TY pier pouring method and system for controlling hydration heat

Abstract

The invention discloses a TY pier pouring method and system for controlling hydration heat. The method comprises the steps that S100, a connecting groove is downwards formed in the surface of a bearing platform along the contour of the bottom of a pier body; s200, the lower half sections of the first steel drum and the second steel drum are arranged in the connecting groove; s300, formwork erecting is conducted on the pier body, and the pier body is poured in sections to be flush with the top of the first steel drum; s400, the lower half sections of the first steel drum and the second steel drum are taken out, and the lower half sections of the first post-pouring section and the second post-pouring section are formed through pouring; s500, the upper half section of a second steel drum is arranged on the plane of the poured part, the formwork continues to be erected upwards, and the pier body is poured in a segmented mode till the pier body is flush with the top of the second steel drum; s600, the second steel drum is taken out, and an upper half section of a second post-pouring section is formed through pouring; and S700, the inclined legs and the bent cap above the pier body are sequentially subjected to segmented pouring, and pouring of the whole TY pier is completed. And a large amount of hydration heat generated in the pouring process is prevented from influencing the strength of the TY pier, causing temperature cracks of the TY pier and influencing the use safety of a bridge in the later period.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge engineering, and more specifically, relates to a TY pier casting method and system for controlling hydration heat. Background Art

[0002] During the pouring of large-volume concrete structures, the cement hydration reaction will release a large amount of heat, a phenomenon known as "hydration heat". If the hydration heat cannot be effectively controlled, it may cause the temperature inside the concrete to be too high, leading to a series of problems, including but not limited to temperature cracks, reduced strength and reduced durability. In the construction process of bridges, in order to ensure the strength of the piers, the commonly used construction method is to directly cast them on site at the designed location of the piers, so that they are connected to the abutments as one. However, most of the bridges are cross-river and cross-sea bridges, and the piers are located in the river or the sea. There are already certain difficulties in the pouring operation, and the hydration heat must be controlled during the pouring, which makes the operation even more difficult.

[0003] Among the currently used bridge pier construction methods, most of them design the bridge piers into hollow structures, and cool down the temperature in the hollow places through air convection or water pipes. Specifically, the pier body of the planned curved super-high bridge pier is set as a column-slab hollow structure; the concrete material for pouring the pier body is mainly slag silicate cement with low hydration heat; and then the construction operation is carried out in the following manner: first, the pier body concrete is poured in a layered manner, a pouring formwork is built, and the temperature of the layered concrete poured into the formwork is controlled at the same time, and temperature measuring elements and heat dissipation pipes are buried. The surface temperature information and center temperature information of the pier body concrete are collected through the temperature measuring elements. When the difference between the surface temperature and the internal center temperature of the pier body concrete reaches the set value, the cooling treatment method of heat dissipation by the heat dissipation pipe is used to control the difference between the surface temperature and the internal center temperature to be within an ideal range.

[0004] This pier construction method can control the hydration heat of the pier to a certain extent and can effectively prevent the generation of temperature stress cracks. However, during the pouring process, a large number of holes are left on the pier, which damages the overall structure of the pier and affects the strength of the pier itself, which may be counterproductive. Therefore, a TY pier pouring method and system for controlling the hydration heat is needed to control the hydration heat generated by concrete during the pouring process, while avoiding damage to the structure of the pier and ensuring the strength of the pier. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a TY pier casting method and system for controlling hydration heat. When the pier body is cast, a first post-casting section and a second post-casting section are reserved, and the first casting section is cast first. The reserved positions of the first post-casting section and the second post-casting section arranged vertically are used for heat dissipation, and then the first post-casting section and the second post-casting section are cast, so as to prevent a large amount of hydration heat from being generated during the casting process, thereby preventing the strength of the TY pier from being affected, and causing temperature cracks in the TY pier, thereby affecting the safety of the later use of the bridge.

