Construction method for centering error control of guide frame system and lattice column of subway station

Abstract

The invention discloses a guide frame system and a construction method for controlling the centering error of a lattice column of a subway station. The guide frame system includes a guide frame base and a guide angle steel component. The guide frame base includes a guide frame base subsection I and a guide frame base subsection II. The guide frame base subsection I includes a "["-shaped structural member and a support member I. The top end of the support member I is tilted outward and fixedly arranged below the end of the "["-shaped structural member. The guide frame base subsection II includes a "]"-shaped structural member and a support member II. The top end of the support member II is tilted outward and fixedly arranged below the end of the "]"-shaped structural member. The "["-shaped structure of the guide frame base subsection I and the "]"-shaped structural member of the guide frame base subsection II form a square frame. The guide angle steel component is fixedly arranged at the inner corner of the square frame of the guide frame base. The guide frame system is used to control the centering error of the lattice column of the subway station, so as to ensure that the final centering error of the lattice column is within the allowable range of the design specification and ensure the effective connection between the steel support connecting beam and the lattice column.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit construction, in particular to a construction method for controlling centering errors of a guide frame system and a lattice column of a subway station. Background Art

[0002] According to previous engineering examples, due to the large horizontal span of the station, a row of lattice columns is required to be set up in the middle of the station to hold up the steel support, and the anti-pulling piles of the enclosure structure also serve as the column pile foundation. The general column pile size is 600*600mm, which is welded by 4 L200*20 equilateral angle steels and tie plates. The diameter of the lattice column foundation pile is 1200mm, and the pile top is designed to be the bottom surface of the first support. The lattice column is inserted into the foundation pile for 3.0m, and the pile length below the bottom of the foundation pit is 20m. The lattice column and the pile body steel cage can be reliably welded and hoisted into the hole together for accurate positioning. However, due to the long length of the foundation pile and the different stiffness of the lattice column and the foundation pile steel cage, most of them are hoisted in sections: that is, the foundation pile steel cage is hoisted first, and then the lattice column is hoisted. After the connection between the lattice column and the steel cage is completed, it is lowered to the final position.

[0003] At present, during the subsequent foundation pit excavation process, it is found that some lattice columns have large centering errors, that is, the lattice column is inconsistent with the bottom contour line of the first concrete support, and the angles are different, which affects the subsequent erection of steel support connecting beams, resulting in a loose connection between the steel support connecting beam and the lattice column, affecting the overall force system. Summary of the invention

[0004] The purpose of the present invention is to provide a guide frame system and a construction method for controlling the centering error of the lattice columns of a subway station. The present invention adopts a guide frame system to control the centering error of the lattice columns of the subway station, which can ensure that the final centering error of the lattice columns is within the allowable range of the design specifications, ensure the effective connection between the steel support connecting beam and the lattice column, and ensure the safety of the subsequent foundation pit excavation and main structure construction stages; and the various devices adopted in the construction method for controlling the centering error of the lattice columns of the subway station disclosed by the present invention are all detachable, the operation process is simple, and the installation and disassembly are convenient. It has the characteristics of low cost, high efficiency, convenient organization, reasonable process, safety and reliability, and has a wide range of applications.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The guide frame system includes a guide frame base and a guide angle steel component 6. The guide frame base includes a guide frame base section I2 and a guide frame base section II3. The guide frame base section I2 includes a "["-shaped structural member and a support member I. The top end of the support member I is tilted outward and fixedly arranged below the end of the "["-shaped structural member. The guide frame base section II3 includes a "]"-shaped structural member and a support member II. The top end of the support member II is tilted outward and fixedly arranged below the end of the "]"-shaped structural member. The "["-shaped structure of the guide frame base section I2 and the "]"-shaped structural member of the guide frame base section II3 form a square frame. The guide angle steel component 6 is fixedly arranged at the inner corner of the square frame of the guide frame base.

[0007] The guide frame base section Ⅰ2 includes a short cross bar Ⅰ, a short cross bar Ⅱ, a long cross bar Ⅰ, a support leg Ⅰ, and a support leg Ⅱ. The short cross bar Ⅰ, the long cross bar Ⅰ, and the short cross bar Ⅱ are connected at right angles in sequence to form a "["-shaped structural member. The top ends of the support legs Ⅰ and Ⅱ are respectively tilted outward and fixedly arranged under the two ends of the long cross bar Ⅰ to form a support member Ⅰ. The guide frame base section Ⅱ3 includes a short cross bar Ⅲ, a short cross bar Ⅳ, a long cross bar Ⅱ, a support leg Ⅲ, and a support leg Ⅳ. The short cross bar Ⅲ, the long cross bar Ⅱ, and the short cross bar Ⅳ are connected at right angles in sequence to form a "]"-shaped structural member. The top ends of the support legs Ⅲ and Ⅳ are respectively tilted outward and fixedly arranged under the two ends of the long cross bar Ⅱ to form a support member Ⅱ.

