Deep foundation pit unilateral formwork structure and construction technology

Abstract

The invention relates to the technical field of building construction, and discloses a deep foundation pit single-side formwork structure and a construction technology, and the deep foundation pit single-side formwork structure comprises a deep foundation pit body, a cement pouring slope poured on the deep foundation pit body, a formwork foundation poured on the outer surface of the deep foundation pit body, and a cement pouring formwork fixedly installed on the formwork foundation. And a plurality of positioning columns which are distributed at equal intervals are fixedly mounted on the outer surface of the cement pouring inclined plane. According to the deep foundation pit single-side formwork supporting structure and the construction technology, through the design of the bottom moving wheels, the position of the formwork supporting frame can be adjusted more flexibly in the installation process, the installation efficiency and convenience of the whole formwork supporting structure are improved, the first connecting steel frame and the second connecting steel frame in the formwork supporting assembly are connected through the connecting bolts and the limiting sleeves, assembling and disassembling are convenient, and the construction cost is reduced. And flexible adjustment can be achieved according to actual construction requirements, inclined rod connection is achieved through cooperation of a first connecting base, a second connecting base, a bolt rod, a first limiting groove and a second limiting groove in the connecting assembly, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a single-side formwork structure for a deep foundation pit and a construction process. Background Art

[0002] The height of modern buildings is constantly increasing, and the depth of their foundations is also increasing accordingly. During the excavation of deep foundation pits, the lateral soil pressure increases, and higher requirements are placed on the strength, stability and sealing of the formwork structure. When the traditional double-sided formwork method may not be implemented on one side due to site restrictions, a new single-sided formwork structure is generally used to ensure construction safety and quality.

[0003] In some areas with complex geological conditions, such as soft soil strata, high water level strata, etc., the formwork structure during deep foundation pit construction needs to consider multiple factors such as waterproofing and collapse prevention. The single-sided formwork structure needs to be able to effectively resist lateral forces under these special geological conditions, prevent groundwater leakage and other problems, and reduce safety hazards during construction, avoid collision risks during formwork installation and removal, and provide more convenient installation and removal methods, reduce mutual interference between construction processes, and better adapt to the compact construction schedule of modern construction projects.

[0004] As a prior art, the Chinese invention patent application with publication number CN115522567A specifically discloses a single-sided formwork device and a formwork method for a wall. The single-sided formwork device and the formwork method for a wall arrange steel trusses at regular intervals and weld them to the vertical steel bars on both sides of the outer wall of the underground structure. The overall stability of the trusses can be used to better tie the vertical steel bars of the wall, thereby increasing the strength and rigidity of the wall and improving the overall stability of the wall. In addition, the built-in steel trusses of the single-sided formwork and the outer wall casting steel formwork are connected by bolts, making the on-site formwork erection simple and convenient, optimizing and improving the formwork. The construction process of plate arrangement reduces the construction period, reduces the construction cost, and has obvious economic benefits. However, during the use process, although it can enhance the rigidity and strength of the overall wall, it is not convenient to improve the horizontal and vertical deformation resistance during the formwork process, which can easily lead to leakage during the concrete pouring process, resulting in poor concrete pouring quality, and it is not convenient to adjust the position of the formwork frame during the installation process, which can easily lead to poor efficiency and convenience of the overall formwork structure installation, resulting in poor applicability of the overall single-sided formwork structure, which is not convenient for promotion and use. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a single-sided formwork structure and construction process for a deep foundation pit, which can effectively solve the problems in the prior art that it is not convenient to improve the deformation resistance in the horizontal and vertical directions, which easily leads to leakage of concrete during the concrete pouring process during the construction process, resulting in poor quality of concrete pouring, and it is not convenient to adjust the position of the formwork frame during the installation process, which easily leads to poor efficiency and convenience in the installation of the overall formwork structure, thereby resulting in poor practicality of the overall single-sided formwork structure and inconvenience for promotion and use.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A single-sided formwork structure for a deep foundation pit, comprising a deep foundation pit body, a cement pouring slope cast on the deep foundation pit body, and a formwork foundation cast on the outer surface of the deep foundation pit body, a cement pouring formwork frame fixedly installed on the formwork foundation, a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, a formwork frame with an L-shaped cross-section arranged on the deep foundation pit body, angle steel fixedly installed at the right angle of the formwork frame, an inclined rod fixedly installed on the side of the formwork frame away from the deep foundation pit body, and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope ... and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, and a plurality of equidistantly distributed positioning columns fixedly installed on the outer surface of the cement pouring slope, and a plurality of equidist A second reinforcing rod and a fixing steel with an "X"-shaped cross-section are fixedly installed between the formwork, the other end of the formwork frame away from the cement casting formwork is threadedly connected to a limiting assembly, the other end of the formwork frame away from the deep foundation pit body is fixedly installed with a reinforcing assembly, the other end of the formwork frame close to the cement casting formwork is provided with a formwork assembly, a connecting assembly is fixedly installed on the outer surface of the oblique rod, connecting rods connecting multiple oblique rods are provided between the connecting assemblies, and a positioning assembly is fixedly installed on one end of the formwork frame close to the cement casting formwork.

