High-speed railway station building overhead layer and comprehensive pipe gallery synchronous construction method

Abstract

The application provides a high-speed railway station building overhead layer and comprehensive pipe gallery synchronous construction method, which comprises the following steps: S1, a formwork support system is erected in a non-main beam area below the overhead layer and the comprehensive pipe gallery, and the comprehensive pipe gallery floor concrete in the non-main beam area is poured; S2, a formwork support system is erected in the main beam of the overhead layer, the secondary beam of the non-comprehensive pipe gallery area and the plate area, and the main beam, the secondary beam of the non-comprehensive pipe gallery area and the plate concrete are poured; S3, the comprehensive pipe gallery post-pouring belt floor concrete under the main beam is poured; and S4, a formwork support system is erected in the comprehensive pipe gallery column, the shear wall, the overhead layer secondary beam and the plate area, and the comprehensive pipe gallery column, the shear wall, the overhead layer secondary beam and the plate concrete in the comprehensive pipe gallery area are poured. The construction method of the application carries out the normal construction of the overhead layer and the comprehensive pipe gallery concrete, synchronously carries out the overhead layer and the comprehensive pipe gallery concrete structure construction, ensures the installation and meets the construction period requirement.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a method for the simultaneous construction of the elevated floor of a high-speed railway station and an integrated utility tunnel. Background Technology

[0002] Currently, the conventional construction of elevated floors and integrated utility tunnels in high-speed railway stations employs a reverse construction process. One reverse construction method involves first constructing the beams and slabs of the elevated floor. After the elevated floor concrete is poured and meets the demolding strength requirements, the formwork and formwork support frames are removed. Then, the formwork support frames are erected for the construction of the beams, slabs, hanging columns, and side walls of the integrated utility tunnel below the elevated floor. However, this process requires waiting until the elevated floor concrete strength meets the demolding conditions before demolding and then erecting a second set of formwork support frames, resulting in a long construction period that cannot meet the on-site schedule requirements. Another reverse construction method uses steel gantry frames as the formwork support system above the track, with other formwork support methods the same as in the first method. The construction of the formwork support system above the track and the track laying below are carried out simultaneously, resulting in overlapping construction and significant safety risks. Furthermore, the large span gantry frames use large-sized steel profiles, leading to increased construction costs.

[0003] The existing technology for constructing elevated floors and integrated utility tunnels using reverse construction techniques has problems that cannot guarantee construction safety and construction period requirements. People in the art have been looking for solutions. Summary of the Invention

[0004] The purpose of this invention is to provide a method for the simultaneous construction of elevated floors and integrated utility tunnels in high-speed railway stations, in order to solve the problem that the existing technology of using reverse construction process for elevated floors and integrated utility tunnels cannot guarantee the requirements of construction safety and construction period.

[0005] To solve the above-mentioned technical problems, the present invention provides a method for simultaneous construction of the elevated floor and integrated utility tunnel of a high-speed railway station, the method comprising the following steps:

[0006] S1: Erect the formwork support system for the non-main beam area under the elevated floor and integrated utility tunnel, and pour concrete for the floor slab of the integrated utility tunnel in the non-main beam area.

[0007] S2: Erect the formwork support system for the main beams of the elevated floor, the secondary beams and slabs in the non-integrated utility tunnel area, and carry out concrete pouring for the main beams, secondary beams and slabs in the non-integrated utility tunnel area.

[0008] S3: Concrete pouring of the floor slab of the integrated utility tunnel under the main beam;

[0009] S4: Erect the formwork support system for the columns, shear walls, elevated beams and slabs of the integrated utility tunnel, and pour concrete for the columns, shear walls and elevated beams and slabs of the integrated utility tunnel.

[0010] S5: After the elevated layer concrete strength reaches the design strength and the predetermined age, the elevated layer is prestressed tensioned for a predetermined time.

[0011] Optionally, in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method, in S1, the template support system erected under the non-main beam area of the elevated layer and comprehensive pipe gallery comprises the following sub-steps:

[0012] The template support frame is erected to the lower part of the comprehensive pipe gallery floor based on the track bearing layer concrete structure;

[0013] The template and steel bar installation of the comprehensive pipe gallery floor are performed.

[0014] Optionally, in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method, in S2, the template support system erected in the main beam, non-comprehensive pipe gallery area secondary beam and plate area of the elevated layer comprises the following sub-steps:

[0015] The template support frame is erected to the bottom of the elevated layer based on the track bearing layer concrete structure;

[0016] The template and steel bar installation of the main beam, non-comprehensive pipe gallery area secondary beam and plate are performed.

[0017] Optionally, in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method, in S4, the process of erecting the template support system of the comprehensive pipe gallery hanging column, shear wall, elevated layer secondary beam and plate area comprises the following sub-steps:

[0018] The template support frame is erected to the elevated layer based on the comprehensive pipe gallery floor;

[0019] The template and steel bar installation of the comprehensive pipe gallery hanging column, shear wall and elevated layer secondary beam and plate are performed.