[0008] Further, the top end of the short cross bar I is fixedly provided with a base division connection plate I, the top end of the short cross bar II is fixedly provided with a base division connection plate II, the top end of the short cross bar III is fixedly provided with a base division connection plate III, the top end of the short cross bar IV is fixedly provided with a base division connection plate IV, the base division connection plate I is detachably connected to the base division connection plate III, the base division connection plate II is detachably connected to the base division connection plate IV, and the base division connection plate I, the base division connection plate II, the base division connection plate III and the base division connection plate IV form a base division connection member 5;

[0009] Furthermore, symmetrical through holes are arranged on the base division connecting plate I and the base division connecting plate III, and symmetrical through holes are also arranged on the base division connecting plate II and the base division connecting plate IV. Bolts are arranged in the through holes of the base division connecting plate I and the base division connecting plate III, and bolts are also arranged in the through holes of the base division connecting plate II and the base division connecting plate IV.

[0010] The guide frame base also includes a gusset bottom surface connecting component 4, which includes a gusset bottom surface connecting steel plate I, a gusset bottom surface connecting steel plate II, a gusset bottom surface connecting steel plate III, and a gusset bottom surface connecting steel plate IV. The gusset bottom surface connecting steel plate I, the gusset bottom surface connecting steel plate II, the gusset bottom surface connecting steel plate III, and the gusset bottom surface connecting steel plate IV are respectively fixedly arranged on the bottom ends of support legs I, support legs II, support legs III, and support legs IV.

[0011] The outer wall of the guide angle steel component 6 is fixedly provided with a guide angle steel connecting component 7, and the guide angle steel component 6 is fixedly provided at the inner corner of the square frame of the guide frame base through the guide angle steel connecting component 7.

[0012] Furthermore, the guide angle steel component 6 includes guide angle steel I, guide angle steel II, guide angle steel III, and guide angle steel IV, which are respectively located at the four inner corners of the square frame of the guide frame base; the outer sides of the guide angle steels I, guide angle steel II, guide angle steel III, and guide angle steel IV are respectively fixed with guide angle steel connecting plates I, guide angle steel connecting plates II, guide angle steel connecting plates III, and guide angle steel connecting plates IV, which are respectively fixed at the top four corners of the square frame of the guide frame base by bolts.

[0013] Furthermore, the tops of the guide angle steels I and II are fixedly connected by a horizontal guide angle steel plate I8, and the tops of the guide angle steels III and IV are fixedly connected by a horizontal guide angle steel plate II.

[0014] The construction method for controlling the centering error of the lattice columns of subway stations adopts a guide frame system. The specific steps are as follows:

[0015] (1) Calculate and verify the coordinates of the lattice column pile position and the guide base point, and stake out the lattice column pile axis control points on the construction ground;

[0016] (2) Processing and shaping the lattice column and column pile reinforcement cages, burying casings at the lattice column pile sites and constructing the lattice column pile holes;

[0017] (3) Place the column pile reinforcement cage into the lattice column pile hole from above the lattice column pile hole until the top of the column pile reinforcement cage is 1.2 to 1.5 m above the ground, and use steel poles and sleepers to erect the column pile reinforcement cage on the casing; then insert the lattice column into the column pile reinforcement cage from above the lattice column pile hole to a preset depth, and fix the column pile reinforcement cage and the lattice column to obtain a lattice column-reinforcement cage connection;

[0018] (4) Remove the steel poles and sleepers, lower the lattice column-rebar cage connector to the top of the column pile rebar cage, which is located 0.2~0.3m from the top of the casing. Use the steel poles and sleepers to erect the lattice column-rebar cage connector on the casing. Combine the guide frame base section I and the guide frame base section II of the guide frame base and set them at the guide base point. Make the lattice column-rebar cage connector located in the square frame formed by the "["-shaped structure of the guide frame base section I and the "]"-shaped structure of the guide frame base section II.

