Formwork for diaphragm wall guide wall pouring and diaphragm wall guide wall pouring method

Abstract

The application provides a template for pouring a diaphragm wall guide wall of an underground continuous wall and a method for pouring the diaphragm wall guide wall, and relates to the technical field of continuous wall guide wall construction. The template for pouring the diaphragm wall guide wall of the underground continuous wall comprises a plurality of templates and a support assembly for supporting the templates, the support assembly comprises at least one pair of clamping units and a spacing adjustment unit, and one spacing adjustment unit is arranged in each pair of clamping units; each clamping unit comprises a connecting rod and a plurality of clamping claws arranged on the same side of the connecting rod, each clamping unit is connected with the template via the clamping claws and connected with the spacing adjustment unit via the connecting rod; the spacing adjustment unit can drive the connecting rods to move close to or away from each other to adjust the spacing between the relatively arranged templates. The application has the effect of facilitating the adjustment of the spacing between the templates.

Description

Technical Field

[0001] This application relates to the field of continuous wall guide wall construction technology, and in particular to a formwork for pouring underground continuous wall guide walls, as well as a method for pouring underground continuous wall guide walls. Background Technology

[0002] A diaphragm wall is a continuous reinforced concrete wall constructed underground. It can serve as a water-cutting, seepage-proof, load-bearing, and water-retaining structure, while the guide wall is the key to ensuring the accurate positioning and trenching quality of the diaphragm wall.

[0003] The construction of the guide wall generally involves excavating the guide wall trench, tying steel bars along the guide wall trench, applying a release agent to the casting formwork, and then connecting multiple casting formworks with corresponding supports to form a continuous casting formwork. The process of connecting the casting formworks with the corresponding supports is carried out within the guide wall trench. The assembly space is small, making assembly operations difficult. Furthermore, the size of the supports is either not adjustable or can only be adjusted individually, which is not conducive to adjusting the spacing between the relatively set formworks and demolding.

[0004] Therefore, a formwork for casting guide walls of underground continuous walls is needed. Summary of the Invention

[0005] To address the issues of difficulty in adjusting the spacing between relatively set templates and difficulty in demolding, the first aspect of this application provides a template for casting guide walls of underground continuous walls.

[0006] The template for casting a guide wall of a diaphragm wall provided in the first aspect of this application adopts the following technical solution: A template for casting a guide wall of a diaphragm wall includes multiple templates and a support assembly for supporting the templates. The support assembly includes at least one pair of clamping units and a spacing adjustment unit. Each pair of clamping units includes a spacing adjustment unit. Each clamping unit includes a connecting rod and multiple jaws disposed on the same side of the connecting rod. Each clamping unit is connected to the template via the jaws and to the spacing adjustment unit via the connecting rod. The spacing adjustment unit can drive the connecting rod to move closer or further away from each other to achieve spacing adjustment between the relatively arranged templates.

[0007] By adopting the above technical solution, the spacing adjustment unit can drive multiple grippers to move, thereby adjusting the spacing between the relatively set templates. This makes the spacing adjustment between the templates more convenient and faster, enabling the templates used for casting underground continuous wall guide walls to adapt to the construction of guide walls of different specifications. It also facilitates the demolding after casting, improving demolding efficiency and saving construction time.

[0008] Specifically, the spacing adjustment unit includes a support, a scissor mechanism, and a driver. One end of the scissor mechanism is connected to the support, and the outer hinge portion of the scissor mechanism is provided with a hinge shaft to connect to the connecting rod via the hinge shaft. The driver is located on the support and connected to the scissor mechanism. The driver can drive the scissor mechanism to extend and retract, so that when the scissor mechanism extends, the hinge shaft pulls the connecting rods closer together, and when the scissor mechanism retracts, the hinge shaft pushes the connecting rods away from each other.

[0009] By adopting the above technical solution, the horizontal movement of each hinge axis on the same side of the scissor mechanism can be kept consistent during extension and retraction, thereby ensuring that the angle between the template and the horizontal plane does not change during movement.

[0010] Specifically, the scissor lift mechanism includes multiple pairs of outer scissor arms and multiple pairs of inner scissor arms. The middle part of each outer scissor arm is hinged to the middle part of the corresponding inner scissor arm, and the end of each pair of outer scissor arms is hinged to the end of a corresponding pair of inner scissor arms. The hinge joints at the ends are provided with hinge shafts connecting the outer and inner scissor arms. The support base is provided with a limiting plate, and the limiting plate is provided with a limiting groove. The two hinge shafts at one end of the scissor lift mechanism connected to the support base are moving shafts. The two ends of each moving shaft are disposed in the corresponding limiting grooves. The driver can drive the moving shafts to move in the limiting grooves. Furthermore, each moving shaft is provided with a moving wheel at both ends.

[0011] By adopting the above technical solution, the scissor mechanism is configured to include multiple pairs of external scissor arms and multiple pairs of internal scissor arms, which can enhance the overall strength of the scissor mechanism and make it less prone to tilting during extension and retraction, thereby ensuring the accuracy of adjustment. The moving wheels at both ends of the moving shaft can realize the extension and retraction adjustment of the scissor mechanism.