[0006] To achieve the above objectives, according to a first aspect of an embodiment of the present invention, a TY pier casting method for controlling hydration heat is provided, comprising the following steps:

[0007] S100, determine the position of the pier body on the cap and the size of the bottom of the pier body, open a connecting groove on the cap surface downward along the contour of the bottom of the pier body, and clean it;

[0008] S200, placing a first steel drum at the center of the connecting groove, placing the lower half of the second steel drum on both sides of the first steel drum, and fixing them;

[0009] S300, formwork the pier body according to the design dimensions of the TY pier, and cast the pier body in sections until it is flush with the top of the first steel drum;

[0010] S400, taking out the lower halves of the first steel drum and the second steel drum, and casting the lower halves of the first steel drum and the second steel drum at their original positions in the pier body to form the lower halves of the first post-casting section and the second post-casting section;

[0011] S500, setting the upper half of the second steel drum on the plane of the cast part, continuing to formwork the part above the first steel drum, and casting the pier body in sections until it is flush with the top of the second steel drum;

[0012] S600, taking out the second steel drum, and casting the second steel drum at the original position in the pier body to form the upper half of the second post-casting section;

[0013] S700. Cast the inclined legs and cap beams above the pier in sections in turn to complete the casting of the entire TY pier.

[0014] Furthermore, in step S200, the first steel drum arranged at the bottom of the pier body is shorter than the second steel drums on both sides thereof, and after the erection is completed, the tops of the two are pre-fixed;

[0015] The second steel drums on both sides are tilted toward the middle to control their distance from the boundary of the pier body, thus avoiding quality problems during pouring due to the boundary of the pier body being too thin.

[0016] Furthermore, step S200 specifically includes the following steps:

[0017] S201, vertically arrange the first steel drum to ensure that its bottom surface is in close contact with the center of the connecting groove;

[0018] S202, determining the inclination degree of the second steel drum according to the size of the pier body, and setting the bottom of the second steel drum to be an oblique opening according to the inclination degree;

[0019] S203, the lower halves of the two second steel drums are arranged symmetrically and tilted toward the middle relative to the first steel drum, ensuring that their bottom surfaces are in close contact with the bottom surface of the connecting groove;

[0020] S204, setting up a steel frame on the top of the first steel drum and the lower half of the second steel drum to temporarily fix them;

[0021] S205. The surface of the connection groove except the position where the first steel drum and the second steel drum are installed is roughened and anchor steel bars are installed.

[0022] Furthermore, in step S300, in order to facilitate heat dissipation of the pier body during the pouring process, the pouring is carried out in sections, and the specific operations are as follows:

[0023] S301, completing the bundling of steel bars and the erection of the bottommost formwork according to the design dimensions of the first pouring section of the pier body, and connecting the steel bars with the anchoring steel bars in the connection groove when bundling them;

[0024] S302, pour the bottom layer of concrete for the pier body, vibrate and cure it, then support the formwork upwards;

[0025] S303, repeat step S302 until the casting is flush with the top of the first steel drum, and then remove the formwork.

[0026] Furthermore, in step S302, after the bottom of the pier body is poured to a reliable height, the first steel drum and the lower half of the second steel drum are ensured not to fall over, and the fixing brackets of the two are removed to prevent the brackets from affecting the subsequent pouring.

[0027] Furthermore, in steps S400 and S600, the method for pulling out the second steel drum from the first pouring section is as follows: a bracket is set at one end of the first pouring section, the bracket is fixedly connected to the steel bars exposed on the first pouring section, and a pulley is set on the bracket; the pulley is positioned on the extension line of the axis of the second steel drum, and the steel cable of the crane passes around the pulley and is connected to the inside of the second steel drum, and the second steel drum is pulled out of the first pouring section along its axial direction by the crane.

[0028] Furthermore, a temporary support structure is arranged at the hole through which the second steel drum is pulled out, a fulcrum is fixed at the bottom of the temporary support structure, and a support plate rotating around the fulcrum is arranged on the fulcrum, and a buffer assembly is arranged on the support plate and the first pouring section bracket, so that the second steel drum falls on the support plate after being pulled out, and then the lifting point of the second steel drum is adjusted to lift it down from the first pouring section.

[0029] Furthermore, the first steel barrel and the second steel barrel are both hollow cylindrical structures, made of steel material with good thermal conductivity. They are composed of two semicircular cylinders. The outer surfaces of the two cylinders are smooth, and connecting plates are provided on the two connecting surfaces facing inward. The connecting plates on the two cylinders are connected by bolts to splice them into a cylindrical shape.