[0019] (5) Taking the square frame of the guide frame base as a reference, rotate the lattice column-reinforcement cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square frame outline of the guide frame base;

[0020] (6) Remove the steel poles and sleepers, lower the lattice column-rebar cage connector to a preset depth below the top of the column pile rebar cage and the guide angle steel member of the guide frame system is inserted into the ground, use the steel poles and sleepers to erect the lattice column-rebar cage connector on the casing, insert the guide angle steel member of the guide frame system into the ground to the preset depth, and then fix the guide angle steel member at the inner corner of the square frame of the guide frame base;

[0021] (7) Using the square hole profile formed by the guide angle steel member as a reference, rotate the lattice column-reinforcement cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square hole profile;

[0022] (8) Remove the steel poles and sleepers, lower the lattice column-rebar cage connector to the top of the lattice column to the specified elevation, position it through the lattice column hanging bars, and pass the steel poles through the lattice column hanging bars. Install the lattice column-rebar cage connector on the casing through the steel poles and sleepers. Using the square hole outline formed by the guide angle steel member as a reference, rotate the lattice column-rebar cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square hole outline, completing the subway station lattice column centering process;

[0023] (9) Dismantle the guide frame system.

[0024] Furthermore, the diameter of the casing 1 is 20-25 cm larger than the diameter of the lattice column pile, and the top surface of the casing 1 is 20-30 cm higher than the construction platform; the lattice column 10 includes 4 lattice column angle steels 12 and several layers of lattice column plates 11, the 4 lattice column angle steels 12 form a cubic frame of the lattice column 10, the lattice column plates 11 are horizontally fixed between the lattice column angle steels 12, and the spacing between adjacent layers of lattice column plates 11 is not more than 800 mm.

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

[0026] (1) The construction method of the present invention, which uses a guide frame system to control the centering error of the lattice column of the subway station, improves the safety of the subsequent earth excavation and main structure construction stages. The guide frame system can ensure that the centering error of the lattice column is within the deviation range allowed by the design and specifications. After the construction is completed, the lattice column is basically consistent with the bottom surface contour line (specified elevation) of the first concrete support, which can ensure the installation accuracy of the steel support connecting beam, improve the welding strength of the continuous beam and the lattice column, and effectively ensure the stability of the overall support system;

[0027] (2) The construction method of the present invention, which uses a guide frame system to control the centering error of the subway station lattice column, is easy to construct, has low cost and high efficiency;

[0028] (3) The guide frame system used in the present invention is highly detachable and has a high reuse rate;

[0029] (4) The construction method of the present invention, which uses a guide frame system to control the centering error of the subway station lattice column, is easy to organize and only adds some processes during the hoisting and lowering process, which does not affect the early drilling construction and subsequent concrete pouring construction. The construction process is reasonable, safe and reliable, and has a wide range of applications.

[0030] (5) In the construction method of the present invention for controlling the centering error of the lattice column of a subway station by using a guide frame system, all kinds of devices are detachable, the operation process is simple, the installation and disassembly is convenient, and the environmental adaptability is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is the front view of the guide frame system;

[0032] Figure 2 It is the side view of the guide frame system;

[0033] Figure 3 It is a top view of the guide frame system;

[0034] Figure 4 It is a schematic diagram of the coordination between the base sub-connection plate I and the base sub-connection plate III;

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide frame base;

[0036] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0037] Figure 7 Schematic diagram of the three-dimensional structure of the guide frame system;

[0038] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0039] Fig. 9 A schematic diagram of the construction status of the centering error control of the subway station lattice columns during the installation of the guide angle steel components;

[0040] Fig.10 It is a schematic diagram of the construction status of the centering error control of the subway station lattice column with the guide angle steel member as the reference period;

[0041] Fig.11 The schematic diagram of the construction status of the centering error control of the subway station lattice column during the removal of the guide frame;

[0042] In the figure: 1- casing, 2- guide frame base section I, 3- guide frame base section II, 4- angle brace bottom connecting member, 5- base section connecting member, 6- guide angle steel member, 7- guide angle steel connecting member, 8- horizontal guide angle steel plate I, 9- construction ground, 10- lattice column, 11- lattice column plate, 12- lattice column angle steel, 13- steel shoulder pole, 14- sleeper, 15- lattice column suspension bar, 16- column pile reinforcement cage. 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] Example 1: Figures 1 to 8 As shown, the guide frame system includes a guide frame base and a guide angle steel member 6, the guide frame base includes a guide frame base subsection I2 and a guide frame base subsection II3, the guide frame base subsection I2 includes a "["-shaped structural member and a support member I, the top end of the support member I is tilted outward and fixedly arranged below the end of the "["-shaped structural member, the guide frame base subsection II3 includes a "]"-shaped structural member and a support member II, the top end of the support member II is tilted outward and fixedly arranged below the end of the "]"-shaped structural member, the "["-shaped structure of the guide frame base subsection I2 and the "]"-shaped structural member of the guide frame base subsection II3 form a square frame, and the guide angle steel member 6 is fixedly arranged at the inner corner of the square frame of the guide frame base;