[0012] Specifically, the actuator includes a first hydraulic cylinder and a second hydraulic cylinder, each of which is connected to one of the hinge shafts to drive the moving shaft to move in the limiting groove. The extension and retraction rates and extension and retraction strokes of the first hydraulic cylinder and the second hydraulic cylinder are the same.

[0013] By adopting the above technical solution, the hinge shafts on both sides of the scissor mechanism move the same distance in the horizontal direction when the mechanism extends and retracts, so that the relatively set templates can move closer or further away synchronously, thereby facilitating the control of the distance between the template and the groove surface of the guide wall.

[0014] Specifically, the hinge shaft connected to the connecting rod on the scissor mechanism is a push-pull shaft, the connecting rod is provided with a slide groove extending along the length direction of the connecting rod, the spacing adjustment unit also includes a slider, the slider is disposed in the slide groove and connected to the push-pull shaft, and the slider can move in the slide groove.

[0015] By adopting the above technical solution, when the scissor mechanism retracts, the slider can move in the groove following the hinge shaft, thereby ensuring that the connecting rod does not deform when the scissor mechanism extends or retracts, thus ensuring the accuracy of adjustment.

[0016] Specifically, the slider includes a hinge rod, a base block, a push wheel assembly, and a pull wheel assembly; the slide groove forms a push abutment surface and a pull abutment surface; one end of the hinge rod is fixedly connected to the base block, and the other end is hinged to the push-pull shaft; the push wheel assembly and the pull wheel assembly are both disposed on the base block, and the push wheel assembly abuts against the push abutment surface, and the pull wheel assembly abuts against the pull abutment surface.

[0017] By adopting the above technical solution, the slider can slide in the groove, and the slider can limit the linkage in the horizontal direction. This makes the movement of the linkage in the horizontal direction related to the scissor mechanism, thereby ensuring that the template is not easy to move after it is adjusted to the correct position, so as to ensure that the cast guide wall meets the set dimensions.

[0018] Specifically, it also includes a self-adjusting component, which includes a laser emitter, a laser detector, a telescopic rod, a controller, and a telescopic actuator. One end of the telescopic rod is connected to the hinge rod located on one side of the scissor mechanism, and the other end of the telescopic rod is connected to the hinge rod located on the other side of the scissor mechanism.

[0019] The hinge rod connected to the lower end of the scissor mechanism is a reference rod. The reference rod is equipped with a laser emitter, which can emit laser light in a vertical direction. The hinge rods on the same side as the reference rod are equipped with light-transmitting holes corresponding to the laser emitters. A laser detector is provided at the port of the light-transmitting hole facing the laser emitter. The laser detector can detect the landing point of the laser on the laser detector. The laser detector is electrically connected to the controller to transmit the landing point position information of the laser to the controller. The controller is configured to control the extension and retraction of the telescopic rod according to the landing point position information.

[0020] By adopting the above technical solution, the offset of the hinge rod, that is, the deformation of the scissor mechanism, can be detected during the concrete pouring process. The controller can then drive the telescopic rod to extend or retract based on the deformation of the scissor mechanism, thereby compensating for and correcting the deformation of the scissor mechanism to ensure the verticality of the template.

[0021] Specifically, the telescopic rod includes a fixed rod, a movable rod, and a screw. One end of the fixed rod is hinged to the corresponding hinge rod. A rotating cavity suitable for accommodating the screw is formed inside the fixed rod. An internal thread structure matching the screw is provided on one end of the movable rod near the fixed rod. One end of the screw is located in the rotating cavity, and the other end mates with the internal thread structure. A transmission gear and a rotating bearing are provided on the end of the screw located in the rotating cavity, and a thrust ball bearing is provided between the end of the screw located in the rotating cavity and the sealed end of the rotating cavity. A transmission window is opened on the fixed rod at a position corresponding to the transmission gear. The telescopic actuator can pass through the transmission window and connect to the transmission gear to drive the screw to rotate.

[0022] By adopting the above technical solution, the moving rod and the fixed rod can be moved closer or further apart by rotating the screw, thereby realizing the extension and retraction of the telescopic rod.

[0023] Specifically, the clamping unit further includes multiple horizontal bars, which are disposed on the connecting rod and whose length direction is perpendicular to that of the connecting rod. Both ends of the horizontal bars are provided with grippers. Each template includes a plate surface, multiple horizontal ribs and multiple vertical ribs. The multiple horizontal ribs and multiple vertical ribs are connected to form a support frame, and the plate surface is disposed on the support frame. The grippers engage with the vertical ribs, and the grippers are provided with hanging plates. The horizontal ribs are provided with hanging interfaces that match the hanging plates.

[0024] By adopting the above technical solution, the template can have sufficient strength and facilitate the snap-fit ​​installation of the template and the clamp.

