Methods for controlling the pouring and prestressing of irregular curved concrete surfaces

Abstract

This invention provides a method for controlling the pouring and prestressing tensioning of irregularly shaped curved concrete. During concrete pouring, dual control is implemented based on pressure sensor readings to manage both the safety of the entire support system and the thickness of the poured concrete. If either the actual value for safety control or the concrete thickness control deviates from the theoretical value, the thickness of the poured concrete or the support columns are promptly checked. After the concrete in the irregularly shaped curved concrete shell has hardened, prestressing tensioning is performed. Pressure sensors control the axial force variation in the support columns caused by the prestressing tensioning operation within a preset range. This invention is applicable to the general construction of various curved concrete shell structures, reducing construction difficulty, improving construction efficiency and safety, and strengthening risk control during construction.

Description

Technical Field

[0001] This invention relates to a method for controlling the pouring and prestressing tensioning of irregularly shaped curved concrete surfaces. Background Technology

[0002] With social development, in addition to relatively regular concrete structures, various unconventional concrete curved shell structures are constantly emerging in the design of large public buildings. For unconventional concrete curved shell structures, the construction technology is still immature, and the thickness control precision of irregular curved surfaces is relatively low.

[0003] Furthermore, to address the uneven stress distribution and high local stress in irregularly shaped curved concrete surfaces, prestressing technology is often used to control the unfavorable tensile stress in the concrete to a low level. Currently, in most cases, this can only be explored based on the specific project conditions, resulting in significant construction difficulties. Numerous problems arise during project implementation, leading to slow progress and certain construction risks. Summary of the Invention

[0004] The purpose of this invention is to provide a method for controlling the pouring and prestressing tensioning of irregular curved concrete surfaces.

[0005] To address the above problems, this invention provides a method for controlling the pouring and prestressing tension of irregularly shaped curved concrete, comprising:

[0006] The elevation information of the top and bottom surfaces of the irregular curved concrete shell is exported using computer mapping technology. Based on the elevation information of the top and bottom surfaces of the irregular curved concrete shell, the elevation information of the support system under the irregular curved concrete shell is calculated.

[0007] Based on the elevation information of the support system, a support system is erected under the irregular curved concrete shell to be poured, and pressure sensors are installed under the support system.

[0008] After the support system is set up, the pressure sensor value is zeroed. The formwork of the irregular curved concrete shell to be poured is connected to the upper part of the support system, and the steel bars inside the irregular curved concrete shell to be poured are tied.

[0009] After cleaning the upper surface of the formwork of the irregular curved concrete shell, record the pressure sensor readings before pouring concrete; pour the concrete of the irregular curved concrete shell slowly in layers, with the time interval between each layer of concrete being less than the initial setting time of the concrete.

[0010] During concrete pouring, the entire support system is under dual control, with both safety and concrete pouring thickness controlled based on pressure sensor readings.

[0011] When the actual value of either the safety control of the entire support system or the concrete pouring thickness control is inconsistent with the theoretical value, the thickness of the poured concrete or the support poles should be checked in a timely manner.

[0012] After the concrete of the poured irregular curved concrete shell has hardened, the prestressing tensioning operation of the irregular curved concrete shell is carried out. The axial force change of the support column caused by the prestressing tensioning operation is controlled within the preset range by pressure sensors.

[0013] Furthermore, in the above method, based on the elevation information of the support system, a support system is connected under the irregular curved concrete shell to be poured, and a pressure sensor is installed under the support system, including:

[0014] The support system includes: support poles and universal U-shaped fasteners connected to the top of the support poles. The universal U-shaped fasteners are installed under the irregular curved concrete shell to be poured.

[0015] The formwork connecting the upper part of the support system to the irregular curved concrete shell to be poured includes:

[0016] The horizontal steel pipe at the bottom of the formwork of the irregular curved concrete shell to be poured is placed in the U-shaped groove of the universal U-shaped fastener.

[0017] After the support system is erected, the pressure sensor readings are zeroed. The formwork for the irregularly shaped curved concrete shell to be poured is then connected to the upper part of the support system, including:

[0018] After the support system is set up, the pressure sensor values ​​are zeroed, and the height of the universal U-shaped fasteners installed at the top of the support poles is verified before the formwork for the irregular curved concrete shell to be poured is laid.

