Short line precast pedestal, long line precast pedestal, mixed method pedestal and construction method

Abstract

The present application relates to a multipurpose multi-line segment beam prefabricated long-short line mixed pedestal and construction method, including short line prefabricated pedestal and long line prefabricated pedestal, which all include multiple pipe pile foundations and strip columns, the pipe pile foundations are arranged in rows and columns and are arranged at intervals, a support layer is arranged above the pipe pile foundations, multiple strip columns are arranged in rows and at intervals above the support layer, and an I-beam cushion layer is arranged above the strip columns. The strip column II of the long line prefabricated pedestal is further reinforced on the support layer II through an anchor device, the strip column II is provided with multiple matching areas for placing segment beam matching blocks, and the matching areas are provided with adjustment tables; the strip column II close to both ends of the long line prefabricated pedestal is provided with a large groove, and the strip column II away from both ends of the long line prefabricated pedestal is provided with a small groove; and a tension hole is arranged on the upper part of the strip column II. Through the placement of matching segments produced by the short line method at both ends and in the middle of the long line prefabricated pedestal, the template is hoisted and matched in multiple directions and advances from both ends, so that the multi-purpose multi-line efficient prefabricated segment beam is realized.

Description

Technical Field

[0001] This invention relates to the field of prefabrication equipment technology for industrialized bridge production, specifically to a short-line prefabrication platform, a long-line prefabrication platform, a hybrid platform, and a construction method thereof. Background Technology

[0002] Precast segmental bridges are increasingly used in engineering projects in various countries and regions due to their high construction speed and lower construction costs. Current segmental beam prefabrication generally employs long-line or short-line prefabrication platforms to prefabricate beam segments.

[0003] The long-line prefabrication platform is constructed according to the design alignment of the segmental beam, which can achieve a high degree of alignment accuracy control. It does not require timely removal of completed segments from the platform. The prefabrication process is simple, it is easy to adapt to complex alignments, and the construction production speed is relatively fast. However, this method has obvious disadvantages. It requires the prefabrication and installation of the bottom formwork of the entire bridge in one go, which occupies a large area, has poor adaptability, uses a large amount of formwork, and the alignment accuracy of the prefabricated segments on curved sections is low. It is not suitable for various curved alignments.

[0004] Short-line prefabrication platforms have the advantages of occupying less space and using fewer formwork, but the construction and production efficiency is relatively low, the prefabrication process is cumbersome and it is not easy to adapt to complex lines. The workload of measurement and adjustment before the production of each segment is large, and the requirements for line control, formwork rigidity and flexibility are very high.

[0005] This invention combines the two methods to achieve the goal of leveraging their respective strengths and compensating for their weaknesses. It primarily addresses the problems of wasted formwork in the long-line method for prefabricating segmental beams on prefabrication platforms and the difficulty in controlling the alignment of transition curves and circular curves in the short-line method for prefabricating segmental beams on prefabrication platforms during the prefabrication of multi-span curved beam segments. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a short-line precast platform, a long-line precast platform, a hybrid platform, and a construction method. This addresses the significant deficiencies of the commonly used long-line and short-line precast platforms mentioned in the background section regarding the precasting of segmental beams. By combining the two methods, the invention aims to leverage their respective strengths and compensate for their weaknesses, achieving multi-purpose long-line and short-line beam fabrication, as well as enabling the fabrication of beams with various linear shapes, including straight lines, transition curves, circular curves, and vertical curves.

[0007] To achieve the above objectives, the present invention employs the following technical solution: A short-line precast platform includes multiple pipe pile foundations I and strip columns I. The pipe pile foundations I are arranged in rows and columns at intervals. A support layer I is provided above the pipe pile foundations I. Multiple strip columns I are arranged in rows at intervals above the support layer I. An I-beam pad layer I is provided above the strip columns I.

[0008] Based on the aforementioned short-line precast platform, the support layer I includes a concrete cushion layer I and a reinforced concrete raft slab I. The concrete cushion layer I is set on top of the pipe pile foundation I, and the reinforced concrete raft slab I is set on top of the concrete cushion layer I. Strip columns I are set on the reinforced concrete raft slab I. Based on the aforementioned short-line prefabrication platform, segmental box girder template I is placed on the I-beam pad layer I, and the segmental box girder template I is a movable template.