[0045] The guide frame base subdivision Ⅰ2 includes a short cross bar Ⅰ, a short cross bar Ⅱ, a long cross bar Ⅰ, a support leg Ⅰ, and a support leg Ⅱ. The short cross bar Ⅰ, the long cross bar Ⅰ, and the short cross bar Ⅱ are sequentially connected at right angles to form a "["-shaped structural member. The top ends of the support legs Ⅰ and the support legs Ⅱ are respectively tilted outwards and fixedly arranged below the two ends of the long cross bar Ⅰ to form a support member Ⅰ. The guide frame base subdivision Ⅱ3 includes a short cross bar Ⅲ, a short cross bar Ⅳ, a long cross bar Ⅱ, a support leg Ⅲ, and a support leg Ⅳ. The short cross bar Ⅲ, the long cross bar Ⅱ, and the short cross bar Ⅳ are sequentially connected at right angles to form a "]"-shaped structural member. The top ends of the support legs Ⅲ and the support legs Ⅳ are respectively tilted outwards and fixedly arranged below the two ends of the long cross bar Ⅱ to form a support member Ⅱ.

[0046] The top end of the short cross bar Ⅰ is fixedly provided with a base sub-connection plate Ⅰ, the top end of the short cross bar Ⅱ is fixedly provided with a base sub-connection plate Ⅱ, the top end of the short cross bar Ⅲ is fixedly provided with a base sub-connection plate Ⅲ, the top end of the short cross bar Ⅳ is fixedly provided with a base sub-connection plate Ⅳ, the base sub-connection plate Ⅰ is detachably connected to the base sub-connection plate Ⅲ, the base sub-connection plate Ⅱ is detachably connected to the base sub-connection plate Ⅳ, the base sub-connection plate Ⅰ, the base sub-connection plate Ⅱ, the base sub-connection plate Ⅲ and the base sub-connection plate Ⅳ form a base sub-connection member 5 (see Figure 5 );

[0047] Symmetrical through holes are provided on the base sub-connection plate I and the base sub-connection plate III, and symmetrical through holes are also provided on the base sub-connection plate II and the base sub-connection plate IV. Bolts are provided in the through holes of the base sub-connection plate I and the base sub-connection plate III, and bolts are also provided in the through holes of the base sub-connection plate II and the base sub-connection plate IV.

[0048] The guide frame base also includes a gusset bottom surface connection member 4, which includes a gusset bottom surface connection steel plate I, a gusset bottom surface connection steel plate II, a gusset bottom surface connection steel plate III, and a gusset bottom surface connection steel plate IV, and the gusset bottom surface connection steel plate I, the gusset bottom surface connection steel plate II, the gusset bottom surface connection steel plate III, and the gusset bottom surface connection steel plate IV are respectively fixedly arranged at the bottom ends of the support legs I, the support legs II, the support legs III, and the support legs IV;

[0049] The outer wall of the guide angle steel member 6 is fixedly provided with a guide angle steel connecting member 7, and the guide angle steel member 6 is fixedly provided at the inner corner of the square frame of the guide frame base through the guide angle steel connecting member 7;

[0050] The guide angle steel component 6 includes guide angle steel Ⅰ, guide angle steel Ⅱ, guide angle steel Ⅲ, and guide angle steel Ⅳ, which are respectively located at the four inner corners of the square frame of the guide frame base; guide angle steel connecting plates Ⅰ, guide angle steel connecting plates Ⅱ, guide angle steel connecting plates Ⅲ, and guide angle steel connecting plates Ⅳ are respectively fixedly arranged on the outer sides of the guide angle steel Ⅰ, guide angle steel Ⅱ, guide angle steel connecting plates Ⅲ, and guide angle steel connecting plates Ⅳ, which are respectively fixedly arranged at the top of the four corners of the square frame of the guide frame base by bolts;