[0030] Furthermore, the first steel drum is a hollow cylindrical structure, made of a steel material with good thermal conductivity, and is divided into at least three cylindrical surfaces, including at least one first-disassembly cylindrical surface and a plurality of rear-disassembly cylindrical surfaces. The two sides of the first-disassembly cylindrical surface are connected to the rear-disassembly cylindrical surface by an oblique opening, and the openings of the oblique openings on both sides face the central axis. The connection between the first-disassembly cylindrical surface and the rear-disassembly cylindrical surface is also provided with a connecting plate facing inward, and the first-disassembly cylindrical surface and the rear-disassembly cylindrical surface are connected to form a complete cylindrical structure by bolts through the connecting plate;

[0031] When removing it from the first cast section, remove the bolts between the first cast column and the second cast column. After the removal is completed, knock the first cast column to separate it from the first cast section toward the inside of the first steel drum. After the separation is completed, lift it out; then lift the second cast column out in the same way.

[0032] The second steel drum has the same structural composition as the first steel drum.

[0033] According to another aspect of an embodiment of the present invention, a TY pier casting system for controlling hydration heat is provided, comprising:

[0034] Cleaning module: used to determine the position of the pier body on the cap and the size of the bottom of the pier body, open a connecting groove on the cap surface along the contour of the bottom of the pier body, and clean it up;

[0035] Steel drum fixing module: used to set the first steel drum in the center of the connecting groove, set the lower half of the second steel drum on both sides of the first steel drum, and fix them;

[0036] The first pouring module is used to support the formwork of the pier body according to the design size of the TY pier, and pour the pier body in sections until it is flush with the top of the first steel barrel;

[0037] The second pouring module is used to take out the lower half of the first steel drum and the second steel drum, and pour the lower half of the first steel drum and the second steel drum at the original position in the pier body to form the lower half of the first post-casting section and the second post-casting section;

[0038] The third casting module is used to set the upper half of the second steel drum on the plane of the cast part to continue to formwork the part above the first steel drum, and cast the pier body in sections until it is flush with the top of the second steel drum;

[0039] The fourth pouring module is used to take out the second steel drum and pour the second steel drum at its original position in the pier body to form the upper half of the second post-casting section;

[0040] The fifth casting module is used to cast the inclined legs and cap beams above the pier in sections in sequence to complete the casting of the entire TY pier.

[0041] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0042] 1. The TY pier casting method of the present invention reserves a first post-casting section and a second post-casting section during the casting of the pier body, casts the first cast section first, uses the reserved positions of the first post-casting section and the second post-casting section arranged vertically to dissipate heat, and then casts the first post-casting section and the second post-casting section, so as to prevent a large amount of hydration heat from being generated during the casting process, thereby preventing the strength of the TY pier from being affected, and causing temperature cracks in the TY pier, thereby affecting the safety of the later use of the bridge.

[0043] 2. The TY pier casting method of the present invention provides a shorter first steel drum and a longer second steel drum, and the top of the second steel drum is placed close to the middle and tilted, so that the heat dissipation surface is arranged according to the characteristics of the pier body that is narrow at the top and wide at the bottom, so that during the casting process of the pier body, the heat dissipation of each layer can achieve good effect without affecting the casting structure of the pier body.

[0044] 3. The TY pier casting method of the present invention divides the first steel drum and the second steel drum into a first-dismantled column surface and a second-dismantled column surface. When the two are dismantled, the first-dismantled column surface can be dismantled toward the inner side close to the central axis, making it easier to fall off from the first-cast section during the dismantling process, making it easier to lift it out and avoiding structural damage to the first-cast section during the dismantling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of a process for casting a TY pier by controlling hydration heat according to an embodiment of the present invention;

[0046] Figure 2 A schematic diagram of a TY pier structure of a TY pier casting method for controlling hydration heat according to an embodiment of the present invention;

[0047] Figure 3 For the embodiment of the present invention Figure 2 Schematic diagram of the middle AA section;

[0048] Figure 4 For the embodiment of the present invention Figure 2 Schematic diagram of the middle EE section;

[0049] Figure 5 This is a specific flow chart of step S200 in a TY pier casting method for controlling hydration heat according to an embodiment of the present invention;

[0050] Figure 6This is a specific flow chart of step S300 in a TY pier casting method for controlling hydration heat according to an embodiment of the present invention;

[0051] Figure 7 This is a specific flow chart of step S400 in a TY pier casting method for controlling hydration heat according to an embodiment of the present invention;

[0052] Figure 8 This is a specific flow chart of step S500 in a TY pier casting method for controlling hydration heat according to an embodiment of the present invention;

[0053] Fig. 9 A schematic diagram of a specific flow chart of step S600 in a TY pier casting method for controlling hydration heat according to an embodiment of the present invention;

[0054] Fig.10 This is a schematic diagram of the overall structure of the first steel drum in Example 2 of the present invention;

[0055] Fig.11 This is a schematic diagram of the end surface structure of the first steel drum in Example 2 of the present invention.

