A method for supporting formwork of post-casting strip of basement roof settlement

Abstract

A method for supporting formwork for a settlement post-casting strip of a basement roof slab relates to the technical field of formwork support for settlement post-casting strips, comprising calculating stress distribution at a post-casting strip to obtain a support position of the post-casting strip formwork and a support load value; installing a formwork structure; after the settlement and deformation of a surrounding main structure have become stable, adjusting the support load value of each post-casting strip formwork support position through a load application structure according to the calculated support load value; and casting the post-casting strip. The present invention can reduce the use of scaffolding support structure materials in an existing settlement post-casting strip support system, avoid the problem of occupying a large amount of materials and increasing project costs, and can adjust the support according to the stress distribution to effectively improve the casting quality.

Description

Technical Field

[0001] The invention relates to the technical field of supporting formwork for a settlement post-casting strip, and in particular to a method for supporting a formwork for a settlement post-casting strip of a basement roof. Background Art

[0002] The traditional basement roof settlement post-casting belt support system generally uses full-height scaffolding as the support structure. However, this practice has significant disadvantages: First, the scaffolding support system must be removed after the concrete pouring is completed and reaches the design strength, which leads to a long closed construction period for the post-casting belt. During this period, a large amount of scaffolding support structure materials are occupied, resulting in the scaffolding support structure materials being idle due to the inability to turn over in time, which undoubtedly increases the cost burden of the project.

[0003] In addition, during the pouring process of the settlement post-casting strip, there is also the problem of uneven stress distribution. Since the existing settlement post-casting strip support system lacks flexibility, it is difficult to adjust the support load according to the different distribution of stress, which often leads to the phenomenon of warping and leakage of slurry during the pouring process of the formwork, thus affecting the pouring quality. Therefore, the traditional support system is unable to cope with complex stress environments and is difficult to meet the requirements of high-quality construction.

[0004] In summary, the traditional basement roof settlement post-casting support system has shortcomings in terms of material utilization efficiency, construction cycle and pouring quality, and a more efficient, flexible and economical support solution is urgently needed to replace it. Summary of the invention

[0005] An embodiment of the present invention provides a method for supporting formwork for a settlement post-casting strip of a basement roof, which can reduce the use of scaffolding support structure materials in the existing settlement post-casting strip support system, avoid the problem of occupying a large amount of materials and increasing project costs, and at the same time, the support can be adjusted according to the stress distribution to effectively improve the casting quality.

[0006] A method for supporting a formwork of a post-casting strip of a basement roof settlement, comprising:

[0007] Construct a BIM model of the basement concrete structure;

[0008] The stress distribution at the post-casting zone is calculated by simulation;

[0009] According to the stress distribution position, the strength of the post-casting strip formwork, the support position of the post-casting strip formwork and the support load value are calculated;

[0010] Make the template according to the above parameters, and reserve the installation holes for the embedded parts at the template support position;

[0011] The formwork structure of the top plate is set, and after tying the steel mesh, the embedded parts are tied in the steel mesh. After the embedded parts are aligned with the installation holes, the detachable connectors are used to connect the embedded parts to seal the installation holes and then pour concrete;

[0012] After the strength of the top plates on both sides of the post-casting belt reaches the design requirements, retain the post-casting belt formwork and scaffolding support structure, and remove the detachable connectors, other formworks, and other scaffolding support structures;

[0013] Connect the detachable connectors with the embedded parts, wherein the detachable connectors are distributed on both sides of the post-casting strip, and the I-beam is installed by using the detachable connectors. The I-beam has a load applying structure at a position away from both ends, and the post-casting strip formwork is supported by the load applying structure, and the scaffolding support structure of the post-casting strip is removed;

[0014] After the settlement and deformation of the surrounding main structure have stabilized, the support load value of each post-casting strip formwork support position is adjusted through the load application structure according to the calculated support load value;

[0015] Carry out pouring of the post-casting strip.

[0016] Furthermore, the embedded part includes an embedded frame, a connecting rib is provided at the head end of the embedded frame, and a threaded sleeve is provided at the end of the embedded frame.

[0017] Furthermore, the detachable connecting piece includes a connecting frame, a threaded rod which can be threadedly connected to the threaded sleeve is provided at the head end of the connecting frame, and a pair of pulleys are provided at the end of the connecting frame, and a gap is provided between the pulleys for the I-beam to pass through.

