m / h, etc.
[0059] Please continue reading Figure 2 and Figure 3 In some embodiments, the upper slide 51 may include an embedded part 511 and a slide part 512. The embedded part 511 is disposed in the concrete box beam 42. The slide part 512 is connected to the embedded part 511 and partially exposed from the concrete box beam 42. The embedded part 511 may be connected to the slide part 512 by welding.
[0060] For example, the slideway 512 may be a stainless steel composite steel plate, which may be a composite of carbon steel and stainless steel. The stainless steel portion may be exposed to the concrete box beam 42, thereby preventing the portion exposed to the concrete box beam 42 from rusting, which is beneficial to improving the service life and reliability of the slideway 512.
[0061] The thickness of the slideway portion 512 exposed outside can be H1. The value range of H1 can satisfy: 1mm≤H1≤3mm. By limiting the thickness of the slideway portion 512 exposed outside, the reliability of the cooperation with the lower slideway 52 can be ensured.
[0062] For example, the exposed thickness H1 of the slide portion 512 may be 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm.
[0063] Among them, a plurality of upper slideways 51 may be provided on the concrete box beam 42, and such a configuration is helpful to reduce the manufacturing cost.
[0064] See also Figure 2-Figure 5 , Figure 4 A schematic diagram of the support and the glide path provided in some embodiments of the present application, Figure 5Schematic diagram of the cooperation between the support and the glide path provided for other embodiments of the present application. In some embodiments, the bridge rapid jacking construction system 100 may further include a support 7. The first fixed pier 1, the second fixed pier 2 and the third fixed pier 3 are all provided with a support 7. A mounting groove may be provided on the side of the support 7 facing the bridge component 4. Part of the glide path 52 is arranged in the mounting groove, and the remaining part is exposed on the support 7. Among them, the glide path 52 can be fixed in the mounting groove by bonding, fastener connection, etc.
[0065] Exemplarily, the glide path 52 may be an MGE plate.
[0066] The exposed thickness of the lower slideway 52 is H2. The value range of H2 satisfies: 5mm≤H1≤10mm. Here, "exposed" means that the overall thickness of the lower slideway 52 is greater than the thickness of the mounting groove. Therefore, by limiting the exposed thickness of the lower slideway 52, the reliability of the cooperation with the upper slideway 51 can be ensured, while also saving materials and reducing the friction coefficient during the pushing process.
[0067] Exemplarily, the exposed thickness H2 of the lower slideway 52 may be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm.
[0068] Please continue reading Figure 2-Figure 5 The support 7 may include an upper support member 71 and a lower support member 72. The upper support member 71 has a receiving groove 711. The receiving groove 711 and the mounting groove may be located on two opposite sides of the upper support member 71. The upper support member 71 is movably connected to the lower support member 72. Thus, the slide assembly 5 can be easily passed through the support 7.
[0069] Part of the lower support member 72 is located in the receiving groove 711. The orthographic projection of the opening of the receiving groove 711 on the lower support member 72 can be located within the outline of the lower support member 72. Specifically, the upper support member 71 can be substantially formed into a boat shape, and the size of the opening of the receiving groove 711 of the upper support member 71 can be smaller than the size of the protruding portion of the lower support member 72, thereby limiting the movement of the upper support member 71. In addition, the edges of the upper support member 71 close to the first fixed pier 1, the second fixed pier 2 and the third fixed pier 3 can be chamfered, so that the bridge component 4 can smoothly pass through the lower slide, which is conducive to improving the moving speed of the bridge component 4.
[0070] Please continue reading Figure 2-Figure 5 In some embodiments, the support 7 may further include a hemispherical slider 73. A spherical groove 721 is provided on the side of the lower support member 72 facing the upper support member 71. The hemispherical slider 73 is located in the spherical groove 721 and is connected to the upper support member 71. Thus, vertical bearing capacity, horizontal friction force and a certain rotation function can be ensured, thereby eliminating the process of manually switching the slider, which is conducive to improving the jacking efficiency.
