Rapid construction technology for lifting type platform door foundation of existing high-speed rail station

Abstract

The invention belongs to the technical field of lifting type platform door installation, and particularly relates to an existing high-speed rail station lifting type platform door foundation rapid construction technology which comprises the following specific steps that S1, surveying and setting out are conducted; s2, digging holes; s3, checking a foundation pit body; s4, placing a reinforcement cage; s5, foundation concrete pouring; s6, a pre-embedded bottom plate is placed; s7, maintenance is conducted; s8, mounting a stand column base; and S9, recovering the platform surface. And a set of efficient standardized rapid construction technological process is provided for foundation construction of the lifting type platform door of the existing high-speed railway station. Standard prefabricated platform door foundation components are provided, the construction period is shortened, and the installation efficiency is improved. Aiming at the problems existing in a traditional stand column installation mode, the mechanical arm grabbing and clamping trolley is provided, the labor force of workers is relieved, and fixation of the stand column posture and rapid alignment of a stand column base and an embedded part in the installation process are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of installation of lift-type platform doors, and in particular to a rapid construction process for the foundation of a lift-type platform door of an existing high-speed railway station. Background Art

[0002] High-speed railway stations are important hubs for railway passenger transportation, and their daily operations cannot be interrupted for a long time. Therefore, when installing platform doors in an existing high-speed railway station, it is necessary to shorten the construction period as much as possible and reduce the impact on the daily operation of the station while ensuring the construction quality. At present, the traditional foundation construction process of high-speed railway station platform doors has the problems of long construction period and low efficiency.

[0003] At present, the construction process for adding platform doors to existing stations is still relatively chaotic, and no one has yet proposed a standardized process for basic construction technology.

[0004] At present, the installation of platform door columns is mostly done manually. Platform door columns are heavy and require high internal assembly precision. Manual installation may cause columns to topple over or installation holes to be misaligned, which may lead to external wear or inaccurate internal assembly relationships. This traditional column installation method consumes a lot of manpower, has low efficiency and poor reliability. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid construction process for the foundation of an existing high-speed railway station lifting platform door to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a rapid construction process for the foundation of an existing high-speed railway station lifting platform door, the specific steps of which are as follows:

[0007] S1: Measurement and setting out: measure and take the installation reference control line on the platform surface;

[0008] S2: Digging: digging the foundation pit for the road base station column;

[0009] S3: Inspection of foundation pit: After the foundation depth is in place, the depth, verticality and position of the foundation pit shall be inspected;

[0010] S4: Rebar cage placement: The rebar cage is processed centrally. After the rebar cage is inspected and qualified, it is transported to the work site and lowered. When the rebar cage is hoisted, it must be aligned with the hole position, hoisted vertically, and slowly placed into the pit to avoid collision with the hole wall;

[0011] S5: Foundation concrete pouring: Use finished concrete, the foundation concrete grade is C30, and the cast-in-place process is adopted;

[0012] S6: Pre-embedded base plate placement: Pre-embedded parts are processed and manufactured in advance and transported to the site for installation during construction;

[0013] S7: Maintenance: After the concrete is poured, the humidity and temperature of the concrete shall be controlled. The poured concrete shall be covered and watered within 12 hours and maintained in a wet state for no less than 7 days and nights.

[0014] S8: Install the column base: The platform door column is also processed and manufactured in advance, and transported to the site for installation during construction. Clean the surface of the embedded parts, place the column base on the embedded bottom plate, and make the column base and the platform plane level. Use a level to check the levelness of the upper surface of the column base steel plate in the XY directions, level the steel plate at the bottom of the column, and make the flatness ±1mm. Measure the distance between the column base and the platform edge, and the error is ±1mm. Measure the distance between the column base and the left and right bases, and the error is ±1mm. Fix the column base and the embedded floor with nuts, and protect the screw holes on the base. After the column base is installed, use H60 grouting material to grout the base gap;

[0015] S9: Restore the platform surface: After the column base is installed, start laying the floor tiles. The height of the floor tiles should be at the same level as the column base. During the tiling construction, protect the column base to prevent mortar from entering the screw holes of the base.

[0016] Preferably, the measuring method of the installation reference control line is specifically as follows:

[0017] The surveying person in charge leads the layout construction workers to lay out the baseline. The platform door centerline team starts to lay out the platform door centerline based on the baseline and drawings. The platform door installation position positioning team then starts the platform door installation position positioning and marking work, using the centerline as the reference and using standard platform door fixed installation position positioning tooling to locate the installation position.