[0025] Specifically, the receiving seat is also provided with a movable wheel and a lifting insertion rod. The lifting insertion rod can move up and down, and when the lifting insertion rod moves down, it can be inserted into the soil. The movable wheel is located at the bottom of the receiving seat.

[0026] By adopting the above technical solution, it is possible to fix the formwork used for casting the guide wall of the underground continuous wall.

[0027] The second aspect of this application provides a method for casting a guide wall for a diaphragm wall.

[0028] The method for casting a guide wall for a diaphragm wall provided in the second aspect of this application adopts the following technical solution: A method for casting a guide wall for a diaphragm wall includes the following steps:

[0029] S1. Excavate the guide wall trench and tie the reinforcing bars along the guide wall trench;

[0030] S2. Install the formwork for casting the guide wall of the underground continuous wall as described in the above technical solution, and place the formwork for casting the guide wall of the underground continuous wall into the guide wall trench;

[0031] S3. Apply a release agent to the surface of the template in the template for casting the guide wall of the underground continuous wall;

[0032] S4. Adjust the spacing between the relatively arranged templates in the template for pouring the underground continuous wall guide wall, and pour concrete;

[0033] S5. After the concrete has solidified, reduce the spacing between the relatively set templates in the template for pouring the guide wall of the underground continuous wall, move the template for pouring the guide wall of the underground continuous wall to the next pouring position, and repeat steps S3 and S4.

[0034] By adopting the above technical solution, it is easy to install and adjust the formwork for the diaphragm wall guide wall pouring, so as to adapt to the construction of guide walls of different sizes, and to facilitate the demolding and move the diaphragm wall guide wall pouring formwork to the next pouring position, thereby improving construction efficiency and reducing the construction period.

[0035] In summary, this application includes at least one of the following beneficial effects:

[0036] 1. The spacing adjustment unit can synchronously drive multiple grippers to move, so as to adjust the spacing between the relatively set templates, making the spacing adjustment between the templates more convenient and faster. This allows the templates for the construction of underground continuous wall guide walls to adapt to the construction of guide walls of different specifications, and facilitates the demolding after pouring, thereby improving demolding efficiency and saving construction time.

[0037] 2. It facilitates the installation and adjustment of formwork for the construction of diaphragm wall guide walls, thus adapting to the construction of guide walls of different sizes. It also facilitates formwork removal and allows the formwork to be moved to the next pouring position, thereby improving construction efficiency and reducing the construction period. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural diagram of the formwork for casting the guide wall of the underground continuous wall in this application;

[0039] Figure 2 yes Figure 1Enlarged view of region A in the middle;

[0040] Figure 3 This is a top view of the formwork for casting the guide wall of the underground continuous wall in this application;

[0041] Figure 4 yes Figure 3 Enlarged view of region B in the middle;

[0042] Figure 5 yes Figure 3 A cross-sectional view along the CC direction;

[0043] Figure 6 yes Figure 5 Enlarged view of region E in the middle;

[0044] Figure 7 yes Figure 3 A cross-sectional view along the DD direction;

[0045] Figure 8 yes Figure 7 Enlarged view of region G in the middle;

[0046] Figure 9 yes Figure 7 Enlarged view of region F in the middle;

[0047] Figure 10 yes Figure 9 A cross-sectional view of the self-adjusting component after being cut along the HH direction.

[0048] Explanation of reference numerals in the attached drawings: 1. Template; 11. Board surface; 12. Horizontal rib; 121. Hanging interface; 13. Vertical rib; 2. Support assembly; 21. Clamping unit; 211. Connecting rod; 2111. Slide groove; 21111. Pushing contact surface; 21112. Pulling contact surface; 212. Gripper; 2121. Hanging plate; 213. Horizontal bar; 22. Spacing adjustment unit; 221. Support seat; 2211. Limiting upright plate; 2212. Limiting groove; 2213. Moving wheel; 2214. Lifting insertion rod; 222. Scissor mechanism; 2221. Hinge shaft; 22 22. Outer scissor arm; 2223. Inner scissor arm; 2224. Sliding wheel; 223. Driver; 2231. First hydraulic cylinder; 2232. Second hydraulic cylinder; 224. Slider; 2241. Hinge rod; 22411. Light-transmitting hole; 2242. Base block; 2243. Push wheel assembly; 2244. Pull wheel assembly; 3. Self-adjusting assembly; 31. Laser emitter; 32. Laser detector; 33. Telescopic rod; 331. Fixed rod; 3311. Rotating cavity; 3312. Transmission window; 332. Moving rod; 333. Screw; 3331. Transmission gear; 34. Telescopic driver; 4. Rotary bearing; 5. Thrust ball bearing. Detailed Implementation

[0049] Figure 1 This is a three-dimensional structural diagram of the formwork used for casting the guide wall of the underground continuous wall, as described in this application. Figure 2 yes Figure 1 A magnified view of region A in the middle. See also... Figure 1 and Figure 2 The template for casting the guide wall of the underground continuous wall provided in the first aspect of this application includes: multiple templates 1 and a support assembly 2 for supporting the templates 1, wherein the support assembly 2 includes at least a pair of clamping units 21 and a spacing adjustment unit 22 that matches the pair of clamping units 21; each clamping unit 21 includes a connecting rod 211 and multiple grippers 212 provided on the same side of the connecting rod 211, each clamping unit 21 is connected to the template 1 via the grippers 212 and connected to the spacing adjustment unit 22 via the connecting rod 211; and the spacing adjustment unit 22 can drive the connecting rod 211 to move closer or further away from each other, so as to realize the spacing adjustment between the relatively arranged templates 1.