[0018] Furthermore, the load application structure includes a base, a lifting rod is inserted at the head end of the base, the head end of the lifting rod is connected to a connecting plate, a lifting mechanism is provided inside the base, the lifting movable end of the lifting mechanism is fixedly connected to the lifting rod, and also includes a rotating handle, which passes through the base and is connected to the power input end of the lifting mechanism. Rotating the rotating handle can drive the lifting rod to perform lifting and lowering movements along the length direction of the base.

[0019] Furthermore, the lifting mechanism includes a mounting seat installed on the bottom wall inside the base, a reversing bevel gear group is provided inside the mounting seat, the power input end of the reversing bevel gear group is connected to the rotating handle, the power input end is connected to a screw, a guide rail connected to the mounting seat is provided on the outside of the screw, a slider is provided on the guide rail, the screw and the slider are threadedly connected, and rotating the rotating handle can drive the screw to rotate, drive the slider to move along the length direction of the guide rail, and the slider is fixedly connected to the lifting rod.

[0020] Furthermore, a controller is provided on the base, the controller has a display screen, a pressure sensor is provided on the connecting plate, and a signal output end of the pressure sensor is communicatively connected with a signal input end of the controller.

[0021] Further, the following steps are included:

[0022] The calculated support load value of the post-casting strip formwork is used to form a construction support load value set;

[0023] Allocate construction support load values ​​according to the construction area of ​​the construction personnel;

[0024] When construction workers adjust the support load value of the support position of the post-cast strip, the support load of the corresponding position of the post-cast strip template is adjusted by comparing the allocated construction support load value with the load value displayed on the display screen.

[0025] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0026] 1. The use of a new formwork structure can reduce the use of scaffolding support structures, improve the turnover rate of scaffolding support structures, and reduce project costs.

[0027] 2. The support process is simple, and different support load values ​​can be set according to the stress distribution at the post-casting zone to avoid leakage and cracking and improve the casting quality of the post-casting zone.

[0028] 3. The formwork structure used can be recycled and reused, which can reduce the cost of use.

[0029] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0030] The technical solution of the present invention is further described in detail below through the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a flow chart of a method for supporting a formwork of a post-casting strip of a basement roof settlement disclosed in an embodiment of the present invention;

[0033] Figure 2 This is a structural diagram of a support system for the post-cast zone of the existing basement roof settlement;

[0034] Figure 3 This is a structural diagram of another support system for the post-casting belt of the existing basement roof settlement;

[0035] Figure 4 A schematic diagram of the installation structure of the formwork structure in step S5 disclosed in an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the installation structure of the formwork structure in step S7 disclosed in an embodiment of the present invention;

[0037] Figure 6 for Figure 5 Schematic diagram of the installation structure of the formwork structure after the scaffolding support structure is removed;

[0038] Figure 7 It is a schematic diagram of the structure of the embedded parts and the detachable connecting parts disclosed in the embodiment of the present invention;

[0039] Figure 8 It is a structural schematic diagram of two states of the load application structure disclosed in an embodiment of the present invention;

[0040] Fig. 9 It is a schematic cross-sectional structural diagram of a load applying structure disclosed in an embodiment of the present invention;

[0041] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at A in the middle;

[0042] Fig.11 for Fig. 9 A schematic diagram of the enlarged structure at B in the middle;

[0043] Fig.12 A communication block diagram of the formwork structure disclosed in an embodiment of the present invention.

[0044] Reference numerals:

[0045] 1. Top plate; 2. Steel mesh; 3. Scaffolding support structure; 4. Formwork; 5. Formwork structure; 51. Embedded parts; 511. Connecting ribs; 512. Embedded frame; 513. Threaded sleeve; 52. Removable connector; 521. Connecting frame; 522. Threaded rod; 523. Pulley; 53. I-beam; 54. Load application structure; 541. Base; 542. Lifting rod; 543. Lifting mechanism; 543a. Mounting seat; 543b. Reversing bevel gear set; 543c. Guide rail; 543d. Screw rod; 543e. Slider; 544. Rotating handle; 545. Connecting plate; 546. Controller; 547. Display screen; 548. Pressure sensor. DETAILED DESCRIPTION

[0046] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0047] like Figure 2~3 As shown, Figure 2 A structural schematic diagram of a support system for the existing post-cast strip of the basement roof settlement is shown, which adopts a full-height scaffolding support structure 3. Since the construction of the post-cast strip of the basement roof 1 settlement needs to be carried out after the settlement and deformation of the main structure around the basement roof 1 have become stable, the use of the existing full-height scaffolding support structure 3 will lead to long-term occupancy, and the materials of the scaffolding support structure 3 will be idle due to the inability to turn over in time, which increases the cost burden of the project.