[0018] Preferably, the dimensions of the pit dug in step S2 are: the foundation dimensions are 1.35m long×1.35m wide×1.5m deep, and the top surface of the foundation is buried at a depth of 130mm.

[0019] Preferably, in step S3, the foundation pit body inspection is specifically as follows: measuring the pit depth with a measuring rope, and the foundation pit depth should meet the design requirements; measuring the verticality of the foundation pit with a hanging rope, if it does not meet the requirements, manually repairing the holes until it meets the design requirements, and the foundation pit position inspection is carried out by the surveying personnel.

[0020] Preferably, in step S4, when the steel cage is placed in the designed position, it is tied and fixed to the existing 180 mm thick C20 reinforced concrete steel bars, and measures should be taken to prevent the steel cage from deformation during lifting, transportation and installation.

[0021] Preferably, in step S5, during the concrete pouring process, an inserted vibrating rod is used to vibrate and compact the concrete in layers, and the vibration is strengthened at the corners to control the elevation of the concrete on the top surface of the foundation, and the foundation concrete is poured continuously.

[0022] Preferably, in step S6, when the concrete pouring reaches the elevation, the embedded floor begins to be placed, and the base height is 250 mm below the platform surface and 675 mm away from the platform edge. The elevation of the top surface of the embedded floor needs to be well controlled.

[0023] Preferably, in step S7, the curing time is not less than 28 days.

[0024] Preferably, in step S9, the construction is carried out in the order of stone selection, stone laying, stone protection, paving, cleaning and finished product protection.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] Provide a set of efficient, standardized and fast construction process flow for the foundation construction of lifting platform doors in existing high-speed railway stations.

[0027] Provide standard prefabricated platform door foundation components to shorten construction period and improve installation efficiency.

[0028] Aiming at the problems existing in the traditional column installation method, a mechanical arm clamping trolley is proposed to reduce the labor of workers and realize the fixation of the column posture and the rapid alignment of the column base and embedded parts during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Standardized process flow chart for basic construction;

[0030] Figure 2 This is a schematic diagram of the standard prefabricated steel cage design;

[0031] Figure 3 for Figure 2 AA section view;

[0032] Figure 4 This is a schematic diagram of the standard prefabricated embedded floor design;

[0033] Figure 5 for Figure 4 aa cross-sectional view;

[0034] Figure 6 for Figure 4 bb cross-sectional view;

[0035] Figure 7 Design diagram for column base installation;

[0036] Figure 8 This is a schematic diagram of the design of a mechanical arm gripping trolley suitable for column base installation;

[0037] Fig. 9 A top view of the column clamped by the fixture;

[0038] Fig.10 for Fig. 9 Right view of;

[0039] Fig.11 A diagram of the fixture holding up the column;

[0040] Fig.12 for Fig.11 A right side view from above;

[0041] Fig.13 This is a schematic diagram of the layout of the platform door column placement rack.

[0042] In the figure: 1-trolley motion module; 2-operation module; 3-robotic arm fixing module; 4-robotic arm z-axis rotation module; 5-robotic arm y-axis rotation module; 6-robotic arm x-axis rotation module; 7-embedded part sensing module; 8-fixture module; 9-image sensing camera; 10-platform door column placement rack; 11-platform door column. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] Embodiment 1:

[0046] See also Figure 1-13 The present invention provides a technical solution: a rapid construction process for the foundation of an existing lifting platform door of a high-speed railway station, such as Figure 1 The standardized construction process of the foundation of the lifting platform door of an existing high-speed railway station includes nine steps: measurement and layout, pit digging, foundation pit inspection, steel cage placement, foundation concrete pouring, embedded base plate placement, maintenance, installation of column bases and restoration of the platform surface.

[0047] S1: Measurement and staking out: The platform layout needs to be installed with a reference control line, and the person in charge of measurement will lead the layout construction workers to lay out the reference line. The platform door centerline team will start laying out the platform door centerline based on the reference line and drawings. The platform door installation position positioning team will then start the installation position positioning and marking work of the platform door, using the centerline as the reference and using the standard platform door fixed installation position positioning tooling to locate the installation position. After completing the work, the platform door centerline layout team will start the drawing size review work to check the error between the size of each position and the drawing. The next group of construction can only be carried out after each group of platform doors has been reviewed and found to be correct. Each process is strictly carried out in accordance with the self-inspection and mutual inspection standards to ensure the accuracy of measurement and layout and reduce the interference of accumulated errors on subsequent processes.