[0071] See also Figure 2 In some embodiments, the bridge rapid jacking construction system 100 may further include a deviation correction component 8. The deviation correction component 8 may be disposed on the second fixed pier 2 and the third fixed pier 3, and located on opposite sides of the bridge component 4. The deviation correction component 8 may be used to correct the movement trajectory of the bridge component 4. Due to factors such as the unevenness of the upper slideway 51 and the lower slideway 52, the asynchronous output of the traction jack 6, etc. during the jacking process of the bridge component 4, the bridge component 4 may have a problem of deviation from the trajectory line. The deviation correction component 8 may correct the movement trajectory of the bridge component 4, thereby facilitating improving the jacking efficiency.
[0072] Exemplarily, the deviation-correcting component 8 may be fixed by a support portion 74 , and the support portion 74 may be disposed on a side of the deviation-correcting component 8 away from the bridge component 4 .
[0073] See also Figure 6 , Figure 6 Schematic diagram of active deviation-correcting components provided for some embodiments of the present application. In some embodiments, the active deviation-correcting component 81 can be arranged on the second fixed pier 2. The active deviation-correcting component 81 can include a first disc spring 811, a deviation-correcting jack 812 and a first guide roller 813 connected in sequence, and the guide roller abuts against the bridge component 4. Among them, the maximum elastic force of the first disc spring 811 can be 60t / 2cm. Specifically, the first guide roller 813 can abut against the side wall of the bridge component 4. Thus, the first guide roller 813 can be pushed to move by the deviation-correcting jack 812, so that the moving trajectory of the bridge component 4 can be corrected, and the weight of the front guide beam 41 is relatively low, which is convenient for adjusting the bridge component 4.
[0074] See also Figure 7 , Figure 7 Schematic diagram of a passive deviation-correcting component provided for some embodiments of the present application. In some embodiments, the deviation-correcting component 8 may further include a passive deviation-correcting component 82. The passive deviation-correcting component 82 may be disposed on the third fixed pier 3. The passive deviation-correcting component 82 includes a second disc spring 821 and a second guide roller 822, and the second guide roller 822 is connected to the second disc spring 821 and abuts against the bridge component 4. In this way, the moving trajectory of the bridge component 4 can be corrected, and the weight of the front guide beam 41 is relatively low, which facilitates the adjustment of the bridge component 4.
[0075] Please continue reading Figure 1 and Figure 2 In some embodiments, the bridge rapid jacking construction system 100 may further include a first truss 21 and a second truss 22. The first truss 21 is used to connect the second fixed pier 2 and the third fixed pier 3, and the second truss 22 is used to connect two adjacent third fixed piers 3. The first truss 21 and the second truss 22 can achieve stability and safety of the overall structure.
[0076] The following is a description of the construction process of the bridge rapid jacking construction system 100 according to the embodiment of the present application. Figure 2 and Figure 8 , Figure 8 A schematic diagram of the construction process of a bridge rapid jacking construction system provided in some embodiments of the present application.
[0077] S1: Before using the bridge rapid jacking construction system 100 for construction, carry out relocation work of related railway 200 equipment within the construction impact area.
[0078] S2: construct the first fixed pier 1, the second fixed pier 2 and the third fixed pier 3, connect the second fixed pier 2 and the third fixed pier 3 with the first truss 21, connect the two adjacent third fixed piers 3 with the second truss 22, and pay attention to pre-embedding related embedded parts.
[0079] S3: Install the distribution beam 75, the leveling track beam 76 and the support 7 on the tops of the second fixed pier 2 and the third fixed pier 3 respectively.
[0080] S4: Use the second fixed pier 2, the third fixed pier 3, the first truss 21, and the second truss 22 to cast a prestressed concrete box girder 42 on the side away from the railway 200, assemble the front and rear guide beams 43 and the anchor puller at the rear guide beam 43, install the traction jack 6 on the top of the second fixed pier 2, and install the traction wire rope to the tooth block of the first fixed pier 1.
[0081] S5: Support parts 74 and deviation-correcting components 8 are arranged at both ends of the distribution beam 75 .
[0082] S6: Start the traction jack 6, and push the bridge component 4 for a trial of 5.0m, with the front guide beam 41 to the outside of the railway 200 limit. Record the pushing force, and calculate the friction coefficient to provide data support for the subsequent formal pushing.