[0020] Optionally, in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method, step S5 comprises the following sub-steps:

[0021] It is detected that the elevated layer concrete strength reaches the design strength and is in the design strength for at least seven days;

[0022] The elevated layer is prestressed tensioned for three days.

[0023] Optionally, in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method, the following steps are further included:

[0024] S6: The floor at the template support frame hole opening of the comprehensive pipe gallery area is sealed.

[0025] In the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method provided by the application, the high-speed rail station building elevated layer and comprehensive pipe gallery concrete are subjected to normal construction, and the high-speed rail station building elevated layer and comprehensive pipe gallery concrete structure construction is simultaneously performed, so that the construction time is reduced; meanwhile, the formwork support system only needs to be erected once, the second erection of the formwork support frame is saved compared with reverse construction, cross operation with other units is avoided, and the safety and construction efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description of exemplary embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which like reference characters refer to the like parts throughout the figures, and in which:

[0027] Figure 1 is a flowchart of the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method of an embodiment of the application;

[0028] Figure 2 is a schematic diagram of the execution of S1 in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method of an embodiment of the application;

[0029] Figure 3 is a schematic diagram of the execution of S2 in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method of an embodiment of the application;

[0030] Figure 4 is a schematic diagram of the execution of S3 in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method of an embodiment of the application;

[0031] Figure 5 is a schematic diagram of the execution of S4 in the high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method of an embodiment of the application. DETAILED DESCRIPTION

[0032] The high-speed rail station building elevated layer and comprehensive pipe gallery synchronous construction method provided by the application will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the application will be more apparent from the following description and claims. It should be noted that the drawings are very simplified and use non-precise proportions, and are only used to facilitate and clarify the purpose of assisting in the description of the embodiments of the application.

[0033] The application will now be described in further detail in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the application in a schematic manner, and thus only show the components related to the application.

[0034] In the description of the invention, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the invention.

[0035] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the invention, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0036] In the invention, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the invention can be understood according to the specific circumstances.

[0037] Please refer to Figures 1 to 5 , the high-speed railway station building elevated layer and comprehensive pipe gallery synchronous construction method comprises the following steps:

[0038] First, please refer to Figure 2 , execute step S1, set up the formwork support system of the non-main beam area below the elevated layer and comprehensive pipe gallery, and pour the comprehensive pipe gallery floor concrete of the non-main beam area (see Figure 2 orange part in the middle); wherein, the formwork support system of the non-main beam area below the elevated layer and comprehensive pipe gallery comprises the following sub-steps:

[0039] Set up the formwork support frame based on the rail-bearing layer concrete structure to the lower part of the comprehensive pipe gallery floor;

[0040] Perform comprehensive pipe gallery floor formwork and steel bar installation.

[0041] Next, please refer to Figure 3 , execute step S2, set up the formwork support system of the main beam, secondary beam and plate area of the non-comprehensive pipe gallery area of the elevated layer, and pour the concrete of the main beam, secondary beam and plate of the non-comprehensive pipe gallery area (see Figure 3The orange part in the middle); wherein the formwork support system of the erected elevated layer main beam, non-comprehensive pipe gallery area secondary beam and plate area comprises the following sub-steps:

[0042] The formwork support frame is erected based on the rail-bearing layer concrete structure to the bottom of the elevated layer;

[0043] The formwork and steel bar installation of the main beam, non-comprehensive pipe gallery area secondary beam and plate are performed.

[0044] Next, referring to Figure 4 , step S3 is performed to perform the concrete pouring of the main beam lower comprehensive pipe gallery post-cast strip floor (see Figure 4 the orange part in the middle).

[0045] To prevent the formwork support frame vibration from causing the cracking and collapse of the comprehensive pipe gallery floor during the main beam concrete pouring, the concrete pouring of the main beam lower comprehensive pipe gallery post-cast strip floor is performed after the main beam concrete pouring is completed.

[0046] Next, referring to Figure 5 , step S4 is performed to erect the formwork support system of the comprehensive pipe gallery hanging column, shear wall, elevated layer secondary beam and plate area, and perform the concrete pouring of the comprehensive pipe gallery area hanging column, shear wall and elevated layer secondary beam and plate (see Figure 5 the orange part in the middle); wherein the process of erecting the formwork support system of the comprehensive pipe gallery hanging column, shear wall, elevated layer secondary beam and plate area comprises the following sub-steps:

[0047] The formwork support frame is erected based on the comprehensive pipe gallery floor to the elevated layer;

[0048] The formwork and steel bar installation of the comprehensive pipe gallery hanging column, shear wall and elevated layer secondary beam and plate are performed.

[0049] Next, step S5 is performed to perform the elevated layer prestress tensioning for a predetermined time after the concrete strength of the elevated layer reaches the design strength and the predetermined age. Step S5 comprises the following sub-steps:

[0050] S51: detecting that the concrete strength of the elevated layer reaches the design strength and is in the design strength for at least seven days;

[0051] S52: performing the prestress tensioning of the elevated layer for three days.