[0019] Furthermore, in the above method, a pressure sensor is installed under the support system, including:

[0020] A single pressure sensor is applied to the pressure of a single support column.

[0021] Alternatively, multiple pressure sensors can be grouped together and placed under multiple support poles.

[0022] Furthermore, in the above method, a pressure sensor is installed under the support system, including:

[0023] A horizontal pad is installed at the bottom of the support pole;

[0024] A rubber pad layer is installed under the horizontal pad;

[0025] A pressure sensor is installed at the bottom of the rubber pad layer;

[0026] A fine sand pad is placed between the pressure sensor and the floor slab.

[0027] Furthermore, in the above method, during concrete pouring, dual control is implemented for the safety of the entire support system and the thickness of the concrete pouring, based on the values ​​from the pressure sensors. This includes:

[0028] The safety control of the entire support system is based on the pressure value of the pressure sensor, while the control of the concrete pouring thickness is based on the incremental value of the pressure sensor.

[0029] Furthermore, in the above method, the pressure values ​​of the reference pressure sensors for the safety control of the entire support system include:

[0030] The safety control level of the entire support system shall meet the following requirement:

[0031] (1-p1)F tn <F r1n <(1+p1)F tn ,

[0032] In the formula, F tn F is the theoretical value of the nth pressure sensor or pressure sensor group. r1n p1 represents the measured pressure value of the nth pressure sensor or pressure sensor group after concrete pouring, and p1 is the first percentage of deviation between the measured pressure value of the pressure sensor or pressure sensor group and the theoretical value.

[0033] Furthermore, in the above method, the theoretical value of the pressure sensor is calculated using the following formula:

[0034]

[0035] In the formula, F tn ρ is the theoretical pressure value of the nth pressure sensor or pressure sensor group, m is the number of support poles corresponding to the pressure sensor or pressure sensor group, ρ is the measured wet density of the concrete poured on site, g is the local gravitational acceleration, and t is the pressure value of the nth pressure sensor or pressure sensor group. i Let a be the thickness of the concrete to be poured on the upper part of the i-th support pole. i Let b be the center distance between the two supports on the horizontal side of the i-th support column in the plane projection. i F is the center distance between the two supports on the longitudinal direction of the i-th support column in the plane projection. n0 This represents the reading of the nth pressure sensor before the concrete is poured.

[0036] Furthermore, in the above method, the control of the concrete pouring thickness is based on the incremental values ​​of the pressure sensor, including:

[0037] For controlling the thickness of concrete pouring, the following requirement must be met:

[0038] max{(1-p2)(F tn -F n0 ),ΔF L}<F r1n -F n0 <min{(1+p2)(F tn -F n0 ),ΔF U},

[0039] In the formula, p2 is the second percentage control rate for the deviation between the incremental value of the pressure sensor or pressure sensor group and the theoretical value, which is higher than p1, ΔF L The maximum lower deviation value, ΔF U This is the maximum upper deviation value.

[0040] Furthermore, in the above method, when the actual value of either the safety control of the entire support system or the concrete pouring thickness control is inconsistent with the theoretical value, the thickness of the poured concrete or the support poles should be checked in a timely manner, including:

[0041] If the measured pressure value or incremental value is greater than the theoretical value, check whether the poured concrete is too thick, whether the formwork in the adjacent area has bulged or deformed, or whether the support poles in the adjacent area have been bent or collapsed due to other reasons.

[0042] If the measured pressure value or incremental value is less than the theoretical value, check whether the poured concrete is too thin, or whether the formwork in the adjacent area is tilted and pressing down on other formwork.

[0043] Furthermore, in the above method, controlling the axial force change of the support column caused by the prestressing tensioning construction operation within a preset range using a pressure sensor includes:

[0044] During the prestressing construction of irregular curved concrete shell structures, the connection between the universal U-shaped fasteners at the top of the support poles and the transverse steel pipes is tightened or loosened to control the force variation amplitude of the support system during the prestressing process within a specified range, i.e., satisfying the following formula:

[0045] (1-p3)F n1 <F pn <(1+p3)F n1 ,

[0046] In the formula, F pn F represents the pressure value measured by the nth pressure sensor or pressure sensor group during the prestressing process of the structure. n1 p3 represents the pressure value measured by the nth pressure sensor or pressure sensor group before the prestressing of the structure, and p3 is the first percentage of the support force control during the prestressing process.