[0056] In all the drawings, the same figure marks represent the same technical features, specifically: 1-base, 2-pier body, 21-first pouring section, 22-first post-pouring section, 23-second post-pouring section, 24-first steel barrel, 241-first dismantled column, 242-later dismantled column, 243-connecting plate, 25-second steel barrel, 3-inclined leg, 4-cap beam. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0058] Example 1

[0059] like Figure 1-4 As shown, a TY pier casting method for controlling hydration heat specifically comprises the following steps:

[0060] S100, determining the position of the pier body 2 on the cap 1 and the size of the bottom of the pier body 2, opening a connecting groove downward along the bottom contour of the pier body 2 on the surface of the cap 1, and cleaning it;

[0061] S200, a first steel barrel 24 is arranged at the center of the connecting groove, and the lower half of a second steel barrel 25 is arranged on both sides of the first steel barrel 24 and fixed;

[0062] S300, formwork is provided for the pier body 2 according to the design dimensions of the TY pier, and the pier body 2 is cast in sections until it is flush with the top of the first steel drum 24;

[0063] S400, taking out the lower halves of the first steel drum 24 and the second steel drum 25, and casting the lower halves of the first steel drum 24 and the second steel drum 25 at their original positions in the pier body 2 to form the lower halves of the first post-casting section 22 and the second post-casting section 23;

[0064] S500, setting the upper half of the second steel drum 25 on the plane of the cast part, continuing to formwork the part above the first steel drum 24, and casting the pier body 2 in sections until it is flush with the top of the second steel drum 25;

[0065] S600, taking out the second steel drum 25, and casting the second steel drum 25 at the original position in the pier body 2 to form the upper half of the second post-casting section 23;

[0066] S700, sequentially cast the inclined legs 3 and the cap beam 4 above the pier body 2 in sections to complete the casting of the entire TY pier.

[0067] In step S100, since the cap 1 and the pier body 2 are not cast at the same time, there is a casting time difference between the two, and the connection relationship between the two is only between the contact surfaces. In this case, the connection surfaces between the two may be loose, so a connection groove with the same shape as the bottom surface of the pier body 2 is opened on the surface of the cap 1, so that the pier body 2 is cast upward along the inside of the connection groove, so that the connection between the two is more secure. In order to ensure that the connection between the two is not blocked, the gravel, dust and other impurities in the connection groove need to be cleaned to ensure the cleanliness of the connection groove, so that the connection between the cap 1 and the pier body 2 is more secure.

[0068] In step S200, since the structure of the pier body 2 is thick at the bottom and thin at the top, the heat dissipation area requirements at the bottom and the top are different, and in this structure, the number of steel drums that can be placed is also inconsistent. In order to achieve a good heat dissipation effect, a larger heat dissipation area is set at the thicker section at the bottom, which is specifically manifested as follows: the first steel drum 24 arranged at the bottom of the pier body 2 is shorter than the second steel drums 25 on both sides thereof, and after the erection is completed, the tops of the two are pre-fixed. And since the pier body 2 is thick at the bottom and thin at the top, the second steel drums 25 on both sides are tilted toward the middle to control the distance between them and the boundary of the pier body 2, so as to avoid the boundary of the pier body 2 being too thin, resulting in quality problems during pouring.

[0069] The first steel barrel 24 and the second steel barrel 25 are both hollow cylindrical structures, made of steel material with good thermal conductivity. They are composed of two semicircular cylinders. The outer surfaces of the two cylinders are smooth, and connecting plates are provided on the two connecting surfaces facing inward. The connecting plates on the two cylinders are connected by bolts to splice them into a cylindrical shape.

[0070] like Figure 5 As shown, step S200 specifically includes the following steps:

[0071] S201, vertically arrange the first steel drum 24 to ensure that its bottom surface is in close contact with the center of the connecting groove;

[0072] S202, determining the inclination degree of the second steel drum 25 according to the size of the pier body 2, and setting the bottom of the second steel drum 25 to be an oblique opening according to the inclination degree;

[0073] S203, the lower halves of the two second steel drums 25 are arranged symmetrically with respect to the first steel drum 24 and tilted toward the middle to ensure that their bottom surfaces are in close contact with the bottom surface of the connecting groove;

[0074] S204, setting up a steel frame on the top of the lower half of the first steel drum 24 and the second steel drum 25 to temporarily fix them;

[0075] S205, roughening the surface of the connection groove except for the position where the first steel drum 24 and the second steel drum 25 are installed, and installing anchor steel bars.