[0009] Based on the aforementioned short-line precast platform, the pipe pile foundation I is set as a prestressed pipe pile that matches the diameter of the strip column I; Based on the aforementioned short-line precast platform, a cavity is provided on the upper part of the pile body of the pipe pile foundation I.

[0010] A long-line precast platform includes multiple pipe pile foundations II and strip columns II. The pipe pile foundations II are arranged in rows and columns at intervals. A support layer II is set above the pipe pile foundations II. Multiple strip columns II are arranged in rows at intervals above the support layer II. An I-beam pad layer II is set above the strip columns II. The strip columns II are reinforced on the support layer II by anchors. Among them, the strip columns II are spaced apart, and the strip columns II are provided with multiple matching areas for placing the segment beam matching blocks. The matching areas are provided with adjustment platforms. Large grooves are provided on the strip columns II near both ends of the long-line prefabrication platform, and small grooves are provided on the strip columns II away from both ends of the long-line prefabrication platform. Pull holes are provided at the top of the strip column II.

[0011] Based on the aforementioned long-line precast platform, the support layer II includes a concrete cushion layer II and a reinforced concrete raft foundation II; the concrete cushion layer II is set on top of the pipe pile foundation II, the reinforced concrete raft foundation II is set on top of the concrete cushion layer II, and strip columns II are set on the reinforced concrete raft foundation II. Based on the aforementioned long-line prefabrication platform, segmental box girder template II is placed on the I-beam pad II, and the segmental box girder template II is a movable template.

[0012] Based on the aforementioned long-line prefabrication platform, the strip column II is spaced with partitions, and I-beam pads are placed on the partitions, with the spacing matching the width of the matching blocks of the two segment beams.

[0013] Based on the aforementioned long-line precast platform, the pipe pile foundation II is set as a prestressed pipe pile that matches the diameter of the strip column II; Based on the aforementioned long-line prefabrication platform, a cavity is provided on the upper part of the pile body of the pipe pile foundation II.

[0014] A multi-purpose, multi-linear segmental beam precasting platform using a hybrid long-line and short-line method is generally arranged as a series of segmental beam hybrid platforms, comprising the aforementioned short-line precast platforms and the aforementioned long-line precast platforms spaced apart; wherein... A steel reinforcement binding area is set on one side of the short-line precast platform, and a long-line precast platform is set on the other side; the long-line precast platform is equipped with multiple sets of long-line precast side forms; The short-line prefabrication platform is set at the pier location.

[0015] Based on the aforementioned multi-purpose multi-linear segmental beam precasting long-line and short-line hybrid platform, the strip column II of the long-line precast platform is set in three rows; the strip column I of the short-line precast platform is set in two rows.

[0016] The construction method for a precast long-line and short-line hybrid platform for a multi-purpose multi-linear segmental beam includes the following steps: a. According to the bridge design drawings, short-line prefabrication platforms and long-line prefabrication platforms are arranged at intervals, and the box girder segments that need to be prefabricated by the long-line method and the short-line method in the same prefabrication segment are set. b. The two ends of the long-line prefabrication platform are divided into #-# areas towards the middle, and the middle part of the long-line prefabrication platform is divided into multiple #-# areas, of which # and # are used to place the segment beam matching blocks produced by the short-line prefabrication platform; c. Tie reinforcing bars on the formwork in the reinforcing bar binding area next to the short-line precast platform, and pour and cure the segmental beam matching blocks for long-line matching through the short-line precast platform. d. Move the segmental beam matching block prefabricated on the short-line prefabrication platform to the matching area of ​​the long-line prefabrication platform, i.e., area # and area #, adjust and position it with the adjustment platform, and use the segmental beam prefabricated on the short-line prefabrication platform as the matching segment to install and adjust the template system for the next segment; e. Based on the required number of long-line prefabrication platform templates, prefabricate the corresponding segment beam matching blocks in multiple directions from both ends to the middle and from the middle to both ends in sequence. Keep the matching blocks, which are the new prefabricated segments, on the long-line prefabrication platform. The prefabricated segment beams should be promptly hoisted to the beam storage area. f. When the remaining closure segment of the side span is completed, the end template returns to the beginning position and the next prefabrication begins.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention provides a multi-purpose, multi-linear segmental beam precasting platform and construction method that combines long and short line methods. The platform combines the advantages of both long and short line methods while avoiding their respective limitations. This invention has a simple structure, is easy to operate, and has strong applicability and versatility.

