A sectional construction method for a cast-in-place concrete structure of a water landscape platform

Abstract

The present invention discloses a segmented construction method for a cast-in-place concrete structure of a water landscape platform. The bearing platform, beams and structural slabs are constructed in batches. After the construction of the water engineering piles is completed, the bearing platform is constructed first by means of a hoop. After the bearing platform has a certain strength, the beams are constructed by using the bearing platform, and finally the structural slabs are constructed by using the beams. The method of the present invention solves the problem of the support stability of the cast-in-place concrete structure on water caused by the inability of the underwater silt layer to serve as a support system. At the same time, it improves the pouring quality of the one-time formed concrete structure on water, ensures the appearance quality of the concrete structure, and meets the fair-faced concrete standard.

Description

Technical Field

[0001] The present invention relates to the technical field of cast-in-situ fair-faced concrete construction on water, and specifically to a segmented construction method for a cast-in-situ concrete structure of a water-based landscape platform Background Technique

[0002] The construction of a cast-in-situ concrete structure on water is different from that of a land-based structure in terms of environment. Since the bearing capacity of the bottom mud surface is difficult to accurately estimate and cannot be used as a support system for the cast-in-situ structure, it is necessary to use the structure itself as a support system for the next process. Therefore, how to effectively divide the structure and fully utilize its own bearing capacity for the construction of the next process to achieve stable support while meeting the safety and durability of the structure has become an important issue to be studied in the prior art.

[0003] The cast-in-situ concrete structure of a water-based landscape platform is generally a cast-in-situ fair-faced concrete structure on water, including the construction of a bearing platform, beams, and a structural slab. The construction of this structure on water is prone to uneven settlement during construction because the bottom silt layer cannot be used as a support system; moreover, the water-based landscape platform has high requirements for the appearance of the cast-in-situ concrete. The cast-in-situ concrete on water is a one-time formed structure, and it is necessary to ensure the appearance quality of the concrete structure and meet the fair-faced standard. If overall construction is carried out, the difficulty is relatively large, and the labor intensity of workers is too high, with a high error rate; if construction is carried out according to the conventional segmented construction method, in addition to considering the effective division of the structure and the bearing capacity, it is also necessary to consider problems such as the stability and firmness caused by the loose connection between segments due to inconsistent concrete pouring times between segments. Therefore, in order to improve the construction quality, construction efficiency, and reduce the construction cost, the construction of such projects needs to be further improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a segmented construction method for a cast-in-situ concrete structure of a water-based landscape platform to solve the problem of the support stability of the cast-in-situ concrete structure on water caused by the inability of the bottom silt layer to be used as a support system. At the same time, improve the pouring quality of the one-time formed cast-in-situ concrete on water, ensure the appearance quality of the concrete structure, and meet the fair-faced standard. The purpose of the present invention is achieved through the following technical solutions:

[0005] A segmented construction method for a cast-in-situ concrete structure of a water-based landscape platform. The cast-in-situ concrete structure of a water-based landscape platform includes a bearing platform supported by water engineering piles, beams arranged between the bearing platforms, and a structural slab arranged above the bearing platforms and the beams. The construction of the bearing platform, beams, and structural slab is carried out in stages. After the construction of the water engineering piles is completed, the bearing platform is constructed first by using the method of hoop, and after the bearing platform has a certain strength, the beams are constructed by using the bearing platform, and finally the structural slab is constructed by using the beams; specifically as follows:

[0006] Step 1. Construct the bearing platform by using the hoop method, including: installation of the bearing platform formwork and pouring of the bearing platform; the installation of the bearing platform formwork is as follows: install steel hoops outside the underwater engineering piles, then erect the bearing platform support I-beams on the steel hoops, and successively set up the bearing platform bottom formwork backing bars, bearing platform bottom formwork balance bars, bearing platform bottom formwork, bearing platform side formwork, bearing platform side formwork backing bars and the bearing platform tie rods passing through the bearing platform side formwork, and then complete the closing of the bearing platform formwork; the pouring of the bearing platform is as follows: pour the bearing platform in batches, and the last pouring of the bearing platform starts from the position where the bearing platform is at the same height as the bottom of the beam and constructs upward. The 1m length at the beam end shall be poured simultaneously with the bearing platform; and when pouring the bearing platform, a post-cast part with the same height as the thickness of the structural slab shall be reserved on the bearing platform surface as the bearing platform surface reserved layer for the structural slab steel bars to penetrate into the bearing platform during the pouring of the structural slab; construction of the beam can only be carried out when the concrete strength at the 1m position at the beam end reaches more than 75% of the designed strength;