[0050] The above design allows the spacing adjustment unit 22 to simultaneously drive multiple grippers 212 to move, thereby moving the relatively arranged templates 1 closer together or further apart, thus adjusting the spacing between the templates 1 more conveniently and quickly. When the templates 1 move closer together, the distance between the templates 1 and the groove surface of the guide wall increases, resulting in a thicker guide wall; when the templates 1 move further apart, the distance between the templates 1 and the groove surface of the guide wall decreases, resulting in a thinner guide wall. This design can accommodate the construction of guide walls of different specifications. After casting, the spacing adjustment unit can move the relatively arranged templates 1 closer together to achieve rapid demolding, thereby improving demolding efficiency and saving construction time.

[0051] Figure 3 This is a top view of the formwork used for casting the guide wall of the underground diaphragm wall according to this application, specifically, as shown in the figure. Figure 1 and Figure 3As shown, the spacing adjustment unit 22 can be configured to include a support 221, a scissor mechanism 222, and a driver 223. One end of the scissor mechanism 222 is connected to the support 221, and the outer hinge portion of the scissor mechanism 222 is provided with a hinge shaft 2221 so that the hinge shaft 2221 is connected to the connecting rod 211. The driver 223 is provided on the support 221 and connected to the scissor mechanism 222 so as to drive the scissor mechanism 222 to extend and retract. When the scissor mechanism 222 extends, the hinge shaft 2221 can pull the connecting rod 211 closer to each other. When the scissor mechanism 222 shortens, the hinge shaft 2221 can push the connecting rod 211 away from each other, thereby realizing the spacing adjustment between the templates 1. When the scissor mechanism 222 extends and retracts, the amount of movement of each hinge shaft 2221 on the same side in the horizontal direction can be kept consistent, thereby ensuring that the angle between the template 1 and the horizontal plane does not change when the template 1 moves.

[0052] See Figure 1 The scissor lift mechanism 222 can be specifically configured to include multiple outer scissor lift arms 2222 and multiple inner scissor lift arms 2223. The lengths of each outer scissor lift arm 2222 and inner scissor lift arm 2223 are the same, and the middle part of each outer scissor lift arm 2222 is hinged to the middle part of the corresponding inner scissor lift arm 2223. The end of one pair of outer scissor lift arms 2222 is hinged to the end of the corresponding pair of inner scissor lift arms 2223. The hinge point at the end is also provided with a hinge shaft 2221 connecting the outer scissor lift arm 2222 and the inner scissor lift arm 2223. This configuration enables the scissor lift mechanism 222 to have higher strength and is less prone to overall tilting, so as to ensure sufficient accuracy in adjusting the template 1.

[0053] Figure 4 yes Figure 3 Enlarged view of region B in the middle. Figure 5 yes Figure 3 Cross-sectional view in the CC direction, see Figure 4 and 5 Specifically, a limiting plate 2211 needs to be provided on the receiving seat 221, and a limiting groove 2212 needs to be provided on the limiting plate 2211. Two hinge shafts 2221 at one end of the scissor mechanism 222 connected to the receiving seat 221 are moving shafts, with both ends of each moving shaft located in the corresponding limiting groove 2212. The driver 223 can drive the moving shafts to move within the limiting groove 2212 to achieve the extension and retraction adjustment of the scissor mechanism 222. This allows the templates 1 to move closer or further apart during the extension and retraction of the scissor mechanism 222, thus adjusting the spacing between the templates 1. It can be understood that, as... Figure 1As shown, sliding wheels 2224 can be provided at both ends of the moving shaft to facilitate the movement of the moving shaft driven by the driver 223. A groove can be provided on the receiving seat 221 to accommodate the sliding wheels 2224, so that the sliding wheels 2224 can move in the groove. This can prevent the moving shaft from moving axially upward, which would cause the scissor mechanism 222 to wobble in the horizontal position and cause the formwork 1 to wobble during the concrete pouring process.