[0051] The tops of the guide angle steels Ⅰ and Ⅱ are fixedly connected by means of the horizontal guide angle steel tie plate Ⅰ8, and the tops of the guide angle steels Ⅲ and Ⅳ are fixedly connected by means of the horizontal guide angle steel tie plate Ⅱ;

[0052] Preferably, through holes are provided on the gusset bottom connection steel plate I, gusset bottom connection steel plate II, gusset bottom connection steel plate III, and gusset bottom connection steel plate IV of the gusset bottom connection member, and expansion bolts can be installed to fix the guide frame base to the ground (see Figure 8 );

[0053] The connection method of the gusset bottom connection steel plate I, gusset bottom connection steel plate II, gusset bottom connection steel plate III, gusset bottom connection steel plate IV and the ground of the gusset bottom connection member, the combined connection method of the guide frame base subsection I2 and the guide frame base subsection II3, the connection method of the guide angle steel member and the guide frame base can be detachably assembled by other methods other than bolt connection, and can be threaded connection or anchor bolt connection. In this embodiment, threaded connection is adopted, that is, the two plates are connected by bolt and nut connection, bolt welding spiral connection, screw buckle connection or self-tapping screw connection;

[0054] Preferably, the guide frame base subsection I2 and the guide frame base subsection II3 of the guide frame base are both welded by steel plates, the height of the square frame plane formed by the guide frame base subsection I2 and the guide frame base subsection II3 from the ground is 1 to 1.2 m, the support legs I and the support legs II form an angle of 45° with the ground, and the inner side length of the square frame is 10 to 12 cm longer than the side length of the lattice column;

[0055] Preferably, the length of the guide angle steel member buried in the ground is 1 to 1.2 m, and the top of the guide angle steel member is 50 to 60 cm higher than the top of the guide frame base;

[0056] The guide frame base can be entirely welded with steel plates, and can be a frame structure, a plate structure or other structural forms that can realize the guide frame base.

[0057] Example 2: Figures 9-11 As shown in the figure, the construction method for centering error control of lattice columns in subway stations adopts a guide frame system. The specific steps are as follows:

[0058] (1) Calculate and verify the coordinates of the lattice column pile position and the guide base point to ensure that the original data is correct, and stake out the lattice column pile axis control point on the construction ground 9;

[0059] (2) Processing and forming the lattice column and column pile reinforcement cage 16, and at the same time, burying casing at the lattice column pile site and constructing the lattice column pile hole according to the geological conditions; the lattice column pile hole is used for the column pile reinforcement cage 16 and the lattice column to be hoisted and lowered, and the final formed hole depth must meet the requirements of the drawings and design;

[0060] The lattice column 10 includes 4 lattice column angle steels 12 and several layers of lattice column gussets 11. The 4 lattice column angle steels 12 form a cubic frame of the lattice column 10. The lattice column gussets 11 are horizontally fixed between the lattice column angle steels 12. During construction, the position of the lattice column gussets 11 can be adjusted according to specific conditions, but the spacing between adjacent layers of lattice column gussets 11 is not greater than 800mm. The lattice column gussets 11 should be set away from the concrete support position, and the contact parts of the lattice column angle steels 12 and the lattice column gussets 11 are fully welded; the column pile reinforcement cage 16 needs to be on the reinforcement hoop Mark the main reinforcement positions at equal intervals, first weld 6 to 8 main reinforcements one by one on the reinforcing hoop to form a reinforcement skeleton, then weld other main reinforcements evenly to the reinforcement skeleton to form the entire column pile reinforcement cage 16 skeleton, and finally, spot weld the stirrups on the column pile reinforcement cage 16 skeleton according to the spacing of the design drawings; all welding between the lattice column and the reinforcement cage is connected with fully welded threaded steel bars, and the threaded steel bars are welded to the angle steel and bent downward and welded to the stirrups; the lattice column suspension bar 15 of the lattice column 10 is fixedly arranged at the top of the lattice column 10, and the length of the lattice column suspension bar 15 is selected according to the actual measurement;