[0007] Step 2. Construct the beam by using the bearing platform, including: installation of the beam formwork and pouring of the beam; the installation of the beam formwork: adopt suspended formwork construction. After the installation of the beam side formwork is completed, holes need to be opened on the side formwork to install PVC sleeves perpendicular to the length direction of the beam and passing through the beam for setting the bottom support nodes of the structural slab during the construction of the structural slab; the pouring of the beam: when pouring the beam, a post-cast part with the same height as the thickness of the structural slab shall be reserved on the beam surface as the beam surface reserved layer for the structural slab steel bars to penetrate into the beam during the pouring of the structural slab; construction of the structural slab can only be carried out after the concrete of the bearing platform and the beam has been poured and the concrete strength of both has reached more than 75% of the designed strength;

[0008] Step 3. Construct the structural slab by using the beam, including: installation of the structural slab formwork and pouring of the structural slab; the installation of the structural slab formwork: after the beam is installed, install horizontal support steel bars in the PVC sleeves pre-embedded on the beam side, and then erect bottom support channel steels on the horizontal support steel bars. The concave surface of the bottom support channel steel faces downward and covers the horizontal support steel bars to maintain stability. Then successively install bottom formwork backing bars and bottom formwork on the bottom support channel steels, and then carry out the binding of the structural slab steel bars; the structural slab steel bars pass through the beam surface reserved layer and the bearing platform surface reserved layer to ensure the continuity of the steel bars. Finally, pour the structural slab, and the beam surface reserved layer and the bearing platform surface reserved layer are also poured simultaneously to ensure the integrity of the structural slab and reduce the water seepage caused by the construction joints of the slab.

[0009] For the optimization in the construction of the bearing platform, during the installation process of the bearing platform formwork in Step 1: The bottom of the steel hoop is connected vertically with the top of the steel casing on the outer side of the underwater engineering pile to support the steel hoop; the bearing platform supporting I-beams are connected with the steel hoop by sitting on the brackets on both sides of the steel hoop. The bearing platform supporting I-beams are installed on both sides of each underwater engineering pile, and the bearing platform supporting I-beams are connected to each other by screws to prevent the bearing platform supporting I-beams from tipping over during use; the back ribs of the bottom formwork of the bearing platform are perpendicular to the direction of the bearing platform supporting I-beams, and the balance ribs of the bottom formwork of the bearing platform are parallel to the bearing platform supporting I-beams and are located about 1000 mm outside the bearing platform supporting I-beams to avoid local overhanging; the bottom formwork of the bearing platform is located above the back ribs of the bottom formwork of the bearing platform; after the installation of the bearing platform steel bars is completed, the side formwork of the bearing platform, the back ribs of the side formwork of the bearing platform and the tension bolts of the bearing platform are installed on the outside of the bearing platform.

[0010] Furthermore, during the pouring process of the bearing platform in Step 1: According to the bearing capacity of the steel hoop, the immersed part of the bearing platform, and the relative relationship between the beam bottom and the bearing platform, determine the number of times and height of the bearing platform's sub-pouring: When part of the bearing platform is immersed in water, first construct the concrete structure of the immersed part and raise it about 100 mm above the water surface; after the construction of the immersed concrete is completed and its strength reaches 75%, then construct the cast-in-place concrete on the upper part of the bearing platform; the bottom formwork of the bearing platform needs to be removed after the strength of the bearing platform poured for the first time reaches 100% of the design strength and before the construction of the structure slab formwork.

[0011] Furthermore, during the pouring process of the bearing platform in Step 1: To ensure that the 1 m of the beam end poured simultaneously with the bearing platform has sufficient overhanging strength, embed channel steel in the bearing platform, and use the steel-concrete structure formed by the channel steel and the 1 m of the beam end to improve the strength of the overhanging beam end of 1 m.