[0054] Specifically, such as Figure 3 As shown, the actuator 223 can be configured to include a first hydraulic cylinder 2231 and a second hydraulic cylinder 2232. One end of the first hydraulic cylinder 2231 and the second hydraulic cylinder 2232 are hinged to the receiving seat 221, and the other end of each is connected to a hinge shaft 2221 or a moving shaft, so as to drive the moving shaft to move in the limiting groove 2212. The extension and retraction rates and extension and retraction strokes of the first hydraulic cylinder 2231 and the second hydraulic cylinder 2232 are the same. Combined with the scissor mechanism 222, which includes multiple outer scissor arms 2222 and multiple inner scissor arms 2223, the length of each outer scissor arm 2222 and inner scissor arm 2223 is... The design ensures that the hinges on the middle of each outer scissor arm 2222 are consistent and that the middle of the corresponding inner scissor arm 2223 is hinged. This means that when the scissor mechanism 222 retracts, the hinge shafts 2221 on both sides can move synchronously closer to or further away from the middle of the scissor mechanism 222, and the amount of movement relative to the middle of the scissor mechanism 222 is consistent. This allows the templates 1 connected to both sides of the scissor mechanism 222 to move simultaneously closer to or further away from the groove surface of their respective guide wall grooves when the scissor mechanism 222 extends or retracts, thus facilitating the adjustment of the distance between each template 1 and the groove surface of the corresponding guide wall groove.

[0055] Figure 6 yes Figure 5 See the enlarged view of region D in the middle. Figure 5 and Figure 6The hinge shaft 2221 of the scissor lift mechanism 222, which is connected to the connecting rod 211, is a push-pull shaft. The connecting rod 211 is provided with a groove 2111 extending along the length direction of the connecting rod 211. The spacing adjustment unit 22 also includes a slider 224, which is disposed in the groove 2111 and connected to the push-pull shaft. The slider 224 can move within the groove 2111. It is understood that there need to be at least two push-pull shafts on the same side of the scissor lift mechanism 222, and at least one corresponding slider 224 in the groove 2111. There are two sliders 224. When the scissor mechanism 222 retracts, the slider 224 can move up and down in the slide groove 2111 following the hinge shaft 2221 (push-pull shaft). However, the amount of movement of the slider 224 in the horizontal direction is consistent. Since there are at least two sliders 224 in the slide groove 2111, the push-pull shaft can push the slider 224, and the slider 224 can push the connecting rod 211 to translate. This ensures that the angle between the connecting rod 211 and the template 1 and the horizontal plane does not change after adjustment, thus ensuring the accuracy of adjustment.

[0056] Reference Figure 6 The slider 224 can be specifically configured to include a hinge rod 2241, a base block 2242, a push wheel assembly 2243, and a pull wheel assembly 2244; and the slide groove 2111 forms a push abutment surface 21111 and a pull abutment surface 21112; one end of the hinge rod 2241 is fixedly connected to the base block 2242, and the other end is hinged to the push-pull shaft; the push wheel assembly 2243 and the pull wheel assembly 2244 are both provided on the base block 2242, and the push wheel assembly 2243 and the push abutment surface are connected to each other. When the pull wheel assembly 2244 abuts against the pull abutting surface 21112, the abutting surface between the pull wheel assembly and the corresponding abutting surface allows the slider 224 and the slide groove 2111 to slide relative to each other without shaking. This allows the horizontal movement of the connecting rod 211 to be related to the scissor mechanism 222, ensuring that the template 1 does not easily move after being adjusted to the correct position, thus ensuring that the cast guide wall meets the set dimensions.

[0057] Figure 7 yes Figure 3 A cross-sectional view along the DD direction, specifically, see [link to cross-sectional view]. Figure 1 and Figure 7 The template for casting the guide wall of the underground continuous wall in this application also includes a self-adjusting component 3, which can be configured to include a laser emitter 31, a laser detector 32, a telescopic rod 33, a controller, and a telescopic actuator 34.

[0058] Figure 8 yes Figure 7 A magnified view of region G in the middle, as shown below. Figure 7 and Figure 8As shown, one end of the telescopic rod 33 is connected to the hinge rod 2241 on one side of the scissor mechanism 222, and the other end of the telescopic rod 33 is connected to the hinge rod 2241 on the other side of the scissor mechanism 222. The hinge rod 2241 connected to the lower end of the scissor mechanism 222 is a reference rod, and a laser emitter 31 is provided on the reference rod. The laser emitter 31 can emit laser in the vertical direction, and each hinge rod 2241 on the same side as the reference rod is provided with a light-transmitting hole 22411 corresponding to the laser emitter 31. It should be noted that the correspondence here means that in the state where no concrete is poured (the scissor mechanism 222 is not subjected to the horizontal pressure of the template 1), all the light-transmitting holes 22411 on the same side of the scissor mechanism 222 are on the same vertical line, so that the laser emitted by the laser emitter 31 can pass through all the light-transmitting holes 22411.

[0059] In addition, each of the light-transmitting holes 22411 is equipped with a laser detector 32 at the end facing the laser emitter 31. The laser detector 32 is configured to detect the point where the laser falls on the laser detector 32. The laser detector 32 is electrically connected to the controller so as to transmit the laser's point of impact information to the controller. The controller is configured to control the extension and retraction of the telescopic rod 33 according to the point of impact information. The laser detector 32 can be a photoelectric dot matrix acquisition surface.