[0047] After the prestressing tensioning is completed, the axial force of the support structure of the irregular curved concrete shell is finely adjusted to control the force variation range of the support system within a more stringent range, i.e., satisfying the following formula:

[0048] (1-p4)F n1 <F pEn <(1+p4)F n1 ,

[0049] In the formula, F pEn p4 represents the pressure value measured by the nth pressure sensor or pressure sensor group after the structure is tensioned and prestressed, and p4 is the second percentage of the support force control during the prestressing process.

[0050] Compared with existing technologies, this invention, based on the elevation information of the support system, constructs a support system under the irregular curved concrete shell to be poured, and installs pressure sensors under the support system. After the support system is constructed, the pressure sensor readings are zeroed. The formwork of the irregular curved concrete shell to be poured is connected to the upper part of the support system, and the reinforcing steel inside the irregular curved concrete shell is tied. After cleaning the upper surface of the formwork of the irregular curved concrete shell, before pouring the concrete, the pressure sensor readings are recorded. The concrete of the irregular curved concrete shell is poured slowly in layers, with a time interval between each layer of concrete pouring. The interval is less than the initial setting time of the concrete; during concrete pouring, dual control is implemented for the safety control of the entire support system and the control of the concrete pouring thickness based on the values ​​of the pressure sensor; when the actual value of either the safety control of the entire support system or the concrete pouring thickness control is inconsistent with the theoretical value, the thickness of the poured concrete or the support column is checked in a timely manner; after the concrete of the poured irregular curved surface concrete shell has hardened, the prestressing tensioning construction operation of the irregular curved surface concrete shell is carried out, and the axial force change of the support column caused by the prestressing tensioning construction operation is controlled within a preset range by the pressure sensor. This invention proposes a feasible and mature prestressed irregular curved surface concrete pouring and tensioning control technology, which can be applied to the general construction of different concrete curved surface shell structures, reducing construction difficulty, improving construction efficiency and construction safety, and strengthening the risk control of the project during the construction process. Attached Figure Description

[0051] Figure 1 This is a construction cross-sectional view of an irregular curved concrete shell according to an embodiment of the present invention;

[0052] Figure 2 This is a structural diagram of a universal U-shaped fastener according to an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of the arrangement of the support system according to an embodiment of the present invention. Detailed Implementation

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] like Figures 1 to 3 As shown, the present invention provides a method for controlling the pouring and prestressing tensioning of irregularly shaped curved concrete, comprising:

[0056] Step S1: Using computer mapping technology, export the elevation information of the top and bottom surfaces of the space where the irregular curved concrete shell 1 is located. Based on the elevation information of the top and bottom surfaces of the space where the irregular curved concrete shell 1 is located, calculate the elevation information of the support system 2 under the irregular curved concrete shell.

[0057] Step S2: Based on the elevation information of the support system, a support system is erected under the irregular curved concrete shell to be poured, and a pressure sensor is installed under the support system.

[0058] Here, while the support system is being erected, vertical components including the core tube, structural columns, and shear walls can be constructed simultaneously.

[0059] Given that the irregular curved concrete shell may not be of uniform thickness and that the bottom elevation of the irregular curved concrete shell may vary, it is easy to cause the cumulative error of the top concrete elevation of the irregular curved concrete shell. Therefore, the error of the top elevation of the support system is controlled within ±1.0mm.

[0060] Step S3: After the support system is set up, the pressure sensor value is zeroed, the formwork of the irregular curved concrete shell to be poured is connected to the upper part of the support system, and the steel bars inside the irregular curved concrete shell to be poured are tied.

[0061] Step S4: After cleaning the upper surface of the template of the irregular curved concrete shell, before pouring the concrete, record the pressure sensor reading; pour the concrete of the irregular curved concrete shell slowly in layers, with the time interval between each layer of concrete being less than the initial setting time of the concrete.

[0062] Step S5: During concrete pouring, the safety control of the entire support system and the control of the concrete pouring thickness are controlled simultaneously based on the values ​​of the pressure sensor.