[0012] As an optimization in the construction of the beam, during the installation process of the beam formwork in Step 2: The beam suspended formwork construction is carried out after the construction and curing of the beam end of the bearing platform are completed. By setting the beam top suspended formwork I-beam perpendicular to the beam direction above the 1 m of the beam end, and then connecting the beam top suspended formwork I-beam with the beam bottom supporting I-beam through high-strength screws. The beam bottom supporting I-beam is consistent with the length direction of the beam. The beam top suspended formwork I-beam extends about 500 mm on both sides of the beam, and the high-strength screws are installed at the ends of the beam top suspended formwork I-beam extending on both sides of the beam; after setting the appropriate height according to the beam height, tighten and fix the high-strength screws; then install the beam bottom back ribs, the beam bottom formwork and the beam side formwork on the beam bottom supporting I-beam in sequence to form the formwork for the beam; leave a space of not less than 100 mm between the beam bottom I-beam and the edge of the bearing platform for easy removal later; the beam bottom formwork can only be removed after the concrete strength reaches 100% of the design strength.

[0013] As an optimization in the construction of the structure slab, during the installation process of the structure slab formwork in Step 3: Install φ25 steel bars as horizontal support steel bars in the PVC sleeves embedded on the side of the beam, and the φ25 steel bars extend out of both the front and back sides of the beam.

[0014] The present invention adopts a method of constructing the structure in stages, effectively solving the special environment where the water structure is located and it is difficult to have a stable support system. The method of using the completed underwater engineering piles as the hoop for construction is selected, and a construction process is decomposed into multiple construction processes, greatly improving the quality and safety of construction. During the construction of the bearing platform, the completed engineering piles are used to transfer the construction load; during the construction of the beam, the completed bearing platform is used to transfer the construction load; during the construction of the slab, the completed beam is used to transfer the construction load. The support system for each process is effective and can be calculated and controlled. Generally, the appearance of the water structure is the same as that of fair-faced concrete without any decorative treatment. However, through a good support system, the present invention ensures the forming quality of the concrete and can effectively achieve the same effect as fair-faced concrete. For water structures, when it is difficult for the silt layer to effectively serve as a bearing layer, this method has strong guiding significance.

[0015] The beneficial effects of the invention are as follows:

[0016] 1) The construction method of the present invention solves the problem of uneven settlement of the structure during construction caused by the inability of the underwater silt layer to serve as a support system for the cast-in-place concrete structure on water.

[0017] 2) By improving the concrete construction process, the present invention achieves the precondition of using its own structure for the construction of the next process.

[0018] 3) By adjusting the construction process, the present invention ensures the progress of key work and improves the overall construction progress.

[0019] 4) By dividing the flow segments, the present invention improves the turnover efficiency of the construction flow, reduces the input of construction turnover materials, and reduces the construction cost.

[0020] 5) Through the above construction, the cast concrete can achieve a fair-faced effect and a one-time forming effect. Description of the Drawings

[0021] The following further details the present invention in conjunction with the drawings and embodiments:

[0022] Figure 1 It is a schematic cross-sectional view of the construction support of a single-pile bearing platform of the structure of the present invention;

[0023] Figure 2 It is a schematic cross-sectional view of the construction support of a multi-pile bearing platform of the structure of the present invention;

[0024] Figure 3 It is a schematic plan view of the construction support of a single-pile bearing platform of the structure of the present invention;

[0025] Figure 4Schematic sectional view of the beam construction support of the structure of the present invention;

[0026] Figure 5 Schematic plan view of the beam construction support of the structure of the present invention;

[0027] Figure 6 Schematic sectional view of the structural slab construction support of the structure of the present invention.

[0028] Reference numerals in the attached drawings: 1. Pile for water project; 2. Cap; 3. Steel hoop; 4. I-beam for cap support; 5. Balancing rib for bottom formwork of cap; 6. Back rib for bottom formwork of cap; 7. Bottom formwork of cap; 8. Tie rod for cap; 9. Back rib for side formwork of cap; 10. Side formwork of cap; 11. I-beam for beam bottom support; 12. Back rib for beam bottom; 13. Bottom formwork of beam; 14. I-beam for suspended formwork at beam top; 15. High-strength screw; 16. Beam; 17. PVC casing; 18. Horizontal support steel bar; 19. Channel steel for slab bottom support; 20. Back rib for slab bottom; 21. Bottom formwork of slab; 22. Structural slab. 1000 represents 1000 mm. Detailed implementation manners

[0029] Embodiment 1

[0030] To make the technical means, innovative features, achieved purposes and effects of the present invention easy to understand, the present invention is further described below.