[0076] like Figure 6 As shown, in step S300, in order to facilitate heat dissipation of the pier body 2 during the pouring process, the pouring is carried out in sections, and the specific operations are as follows:

[0077] S301, completing the bundling of steel bars and the erection of the bottommost formwork according to the design dimensions of the first pouring section of the pier body 2, and connecting the steel bars with the anchor steel bars in the connection groove when bundling them;

[0078] S302, pouring the bottom layer of concrete of pier body 2, vibrating and curing, and then supporting the formwork upwards;

[0079] S303, repeat step S302 until the casting is flush with the top of the first steel drum 24, and then remove the formwork.

[0080] In step S301, after the pier body 2 is poured to a position flush with the top of the first steel barrel 24, it is necessary to start pouring the first post-cast section 22 and the lower half of the second post-cast section 23 where the first steel barrel 24 is located. When bundling the steel bars, it is only necessary to bundle them to a position flush with the top of the first steel barrel 24, and a circle of operating space is reserved around the top of the lower halves of the first steel barrel 24 and the second steel barrel 25. Except for the part outside the operating space, a part of the bundled steel bars are leaked out.

[0081] In step S302, after the bottom of the pier body 2 is poured to a reliable height, the first steel drum 24 and the lower half of the second steel drum 25 are ensured not to fall over, and the fixing brackets of the two are removed to prevent the brackets from affecting the subsequent pouring.

[0082] like Figure 7As shown, step S400 specifically includes the following steps:

[0083] S401, loosen the bolts connecting the two cylindrical surfaces of the lower half of the first steel drum 24 and the second steel drum 25, so that the two cylindrical surfaces of the two are separated into independent parts;

[0084] S402, knock and pry the lower half of the first steel drum 24 and the second steel drum 25 to separate them from the first pouring section 21, pull one cylinder along the axis of the steel drum, pull it out completely, and then pull out the other cylinder;

[0085] S403, tying the steel cages of the lower half of the first post-casting section 22 and the second post-casting section 23, and placing them into the original positions of the lower half of the first steel drum 24 and the second steel drum 25;

[0086] S404, pouring the first post-casting section 22 and the lower half of the second post-casting section 23, and completing vibration and curing.

[0087] Before placing the bundled steel cage in step S403, it is necessary to clean the original positions of the lower half of the first steel drum 24 and the second steel drum 25. When the steel cage is tied, its height should also be higher than the top surface of the first steel drum 24.

[0088] like Figure 8 As shown, step S500 specifically includes the following steps:

[0089] S501, at the top of the lower half of the second post-casting section 23, the upper half of the second steel barrel 25 is arranged along the extension position of the lower half of the second post-casting section 23 according to the degree of inclination;

[0090] S502, setting up a steel frame on the top of the upper half of the second steel drum 25 to temporarily fix it;

[0091] S503, connecting the exposed steel bars in the first post-casting section 22 with the steel bars leaking out of the operating space, and continue to tie the steel bars upward;

[0092] S504, support the formwork and cast the concrete in sections until the concrete is cast to be flush with the top of the upper section of the second steel drum 25, and then remove the formwork.

[0093] In step S503, after the pier body 2 is cast to a position flush with the top of the upper half of the second steel barrel 25, it is necessary to start casting the upper half of the second post-cast section 23 where the upper half of the second steel barrel 25 is located. When bundling the steel bars, it is only necessary to bundle them to a position flush with the top of the upper half of the second steel barrel 25, and a circle of operating space is reserved around the top of the upper half of the second steel barrel 25. Except for the part outside the operating space, a part of the bundled steel bars are exposed.

[0094] In step S502, after the pier body 2 is poured to a reliable height, the upper half of the second steel drum 25 is ensured not to fall over, and the fixing bracket of the upper half of the second steel drum 25 is removed to prevent the bracket from affecting the subsequent pouring.