[0052] Specifically, all the prestress beam lower supports must be removed after the prestress tensioning is completed for three days, the concrete strength reaches the design strength, and the grouting strength reaches 15 MPa.

[0053] Next, step S6 is performed to seal the floor openings of the formwork support frame of the comprehensive pipe gallery area.

[0054] AsFigure 2 The template supporting system set up in the construction method of the application comprises a template supporting device 1 and a template reinforcing device 2, wherein the template supporting device 1 comprises an adjustable bottom support 3, a conversion base 3, a disc buckle vertical rod 5, a vertical inclined rod 6, a disc buckle horizontal rod 7, a disc buckle bolt 8 and an adjustable top base 9; the template reinforcing device 2 comprises a tensioning screw rod 10, a steel pipe 11, a batten 12 and a template 13. Each component of the template supporting device 1 is fixed based on each component in the template reinforcing device 2 to form the template supporting system, and the position of each component can be referred to Figure 2 Here, no more description is given.

[0055] The high-speed railway station building elevated layer and comprehensive pipe gallery synchronous construction method of the application realizes the concrete normal construction of the elevated layer and the comprehensive pipe gallery, compared with reverse construction, the secondary setting of the template supporting frame is saved, the cross operation with other units is avoided, the safety and the construction efficiency are improved. On the other hand, under the condition that the template supporting system is safe in the normal construction, the concrete structure construction of the elevated layer and the comprehensive pipe gallery is simultaneously carried out, the construction period problem is maximally solved.

[0056] It should be noted that, for the foregoing method embodiments, in order to simply describe, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the action sequence described, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0057] The above description is only a description of the preferred embodiments of the application, and does not limit the scope of the application in any way, and any modification or modification of the application by those skilled in the art according to the above disclosure is within the protection scope of the claims.

Claims

1. A method for simultaneous construction of the elevated floor and integrated utility tunnel of a high-speed railway station, characterized in that, Includes the following steps: S1: Erect the formwork support system for the non-main beam area under the elevated floor and integrated utility tunnel, and pour concrete for the floor slab of the integrated utility tunnel in the non-main beam area. S2: Erect the formwork support system for the main beams of the elevated floor, the secondary beams and slabs in the non-integrated utility tunnel area, and carry out concrete pouring for the main beams, secondary beams and slabs in the non-integrated utility tunnel area. S3: Concrete pouring of the floor slab of the integrated utility tunnel under the main beam; S4: Erect the formwork support system for the columns, shear walls, elevated beams and slabs of the integrated utility tunnel, and pour concrete for the columns, shear walls and elevated beams and slabs of the integrated utility tunnel. S5: After the concrete strength of the elevated layer reaches the design strength and the predetermined age, the prestressing tension of the elevated layer is carried out at the predetermined time.

2. The method for simultaneous construction of the elevated floor of a high-speed railway station and the integrated utility tunnel as described in claim 1, characterized in that, In S1, the formwork support system for the non-main beam area below the elevated floor and integrated utility tunnel includes the following sub-steps: Erect a formwork support frame from the concrete structure of the track-bearing layer to the bottom of the integrated utility tunnel floor slab; Install the formwork and steel reinforcement for the floor slabs of the integrated utility tunnel.

3. The method for simultaneous construction of the elevated floor of a high-speed railway station and the integrated utility tunnel as described in claim 1, characterized in that, In S2, the formwork support system for erecting the main beams of the elevated floor, the secondary beams in the non-integrated utility tunnel area, and the slab area includes the following sub-steps: Erect a formwork support frame up to the bottom of the elevated layer, based on the concrete structure of the track-bearing layer. Install formwork and reinforcing steel bars for the main beams, secondary beams and slabs in non-integrated utility tunnel areas.

4. The method for simultaneous construction of the elevated floor of a high-speed railway station and the integrated utility tunnel as described in claim 1, characterized in that, In S4, the process of erecting the formwork support system for the integrated utility tunnel's suspended columns, shear walls, elevated multi-level beams, and slab areas includes the following sub-steps: Based on the floor slab of the integrated utility tunnel, a formwork support frame is erected up to the elevated level; Install formwork and reinforcing steel for the integrated utility tunnel's suspended columns, shear walls, and elevated multi-level beams and slabs.

5. The method for simultaneous construction of the elevated floor of a high-speed railway station and the integrated utility tunnel as described in claim 1, characterized in that, Step S5 includes the following sub-steps: The concrete strength of the elevated layer was detected to have reached the design strength and was at least seven days old at that design strength. The elevated floor underwent three days of prestressing tensioning.

6. The method for simultaneous construction of the elevated floor of a high-speed railway station and the integrated utility tunnel as described in any one of claims 1 to 5, characterized in that, It also includes the following steps: S6: Seal the floor slab at the opening of the formwork support frame in the integrated utility tunnel area.

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