[0063] Step S6: When the actual value of either the safety control of the entire support system or the concrete pouring thickness control is inconsistent with the theoretical value, the thickness of the poured concrete or the support pole should be checked in a timely manner.

[0064] Step S7: After the concrete of the poured irregular curved concrete shell has hardened, the prestressing tensioning operation of the irregular curved concrete shell is carried out. The axial force change of the support column caused by the prestressing tensioning operation is controlled within a preset range by a pressure sensor.

[0065] Here, the present invention proposes a feasible and mature prestressed irregular curved surface concrete pouring and tension control technology, which can be applied to the general construction of different concrete curved surface shell structures, reducing construction difficulty, improving construction efficiency and construction safety, and strengthening risk control of the project during the construction process.

[0066] like Figure 2 and 3 As shown, in one embodiment of the method for controlling the pouring and prestressing of irregular curved concrete of the present invention, step S2, based on the elevation information of the support system, connects the support system under the irregular curved concrete shell to be poured, and sets a pressure sensor under the support system, including:

[0067] The support system 2 includes a support pole 21 and a universal U-shaped fastener 22 connected to the top of the support pole. The universal U-shaped fastener is installed under the irregular curved concrete shell to be poured.

[0068] In one embodiment of the method for controlling the pouring and prestressing of irregular curved concrete of the present invention, step S3, connecting the template of the irregular curved concrete shell to be poured to the upper part of the support system, includes:

[0069] The horizontal steel pipe at the bottom of the template of the irregular curved concrete shell to be poured is placed in the U-shaped groove of the universal U-shaped fastener 22.

[0070] Here, universal U-shaped fasteners are installed at the top of the support poles of the support system, such as... Figure 2 As shown. This universal U-shaped fastener can meet the requirements for supporting the horizontal steel pipes arranged under the concrete formwork at different angles, and can provide universal support to match the geometry of the curved concrete shell.

[0071] In one embodiment of the method for controlling the pouring and prestressing of irregular curved concrete of the present invention, step S3, after the support system is erected, the pressure sensor value is zeroed, and a template for the irregular curved concrete shell to be poured is connected to the upper part of the support system, including:

[0072] After the support system is set up, the pressure sensor values ​​are zeroed, and the height of the universal U-shaped fasteners installed at the top of the support poles is verified before the formwork for the irregular curved concrete shell to be poured is laid.

[0073] In one embodiment of the method for controlling the pouring and prestressing tension of irregular curved concrete of the present invention, step S2, which involves setting a pressure sensor under the support system, includes:

[0074] A single pressure sensor is placed under a single support column;

[0075] Alternatively, multiple pressure sensors can be grouped together and placed under multiple support poles.

[0076] Here, vertical pressure sensors are installed under the support pillars of the support system to monitor the changes in the forces acting on the support system during construction processes such as concrete pouring and prestressing tensioning, as shown in the figure. Figure 1 and 3 As shown. Pressure sensors under the support poles should be evenly distributed at multiple points. A single pressure sensor can be used to measure the pressure of a single support pole; alternatively, multiple pressure sensors can be grouped together to measure the pressure of multiple poles. When pressure testing multiple support poles, the area divided for each support pole should preferably be square or rectangular, with pressure sensors placed at the four corners.

[0077] In one embodiment of the method for controlling the pouring and prestressing tension of irregular curved concrete of the present invention, step S2, which involves setting a pressure sensor under the support system, includes:

[0078] A horizontal pad 4 is installed at the lower part of the support pole 21;

[0079] A rubber pad layer 5 is installed under the horizontal pad;

[0080] A pressure sensor 6 is installed at the bottom of the rubber pad layer 5;

[0081] A fine sand cushion layer 7 is placed between the pressure sensor 6 and the floor slab 8.

[0082] Here, as Figure 3 As shown, multiple support poles rest on the pressure sensor via a horizontal pad. Force is transmitted between the pressure sensor and the horizontal pad, and between the pressure sensor and the floor slab, respectively, through rubber pads and fine sand pads. The rubber pads and fine sand pads are used to level the force transmission surface, ensuring that the pressure sensor is subjected to vertical and uniform force.