[0061] The construction of lattice column pile holes needs to prevent the collapse of the hole wall. When the hole is drilled deep, the hole wall soil below the groundwater level will collapse into the hole under the hydrostatic pressure, and even quicksand will occur. During the drilling process, a casing needs to be buried to increase the hydrostatic pressure in the hole and prevent the hole from collapsing. At the same time, it also has the functions of isolating surface water, protecting the ground at the hole mouth, and fixing the position of the pile hole. The design height of the casing is adjusted according to the geological conditions and is guaranteed to be 1 to 2 meters. The diameter is 20 to 25 cm larger than the designed pile diameter, and the top surface is about 20 to 30 cm higher than the construction platform. During the construction of the lattice column pile hole, the drilling rig cannot be displaced or sunken. The rotary drilling rig used for the lattice column pile hole is Generally, a barrel drill bit is used. During construction, after the drill bit is lowered to a predetermined depth in the hole, the drill bit is rotated and pressurized, and the soil that is rotated is squeezed into the drill barrel. After the soil fills the drill barrel, the drill bit is reversed, the bottom of the drill bit is sealed and raised out of the hole, and then the switch at the bottom of the drill bit is automatically turned on to pour out the abandoned soil to form a hole. During the drilling process or after the drill bit is raised out of the borehole, grouting is injected into the hole, and the mud level must not be lower than the bottom of the casing; during the drilling process of the lattice column pile hole, the mud index is tested every 2 hours, and the mud index is adjusted in time to meet the requirements of the specification. At the same time, attention is paid to the changes in the soil layer, and the drilling speed and drilling pressure are compared with the geological map to reasonably adjust the drilling parameters;

[0062] (3) Select a suitable crane and lifting point, slowly place the column pile reinforcement cage 16 from above the lattice column pile hole into the lattice column pile hole until the top of the column pile reinforcement cage 16 is 1.2 to 1.5 m above the construction ground 9, select an appropriate reinforcing hoop position, and use the steel shoulder pole 13 and the sleeper 14 to erect the column pile reinforcement cage 16 on the casing; mark the depth position of the lattice column insertion into the column pile reinforcement cage 16 on the lattice column, and then insert the lattice column from above the lattice column pile hole into the column pile reinforcement cage 16 to the preset depth, and the column pile reinforcement cage 16 and the lattice column can be fixedly connected by full welding to obtain a lattice column-reinforcement cage connection;

[0063] (4) Remove the steel shoulder pole 13 and the sleeper 14, lower the lattice column-rebar cage connector to the top of the column pile rebar cage 16, and place it 0.2~0.3m from the top of the casing. Use the steel shoulder pole 13 and the sleeper 14 to erect the lattice column-rebar cage connector on the casing. Combine the guide frame base section I and the guide frame base section II of the guide frame base at the guide base point. The specific method is to use threaded connection, i.e., bolt and nut connection, bolt welding spiral connection, screw buckle connection or self-tapping screw connection to first fix the angle brace bottom surface connection steel plate I, angle brace bottom surface connection steel plate II, angle brace bottom surface connection steel plate III, and angle brace bottom surface connection steel plate IV to the guide base point on the ground, and then use threaded connection That is, the base sub-section connecting plate I of the guide frame base sub-section I2 of the guide frame base is fixedly connected with the base sub-section connecting plate III of the guide frame base sub-section II2 by means of bolt-nut connection, bolt-welded spiral connection, screw-clamp connection or self-tapping screw connection, and the base sub-section connecting plate II of the guide frame base sub-section I2 of the guide frame base is fixedly connected with the base sub-section connecting plate IV of the guide frame base sub-section II2 by means of threaded connection, that is, bolt-nut connection, bolt-welded spiral connection, screw-clamp connection or self-tapping screw connection, and the lattice column-reinforcement cage connection body is located in a square frame formed by the "["-shaped structure of the guide frame base sub-section I and the "]"-shaped structural member of the guide frame base sub-section II;

[0064] (5) Taking the square frame of the guide frame base as a reference, rotate the lattice column-reinforcement cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square frame outline of the guide frame base;

[0065] (6) Remove the steel poles 13 and sleepers 14, lower the lattice column-rebar cage connector to a preset depth where the top of the column pile rebar cage 16 is lower than the insertion depth of the guide angle steel member of the guide frame system into the ground, select an appropriate lattice column tie plate position, and use the steel poles 13 and sleepers 14 to erect the lattice column-rebar cage connector on the casing. Since the top of the column pile rebar cage 16 is just lower than the insertion depth of the guide angle steel member into the ground, it does not affect the insertion of the guide angle steel member. Fig. 9As shown, the guide angle steel member of the guide frame system is slowly inserted into the ground to a preset depth, and then the guide angle steel member is fixedly arranged at the inner corner of the square frame of the guide frame base, that is, the guide angle steel connecting plate I, guide angle steel connecting plate II, guide angle steel connecting plate III, and guide angle steel connecting plate IV, which are respectively fixedly arranged on the outside of the guide angle steel I, guide angle steel II, guide angle steel III, and guide angle steel IV, are fixedly arranged at the top of the four corners of the square frame of the guide frame base by means of threaded connection, that is, bolt and nut connection, bolt welding spiral connection, screw buckle connection, or self-tapping screw connection;