[0018] 2. By casting and curing segmental beam blocks for matching in the long-line method using short-line precast platforms, high precision and adaptability are achieved. Then, the segments precast in the short-line method are used as matching blocks for long-line precast platform construction. The long-line precast platform eliminates the disadvantages of a complete set of precast templates and uses a multi-segment template system adapted to production efficiency for segment precasting, realizing the reuse of templates and the purpose of high precision and multi-line control, making the precast segments more flexible.

[0019] 3. By using the matching segments produced at both ends and the middle of the long prefabrication platform to perform multi-directional, two-way parallel hoisting and prefabrication of the template, the efficient utilization of the template and the overall production efficiency are greatly improved. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0021] Figure 1 This is a plan view of the short-line prefabrication platform proposed in this invention; Figure 2 This is an elevation view of the short-line prefabrication platform proposed in this invention; Figure 3 This is a side view of the short-line prefabrication platform proposed in this invention; Figure 4 This is a plan view of the long-line prefabrication platform proposed in this invention; Figure 5 This is an elevation view of the long-line prefabricated platform proposed in this invention; Figure 6 This is a side view of the long-line prefabricated platform proposed in this invention; Figure 7 This is a plan view of the arrangement of the hybrid platform proposed in this invention; Figure 8 This is an elevation view of the arrangement of the hybrid platform proposed in this invention; The components are as follows: 1. Pipe pile foundation I; 2. Concrete cushion layer I; 3. Reinforced concrete raft foundation I; 4. Strip column I; 5. I-beam cushion layer I; 6. Segmental box girder formwork I; 7. Adjustment platform; 8. Tie hole; 9. I-beam pad; 10. Pipe pile foundation II; 11. Anchorage; 12. Strip column II; 13. Large groove; 14. Small groove; 15. Support frame; 16. Concrete cushion layer II; 17. Reinforced concrete raft foundation II; 18. I-beam cushion layer II; 19. Segmental box girder formwork II; 20. Reinforcement binding area; 21. Short-line prefabrication platform; 22. Observation tower; 23. Long-line prefabrication platform. Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 3 The present invention provides the following technical solution: a short-line prefabricated platform, comprising multiple pipe pile foundations I 1 and strip columns I 4, wherein the pipe pile foundations I 1 are arranged in rows and columns at intervals, a support layer I is provided above the pipe pile foundations I 1, multiple strip columns I 4 are arranged in rows at intervals above the support layer I, and an I-beam pad layer I 5 is provided above the strip columns I 4.

[0024] In this embodiment, the support layer I of the short-line precast platform 21 includes a concrete cushion layer I2 and a reinforced concrete raft slab I3. The concrete cushion layer I2 is embedded on the top of the pipe pile foundation I1, and the reinforced concrete raft slab I3 is poured on the top of the concrete cushion layer I2. Strip columns I4 are set on the reinforced concrete raft slab I3. In this embodiment, the segmental box girder template I6 is placed on the I-beam pad I5 of the short-line prefabrication platform 21. The segmental box girder template I6 is a movable template. During construction, after the produced segments have completed the matching work, they are hoisted to the beam storage area as soon as possible. The remaining segmental box girder template I6 is hoisted and moved to the next segment for matching and adjustment, so as to realize the flexible reuse of the template of the long-line prefabrication platform 23.

[0025] In this embodiment, the pipe pile foundation I1 of the short-line precast platform 21 is set as a prestressed pipe pile that matches the diameter of the strip column I4, so as to achieve the reinforcement effect of the pipe pile foundation I1 and improve the stability of the foundation. In this embodiment, a cavity is provided in the upper part of the pipe pile foundation I1 of the short-line precast platform 21, which is filled with concrete; the pipe pile foundation I1 is filled with core-filling concrete of the same strength grade as the reinforced concrete raft slab I3.

[0026] In this embodiment, a support frame 15 is provided above the strip column I 4 on the short-line prefabrication platform 21 to enhance the load-bearing capacity of the strip column I 4.