[0095] like Fig. 9 As shown, step S600 specifically includes the following steps:

[0096] S601, loosen the bolts connecting the two cylindrical surfaces of the upper half of the second steel drum 25, so that the two cylindrical surfaces are separated into independent parts;

[0097] S602, knock and pry the upper half of the second steel drum 25 to separate it from the first pouring section 21, pull one cylinder along the axis of the steel drum, pull it out completely, and then pull out the other cylinder;

[0098] S603, tying the steel cage of the upper half of the second post-casting section 23, and placing it into the original position of the lower half of the second steel drum 25;

[0099] S604, pouring the upper half of the second post-casting section 23, and completing vibration and curing.

[0100] Before placing the tied steel cage in step S603, it is necessary to clean the original position of the upper half of the second steel drum 25. When the steel cage is tied, its height should also be higher than the top surface of the upper half of the second steel drum 25.

[0101] In steps S400 and S600, since the second steel barrel 25 is tiltedly placed in the first cast section 21, and after the concrete of the first cast section 21 solidifies, it is not easy to loosen with the second steel barrel 25, and when pulling it, it is not possible to apply a vertical pulling force to it, but it takes time to apply a force along its axial direction, otherwise it will damage the first cast section 21. When building a TY pier on water, the simplest way to apply a pulling force is to use a crane, so it is necessary to change the force applied by the crane. The specific operation is: a bracket is set at one end of the first cast section 21, and the bracket is fixedly connected to the exposed steel bars on the first cast section 21, and a pulley is set on the bracket. The position of the pulley is set on the extension line of the axis of the second steel barrel 25, and the steel cable of the crane passes around the pulley and is connected to the inside of the second steel barrel 25, and the second steel barrel 25 is pulled out of the first cast section 21 along its axial direction by the crane.

[0102] In the process of pulling out the second steel drum 25, since the second steel drum 25 is in an inclined state, it will shake due to gravity after being pulled out, and the working space on the pier body 2 is limited, which poses a risk of causing harm to the operator. Therefore, a temporary support structure is set at the hole where the second steel drum 25 is pulled out. A fulcrum is fixed at the bottom of the temporary support structure, and a support plate rotating around it is set on the fulcrum. A buffer assembly is set between the support plate and the bracket of the first casting section 21, so that the second steel drum 25 falls on the support plate after being pulled out, and then the lifting point of the second steel drum 25 is adjusted to hang it down from the first casting section 21.

[0103] Example 2

[0104] like Fig.10 , 11 As shown, in Example 1, the first steel drum 24 and the second steel drum 25 are difficult to remove during the disassembly process because they are bonded to the concrete and there is no gap between them. In this embodiment, the rest of the parts are the same as those in Example 1, except that: the first steel drum 24 is divided into at least three cylinders, including at least one first disassembly cylinder 241 and multiple later disassembly cylinders 242, and the two sides of the first disassembly cylinder 241 are connected with the later disassembly cylinder 242 by an oblique opening, and the openings of the oblique openings on both sides face the central axis, and the connection between the first disassembly cylinder 241 and the later disassembly cylinder 242 is also provided with a connecting plate 243 facing the inside, through which the first disassembly cylinder 241 and the later disassembly cylinder 242 are bolted together to form a complete cylindrical structure.

[0105] When removing it from the first cast section 21, the bolts between the first removal column 241 and the rear removal column 242 are removed. After the removal is completed, the first removal column 241 is knocked to separate it from the first cast section 21 toward the inside of the first steel drum 24, and then it is lifted out. Then, the rear removal column 242 is lifted out in the same way.

[0106] The second steel drum 25 has the same structural composition as the first steel drum 24 .

[0107] Example 3

[0108] The embodiment of the present invention provides a TY pier casting system for controlling hydration heat, comprising:

[0109] Cleaning module: used to determine the position of the pier body 2 on the cap 1 and the size of the bottom of the pier body 2, open a connecting groove downward along the bottom contour of the pier body 2 on the surface of the cap 1, and clean it;

[0110] Steel drum fixing module: used to set the first steel drum 24 in the center of the connecting groove, set the lower half of the second steel drum 25 on both sides of the first steel drum 24, and fix them;

[0111] The first casting module is used to form the pier body 2 according to the design size of the TY pier, and to cast the pier body 2 in sections until it is flush with the top of the first steel drum 24;

[0112] The second casting module is used to take out the lower half of the first steel drum 24 and the second steel drum 25, and cast the lower half of the first steel drum 24 and the second steel drum 25 at the original position in the pier body 2 to form the lower half of the first post-casting section 22 and the second post-casting section 23;