[0031] The embodiments described herein are specific specific implementation manners of the present invention and are used to illustrate the concept of the present invention. They are all explanatory and exemplary and should not be construed as limiting the implementation manners of the present invention and the scope of the present invention. Except for the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the content disclosed in the claims and the specification of the present application. These technical solutions include technical solutions that make any obvious substitutions and modifications to the embodiments described herein.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] A segmented construction method for a cast-in-place concrete structure of a water landscape platform. The cast-in-place concrete structure of the water landscape platform includes a bearing platform 2 supported by water engineering piles 1, a beam 16 arranged between the bearing platforms, and a structural slab 22 arranged on the upper parts of the bearing platform and the beam. The construction of the bearing platform 2, the beam 16, and the structural slab 22 is carried out in stages. After the construction of the water engineering piles 1 is completed, the bearing platform 2 is constructed first by using the method of hoop. After the bearing platform 2 has a certain strength, the beam 16 is constructed by using the bearing platform, and finally the structural slab 22 is constructed by using the beam. Specifically as follows:

[0035] Step 1: According to the structural drawings, count the single-pile bearing platforms and multi-pile bearing platforms respectively. The single-pile bearing platform is supported by two or more water engineering piles 1 as balance supports, and the multi-pile bearing platform is supported by the water engineering piles 1 of the multi-pile bearing platform itself. Steel hoops 3 are installed on the water engineering piles. The construction of the bearing platform by using the method of hoop includes: the installation of the bearing platform formwork and the pouring of the bearing platform, as Figure 1 , 2 shown in Figures 3.

[0036] The installation of the bearing platform formwork is as follows: Steel hoops 3 are installed on the outer side of the water engineering piles 1. The bottom of the steel hoops 3 is connected up and down with the top of the steel casing on the outer side of the water engineering piles 1 to hold the steel hoops and ensure that the hoops will not slide down. Then, bearing platform support I-beams 4 are erected on the steel hoops 3. The bearing platform support I-beams 4 are connected with the steel hoops 3 by sitting on the brackets on both sides of the steel hoops. Bearing platform support I-beams 4 are installed on both sides of each water engineering pile 1, and the bearing platform support I-beams are connected to each other by screws. Then, a bearing platform bottom formwork backing 6, a bearing platform bottom formwork balance strip 5, a bearing platform bottom formwork 7, a bearing platform side formwork 10, a bearing platform side formwork backing 9, and a bearing platform tie rod 8 passing through the bearing platform side formwork 10 are erected on the bearing platform support I-beams 4 in sequence to complete the formwork closing of the bearing platform. The bearing platform bottom formwork backing 6 is perpendicular to the direction of the bearing platform support I-beams 4, and the bearing platform bottom formwork balance strip 5 is parallel to the bearing platform support I-beams 4 and is located 1000 mm outside the bearing platform support I-beams 4, so that the backing of the overhanging pile above has two support points: point 1 - I-beam, point 2 - balance strip. The bearing platform bottom formwork 7 is located above the bearing platform bottom formwork backing 6; after the installation of the bearing platform steel bars is completed, the bearing platform side formwork 10, the bearing platform side formwork backing 9, and the bearing platform tie rod 8 are installed on the outside of the bearing platform.