[0048] S2: Digging: Excavate the foundation pit for the roadside station column, the foundation size is 1.35m (length) × 1.35m (width) × 1.5m (depth), and the top surface of the foundation is buried at a depth of 130mm. Use a special marble cutting machine to cut according to the ink line that has been drawn. Do not damage the floor tiles outside the ink line. At the same time, take out the floor tiles in the pit. Chisel away the concrete under the floor tiles. During the excavation of the foundation pit, the disturbance to the surrounding soil should be reduced. After the foundation reaches the design strength, the foundation pit is backfilled with 37 ash soil. The compaction coefficient of the backfill soil should be not less than 0.95, and the bottom of the foundation pit is compacted manually. Drill holes for the remaining cap stones in the foundation pit after excavation and fix them with steel bars. Before the platform surface is paved, the foundation pit must be protected with steel plates every day, and the protection area must be inspected every day to prevent the cover plate from moving and the cap from loosening.

[0049] S3: Inspection of foundation pit: After the foundation depth is in place, the depth, verticality and position of the foundation pit shall be inspected. The pit depth shall be measured with a measuring rope (hammer), and the foundation pit depth shall meet the design requirements; the verticality of the foundation pit shall be measured with a hanging rope, and if it does not meet the requirements, the hole shall be repaired manually until it meets the design requirements; the foundation pit position shall be inspected by the surveyor.

[0050] S4: Rebar cage placement: The rebar cage is processed centrally. After the rebar cage is inspected and qualified, it is transported to the work site and lowered. When the rebar cage is hoisted, it should be aligned with the hole position, hoisted vertically, and slowly placed into the pit to avoid collision with the hole wall. When the rebar cage is placed in the designed position, it is tied and fixed with the existing 180mm thick C20 reinforced concrete steel bars. Measures should be taken to prevent deformation of the rebar cage during hoisting, transportation and installation.

[0051] like Figure 2 , 3 As shown, prefabricated reinforcement cages require:

[0052] (1) The steel cage should be made of square molds and made of HRB400 steel bars. The design value of tensile and compressive strength of HRB400 steel bars is 360N / mm2;

[0053] (2) The strength index of steel bars shall meet the relevant requirements of GB50010-2010. The standard value of the yield strength of steel bars shall have a guarantee rate of not less than 95%;

[0054] (3) Longitudinal stress reinforcement should be hot-rolled ribbed steel bars with "E" code, and the ratio of the actual measured value of tensile strength to the actual measured value of yield strength of the steel bars should not be less than 1.25;

[0055] (4) The ratio of the measured yield strength of the steel bar to the standard strength value should not be greater than 1.3, and the measured total elongation of the steel bar under maximum tension should not be less than 9%;

[0056] (5) During construction, when it is necessary to replace the longitudinal force-bearing steel bars in the original design with steel bars of higher strength grade, the calculation shall be made in accordance with the principle of equal design value of tensile bearing capacity of steel bars, and the minimum reinforcement ratio requirements shall be met. When replacing steel bars, in addition to meeting the design requirements of component bearing capacity, total elongation under maximum force, crack width verification and seismic regulations, the minimum reinforcement ratio, steel bar spacing, cover thickness, steel bar anchorage length, joint area percentage and lap length shall also be met. Steel bar replacement and changes shall be approved in writing by the structural designer.

[0057] S5: Foundation concrete pouring: Use finished concrete, the foundation concrete grade is C30, and the cast-in-place process is adopted. During the concrete pouring process, use an inserted vibrator to vibrate and compact the concrete layer by layer, especially at the corners. Control the elevation of the concrete on the top surface of the foundation, and the foundation concrete must be poured continuously.

[0058] S6: Pre-embedded floor placement: The embedded parts are processed and manufactured in advance and transported to the site for installation during construction. When the concrete pouring reaches a certain elevation, the embedded floor begins to be placed. The base height is 250mm below the platform surface and 675mm from the platform edge. The elevation of the top surface of the embedded floor needs to be well controlled.

[0059] Requirements for embedded parts of prefabricated columns:

[0060] (1) The embedded parts of the column are made of Q235B material, 16mm thick, 700mm long and 400mm wide; 8 18mm holes are opened on the steel plate, and screws are used to penetrate. The foundation is buried 500mm, and the screws are exposed 90mm from the foundation. They are fixed with full welding, and the welding points are treated with rust prevention. The lower part of the screw is 100mm with an arc;

[0061] (2) The screw rod uses an M16 Dacromet 8.8 grade screw rod with the length as shown in the figure. For details, see the attached construction drawing.