[0113] The third casting module is used to set the upper half of the second steel drum 25 on the plane of the cast part, continue to formwork the part above the first steel drum 24, and cast the pier body 2 in sections until it is flush with the top of the second steel drum 25;

[0114] The fourth casting module is used to take out the second steel drum 25 and cast the second steel drum 25 at the original position in the pier body 2 to form the upper half of the second post-casting section 23;

[0115] The fifth casting module is used to cast the inclined legs 3 and the cap beam 4 above the pier body 2 in sections in sequence to complete the casting of the entire TY pier.

[0116] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A TY pier casting method for controlling hydration heat, characterized in that: The following steps are involved: S100, determining the position of the pier body (2) on the cap (1) and the size of the bottom of the pier body (2), opening a connecting groove downward along the bottom contour of the pier body (2) on the surface of the cap (1), and cleaning it; S200, a first steel barrel (24) is arranged at the center of the connecting groove, and the lower half of a second steel barrel (25) is arranged on both sides of the first steel barrel (24), and they are fixed; S300, partially supporting the formwork of the pier body (2) according to the design dimensions of the TY pier, and casting the pier body (2) in sections until it is flush with the top of the first steel drum (24); S400, taking out the lower half of the first steel drum (24) and the second steel drum (25), and casting the lower half of the first steel drum (24) and the second steel drum (25) at their original positions in the pier body (2), so as to form the lower half of the first post-casting section (22) and the second post-casting section (23); S500, placing the upper half of the second steel drum (25) on the plane of the cast part, continuing to formwork the part above the first steel drum (24), and casting the pier body (2) in sections until it is flush with the top of the second steel drum (25); S600, taking out the second steel drum (25), and casting the second steel drum (25) at the original position in the pier body (2) to form the upper half of the second post-casting section (23); S700, sequentially casting the inclined legs (3) and the cap beam (4) above the pier body (2) in sections to complete the casting of the entire TY pier.

2. A TY pier casting method for controlling hydration heat according to claim 1, characterized in that: In step S200, the first steel drum (24) arranged at the bottom of the pier body (2) is shorter than the second steel drums (25) on both sides thereof, and after the installation is completed, the tops of the two are pre-fixed; The second steel barrels (25) on both sides are inclined toward the middle to control the distance between them and the boundary of the pier body (2), thereby preventing the boundary of the pier body (2) from being too thin, thereby preventing quality problems from occurring during pouring.

3. A TY pier casting method for controlling hydration heat according to claim 2, characterized in that: Step S200 specifically includes the following steps: S201, vertically placing the first steel drum (24) to ensure that its bottom surface is in close contact with the center of the connecting groove; S202, determining the inclination degree of the second steel drum (25) according to the size of the pier body (2), and setting the bottom of the second steel drum (25) to be an oblique opening according to the inclination degree; S203, the lower halves of the two second steel drums (25) are arranged symmetrically and tilted toward the middle relative to the first steel drum (24), ensuring that their bottom surfaces are in close contact with the bottom surface of the connecting groove; S204, setting up a steel frame on the top of the first steel drum (24) and the lower half of the second steel drum (25) to temporarily fix them; S205, roughening the surface of the connection groove except for the locations where the first steel drum (24) and the second steel drum (25) are installed, and anchoring steel bars are installed.

4. A TY pier casting method for controlling hydration heat according to any one of claims 1 to 3, characterized in that: In step S300, in order to facilitate heat dissipation of the pier body (2) during the pouring process, the pouring is carried out in sections, and the specific operations are as follows: S301, completing the bundling of steel bars and the erection of the bottommost formwork according to the design dimensions of the first pouring section of the pier body (2), and connecting the bundled steel bars with the anchor steel bars in the connection groove; S302, pouring the bottom layer of concrete of the pier body (2), vibrating and curing, and then supporting the formwork upwards; S303, repeat step S302 until the casting is flush with the top of the first steel drum (24), and then remove the formwork.

5. A TY pier casting method for controlling hydration heat according to claim 4, characterized in that: In step S302, after the bottom of the pier body (2) is poured to a reliable height, the first steel drum (24) and the lower half of the second steel drum (25) are ensured not to fall over, and the fixing brackets of the two are removed to prevent the brackets from affecting the subsequent pouring.