[0083] In one embodiment of the method for controlling the pouring and prestressing tension of irregular curved surface concrete of the present invention, step S5 involves performing dual control on the safety control of the entire support system and the control of the concrete pouring thickness based on the values ​​of the pressure sensor during concrete pouring, including:

[0084] The safety control of the entire support system is based on the pressure value of the pressure sensor, while the control of the concrete pouring thickness is based on the incremental value of the pressure sensor.

[0085] In one embodiment of the method for controlling the pouring and prestressing tension of irregular curved concrete of the present invention, the pressure value of the reference pressure sensor for the safety control of the entire support system includes:

[0086] The safety control level of the entire support system shall meet the following requirement:

[0087] (1-p1)F tn <F r1n <(1+p1)F tn ,

[0088] In the formula, F tn F is the theoretical value of the nth pressure sensor. r1n p1 represents the measured pressure value of the nth pressure sensor after concrete pouring, and p1 is the deviation control percentage between the measured pressure value and the theoretical value of the pressure sensor.

[0089] Here, p1 can be set to 2% based on the actual needs of the project.

[0090] In one embodiment of the method for controlling the pouring and prestressing tension of irregular curved concrete of the present invention, during concrete pouring, the pressure value of the pressure sensor should be monitored at all times, and the theoretical value of the pressure sensor is calculated according to the following formula:

[0091]

[0092] In the formula, F tn ρ is the theoretical pressure value of the nth pressure sensor or pressure sensor group, m is the number of support poles corresponding to the pressure sensor or pressure sensor group, ρ is the measured wet density of the concrete poured on site, g is the local gravitational acceleration, and t is the pressure value of the nth pressure sensor or pressure sensor group. i Let a be the thickness of the concrete to be poured on the upper part of the i-th support pole. i Let b be the center distance between the two supports on the horizontal side of the i-th support column in the plane projection. i F is the center distance between the two supports on the longitudinal direction of the i-th support column in the plane projection. n0 This represents the reading of the nth pressure sensor before the concrete is poured.

[0093] In one embodiment of the method for controlling the pouring and prestressing of irregular curved surface concrete according to the present invention, the control of the concrete pouring thickness is based on the incremental value of the pressure sensor, including:

[0094] For controlling the thickness of concrete pouring, the following requirement must be met:

[0095] max{(1-p2)(F tn -F n0 ),ΔF L}<F r1n -Fn0 <min{(1+p2)(F tn -F n0 ),ΔF U},

[0096] In the formula, p2 is the percentage deviation between the incremental value of the pressure sensor and the theoretical value of the pressure sensor, which should be slightly higher than p1, ΔF L The maximum lower deviation value, ΔF U This is the maximum upper deviation value.

[0097] Here, p2 can be set to 2.5% based on the actual needs of the project.

[0098] In one embodiment of the method for controlling the pouring and prestressing of irregular curved concrete of the present invention, step S6, when any actual value of the safety control of the entire support system and the control of the concrete pouring thickness is inconsistent with the theoretical value, timely investigation is carried out on the pouring thickness of the concrete or the support column, including:

[0099] If the measured pressure value or incremental value is greater than the theoretical value, check whether the poured concrete is too thick, whether the formwork in the adjacent area has bulged or deformed, or whether the support poles in the adjacent area have been bent or collapsed due to other reasons.

[0100] If the measured pressure value or incremental value is less than the theoretical value, check whether the poured concrete is too thin, or whether the formwork in the adjacent area is tilted and pressing down on other formwork.

[0101] In one embodiment of the method for controlling the pouring and prestressing tensioning of irregular curved concrete of the present invention, step S7, controlling the change in axial force of the support column caused by the prestressing tensioning operation within a preset range using a pressure sensor, includes:

[0102] During the prestressing construction of irregular curved concrete shell structures, the connection between the universal U-shaped fasteners at the top of the support poles and the transverse steel pipes is tightened or loosened to control the force variation amplitude of the support system during the prestressing process within a specified range, i.e., satisfying the following formula:

[0103] (1-p3)F n1 <F pn <(1+p3)F n1 ,

[0104] In the formula, F pn F represents the pressure value measured by the nth pressure sensor or pressure sensor group during the prestressing process of the structure. n1 p3 represents the pressure value measured by the nth pressure sensor or pressure sensor group before the structure is tensioned and prestressed, and p3 is the percentage of the support force control during the prestressing process.