[0048] Figure 3 The schematic diagram of the structure of another supporting system of the existing basement roof settlement post-casting belt is shown. Figure 2 For the structure shown in , the formwork 4 at the settlement post-casting zone is supported independently. Although it can reduce the use of the scaffolding support structure 3 to a certain extent, the construction of the settlement post-casting zone of the basement roof 1 needs to be carried out after the settlement and deformation of the main structure around the basement roof 1 have stabilized. Therefore, the use of the independent scaffolding support structure 3 for the settlement post-casting zone will still lead to long-term occupancy, increasing the cost burden of the project.

[0049] Based on the above-mentioned problems of the existing basement roof 1 settlement post-casting strip support structure, the present invention proposes a basement roof settlement post-casting strip formwork support method, which can reduce the use of scaffolding support structure 3 materials in the existing settlement post-casting strip support system, avoid the problem of occupying a large amount of materials and increasing project costs, and at the same time, the support can be adjusted according to the stress distribution to effectively improve the casting quality.

[0050] like Figures 4 to 11 As shown, a formwork structure 5 is also proposed, which includes at least one pair of embedded parts 51 and at least one pair of detachable connecting parts 52, wherein the embedded parts 51 are connected to the detachable connecting parts 52 by thread, wherein the embedded parts 51 and the embedded parts 51 connecting parts are distributed on both sides of the post-casting strip ( Figures 1 to 6 In the area of ​​the steel mesh 2 where no concrete is poured), an I-beam 53 is installed between the two detachable connectors 52, and a load applying structure 54 is provided on the I-beam 53 at a position away from the two ends. The load applying structure 54 is used to apply a supporting load to the formwork 4 at the post-cast zone.

[0051] like Figures 4 to 7As shown, the embedded part 51 includes an embedded frame 512, a connecting rib 511 is provided at the head end of the embedded frame 512, a threaded sleeve 513 is provided at the end of the embedded frame 512, and the detachable connecting part 52 includes a connecting frame 521, a threaded rod 522 that can be threadedly connected to the threaded sleeve 513 is provided at the head end of the connecting frame 521, and a pair of pulleys 523 are provided at the end of the connecting frame 521, and a gap is provided between the pulleys 523 for the I-beam 53 to pass through.

[0052] like Figures 8 to 11 As shown, the load applying structure 54 includes a base 541, a lifting rod 542 is inserted at the head end of the base 541, the head end of the lifting rod 542 is connected to a connecting plate 545, a lifting mechanism 543 is provided inside the base 541, the lifting movable end of the lifting mechanism 543 is fixedly connected to the lifting rod 542, and also includes a rotating handle 544, which passes through the base 541 and is connected to the power input end of the lifting mechanism 543. Rotating the rotating handle 544 can drive the lifting rod 542 to perform lifting and lowering movements along the length direction of the base 541.

[0053] Among them, the lifting mechanism 543 includes a mounting seat 543a installed on the bottom wall inside the base 541, a reversing bevel gear set 543b is arranged inside the mounting seat 543a, the power input end of the reversing bevel gear set 543b is connected to the rotating handle 544, the power input end is connected to the screw rod 543d, a guide rail 543c connected to the mounting seat 543a is arranged outside the screw rod 543d, a slider 543e is arranged on the guide rail 543c, the screw rod 543d is threadedly connected to the slider 543e, rotating the rotating handle 544 can drive the screw rod 543d to rotate, drive the slider 543e to move along the length direction of the guide rail 543c, and the slider 543e is fixedly connected to the lifting rod 542.

[0054] like Figures 8 and 9 As shown in FIG. 12 , a controller 546 is also provided on the base 541 , and a display screen 547 is provided on the controller 546 . A pressure sensor 548 is provided on the connecting plate 545 , and a signal output end of the pressure sensor 548 is communicatively connected with a signal input end of the controller 546 .

[0055] According to the calculated support load value, the rotating handle 544 is rotated. The power input by the rotating handle 544 is reversed through the reversing bevel gear set 543b to drive the screw rod 543d to rotate. The direction of the rotating handle 544 is rotated, and the screw rod 543d drives the slider 543e to move along the length direction of the guide rail 543c. The slider 543e drives the lifting rod 542 to extend or retract from the base 541, and extrude the template 4 through the connecting plate 545 to apply a support load to the template 4. During the extrusion process, the pressure sensor 548 obtains the pressure signal, and the controller 546 converts the pressure signal into the applied support load value and displays it on the display screen 547. The construction personnel can adjust the rotation direction of the rotating handle 544 through the support load value on the display screen 547 to make it consistent with the calculated support load value, so as to avoid the problem of warping and leakage during the pouring process and improve the pouring quality.