[0037] The casting of the bearing platform is as follows: The bearing platform is cast in multiple times. According to the bearing capacity of the steel hoop, the immersed part of the bearing platform, and the relative relationship between the beam bottom and the bearing platform, determine the number of times and height of the multiple casting of the bearing platform: When part of the bearing platform is immersed in water, first construct the concrete structure of the immersed part and raise it 100 mm above the water surface; after the construction of the immersed concrete is completed and its strength reaches 75%, then construct the cast-in-place concrete on the upper part of the bearing platform; the last casting of the bearing platform starts from the position where the bearing platform is at the same height as the beam bottom and constructs upward. The 1 m length at the beam end should be cast simultaneously with the bearing platform; and when casting the bearing platform, a post-cast part with the same height as the structural slab thickness needs to be reserved on the bearing platform surface as the bearing platform surface reserved layer for the insertion of the structural slab steel bars into the bearing platform during the casting of the structural slab; the construction of the beam can only start when the concrete strength at 1 m from the beam end reaches more than 75% of the design strength. To ensure that the 1 m at the beam end cast simultaneously with the bearing platform has sufficient overhanging strength, channel steel is buried in the bearing platform, and the steel-concrete structure formed by the channel steel and the 1 m at the beam end is used to improve the strength of the 1 m overhanging beam end. The bottom formwork of the bearing platform needs to be removed after the strength of the bearing platform cast for the first time reaches 100% of the design strength and before the construction of the structural slab formwork.

[0038] Step 2. The construction of the beam using the bearing platform includes: the installation of the beam formwork and the casting of the beam, as Figure 4 , 5 shown.

[0039] The installation of the beam formwork: The hanging formwork construction is adopted (especially suitable for beams not less than 6 m). The beam hanging formwork construction is carried out after the construction and curing of the beam end of the bearing platform. By setting two groups of beam top hanging formwork I-beams 14 perpendicular to the beam direction above the 1 m at the beam end, and then connecting the beam top hanging formwork I-beams 14 with the beam bottom support I-beams 11 through high-strength screws 15. The beam bottom support I-beams 11 are in the same direction as the length of the beam. The beam top hanging formwork I-beams 14 extend about 500 mm on both sides of the beam. The high-strength screws 15 are installed at the ends where the beam top hanging formwork I-beams 14 extend on both sides of the beam; after setting the appropriate height according to the beam height, tighten and fix the high-strength screws; then install the beam bottom backing 12, the beam bottom formwork 13 and the beam side formwork on the beam bottom support I-beams 11 in sequence to form the formwork for the beam. After the installation of the beam side formwork is completed, holes need to be opened on the side formwork to install PVC sleeves 17 perpendicular to the beam length direction and penetrating the beam (pre-embed the PVC sleeves in advance according to the slab thickness, the bottom formwork thickness of the slab, the height of the slab bottom backing, and the thickness of the slab bottom support channel steel) for the support of the slab bottom during the construction of the structural slab. In this embodiment: When setting the beam top hanging formwork I-beams 14 at the upper part of the beam end, 2 are set at each end, and there are a total of 16 connection points with the lower beam bottom support I-beams 11, 4 at each node, and all nodes are connected by high-strength screws. The beam bottom support I-beams and the edge of the bearing platform reserve a space of not less than 100 mm for easy removal later.

[0040] Pouring of the beam: When pouring the beam, a post-cast part with the same height as the thickness of the structural slab needs to be reserved on the beam surface as the beam surface reserved layer for the insertion of the structural slab steel bars into the beam during the pouring of the structural slab; construction of the structural slab can only be carried out after the concrete in the bearing platform and the beam has been poured and the concrete strength has reached more than 75% of the designed strength; the formwork at the bottom of the beam 14 can only be removed after the concrete strength reaches 100% of the designed strength.

[0041] Step 3. Using the beam for the construction of the structural slab includes: the installation of the structural slab formwork and the pouring of the structural slab, as Figure 6 shown. After the beam is installed, horizontal support steel bars 18 (φ25 steel bars) are installed in the pre-embedded PVC sleeves 17 on the sides of the beam. The horizontal support steel bars extend 150 mm out of both sides of the beam and are grouped in pairs. Every two PVC sleeves form a group, and the PVC sleeves in the same group are spaced 100 m apart, and the intervals between groups are 2 m. On the horizontal support steel bars 18, bottom support channel steels 19 are erected. The concave surface of the bottom support channel steels 19 faces downward and covers the horizontal support steel bars 18 and is welded to the horizontal support steel bars. To ensure the convenient installation and disassembly of the channel steels, a spacing of 2 - 3 cm needs to be reserved between the channel steels and the outer edge of the beam during cutting, which is convenient for formwork removal. Then, bottom formwork backing strips 20 and bottom formwork 21 are successively installed on the bottom support channel steels 19, and then the steel bars of the structural slab are tied; the steel bars of the structural slab pass through the beam surface reserved layer and the bearing platform surface reserved layer to achieve good bonding, and finally the structural slab is poured, and the beam surface reserved layer and the bearing platform surface reserved layer are also poured simultaneously. The structural slab formwork extends 10 mm into the beam, and double-sided tape is pasted on the joint surface to prevent concrete leakage at this joint. The upper parts of the structural slab, the beam, and the bearing platform are all poured at one time. When the concrete strength of the structural slab reaches 100% of the designed strength, the bottom support can be removed. When removing, a disk buckle frame or a working ship is selected for removal. After the formwork is removed, the 10 mm deep and 15 mm high groove at the interface of the beam and the slab is filled with cement mortar.