[0060] During the specific adjustment process, multiple hinge rods 2241 are checked one by one from the direction closest to the reference rod to the direction furthest from the reference rod. If the laser emitted by the laser detector 32 can just pass through the light-transmitting hole 22411, it indicates that the hinge rod 2241 has not shifted, that is, the part of the scissor mechanism 222 corresponding to the hinge rod 2241 has not been deformed by the pressure of the template 1. If the laser emitted by the laser detector 32 falls on the side of the laser detector 32 that is biased towards the template 1, it indicates that the hinge rod 2241 has shifted, that is... The portion of the scissor mechanism 222 corresponding to the hinge rod 2241 is deformed by the pressure of the template 1. Therefore, it is necessary to control the extension of the telescopic rod 33, and the extension amount should be consistent with the distance between the position of the laser falling on the laser detector 32 and the light-transmitting hole 22411, in order to compensate for the compressive deformation of the scissor mechanism 222. It should be noted that if a certain telescopic rod 33 needs to be extended, all telescopic rods 33 above that telescopic rod 33 need to be extended synchronously with that telescopic rod 33 to facilitate adjustment and reduce the resistance of the telescopic rod 33 during extension.

[0061] Figure 9 yes Figure 7 A magnified view of region F in the middle, specifically, as shown below. Figure 7 and Figure 9As shown, the telescopic rod 33 can be configured to include a fixed rod 331, a movable rod 332, and a screw 333. One end of the fixed rod 331 is hinged to the corresponding hinge rod 2241. A rotating cavity 3311 suitable for accommodating the screw 333 is formed inside the fixed rod 331. The movable rod 332 has an internal thread structure matching the screw 333 at one end near the fixed rod 331. One end of the screw 333 is located in the rotating cavity 3311, and the other end is engaged with the internal thread structure. A transmission gear 3331 and a rotating bearing 4 are provided on the end of the screw 333 located in the rotating cavity 3311. Furthermore, a thrust ball bearing 5 is provided between the end of the screw 333 located in the rotating cavity 3311 and the sealing end of the rotating cavity 3311, so that the screw 333 can rotate in the rotating cavity 3311, and the thrust ball bearing 5 can bear the pressure of the screw 333 on the sealing end of the rotating cavity 3311 when the telescopic rod 33 is extended; a transmission window 3312 is provided on the fixed rod 331 at a position corresponding to the transmission gear 3331, and the telescopic driver 34 can pass through the transmission window 3312 and connect with the transmission gear 3331 to drive the screw 333 to rotate.

[0062] Specifically, see Figure 1 The clamping unit 21 also includes multiple horizontal bars 213, which are mounted on the connecting rod 211 and are perpendicular to the length direction of the connecting rod 211. Each end of the horizontal bar 213 is provided with a gripper 212. Each template 1 includes a panel 11, multiple horizontal stiffeners 12, and multiple vertical stiffeners 13. The horizontal stiffeners 12 and vertical stiffeners 13 are connected to form a support frame, and the panel 11 is mounted on the support frame. The gripper 212 engages with the vertical stiffeners 13, and the gripper 212 is provided with a hanging plate 212. 1. The horizontal stiffener 12 is provided with a hanging interface 121 that matches the hanging plate 2121, so that the template 1 can be hung on the clamp 212 through the cooperation of the hanging interface 121 and the hanging plate 2121, making the installation of the template 1 more convenient. The setting of the horizontal stiffener 12 and the longitudinal stiffener 13 can make the overall structural strength of the template 1 higher. The connecting rod 211 and the scissor mechanism 222 can support the template 1 during the pouring of the guide wall, which can reduce the deformation and displacement of the template 1 during the pouring process.

[0063] In addition, see Figure 5 The support seat 221 is also equipped with a movable wheel 2213 and a lifting insertion rod 2214. The movable wheel 2213 facilitates the movement of the support seat 221, thereby facilitating the movement of the formwork for the diaphragm wall guide wall pouring to the next position after demolding. The lifting insertion rod 2214 can be connected to a hydraulic cylinder, which is connected to the support seat 221, so that the lifting insertion rod 2214 can be driven to rise and fall through the hydraulic cylinder. When the lifting insertion rod 2214 moves down, it can be inserted into the soil, thereby fixing the formwork for the diaphragm wall guide wall pouring.

[0064] See Figure 1 The method for casting the guide wall of the underground continuous wall provided in the second aspect of this application includes the following steps: S1, excavating the guide wall trench and tying steel bars along the guide wall trench;

[0065] S2. Install the formwork for casting the guide wall of the underground continuous wall in the above technical solution, and put the formwork for casting the guide wall of the underground continuous wall into the guide wall trench. It should be noted that at this time, the scissor mechanism 222 should be extended to reduce the distance between the relatively set templates 1, so as to put the formwork for casting the guide wall of the underground continuous wall into the guide wall trench and to ensure that there is a sufficient gap between the template 1 and the reinforcing steel to facilitate the subsequent application of release agent on the template 1.