[0083] S7: formally drive the traction jack 6, adjust the traction force according to the test data, adopt the rapid jacking mode, push 40m within the skylight point (90 minutes), and the front guide beam 41 reaches the first fixed pier 1.
[0084] S8: Continue pushing for 30 m in rapid pushing mode, push into place, remove the front and rear guide beams 43, drop the beams to the designed position, and complete the pushing condition.
[0085] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.
[0086] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. A bridge rapid jacking construction system, characterized in that: The bridge rapid jacking construction system comprises: a first fixed pier, the first fixed pier being arranged on one side of the railway; a second fixed pier, the second fixed pier being arranged on the other side of the railway; A plurality of third fixed piers, wherein the plurality of third fixed piers are arranged at intervals on a side of the second fixed pier away from the railway; A bridge assembly, the bridge assembly being slidably disposed on the second fixed pier and the third fixed pier, the bridge assembly comprising a front guide beam, a concrete box beam and a rear guide beam connected in sequence; A slideway assembly, the slideway assembly comprising an upper slideway and a lower slideway, the upper slideway cooperates with the lower slideway, the upper slideway is arranged on a side of the concrete box girder facing the second fixed pier, and is integrally formed with the concrete box girder, and the first fixed pier, the second fixed pier and the third fixed pier are all provided with the lower slideway; A traction jack is arranged on the second fixed pier.
2. The bridge rapid jacking construction system according to claim 1 is characterized in that: The bridge rapid jacking construction system also includes a hydraulic pump, which is used to drive the traction jack to perform jacking action, and the jacking speed is greater than 40m / h.
3. The bridge rapid jacking construction system according to claim 1 is characterized in that: The upper slide includes an embedded part and a slide part. The embedded part is arranged in the concrete box beam. The slide part is connected to the embedded part and is partially exposed from the concrete box beam. The exposed thickness of the slide part is H1, and the value range of H1 satisfies: 1mm≤H1≤3mm.
4. The bridge rapid jacking construction system according to claim 1 is characterized in that: The bridge rapid pushing construction system also includes a support, which is provided on the first fixed pier, the second fixed pier and the third fixed pier. The support is provided with a mounting groove on the side facing the bridge component, part of the lower slide is arranged in the mounting groove, and the remaining part is exposed from the support. The exposed thickness of the lower slide is H2, and the value range of H2 satisfies: 5mm≤H1≤10mm.
5. The bridge rapid jacking construction system according to claim 4 is characterized in that: The support includes an upper support member and a lower support member, the upper support member has a receiving groove, the receiving groove and the installation groove are located on two sides of the upper support member opposite to each other, the upper support member is movably connected to the lower support member, and a portion of the lower support member is located in the receiving groove, and the orthographic projection of the opening of the receiving groove on the lower support member is located within the outline of the lower support member.
6. The bridge rapid jacking construction system according to claim 5 is characterized in that: The support also includes a hemispherical sliding block. A spherical groove is provided on one side of the lower supporting member facing the upper supporting member. The hemispherical sliding block is located in the spherical groove and is connected to the upper supporting member.
7. The bridge rapid jacking construction system according to claim 1 is characterized in that: The bridge rapid jacking construction system also includes a correction component, which is arranged on the second fixed pier and the third fixed pier and is located on two opposite sides of the bridge component. The correction component is used to correct the movement trajectory of the bridge component.
8. The bridge rapid jacking construction system according to claim 7 is characterized in that: The correcting assembly includes an active correcting part, which is arranged on the second fixed pier. The active correcting part includes a first disc spring, a correcting jack and a first guide roller connected in sequence, and the guide roller abuts against the bridge assembly.
9. The bridge rapid jacking construction system according to claim 8 is characterized in that: The correcting assembly also includes a passive correcting component, which is arranged on the third fixed pier. The passive correcting component includes a second disc spring and a second guide roller. The second guide roller is connected to the second disc spring and abuts against the bridge assembly.
10. The bridge rapid jacking construction system according to claim 1, characterized in that: The bridge rapid jacking construction system also includes a first truss and a second truss, the first truss is used to connect the second fixed pier and the third fixed pier, and the second truss is used to connect two adjacent third fixed piers.