[0008] Preferably, the formwork frame is fixedly mounted with a movable wheel on one side close to the deep foundation pit body, the limiting assembly includes a threaded column, a connecting sleeve is fixedly mounted on the other end of the threaded column away from the deep foundation pit body, and a rotating rod with a "cross" shaped cross-section is fixedly mounted on the other end of the connecting sleeve away from the threaded column.

[0009] Through the above technical scheme, the overall formwork frame and the upper components can be moved through the design of the moving wheels, and the moving wheels can be used to move the formwork frame to a predetermined position on the temporary track or flat ground at the construction site, which can effectively reduce the labor intensity of manual handling and improve construction efficiency. The position of the formwork frame can be adjusted more flexibly during the installation process. At the same time, when the position adjustment is completed, the user can drive the threaded column to rotate through the turning rod, which can facilitate the role of limiting and realize the fixation of the overall formwork frame.

[0010] Preferably, a bottom sleeve is fixedly installed on the other end of the threaded column away from the rotating rod, and a limit plate is fixedly installed on the other end of the bottom sleeve away from the rotating rod, and the other side of the limit plate away from the threaded column contacts one side of the deep foundation pit body.

[0011] Through the above technical scheme, when fixed, the limit plate can be made to be in close contact with one side of the deep foundation pit body, and then the other end of the threaded column is threadedly connected to the formwork frame, and then the connecting sleeve is driven to rotate by rotating the rotating rod, thereby rotating the threaded column to achieve the limit adjustment of the formwork frame. The limit plate is in contact with the deep foundation pit body, which can effectively prevent the formwork frame from moving toward the deep foundation pit body, thereby ensuring the stability of the formwork structure, thereby ensuring the accuracy and safety of single-sided formwork of the deep foundation pit.

[0012] Preferably, the reinforcement assembly includes a screw, the outer surface of the screw is threadedly connected to a positioning seat in contact with the formwork frame, the other end of the positioning seat away from the formwork frame is fixedly installed with a first reinforcement column, the screw and the positioning seat are provided in the same number, and a second reinforcement column is fixedly installed on the outer surface of another positioning seat, and the first reinforcement column and the second reinforcement column are in contact with each other.

[0013] Through the above technical scheme, the reinforcement component can be easily installed on the formwork frame by using the cooperation of screws and positioning seats. The first reinforcement column and the second reinforcement column are in contact with each other, which can effectively enhance the structural strength of the formwork frame, improve the stability of the entire formwork structure when it is subjected to external forces such as concrete pouring pressure, prevent deformation of the formwork frame, and ensure the construction quality of single-sided formwork for deep foundation pits.

[0014] Preferably, the formwork assembly includes a first connecting steel frame, a second connecting steel frame is arranged on the outer surface of the first connecting steel frame, a connecting bolt is threadedly connected to the outer surface of the first connecting steel frame and extends to the interior of the second connecting steel frame, the other end of the connecting bolt away from the second connecting steel frame is threadedly connected to a limiting sleeve, and a bonding plate is arranged on the outer surface of the second connecting steel frame, and the bonding plate is bonded to the outer surface of the cement casting formwork.

[0015] Through the above technical scheme, when in use, the first connecting steel frame is first installed on one end of the formwork frame close to the cement casting formwork, and then the second connecting steel frame is placed on the outer surface of the first connecting steel frame, and the first connecting steel frame and the second connecting steel frame are connected by a connecting bolt, and the connecting bolt passes through the first connecting steel frame and extends to the inside of the second connecting steel frame, and a limit sleeve is threadedly connected to the other end of the connecting bolt, and finally the bonding plate is installed on the outer surface of the second connecting steel frame to make it fit with the outer surface of the cement casting formwork, and the first connecting steel frame and the second connecting steel frame are connected by the connecting bolt and the limit sleeve, which is convenient for assembly and disassembly, and the connection is firm, and the structure of the formwork assembly can be flexibly adjusted according to actual construction needs, and the bonding plate fits with the outer surface of the cement casting formwork, which can ensure the sealing and stability of the formwork, prevent leakage during concrete pouring, and ensure the quality of deep foundation pit concrete pouring.

[0016] Preferably, the first connecting steel frames and the second connecting steel frames are both provided in equal numbers, the first connecting steel frames are distributed in a transverse manner, and the second connecting steel frames are distributed in a vertical manner.