[0042] This method uses the bearing capacity of the structure itself. After decomposing the construction load and the structure's own load during the structure construction stage, it effectively transfers them to the load-bearing members, effectively ensuring the stability of the structure support system and construction safety. Through a stable support system, there is an extremely stable effect on the formwork shaping, so that the appearance of the concrete reaches the fair-faced concrete effect. Since the concrete on the water is often in a smooth surface effect and there is no decoration on the outer finish, this support method meets the construction requirements of the smooth concrete on the water. At the same time, the construction flow segments are reasonably set to reduce the input of turnover materials while ensuring the smooth progress of the construction period.

[0043] The above embodiments are only partial embodiments of the present invention and do not cover all of the present invention. Based on the above embodiments and the accompanying drawings, those skilled in the art can obtain more embodiments without creative efforts. Therefore, all such embodiments obtained without creative efforts should be included within the scope of protection of the present invention.

Claims

1. A segmented construction method for a cast-in-place concrete structure of a water landscape platform. The cast-in-place concrete structure of the water landscape platform includes a bearing platform (2) supported by underwater engineering piles (1), a beam (16) arranged between the bearing platforms, and a structural slab (22) arranged above the bearing platform and the beam. It is characterized in that: The construction of the bearing platform (2), beam (16) and structural slab (22) is carried out in stages. After the construction of the underwater engineering piles (1) is completed, the bearing platform (2) is constructed first by using the method of hoop, then the beam (16) is constructed by using the bearing platform, and finally the structural slab (22) is constructed by using the beam. Specifically as follows: Step 1: The construction of the bearing platform by using the method of hoop includes: the installation of the bearing platform formwork and the pouring of the bearing platform. The installation of the bearing platform formwork is as follows: install the steel hoop (3) outside the underwater engineering piles (1), then erect the bearing platform support I-beam (4) on the steel hoop (3), and successively erect the bottom formwork backing strip (6), bottom formwork balance strip (5), bottom formwork of the bearing platform (7), side formwork of the bearing platform (10), side formwork backing strip (9) and the bearing platform tie rod (8) passing through the side formwork of the bearing platform (10) on the bearing platform support I-beam (4), and then complete the closing of the formwork of the bearing platform. The pouring of the bearing platform is as follows: pour the bearing platform in stages, and the last pouring of the bearing platform starts from the position at the same height as the bottom of the beam and constructs upward, and pour the 1m length at the beam end and the bearing platform at the same time. And when pouring the bearing platform, a post-cast part with the same height as the thickness of the structural slab should be reserved on the bearing platform surface as the bearing platform surface reserved layer. When the concrete strength at the 1m position at the beam end reaches more than 75% of the design strength, the construction of the beam is carried out; Step 2: The construction of the beam by using the bearing platform includes: the installation of the beam formwork and the pouring of the beam. The installation of the beam formwork: adopt the suspended formwork construction. After the installation of the side formwork of the beam is completed, open holes in the side formwork and install the PVC sleeve (17) perpendicular to the length direction of the beam and passing through the beam for the support of the bottom of the slab during the construction of the structural slab. The pouring of the beam: when pouring the beam, a post-cast part with the same height as the thickness of the structural slab should be reserved on the beam surface as the beam surface reserved layer. When the concrete of both the bearing platform and the beam is poured and the concrete strength of both reaches more than 75% of the design strength, the construction of the structural slab is carried out; Step 3: The construction of the structural slab by using the beam includes: the installation of the structural slab formwork and the pouring of the structural slab. After the beam is installed, install the horizontal support steel bars (18) in the pre-embedded PVC sleeves (17) on the side of the beam, then erect the bottom support channel steel (19) on the horizontal support steel bars (18), with the concave surface of the bottom support channel steel (19) facing downwards and covering the horizontal support steel bars (18), and then successively install the bottom formwork backing strip (20) and the bottom formwork (21) on the bottom support channel steel (19), and then carry out the binding of the steel bars of the structural slab. The steel bars of the structural slab pass through the beam surface reserved layer and the bearing platform surface reserved layer, and finally pour the structural slab, and the beam surface reserved layer and the bearing platform surface reserved layer are also poured at the same time.