[0027] Please see Figures 4 to 6The present invention provides the following technical solution: a long-line prefabricated platform, comprising multiple pipe pile foundations II 10 and strip columns II 12, wherein the pipe pile foundations II 10 are arranged in rows and columns at intervals, a support layer II is provided above the pipe pile foundations II 10, multiple strip columns II 12 are arranged in rows at intervals above the support layer II, an I-beam pad layer II 18 is provided above the strip columns II 12, and the strip columns II 12 are reinforced on the support layer II by anchors 11; Among them, strip columns II 12 are spaced apart, and strip columns II 12 are provided with multiple matching areas for placing segmental beam matching blocks. The matching area is provided with an adjustment platform 7. The segmental box girder prefabricated on the short-line prefabrication platform 21 is controlled and positioned by the adjustment platform 7 and used as a matching block. The adjustment platform 7 is selected as a three-dimensional adjustment platform. Large grooves 13 are provided on the strip columns II 12 near both ends of the long precast platform 23, and small grooves 14 are provided on the strip columns II 12 away from both ends of the long precast platform 23; Tie holes 8 are provided on the upper part of the strip column II 12.

[0028] In this embodiment, the support layer II of the long-line precast platform 23 includes a concrete cushion layer II 16 and a reinforced concrete raft slab II 17; the concrete cushion layer II 16 is embedded on the top of the pipe pile foundation II 10, the reinforced concrete raft slab II 17 is poured on the top of the concrete cushion layer II 16, and strip columns II 12 are set on the reinforced concrete raft slab II 17. In this embodiment, segmental box girder template II 19 is placed on the I-beam pad II 18 of the long-line prefabrication platform 23. The segmental box girder template II 19 is a movable template. During construction, after the produced segments have completed the matching work, they are hoisted to the beam storage area as soon as possible. The remaining segmental box girder template II 19 is hoisted and moved to the next segment for matching and adjustment, so as to realize the flexible reuse of the template of the long-line prefabrication platform 23.

[0029] In this embodiment, the strip columns II 12 of the long-line prefabrication platform 23 are spaced apart, and I-beam pads 9 are placed on the spacers. The small grooves 14 opposite to the spacers can be used to place the I-beam pads 9. After placing the I-beam pads 9, the continuity and flatness of the plane of the strip columns II 12 can be ensured, and the integrity, rigidity and stability of the long-line prefabrication platform 23 can also be improved. The spacing matches the width of the matching blocks of the two segment beams.

[0030] In this embodiment, the pipe pile foundation II 10 of the long-line precast platform 23 is set as a prestressed pipe pile with a diameter matching that of the strip column II 12, so as to achieve the reinforcement effect of the pipe pile foundation II 10 and improve the stability of the foundation. In this embodiment, a cavity is provided in the upper part of the pipe pile foundation II 10 of the long-line precast platform 23, which is filled with concrete; the pipe pile foundation II 10 is filled with core-filling concrete of the same strength grade as the reinforced concrete raft slab II 17.

[0031] In this embodiment, a support frame 15 is provided above the long prefabricated platform 23 and the strip column II 12 to enhance the load-bearing capacity of the strip column II 12.

[0032] In a preferred embodiment of this solution, please refer to Figures 7 to 8 This invention provides a multi-purpose, multi-linear segmental beam prefabrication platform using a hybrid long-line and short-line method. Its overall arrangement is a series of segmental beam hybrid platforms, including the aforementioned short-line prefabrication platform 21 and the aforementioned long-line prefabrication platform 23, spaced apart. A rebar tying area 20 is set on one side of the short-line prefabrication platform 21, and a rebar tying jig is placed in the rebar tying area 20; a long-line prefabrication platform 23 is set on the other side; an observation tower 22 is set between the short-line prefabrication platform 21 and the long-line prefabrication platform 23, and an observation tower 22 is set on the other side of the long-line prefabrication platform 23; the long-line prefabrication platform 23 is equipped with multiple sets of long-line prefabrication side molds; The short-line prefabrication platform 21 is set at the pier location.

[0033] In the preferred embodiment of this scheme, the long-line precast platform 23 of the multi-purpose multi-linear segmental beam precasting mixed long-line and short-line platform is configured with three rows of strip columns II 12; the short-line precast platform 21 is configured with two rows of strip columns I 4. Before construction, the control lines of strip columns I 4 and II 12 are first laid out according to the drawings, and then their detailed dimension lines are laid out according to the construction control lines. The areas in contact with the reinforced concrete raft slab I 3 and reinforced concrete raft slab II 17 are roughened to achieve the purpose of multi-purpose and multi-linearity.