[0062] S7: Maintenance: After pouring concrete, the humidity and temperature control of concrete should be strengthened. The poured concrete should be covered and watered within 12 hours. Generally, the constant wet maintenance should be no less than 7 days and nights. The maintenance should be inspected and implemented by a dedicated person. The maintenance time should be no less than 28 days.

[0063] S8: Installation of column base: The platform door columns are also processed and manufactured in advance, and transported to the site for installation during construction. Clean the surface of the embedded parts, place the column base on the embedded bottom plate, and make the column base level with the platform plane. Use a level to check the horizontality of the upper surface of the column base steel plate in the XY direction, and level the steel plate at the bottom of the column with a flatness of ±1mm. Measure the distance between the column base and the platform edge, with an error of ±1mm. Measure the distance between the column base and the left and right bases, with an error of ±1mm. Fix the column base to the embedded floor with nuts, and protect the screw holes on the base. After the column base is installed, use H60 grouting material to grout the base gap.

[0064] This solution proposes a mechanical arm gripping trolley for column base installation to improve installation efficiency and achieve column posture fixation and rapid alignment during installation. Figure 8 shown.

[0065] In the figure, the reference numerals are respectively: 1-trolley motion module; 2-operation module; 3-robotic arm fixing module; 4-robotic arm z-axis rotation module; 5-robotic arm y-axis rotation module; 6-robotic arm x-axis rotation module; 7-embedded part sensing module; 8-clamp module; 9-image sensing camera; 10-platform door column placement rack; 11-platform door column.

[0066] The robotic arm gripping trolley includes: 1-trolley motion module, 2-operation module, 3-robotic arm fixing module, 4-robotic arm z-axis rotation module, 5-robotic arm y-axis rotation module, 6-robotic arm x-axis rotation module, 7-embedded parts sensing module, 8-clamp module, and 9-image sensing camera.

[0067] This robot gripping trolley is a semi-automatic tooling equipment suitable for the installation of platform door columns. Construction personnel need to operate the trolley to control the 8-clamp module through the 2-operation module to clamp the 11-platform door column from the 10-platform door column placement rack located in the center of the platform. The construction personnel drive the 1-trolley movement module to the vicinity of the pit through the 2-operation module, and the 3-mechanical arm fixing module fixes the entire robot gripping clamp to the front end of the trolley. The 2-operation module can control the 4-mechanical arm z-circle rotation module, the 5-mechanical arm y-axis rotation module and the 6-mechanical arm x-axis rotation module to achieve three-axis efficient movement of the 8-clamp module at the end of the robot gripping clamp. The construction personnel control the 8-clamp module to move above the embedded part and drive the 6-mechanical arm x-axis rotation module to rotate the horizontal 11-platform door column to the vertical direction. The 9-image sensing camera placed on the side of the 7-embedded part sensing module can identify the embedded parts below through image learning. At the same time, the 9-image sensing camera has a built-in distance sensor. The two work together to control the robot arm to automatically calibrate the position of the 8-fixture module so that it is 3 meters above the embedded part. After the position calibration is completed, the pre-entered algorithm instructions are implemented to make the 8-fixture module automatically retreat a distance and slowly lower the column base to place it on the embedded base plate. After manually checking the horizontality and distance, the column base and the embedded floor are fixed with nuts and the base gap is grouted to complete the installation.

[0068] like Fig.12 Each set of 10-platform door column placement racks is divided into five layers, with an 11-platform door column placed on each layer. The layout of the 10-platform door column placement rack on the platform is as follows Fig.13 As shown, each set of racks corresponds to the installation of 5 columns in the upper row and 5 columns in the lower row. This layout is more efficient than placing the racks in the middle of the platform.

[0069] S9: Restore the platform surface: After the column base is installed, start laying the floor tiles. The height of the floor tiles is at the same level as the column base. During the paving process, protect the column base to prevent mortar from entering the screw holes of the base. The construction is carried out in the order of stone selection, stone layout, stone protection, paving, cleaning and finished product protection.