[0105] Here, p3 can be twice p2, or p3 can be set according to the actual needs of the project.

[0106] After the concrete of the poured irregular curved concrete shell has hardened, the prestressing tensioning of the structure is carried out. Before tensioning the prestressing tendons inside the irregular curved concrete shell, the support system under the irregular curved concrete shell can be removed according to design requirements. If the support system is not removed, it is necessary to control the axial force changes of the support columns caused by prestressing tensioning.

[0107] Since the structure will deform after tensioning and prestressing, it is necessary to adjust the height of the support poles according to the deformation of the structure to ensure that the entire structure is still under uniform stress.

[0108] In one embodiment of the method for controlling the pouring and prestressing of irregular curved concrete of the present invention, after controlling the force variation amplitude of the support system during the prestressing process within a specified range, the method further includes:

[0109] After the prestressing tensioning is completed, the axial force of the support structure of the irregular curved concrete shell is finely adjusted to control the force variation range of the support system within a more stringent range, i.e., satisfying the following formula:

[0110] (1-p4)F n1 <F pEn <(1+p4)F n1 ,

[0111] In the formula, F pEn p4 represents the pressure value measured by the nth pressure sensor or pressure sensor group after the structure is tensioned and prestressed, and p4 is the percentage of the support force control during the prestressing process.

[0112] Here, p4 can take the same value as p2, or p4 can be set according to the actual needs of the project.

[0113] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0114] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0115] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A method for controlling the concrete pouring and prestress tension of a special-shaped curved surface, characterized in that, The method comprises the following steps: The elevation information of the top surface and the bottom surface corresponding to the space where the special-shaped curved concrete shell is located is exported by computer mapping technology, and the elevation information of the support system under the special-shaped curved concrete shell is calculated based on the elevation information of the top surface and the bottom surface corresponding to the space where the special-shaped curved concrete shell is located; Based on the elevation information of the support system, a support system is erected under the special-shaped curved concrete shell to be cast, and a pressure sensor is arranged under the support system; After the support system is erected, the value of the pressure sensor is cleared, the formwork of the special-shaped curved concrete shell to be cast is connected to the upper part of the support system, and the steel bars in the special-shaped curved concrete shell to be cast are bound; Before the upper surface of the formwork of the special-shaped curved concrete shell is cleaned and the concrete is prepared to be cast, the reading of the pressure sensor is recorded; the concrete of the special-shaped curved concrete shell is slowly cast in layers, and the interval between the layers of the concrete is less than the initial setting time of the concrete; During the casting of the concrete, the entire support system safety control and the concrete casting thickness control are double-controlled according to the value of the pressure sensor; When the actual value of any one of the entire support system safety control and the concrete casting thickness control is inconsistent with the theoretical value, the cast concrete thickness or the support stand is timely investigated; After the cast special-shaped curved concrete shell is hardened, the structure prestress tension construction operation of the special-shaped curved concrete shell is performed, and the axial force change of the support stand caused by the prestress tension construction operation is controlled within a preset range by the pressure sensor; Based on the elevation information of the support system, a support system is connected to the special-shaped curved concrete shell to be cast, and a pressure sensor is arranged under the support system, comprising: The support system is arranged, comprising: a support stand and a universal U-shaped fastener connected to the top of the support stand, and the universal U-shaped fastener is arranged under the special-shaped curved concrete shell to be cast; The formwork of the special-shaped curved concrete shell to be cast is connected to the upper part of the support system, comprising: The horizontal steel pipe at the lower part of the formwork of the special-shaped curved concrete shell to be cast is placed in the U-shaped groove of the universal U-shaped fastener; After the support system is erected, the value of the pressure sensor is cleared, the formwork of the special-shaped curved concrete shell to be cast is connected to the upper part of the support system, comprising: After the support system is erected, the value of the pressure sensor is cleared, the height of the universal U-shaped fastener installed at the top of the support stand is checked, and then the formwork of the special-shaped curved concrete shell to be cast is laid; The pressure sensor is arranged under the support system, comprising: A single pressure sensor is arranged under a single support stand; Or a plurality of pressure sensors are arranged in groups, and the grouped pressure sensors are arranged under a plurality of support stands; During the casting of the concrete, the entire support system safety control and the concrete casting thickness control are double-controlled according to the value of the pressure sensor, comprising: The pressure value of the pressure sensor is referred to for the entire support system safety control, and the incremental value of the pressure sensor is referred to for the control of the concrete casting thickness; The pressure value of the pressure sensor is referred to for the entire support system safety control, comprising: For the safety control level of the entire support system, the following requirements are met: (1-p1)F tn <F r1n (1+p1)F tn , F tn F is the theoretical value of the nth pressure sensor or pressure sensor group, F r1n F is the measured pressure value of the nth pressure sensor or pressure sensor group after pouring concrete, and p1 is the deviation control first percentage of the measured pressure value and the theoretical value of the pressure sensor or pressure sensor group. The theoretical value of the pressure sensor is calculated according to the following formula: In the formula, F tn is the theoretical pressure value of the nth pressure sensor or pressure sensor group, m is the number of supporting vertical poles corresponding to the pressure sensor or pressure sensor group, p is the measured wet density of the cast-in-place concrete, g is the local gravity acceleration, t i is the thickness of the concrete to be cast on the upper part of the ith supporting vertical pole, a i is the center distance between the two lateral supports of the ith supporting vertical pole in the plane projection, b i is the center distance between the two longitudinal supports of the ith supporting vertical pole in the plane projection, F n0 is the reading of the nth pressure sensor before casting the concrete; The control of the concrete pouring thickness refers to the incremental value of the pressure sensor, including: For the control of the concrete pouring thickness, the following requirements are met: max{(1-p2)(F tn -F n0 ),ΔF L}<F r1n -F n0 <min{(1+p2)(F tn -F n0 ),ΔF U} wherein p2 is the deviation of the incremental value of the pressure sensor or pressure sensor group from the theoretical value controlled to a second percentage, higher than pi, AFmax L is the maximum lower deviation value, AFmax U is the maximum upper deviation value. When the actual value of any one of the whole support system safety control and the concrete pouring thickness control is inconsistent with the theoretical value, the poured concrete thickness or the support stand is promptly investigated, including: If the measured pressure value or the incremental value is greater than the theoretical value, it is investigated whether the poured concrete is too thick, or whether the formwork of the adjacent area has bulging deformation, or whether the support stand of the adjacent area has pressure bending or other reasons for collapse; If the measured pressure value or the incremental value is less than the theoretical value, it is investigated whether the poured concrete is too thin, or whether the formwork of the adjacent area has tilted and pressed other formworks.