[0066] (7) Using the square hole outline formed by the guide angle steel member as a reference, rotate the lattice column-reinforcement cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square hole outline (see Fig.10 );

[0067] (8) Remove the steel pole 13 and the sleeper 14, lower the lattice column-rebar cage connector to the top of the lattice column to the specified elevation (the bottom surface of the first concrete support), position it through the lattice column hanger 15, and pass the steel pole 13 through the lattice column hanger 15. Install the lattice column-rebar cage connector on the casing through the steel pole 13 and the sleeper 14. Using the square hole outline formed by the guide angle steel member as a reference, rotate the lattice column-rebar cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square hole outline, completing the subway station lattice column centering process;

[0068] (9) Dismantling the guide frame system: first dismantle the guide angle steel components, then dismantle the guide frame base, and finally move to the next lattice column for recycling; the construction status diagram of the centering error control of the subway station lattice column during the guide frame dismantling period of the guide frame system is shown in Fig.11 .

[0069] 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 construction method for controlling the centering error of lattice columns in subway stations, characterized in that: A guide frame system is adopted, wherein the guide frame system comprises a guide frame base and a guide angle steel component, wherein the guide frame base comprises a guide frame base subsection I and a guide frame base subsection II, wherein the guide frame base subsection I comprises a "["-shaped structural member and a support member I, wherein the top end of the support member I is tilted outwardly and fixedly arranged below the end of the "["-shaped structural member, wherein the guide frame base subsection II comprises a "]"-shaped structural member and a support member II, wherein the top end of the support member II is tilted outwardly and fixedly arranged below the end of the "]"-shaped structural member, wherein the "["-shaped structure of the guide frame base subsection I and the "]"-shaped structural member of the guide frame base subsection II form a square frame, wherein the guide angle steel component is fixedly arranged at the inner corner of the square frame of the guide frame base; The specific steps of the construction method are as follows: (1) Calculate and verify the coordinates of the lattice column pile position and the guide base point, and stake out the lattice column pile axis control points on the construction ground; (2) Processing and shaping the lattice column and column pile reinforcement cages, burying casings at the lattice column pile sites and constructing the lattice column pile holes; (3) Place the column pile reinforcement cage into the lattice column pile hole from above the lattice column pile hole until the top of the column pile reinforcement cage is 1.2 to 1.5 m above the ground, and use steel poles and sleepers to erect the column pile reinforcement cage on the casing; then insert the lattice column into the column pile reinforcement cage from above the lattice column pile hole to a preset depth, and fix the column pile reinforcement cage and the lattice column to obtain a lattice column-reinforcement cage connection; (4) Remove the steel poles and sleepers, lower the lattice column-rebar cage connector to the top of the column pile rebar cage, which is located 0.2~0.3m from the top of the casing. Use the steel poles and sleepers to erect the lattice column-rebar cage connector on the casing. Combine the guide frame base section I and the guide frame base section II of the guide frame base and set them at the guide base point. Make the lattice column-rebar cage connector located in the square frame formed by the "["-shaped structure of the guide frame base section I and the "]"-shaped structure of the guide frame base section II. (5) Taking the square frame of the guide frame base as a reference, rotate the lattice column-reinforcement cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square frame outline of the guide frame base; (6) Remove the steel poles and sleepers, lower the lattice column-rebar cage connector to a preset depth below the top of the column pile rebar cage and the guide angle steel member of the guide frame system is inserted into the ground, use the steel poles and sleepers to erect the lattice column-rebar cage connector on the casing, insert the guide angle steel member of the guide frame system into the ground to the preset depth, and then fix the guide angle steel member at the inner corner of the square frame of the guide frame base; (7) Using the square hole profile formed by the guide angle steel member as a reference, rotate the lattice column-reinforcement cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square hole profile; (8) Remove the steel poles and sleepers, lower the lattice column-rebar cage connector to the top of the lattice column to the specified elevation, position it through the lattice column hanging bars, and pass the steel poles through the lattice column hanging bars. Install the lattice column-rebar cage connector on the casing through the steel poles and sleepers. Using the square hole outline formed by the guide angle steel member as a reference, rotate the lattice column-rebar cage connector so that the square section formed by the four angle steels of the lattice column is aligned with the square hole outline, completing the subway station lattice column centering process; (9) Dismantle the guide frame system.