[0056] It should be noted that, according to actual conditions, a scaffolding support structure can be set at the formwork of the post-settlement pouring zone to enhance the stability and supporting force of the formwork structure.

[0057] like Figures 1 to 12 As shown, a method for supporting a formwork of a post-casting strip of a basement roof after settlement comprises:

[0058] S1, construct the BIM model of the basement concrete structure.

[0059] S2, the stress distribution at the post-casting zone is calculated by simulation.

[0060] include:

[0061] Construct a simulation environment and import the BIM model of the above-mentioned basement concrete structure;

[0062] Enter the material parameters of concrete and steel bars;

[0063] Mesh the geometric model and generate finite element mesh;

[0064] Conduct stress analysis on the post-cast zone and the main structure around it, using the grid to capture stress changes in the structure;

[0065] Obtain stress distribution data of the post-cast zone and its surrounding main structure.

[0066] S3, according to the stress distribution position, the strength of the post-cast strip template 4 and the supporting position and supporting load value of the post-cast strip template 4 are calculated.

[0067] include:

[0068] Import the stress distribution data of the post-cast zone and its surrounding main structure for analysis:

[0069] Observe the stress distribution diagram and identify the high-stress and low-stress areas in the post-casting zone (high-stress areas usually require stronger support to prevent the formwork 4 from deformation or damage);

[0070] Analyze the direction of stress, determine in which directions the template 4 needs stronger support, and determine the support position;

[0071] According to the stress analysis results, the support load value required for each support position of the template 4 is calculated.

[0072] S4, manufacturing the template 4 according to the above parameters, and reserving installation holes for the embedded parts 51 at the supporting positions of the template 4.

[0073] The mounting hole is used to block the threaded sleeve 513 in the embedded part 51 to prevent concrete from entering and causing blockage of the threaded sleeve 513 .

[0074] S5, set the formwork structure 5 of the top plate 1, tie the steel mesh 2, tie the embedded parts 51 in the steel mesh 2, align the embedded parts 51 with the installation holes, use the detachable connecting parts 52 to connect with the embedded parts 51 to seal the installation holes, and then pour concrete.

[0075] S6, after the strength of the top plates 1 on both sides of the post-cast strip reaches the design requirements, retain the post-cast strip formwork 4 and the scaffolding support structure 3, and at the same time remove the detachable connector 52, the remaining formwork 4, and the remaining scaffolding support structure 3.

[0076] S7, connect the detachable connector 52 with the embedded part 51, wherein the detachable connector 52 is distributed on both sides of the post-cast strip, and the I-beam 53 is installed by using the detachable connector 52. The I-beam 53 has a load applying structure 54 at a position away from both ends, and the post-cast strip formwork 4 is supported by the load applying structure 54, and the scaffolding support structure 3 of the post-cast strip is removed.

[0077] S8, after the settlement and deformation of the surrounding main structure have become stable, the support load value of each post-casting strip formwork 4 support position is adjusted through the load applying structure 54 according to the calculated support load value.

[0078] The following steps are also included:

[0079] Using the calculated support load value of the post-casting strip formwork 4 to form a construction support load value set;

[0080] Allocate construction support load values ​​according to the construction area of ​​the construction personnel;

[0081] When the construction personnel adjust the support load value of the support position of the post-cast strip, the support load of the corresponding position of the post-cast strip template 4 is adjusted by comparing the allocated construction support load value with the load value displayed on the display screen 547.

[0082] S9, pouring the post-casting strip.

[0083] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of protection of the present disclosure. The attached method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0084] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0085] Those skilled in the art will also appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments herein can all be implemented as electronic hardware, computer software, or a combination thereof. In order to clearly illustrate the interchangeability between hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above around their functions. Whether such functions are implemented as hardware or software depends on specific applications and the design constraints imposed on the entire system. A skilled person can implement the described functions in an alternative manner for each specific application, but such implementation decisions should not be interpreted as departing from the scope of protection of the present disclosure.

[0086] The steps of the method or algorithm described in conjunction with the embodiments herein may be directly embodied as hardware, a software module executed by a processor, or a combination thereof. The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The ASIC may be located in a user terminal. Of course, the processor and the storage medium may also be present in a user terminal as discrete components.