[0034] In another preferred embodiment of this solution, the present invention provides a construction method based on the above-mentioned multi-purpose multi-linear segmental beam precast long-line and short-line hybrid support, comprising the following construction steps: a. According to the bridge design drawings, short-line prefabrication platforms 21 and long-line prefabrication platforms 23 are arranged at intervals, and the box girder segments that need to be prefabricated by the long-line method and the short-line method in the same prefabrication segment are set. b. The two ends of the long-line prefabrication platform 23 are divided into 12#-0# areas towards the middle, namely 12#, 11#, 10#, 9#, 8#, 7#, 6#, 5#, 4#, 3#, 2#, 1#, and 0# areas; the middle part of the long-line prefabrication platform 23 is divided into multiple 0#-5# areas, namely 0#, 1#, 2#, 3#, 4#, 5# areas and 5#, 4#, 3#, 2#, 1#, and 0## areas; among them, 0# and 12# are used to place the segmental beam matching blocks produced by the short-line prefabrication platform 21; c. Adjust the bottom formwork of the short-line precast platform 21 to the design position, tie the reinforcing bars on the formwork of the reinforcing bar binding area 20 next to the short-line precast platform 21, and pour and cure the segmental beam matching blocks for long-line method matching through the short-line precast platform 21; that is, the short-line precast platform 21 is the 0# short-line method precast area and the 12# short-line method precast area; d. The long-line prefabrication platform 23 is equipped with multiple sets of long-line prefabrication side molds. The number of long-line prefabrication side molds is adapted to the production and storage needs of segmental beams. The bottom mold of the long-line platform is adjusted to the design position, and the matching blocks of the segmental beams prefabricated on the short-line prefabrication platform 21 are moved to the matching area of ​​the long-line prefabrication platform 23, namely the 0# and 12# areas. The adjusting platform 7 is used to adjust and position the segments. The segmental beams prefabricated on the short-line prefabrication platform 21 are used as the matching segments, and the template system for the next segment is installed and adjusted. e. Based on the required number of templates for the long-line prefabrication platform 23, proceed from both ends to the middle and from the middle to both ends in a multi-directional parallel manner. This allows for the simultaneous prefabrication of corresponding segment beam matching blocks in multiple directions, such as 12#➡0#, 0#➡12#, 5#➡0#, and 0#➡5#. Keep the matching blocks for the new prefabrication segments on the long-line prefabrication platform 23. Promptly transport the prefabricated segment beams to the beam storage area to free up templates for recycling and efficient production, thereby achieving efficient use of templates and a significant improvement in overall production efficiency. f. When the remaining closure segment of the side span is completed, the end template returns to the beginning position and the next prefabrication begins.

[0035] By using the matching segments produced at both ends and the middle of the short-line prefabrication platform 21 of the long-line prefabrication platform 23, the templates are hoisted and matched in multiple directions from both ends for prefabrication, so as to achieve efficient use of templates and reasonable allocation of the overall production plan, and achieve the purpose of multi-purpose and multi-linear prefabrication of segmental beams.