[0070] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid construction process for the foundation of an existing high-speed railway station lifting platform door, characterized in that: The specific steps of the rapid construction process of the lifting platform door foundation of the existing high-speed railway station are as follows: S1: Measurement and setting out: measure and take the installation reference control line on the platform surface; S2: Digging: digging the foundation pit for the road base station column; S3: Inspection of foundation pit: After the foundation depth is in place, the depth, verticality and position of the foundation pit shall be inspected; S4: Rebar cage placement: The rebar cage is processed centrally. After the rebar cage is inspected and qualified, it is transported to the work site and lowered. When the rebar cage is hoisted, it must be aligned with the hole position, hoisted vertically, and slowly placed into the pit to avoid collision with the hole wall; S5: Foundation concrete pouring: Use finished concrete, the foundation concrete grade is C30, and the cast-in-place process is adopted; S6: Pre-embedded base plate placement: Pre-embedded parts are processed and manufactured in advance and transported to the site for installation during construction; S7: Maintenance: After the concrete is poured, the humidity and temperature of the concrete shall be controlled. The poured concrete shall be covered and watered within 12 hours and maintained in a wet state for no less than 7 days and nights. S8: Install the column base: The platform door column is also processed and manufactured in advance, and transported to the site for installation during construction. Clean the surface of the embedded parts, place the column base on the embedded bottom plate, and make the column base and the platform plane level. Use a level to check the levelness of the upper surface of the column base steel plate in the XY directions, level the steel plate at the bottom of the column, and make the flatness ±1mm. Measure the distance between the column base and the platform edge, and the error is ±1mm. Measure the distance between the column base and the left and right bases, and the error is ±1mm. Fix the column base and the embedded floor with nuts, and protect the screw holes on the base. After the column base is installed, use H60 grouting material to grout the base gap; S9: Restore the platform surface: After the column base is installed, start laying the floor tiles. The height of the floor tiles should be at the same level as the column base. During the tiling construction, protect the column base to prevent mortar from entering the screw holes of the base.

2. According to claim 1, a rapid construction process for the foundation of an existing high-speed railway station lifting platform door is characterized in that: The specific method for measuring the installation reference control line is: The surveying person in charge leads the layout construction workers to lay out the baseline. The platform door centerline team starts to lay out the platform door centerline based on the baseline and drawings. The platform door installation position positioning team then starts the platform door installation position positioning and marking work, using the centerline as the reference and using standard platform door fixed installation position positioning tooling to locate the installation position.

3. According to claim 1, a rapid construction process for the foundation of an existing high-speed railway station lifting platform door is characterized in that: The dimensions of the pit dug in step S2 are: the foundation dimensions are 1.35m long×1.35m wide×1.5m deep, and the top surface of the foundation is buried at a depth of 130mm.

4. According to claim 1, a rapid construction process for the foundation of an existing high-speed railway station lifting platform door is characterized in that: In step S3, the foundation pit inspection is specifically as follows: measuring the pit depth with a measuring rope, which should meet the design requirements; measuring the verticality of the foundation pit with a hanging rope, and if it does not meet the requirements, manual hole repair is performed until it meets the design requirements. The foundation pit position inspection is performed by the surveyor.

5. According to claim 1, a rapid construction process for the foundation of an existing high-speed railway station lifting platform door is characterized in that: In step S4, when the steel cage is placed at the designed position, it is tied and fixed to the existing 180 mm thick C20 reinforced concrete steel bars. Measures should be taken to prevent the steel cage from deformation during lifting, transportation and installation.

6. The rapid construction process for the foundation of an existing high-speed railway station lifting platform door according to claim 1 is characterized by: In step S5, during the concrete pouring process, an inserted vibrating rod is used to vibrate and compact the concrete in layers, and the corners are vibrated more vigorously to control the elevation of the concrete on the top surface of the foundation, and the foundation concrete is poured continuously.

7. The rapid construction process for the foundation of an existing high-speed railway station lifting platform door according to claim 1 is characterized by: In step S6, when the concrete pouring reaches the elevation, the embedded floor begins to be placed. The base height is 250 mm below the platform surface and 675 mm away from the platform edge. The elevation of the top surface of the embedded floor needs to be well controlled.

8. The rapid construction process for the foundation of an existing high-speed railway station lifting platform door according to claim 1 is characterized by: In step S7, the curing time is not less than 28 days.

9. The rapid construction process for the foundation of an existing high-speed railway station lifting platform door according to claim 1, characterized in that: In step S9, the construction is carried out in the order of stone selection, stone laying, stone protection, paving, cleaning and finished product protection.

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