2. The construction method for centering error control of lattice columns of subway stations according to claim 1 is characterized in that: The guide frame base section I includes a short cross bar I, a short cross bar II, a long cross bar I, a support leg I, and a support leg II. The short cross bar I, the long cross bar I, and the short cross bar II are connected at right angles in sequence to form a "["-shaped structural member. The top ends of the support legs I and the support legs II are respectively tilted outward and fixedly arranged under the two ends of the long cross bar I to form a support member I. The guide frame base section II includes a short cross bar III, a short cross bar IV, a long cross bar II, a support leg III, and a support leg IV. The short cross bar III, the long cross bar II, and the short cross bar IV are connected at right angles in sequence to form a "]"-shaped structural member. The top ends of the support legs III and the support legs IV are respectively tilted outward and fixedly arranged under the two ends of the long cross bar II to form a support member II.

3. The construction method for centering error control of lattice columns in subway stations according to claim 2 is characterized in that: A base division connecting plate I is fixedly provided at the top end of the short cross bar I, a base division connecting plate II is fixedly provided at the top end of the short cross bar II, a base division connecting plate III is fixedly provided at the top end of the short cross bar III, and a base division connecting plate IV is fixedly provided at the top end of the short cross bar IV. The base division connecting plate I is detachably connected to the base division connecting plate III, and the base division connecting plate II is detachably connected to the base division connecting plate IV.

4. The construction method for centering error control of lattice columns of subway stations according to claim 3 is characterized by: Symmetrical through holes are arranged on the base section connecting plate I and the base section connecting plate III, and symmetrical through holes are also arranged on the base section connecting plate II and the base section connecting plate IV. Bolts are arranged in the through holes of the base section connecting plate I and the base section connecting plate III, and bolts are also arranged in the through holes of the base section connecting plate II and the base section connecting plate IV.

5. The construction method for centering error control of lattice columns in subway stations according to claim 2 is characterized in that: It also includes a gusset bottom connecting component, which includes a gusset bottom connecting steel plate I, a gusset bottom connecting steel plate II, a gusset bottom connecting steel plate III, and a gusset bottom connecting steel plate IV. The gusset bottom connecting steel plate I, the gusset bottom connecting steel plate II, the gusset bottom connecting steel plate III, and the gusset bottom connecting steel plate IV are respectively fixedly arranged on the bottom ends of supporting legs I, supporting legs II, supporting legs III, and supporting legs IV.

6. The construction method for centering error control of lattice columns in subway stations according to claim 1 is characterized by: The outer wall of the guide angle steel component is fixedly provided with a guide angle steel connecting component, and the guide angle steel component is fixedly provided at the inner corner of the square frame of the guide frame base through the guide angle steel connecting component.

7. The construction method for centering error control of lattice columns in subway stations according to claim 6 is characterized by: The guide angle steel components include guide angle steel I, guide angle steel II, guide angle steel III, and guide angle steel IV, which are respectively located at the four inner corners of the square frame of the guide frame base; the outer sides of the guide angle steels I, guide angle steel II, guide angle steel III, and guide angle steel IV are respectively fixed with guide angle steel connecting plates I, guide angle steel connecting plates II, guide angle steel connecting plates III, and guide angle steel connecting plates IV, which are respectively fixed at the top four corners of the square frame of the guide frame base by bolts.

8. The construction method for centering error control of lattice columns in subway stations according to claim 7 is characterized in that: The tops of the guide angle steels Ⅰ and Ⅱ are fixedly connected by means of a horizontal guide angle steel tie plate Ⅰ, and the tops of the guide angle steels Ⅲ and Ⅳ are fixedly connected by means of a horizontal guide angle steel tie plate Ⅱ.

9. The construction method for centering error control of lattice columns in subway stations according to claim 1, characterized in that: The diameter of the casing is 20~25cm larger than the diameter of the lattice column pile, and the top surface of the casing is 20~30cm higher than the construction platform; the lattice column includes 4 lattice column angle steels and several layers of lattice column plates, the 4 lattice column angle steels form a cubic frame of the lattice column, the lattice column plates are horizontally fixed between the lattice column angle steels, and the spacing between adjacent layers of lattice column plates is not more than 800mm.

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