[0087] For software implementation, the techniques described in this application can be implemented with modules (e.g., procedures, functions, etc.) that perform the functions described in this application. These software codes can be stored in a memory unit and executed by a processor. The memory unit can be implemented within the processor or outside the processor. In the latter case, it is coupled to the processor in a communication manner via various means, which are well known in the art.

[0088] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

Claims

1. A method for supporting the formwork of the post-casting strip of the basement roof settlement, characterized in that: include: Construct a BIM model of the basement concrete structure; The stress distribution at the post-casting zone is calculated by simulation; According to the stress distribution position, the strength of the template (4) at the post-casting strip, the support position of the template (4) at the post-casting strip, and the support load value are calculated; A template (4) is manufactured according to the above parameters, and a mounting hole for the embedded part (51) is reserved at a supporting position of the template (4); The formwork structure (5) of the top plate (1) is set, and after the steel mesh (2) is tied, the embedded part (51) is tied in the steel mesh (2), and after the embedded part (51) is aligned with the installation hole, a detachable connecting part (52) is used to connect the embedded part (51) to the installation hole, and then concrete is poured after the installation hole is sealed; After the strength of the top plates (1) on both sides of the post-cast strip reaches the design requirements, the formwork (4) and the scaffolding support structure (3) at the post-cast strip are retained, and the detachable connector (52), the remaining formwork (4), and the remaining scaffolding support structure (3) are removed at the same time; Connecting the detachable connecting parts (52) to the embedded parts (51), wherein the detachable connecting parts (52) are distributed on both sides of the post-cast strip, using the detachable connecting parts (52) to install the I-beam (53), a position away from both ends of the I-beam (53) is provided with a load applying structure (54), using the load applying structure (54) to support the formwork (4) at the post-cast strip, and removing the scaffolding support structure (3) of the post-cast strip; The load applying structure (54) comprises a base (541), a lifting rod (542) is inserted at the head end of the base (541), the head end of the lifting rod (542) is connected to a connecting plate (545), a lifting mechanism (543) is provided inside the base (541), a lifting movable end of the lifting mechanism (543) is fixedly connected to the lifting rod (542), and a rotating handle (544) is also included, which passes through the base (541) and is connected to the power input end of the lifting mechanism (543), and the rotating handle (544) can be rotated to drive the lifting rod (542) to perform lifting movement along the length direction of the base (541); The lifting mechanism (543) comprises a mounting seat (543a) mounted on the bottom wall inside the base (541); a reversing bevel gear set (543b) is provided inside the mounting seat (543a); a power input end of the reversing bevel gear set (543b) is connected to a rotating handle (544); a screw rod (543d) is connected to the power input end; a guide rail (543c) connected to the mounting seat (543a) is provided outside the screw rod (543d); a slider (543e) is provided on the guide rail (543c); the screw rod (543d) and the slider (543e) are threadedly connected; the rotating handle (544) can be turned to drive the screw rod (543d) to rotate, thereby driving the slider (543e) to move along the length direction of the guide rail; and the slider (543e) is fixedly connected to the lifting rod (542); A controller (546) is also provided on the base (541), and a display screen (547) is provided on the controller (546). A pressure sensor (548) is provided on the connecting plate (545), and a signal output end of the pressure sensor (548) is communicatively connected to a signal input end of the controller (546); After the settlement and deformation of the surrounding main structure have become stable, the support load value of the support position of the formwork (4) at each post-casting strip is adjusted through the load application structure (54) according to the calculated support load value; The steps include: Using the calculated support load value of the formwork (4) at the post-casting zone to form a construction support load value set; Allocate construction support load values ​​according to the construction area of ​​the construction personnel; When the construction personnel adjust the support load value of the support position of the post-cast strip, the support load of the corresponding position of the template (4) at the post-cast strip is adjusted by comparing the allocated construction support load value with the load value displayed on the display screen (547); Carry out pouring of the post-cast strip.

2. The method according to claim 1, characterized in that The embedded part (51) comprises an embedded frame (512), a connecting rib (511) is provided at the head end of the embedded frame (512), and a threaded sleeve (513) is provided at the tail end of the embedded frame (512).

3. The method according to claim 2, characterized in that The detachable connecting member (52) comprises a connecting frame (521), a threaded rod (522) threadably connected to a threaded sleeve (513) being provided at the head end of the connecting frame (521), and a pair of pulleys (523) being provided at the tail end of the connecting frame (521), with a gap between the pulleys (523) allowing the I-beam (53) to pass through.

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