[0036] This construction method can be used for the construction of curved bridges. The construction method for the precast long and short line hybrid method pedestal of multi-purpose multi-linear segmental beams for curved bridges is the same as that for straight bridges, so it will not be described in detail here.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for a multi-purpose, multi-linear segmental beam precast long-line and short-line hybrid support platform, characterized in that, The overall arrangement of the hybrid platform is a single segmental beam hybrid platform, which includes short-line precast platforms (21) and long-line precast platforms (23) arranged at intervals. A steel reinforcement binding area (20) is set on one side of the short-line prefabrication platform (21), and a long-line prefabrication platform (23) is set on the other side. The short-line precast platform (21) is set at the pier position, which includes multiple pipe pile foundations I (1) and strip columns I (4). The pipe pile foundations I (1) are arranged in rows and columns and are set at intervals. A support layer I is set above the pipe pile foundations I (1). Multiple strip columns I (4) are set in rows and at intervals above the support layer I. An I-beam pad layer I (5) is set above the strip columns I (4). The long-line prefabrication platform (23) is equipped with multiple sets of long-line prefabrication side molds; the long-line prefabrication platform (23) includes multiple pipe pile foundations II (10) and strip columns II (12). The pipe pile foundations II (10) are arranged in rows and columns at intervals. A support layer II is set above the pipe pile foundations II (10). Multiple strip columns II (12) are arranged in rows at intervals above the support layer II. An I-beam pad II (18) is set above the strip columns II (12). The strip columns II (12) are reinforced on the support layer II by anchors (11). Among them, strip columns II (12) are spaced apart, and strip columns II (12) are provided with multiple matching areas for placing segmental beam matching blocks. The matching areas are provided with adjustment platforms (7); the strip columns II (12) near both ends of the long-line precast platform (23) are provided with large grooves (13), and the strip columns II (12) far from both ends of the long-line precast platform (23) are provided with small grooves (14); tie holes (8) are provided on the upper part of strip columns II (12); the construction method of the multi-purpose multi-line segmental beam precast long-line and short-line mixed platform is as follows: a. According to the bridge design drawings, short-line prefabrication platforms (21) and long-line prefabrication platforms (23) are arranged at intervals, and the box girder segments that need to be prefabricated by the long-line method and the short-line method in the same prefabrication segment are set. b. The two ends of the long-line prefabrication platform (23) are divided into 12#-0# areas towards the middle, and the middle part of the long-line prefabrication platform (23) is divided into multiple 0#-5# areas, of which 0# and 12# are used to place the segment beam matching blocks produced by the short-line prefabrication platform (21); c. Tie the reinforcing bars on the formwork of the reinforcing bar binding area next to the short-line precast platform (21), and cast the segmental beam matching block for long-line matching through the short-line precast platform (21) and cure it. d. Move the segment beam matching block prefabricated on the short-line prefabrication platform (21) to the matching area of ​​the long-line prefabrication platform (23), namely the 0# and 12# areas, adjust and position it with the adjustment platform (7), and use the segment beam prefabricated on the short-line prefabrication platform (21) as the matching segment to install and adjust the template system of the next segment; e. Based on the required number of templates for the long-line prefabrication platform (23), prefabricate the corresponding segment beam matching blocks in multiple directions from both ends to the middle and from the middle to both ends in sequence. Keep the matching blocks, which are new prefabricated segments, on the long-line prefabrication platform (23). The prefabricated segment beams are promptly hoisted to the beam storage area. f. When the remaining closure segment of the side span is completed, the end template returns to the beginning position and the next prefabrication begins.

2. The construction method of the precast long-line and short-line hybrid platform for multi-purpose multi-linear segmental beams according to claim 1, characterized in that, The long-line prefabrication platform (23) has three rows of strip columns II (12); the short-line prefabrication platform (21) has two rows of strip columns I (4).

3. The construction method of the precast long-line and short-line hybrid platform for multi-purpose multi-linear segmental beams according to claim 1, characterized in that, The supporting layer I of the short-line precast platform (21) includes a concrete cushion layer I (2) and a reinforced concrete raft slab I (3). The concrete cushion layer I (2) is set on top of the pipe pile foundation I (1), and the reinforced concrete raft slab I (3) is set on top of the concrete cushion layer I (2). Strip columns I (4) are set on the reinforced concrete raft slab I (3). A segmental box girder template I (6) is placed on the I-beam pad I (5), and the segmental box girder template I (6) is a movable template.

4. The construction method of the precast long-line and short-line hybrid platform for multi-purpose multi-linear segmental beams according to claim 1, characterized in that, The pipe pile foundation I (1) is set as a prestressed pipe pile with a diameter matching that of the strip column I (4); a cavity is set on the upper part of the pipe pile foundation I (1).

5. The construction method of the precast long-line and short-line hybrid method platform for multi-purpose multi-linear segmental beams according to claim 1, characterized in that, The support layer II of the long-line precast platform (23) includes a concrete cushion layer II (16) and a reinforced concrete raft slab II (17); the concrete cushion layer II (16) is set on top of the pipe pile foundation II (10), the reinforced concrete raft slab II (17) is set on top of the concrete cushion layer II (16), and strip columns II (12) are set on the reinforced concrete raft slab II (17). Segment box girder template II (19) is placed on the I-beam pad II (18), and the segment box girder template II (19) is a movable template.

6. The construction method of the precast long-line and short-line hybrid platform for multi-purpose multi-linear segmental beams according to claim 1, characterized in that, The strip column II (12) is provided with partitions at intervals, and I-beam pads (9) are placed on the partitions, with the intervals matching the width of the matching blocks of the two segment beams.

7. The construction method of the precast long-line and short-line hybrid platform for multi-purpose multi-linear segmental beams according to claim 1, characterized in that, The pipe pile foundation II (10) is set as a prestressed pipe pile with a diameter matching that of the strip column II (12); a cavity is provided on the upper part of the pipe pile foundation II (10).

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