[0066] S3. Apply a release agent to the surface 11 of the template 1 in the template for casting the guide wall of the underground continuous wall. The release agent is existing technology and will not be described in detail here. Applying the release agent can facilitate the subsequent demolding work.

[0067] S4. Control the scissor mechanism 222 to shorten, thereby increasing the spacing between the relatively set templates 1, so as to adjust the spacing between the relatively set templates 1 in the template for pouring the guide wall of the underground continuous wall, so that the spacing between the template 1 and the groove surface of the corresponding guide wall groove can meet the set value (that is, to ensure that the thickness of the guide wall formed after pouring can meet the set value). After the adjustment is completed, pour concrete and wait for the concrete to cure.

[0068] S5. After the concrete has cured, control the scissor mechanism 222 to extend, thereby reducing the gap between the relatively set templates 1, so as to separate the templates 1 from the concrete and achieve demolding. After demolding, move the template for pouring the underground continuous wall guide wall to the next pouring position and repeat steps S3 and S4 until the entire guide wall is poured. It should be noted that after demolding, square timber supports need to be set between the poured guide walls to prevent the walls that have not been fully cured from collapsing. After moving to the next pouring position, it is necessary to ensure that there is still at least half a meter of overlap between the template 1 and the poured guide wall to ensure that the connection between the newly poured guide wall and the poured guide wall has sufficient connection strength.

[0069] The working principle of the formwork for casting the guide wall of the underground continuous wall in this application is as follows: The extension and retraction of the scissor mechanism 222 drives the connecting rod 211 connected to the scissor mechanism 222 to move. The connecting rod 211 is equipped with a gripper 212 connected to the template 1. Thus, the template 1 can be moved by the connecting rod 211, so as to adjust the spacing between the relatively set templates 1, that is, to adjust the gap between the template 1 and the corresponding guide wall groove surface, thereby adjusting the casting thickness of the guide wall. After the casting is completed, the extension of the scissor mechanism 222 allows the template 1 to move away from the cast guide wall, thereby achieving rapid demolding. Moreover, no manual labor is required to go down into the guide wall groove during demolding, which greatly saves manpower.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A formwork for casting a guide wall for a diaphragm underground wall, characterized in that, The system includes multiple templates (1) and a support assembly (2) for supporting the templates. The support assembly (2) includes at least one pair of clamping units (21) and a spacing adjustment unit (22). Each pair of clamping units (21) includes a spacing adjustment unit (22). Each clamping unit (21) includes a connecting rod (211) and multiple grippers (212) on the same side of the connecting rod (211). Each clamping unit (21) is connected to the template (1) via the grippers (212) and to the spacing adjustment unit (22) via the connecting rod (211). The spacing adjustment unit (22) can drive the connecting rod (211) to move closer or further away from each other to adjust the spacing between the relatively arranged templates (1). The spacing adjustment unit (22) includes a support (221), a scissor mechanism (222), and a driver (223). One end of the scissor mechanism (222) is connected to the support (221), and the outer hinge portion of the scissor mechanism (222) is provided with a hinge shaft (2221) to connect with the connecting rod (211) via the hinge shaft (2221). The driver (223) is provided on the support (221) and connected to the scissor mechanism (222). The driver (223) can drive the scissor mechanism (222) to extend and retract, so that when the scissor mechanism (222) extends, the hinge shaft (2221) pulls the connecting rod (211) closer to each other, and when the scissor mechanism (222) retracts, the hinge shaft (2221) pushes the connecting rod (211) away from each other. The scissor lift mechanism (222) includes multiple pairs of outer scissor arms (2222) and multiple pairs of inner scissor arms (2223). The middle portion of each outer scissor arm (2222) is hinged to the middle portion of the corresponding inner scissor arm (2223). The end of each pair of outer scissor arms (2222) is hinged to the end of a corresponding pair of inner scissor arms (2223). A hinge shaft (2221) connecting the outer scissor arm (2222) and the inner scissor arm (2223) is provided at the hinge point of the end. The support seat (221) The device is provided with a limiting plate (2211) and a limiting groove (2212). The two hinge shafts (2221) at one end of the scissor mechanism (222) connected to the receiving seat (221) are moving shafts. The two ends of each moving shaft are set in the corresponding limiting groove (2212). The driver (223) can drive the moving shaft to move in the limiting groove (2212). Each moving shaft is also provided with a sliding wheel (2224) at both ends. The hinge shaft (2221) connected to the connecting rod (211) on the scissor mechanism (222) is a push-pull shaft. The connecting rod (211) is provided with a groove (2111) extending along the length direction of the connecting rod (211). The spacing adjustment unit (22) also includes a slider (224). The slider (224) is disposed in the groove (2111) and connected to the push-pull shaft. The slider (224) can move in the groove (2111). The slider (224) includes a hinge rod (2241), a base block (2242), a push wheel assembly (2243), and a pull wheel assembly (2244); the slide groove (2111) forms a push contact surface (21111) and a pull contact surface (21112); one end of the hinge rod (2241) is fixedly connected to the base block (2242), and the other end is hinged to the push-pull shaft; the push wheel assembly (2243) and the pull wheel assembly (2244) are both provided on the base block (2242), and the push wheel assembly (2243) abuts against the push contact surface (21111), and the pull wheel assembly (2244) abuts against the pull contact surface (21112).