6. A TY pier casting method for controlling hydration heat according to any one of claims 1 to 3, characterized in that: In steps S400 and S600, the method for pulling the second steel drum (25) out of the first cast section (21) is as follows: a bracket is arranged at one end of the first cast section (21), the bracket is fixedly connected to the exposed steel bars on the first cast section (21), and a pulley is arranged on the bracket; the position of the pulley is arranged on the extension line of the axis of the second steel drum (25), and the steel cable of the crane passes around the pulley and is connected to the inside of the second steel drum (25), and the second steel drum (25) is pulled out of the first cast section (21) along its axial direction by the crane.

7. A TY pier casting method for controlling hydration heat according to claim 6, characterized in that: A temporary support structure is arranged at the hole through which the second steel drum (25) is pulled out, a fulcrum is fixed at the bottom of the temporary support structure, and a support plate rotating around the fulcrum is arranged on the fulcrum, and a buffer assembly is arranged between the support plate and the bracket of the first pouring section (21), so that the second steel drum (25) falls on the support plate after being pulled out, and then the lifting point of the second steel drum (25) is adjusted to hang it down from the first pouring section (21).

8. A TY pier casting method for controlling hydration heat according to any one of claims 1 to 3, characterized in that: The first steel barrel (24) and the second steel barrel (25) are both hollow cylindrical structures, made of steel material with good thermal conductivity, and are composed of two semicircular cylindrical surfaces. The outer surfaces of the two cylindrical surfaces are smooth, and connecting plates are provided on the two connecting surfaces facing inward. The connecting plates on the two cylindrical surfaces are connected by bolts to splice them into a cylindrical shape.

9. A TY pier casting method for controlling hydration heat according to any one of claims 1 to 3, characterized in that: The first steel barrel (24) is a hollow cylindrical structure, made of a steel material with good thermal conductivity, and is divided into at least three cylindrical surfaces, including at least one first-disassembly cylindrical surface (241) and a plurality of rear-disassembly cylindrical surfaces (242). The two sides of the first-disassembly cylindrical surface (241) and the rear-disassembly cylindrical surface (242) are arranged to be connected with an oblique opening, and the openings of the oblique openings on both sides face the central axis. A connecting plate (243) is also arranged inwardly at the connection between the first-disassembly cylindrical surface (241) and the rear-disassembly cylindrical surface (242), and the first-disassembly cylindrical surface (241) and the rear-disassembly cylindrical surface (242) are bolted together to form a complete cylindrical structure through the connecting plate (243); When removing it from the first cast section (21), the bolts between the first removed column surface (241) and the rear removed column surface (242) are removed. After the removal is completed, the first removed column surface (241) is knocked to separate it from the first cast section (21) toward the inside of the first steel drum (24). After the separation is completed, it is lifted out; and the rear removed column surface (242) is then lifted out in the same manner. The second steel drum (25) has the same structural composition as the first steel drum (24).

10. A TY pier casting system for controlling hydration heat, used to implement a TY pier casting method for controlling hydration heat as claimed in any one of claims 1 to 9, characterized in that: include: Cleaning module: used to determine the position of the pier body (2) on the cap (1) and the size of the bottom of the pier body (2), open a connecting groove downward along the bottom contour of the pier body (2) on the surface of the cap (1), and clean it; Steel drum fixing module: used to arrange a first steel drum (24) at the center of the connecting groove, arrange the lower half of the second steel drum (25) on both sides of the first steel drum (24), and fix them; The first casting module is used to partially form the pier body (2) according to the design size of the TY pier, and to cast the pier body (2) in sections until it is flush with the top of the first steel barrel (24); The second casting module is used to take out the lower half of the first steel drum (24) and the second steel drum (25), and cast the lower half of the first steel drum (24) and the second steel drum (25) at their original positions in the pier body (2) to form the lower half of the first post-casting section (22) and the second post-casting section (23); The third casting module is used to set the second steel drum (25) again on the plane of the cast part, continue to support the part above the first steel drum (24), and cast the pier body (2) in sections until it is flush with the top of the second steel drum (25); The fourth casting module is used to take out the second steel drum (25), and cast the second steel drum (25) at the original position in the pier body (2) to form the upper half of the second post-casting section (23); The fifth casting module is used to cast the inclined legs (3) and the cap beam (4) above the pier body (2) in sections in sequence to complete the casting of the entire TY pier.

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