2. The method of claim 1, wherein the method is characterized by: The pressure sensor is arranged under the support system, including: A horizontal pad is arranged at the lower part of the support stand; A rubber pad layer is arranged under the horizontal pad; A pressure sensor is arranged at the lower part of the rubber pad layer; A fine sand pad layer is arranged between the pressure sensor and the floor slab.

3. The method of claim 1, wherein the method further comprises: The change of the axial force of the support stand caused by the prestressed tension construction operation is controlled within the preset range through the pressure sensor, including: When the structural prestressed tension construction operation of the special-shaped curved concrete shell is performed, the connection between the universal U-shaped fastener at the upper part of the loose support stand and the transverse steel pipe is loosened, so that the force change amplitude of the support system during the tensioning of the prestress is controlled within a specified range, i.e. the following formula is met: (1 - p3)F n1 <F pn < (1 + p3)F n1 , In the formula, F pn F represents the pressure value measured by the nth pressure sensor or pressure sensor group during the prestressing process of the structure. n1 p3 represents the pressure value measured by the nth pressure sensor or pressure sensor group before the prestressing of the structure, and p3 is the first percentage of the support force control during the prestressing process. After the tensioning of the prestressed tension construction is completed, the support axial force of the special-shaped curved concrete shell is fine-tuned, and the force change amplitude of the support system is controlled within a more stringent range, i.e. the following formula is met: (1 - p4)F n1 <F pEn < (1 + p4)F n1 , In the formula, F pEn is the pressure value measured by the nth pressure sensor or pressure sensor group after the structure is tensioned by prestress, and p4 is the control second percentage of the supporting force during the prestress tensioning process.

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