2. The segmented construction method of the cast-in-place concrete structure for the water landscape platform according to claim 1, characterized in that: During the installation of the pedestal formwork in step 1: the bottom of the steel hoop (3) is connected to the top of the steel casing outside the water engineering pile (1) up and down, thereby supporting the steel hoop; the pedestal support I-beam (4) is connected to the steel hoop (3) by sitting on the brackets on both sides of the steel hoop, and the pedestal support I-beam (4) is installed on both sides of each water engineering pile (1), and the pedestal support I-beams are connected to each other by screws, the pedestal bottom formwork back rib (6) is perpendicular to the pedestal support I-beam (4), the pedestal bottom formwork balance rib (5) is parallel to the pedestal support I-beam (4) and is located outside the pedestal support I-beam (4); the pedestal bottom formwork (7) is located on the pedestal bottom formwork back rib (6); after the pedestal steel bars are installed, the pedestal side formwork (10), the pedestal side formwork back rib (9) and the pedestal tension screws (8) are installed on the outside of the pedestal.

3. The segmented construction method of the cast-in-place concrete structure for the water landscape platform according to claim 1, characterized in that: During the pouring of the cap in step 1: the number of times and height of the cap to be poured in stages are determined according to the bearing capacity of the steel hoop (3), the submerged part of the cap, and the relative relationship between the beam bottom and the cap: when the cap is partially submerged, the concrete structure of the submerged part is constructed first and is 100 mm above the water surface; after the submerged concrete construction is completed and its strength reaches 75%, the cast-in-place concrete of the upper part of the cap is constructed; the cap bottom formwork (7) needs to be removed after the strength of the cap poured for the first time reaches 100% of the design strength and before the construction of the structural slab.

4. The segmented construction method of the cast-in-place concrete structure for the water landscape platform according to claim 1, characterized in that: During the pouring of the pedestal in step 1: channel steel is buried in the pedestal, and a steel-concrete structure is formed using the channel steel and 1m of the beam end.

5. The segmented construction method of the cast-in-place concrete structure of the water landscape platform according to claim 1, characterized in that: During the installation of the beam formwork in step 2: the beam hanging formwork is constructed after the beam end of the pedestal is constructed and maintained. A beam top hanging formwork I-beam (14) perpendicular to the beam direction is arranged 1m above the beam end, and then the beam top hanging formwork I-beam (14) is connected to the beam bottom support I-beam (11) through a high-strength screw (15). The beam bottom support I-beam (11) is consistent with the length direction of the beam. The beam top hanging formwork I-beam (14) extends out of both sides of the beam. The high-strength screw (15) is installed on the ends of the beam top hanging formwork I-beam (14) extending out of both sides of the beam. After setting a suitable height according to the beam height, the high-strength screw (15) is fastened and fixed. Then, the beam bottom back rib (12), the beam bottom formwork (13) and the beam side formwork are sequentially installed on the beam bottom support I-beam (11) to close the beam. The beam bottom formwork (13) can only be removed after the concrete strength reaches 100% of the design strength.

6. The segmented construction method of the cast-in-place concrete structure for the water landscape platform according to claim 1, characterized in that: During the installation of the structural plate formwork in step 3: φ25 steel bars are installed in the PVC sleeves (17) pre-buried on the beam side as horizontal support steel bars (18), and the φ25 steel bars extend out of the front and rear sides of the beam.

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