2. The formwork for casting the guide wall of a diaphragm wall according to claim 1, characterized in that, The actuator (223) includes a first hydraulic cylinder (2231) and a second hydraulic cylinder (2232). The first hydraulic cylinder (2231) and the second hydraulic cylinder (2232) are each connected to a hinge shaft (2221) so as to drive the moving shaft to move in the limiting groove (2212). The extension rate and extension stroke of the first hydraulic cylinder (2231) and the second hydraulic cylinder (2232) are the same.

3. The formwork for casting the guide wall of a diaphragm wall according to claim 1, characterized in that, It also includes a self-adjusting component (3), which includes a laser emitter (31), a laser detector (32), a telescopic rod (33), a controller, and a telescopic actuator (34). One end of the telescopic rod (33) is connected to the hinge rod (2241) located on one side of the scissor mechanism (222), and the other end of the telescopic rod (33) is connected to the hinge rod (2241) located on the other side of the scissor mechanism (222). The hinge rod (2241) connected to the lower end of the scissor mechanism (222) is a reference rod. The reference rod is provided with the laser emitter (31). The laser emitter (31) can emit laser in the vertical direction. The hinge rod (2241) on the same side as the reference rod is provided with a light-transmitting hole (22411) corresponding to the laser emitter (31). The port of the light-transmitting hole (22411) facing the laser emitter (31) is provided with the laser detector (32). The laser detector (32) can detect the landing point of the laser on the laser detector (32). The laser detector (32) is electrically connected to the controller to transmit the landing point position information of the laser to the controller. The controller is configured to control the extension and retraction of the telescopic rod (33) according to the landing point position information.

4. The formwork for casting the guide wall of a diaphragm wall according to claim 3, characterized in that, The telescopic rod (33) includes a fixed rod (331), a movable rod (332), and a screw (333). One end of the fixed rod (331) is hinged to the corresponding hinge rod (2241). A rotating cavity (3311) suitable for accommodating the screw (333) is formed inside the fixed rod (331). One end of the movable rod (332) near the fixed rod (331) is provided with an internal thread structure that matches the screw (333). One end of the screw (333) is located in the rotating cavity (3311), and the other end is engaged with the internal thread structure. A transmission gear (3331) and a rotating bearing (4) are provided on one end of the rotating cavity (3311), and a thrust ball bearing (5) is provided between the end of the screw (333) located in the rotating cavity (3311) and the sealing end of the rotating cavity (3311); a transmission window (3312) is provided on the fixed rod (331) at a position corresponding to the transmission gear (3331), and the telescopic actuator (34) can pass through the transmission window (3312) and connect with the transmission gear (3331) to drive the screw (333) to rotate.

5. The formwork for casting the guide wall of a diaphragm wall according to claim 1, characterized in that, The clamping unit (21) further includes multiple horizontal bars (213), which are disposed on the connecting rod (211), and the length direction of the horizontal bars (213) is perpendicular to the length direction of the connecting rod (211). Both ends of the horizontal bars (213) are provided with the grippers (212). Each template (1) includes a plate surface (11), multiple horizontal ribs (12) and multiple vertical ribs (13). The multiple horizontal ribs (12) and the multiple vertical ribs (13) are connected to form a support frame. The plate surface (11) is disposed on the support frame. The clamp (212) is engaged with the longitudinal reinforcing bar (13), and the clamp (212) is provided with a hanging plate (2121). The transverse reinforcing bar (12) is provided with a hanging interface (121) that matches the hanging plate (2121). The receiving seat (221) is also provided with a moving wheel (2213) and a lifting insertion rod (2214). The lifting insertion rod (2214) can move up and down, and when the lifting insertion rod (2214) moves down, it can be inserted into the soil. The moving wheel (2213) is located at the bottom of the receiving seat (221).

6. A method for casting a guide wall for a diaphragm underground wall, characterized in that, Includes the following steps: S1. Excavate the guide wall trench and tie the reinforcing bars along the guide wall trench; S2. Install the formwork for casting the guide wall of the underground continuous wall as described in any one of claims 1 to 5, and place the formwork for casting the guide wall of the underground continuous wall into the guide wall trench; S3. Apply a release agent to the surface of the template in the template for casting the guide wall of the underground continuous wall; S4. Adjust the spacing between the relatively arranged templates in the template for pouring the underground continuous wall guide wall, and pour concrete; S5. After the concrete has solidified, reduce the spacing between the relatively set templates in the template for pouring the guide wall of the underground continuous wall, move the template for pouring the guide wall of the underground continuous wall to the next pouring position, and repeat steps S3 and S4.

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