[0017] Through the above technical scheme, the first connecting steel frame is distributed horizontally and the second connecting steel frame is distributed vertically and the number is the same, so that the formwork assembly has sufficient support structure in the horizontal and vertical directions. The first horizontal connecting steel frame can effectively share the lateral pressure generated during cement pouring in the horizontal direction to prevent the formwork structure from deforming in the horizontal direction, and the second vertical connecting steel frame provides a stable supporting force in the vertical direction to ensure the stability of the entire formwork structure when bearing vertical loads such as concrete weight. The criss-cross distribution method greatly enhances the overall strength and stability of the formwork assembly, improves the support effect of the cement pouring formwork, ensures that the single-sided formwork of the deep foundation pit is firm and reliable during the concrete pouring process, and effectively avoids problems such as template deformation and displacement due to uneven force.

[0018] Preferably, the connecting assembly includes a first connecting seat and a second connecting seat, the outer surface of the first connecting seat is provided with a threaded hole and a first limiting groove, the outer surface of the second connecting seat is provided with a second limiting groove of the same size as the first limiting groove, and the outer surface of the second connecting seat is threadedly connected with a bolt rod extending into the interior of the threaded hole.

[0019] Through the above technical scheme, the first connecting seat is installed at one end of the inclined rod, and the second connecting seat is installed at the end of the other inclined rod to be connected, so that the first limiting groove and the second limiting groove are aligned, and then the bolt rod is passed through the second limiting groove and screwed into the threaded hole. At the same time, the connecting rod is placed in the first limiting groove and the second limiting groove, and the bolt rod is tightened. The connection and fixation between multiple formwork frames can be achieved. The design of the first limiting groove and the second limiting groove can ensure the accuracy and stability of the first connecting seat and the second connecting seat during connection, and prevent misalignment during the connection process. Multiple formwork frames can be connected only through a single connecting rod, thereby improving the practicality and diversity of the overall formwork frame.

[0020] Preferably, the positioning assembly comprises positioning steel, a fixing sleeve is fixedly installed on the outer surface of the positioning steel, a positioning groove is formed on the inner surface of the fixing sleeve, the positioning groove is matched with the positioning column and the two are installed by plug-in connection.

[0021] Through the above technical scheme, the positioning steel is pre-fixed and connected with the fixing sleeve, and then the fixing sleeve is installed at one end of the formwork frame close to the cement casting formwork, so that the positioning groove is aligned with the positioning column on the outer surface of the cement casting slope, and the formwork frame is moved in the direction close to the deep foundation pit body, so that the positioning column is inserted into the positioning groove, and the positioning of the formwork frame is completed. The positioning groove is adapted to the positioning column and is installed in a plug-in manner, which can accurately and quickly position the formwork frame and ensure the position accuracy of the formwork frame during the installation process. This helps to improve the installation efficiency and accuracy of the entire single-sided formwork structure, so that the subsequent formwork construction can proceed smoothly and ensure the dimensional accuracy of the deep foundation pit concrete pouring.

[0022] Preferably, a first reinforcing rod is welded to the other end of the formwork frame away from the deep foundation pit body, and the other end of the first reinforcing rod away from the formwork frame is fixedly mounted to the diagonal rod.

[0023] Through the above technical solution, a first reinforcing rod is welded to the other end of the formwork frame away from the deep foundation pit body, the other end of the first reinforcing rod is fixedly installed to the diagonal rod, and the formwork frame and the diagonal rod are connected by the first reinforcing rod to form a more stable triangular structure. The triangular structure has good stability, can enhance the connection strength between the formwork frame and the diagonal rod, improve the deformation resistance of the entire formwork structure, effectively resist the lateral force generated during concrete pouring, and ensure the stability of the single-sided formwork structure of the deep foundation pit during construction.

[0024] The present invention also provides a single-side formwork structure for a deep foundation pit and a construction process, comprising the following steps:

[0025] S1: Weld a first reinforcing rod at the other end of the formwork frame away from the deep foundation pit body, and fix the other end of the first reinforcing rod to the diagonal rod;

[0026] S2: Install the reinforcement assembly, pass the screws through the formwork frame, install the positioning seats on the screws in sequence to make them in close contact with the formwork frame, install the first reinforcement column on one of the positioning seats, install the second reinforcement column on the other positioning seat, make the first reinforcement column and the second reinforcement column contact, and then tighten the nuts on the screws;

[0027] S3: Install the formwork assembly, first install the first connecting steel frame on one end of the formwork frame close to the cement casting formwork, then place the second connecting steel frame on the outer surface of the first connecting steel frame, connect the first connecting steel frame and the second connecting steel frame through a connecting bolt, thread the other end of the connecting bolt with a limiting sleeve, and finally install the bonding plate on the outer surface of the second connecting steel frame to make it fit with the outer surface of the cement casting formwork;

[0028] S4: Move the formwork frame and the parts assembly above it, use the moving wheels on the formwork frame to move the formwork frame on the temporary track or flat ground of the construction site, then pre-fix and connect the positioning steel with the fixing sleeve, install the fixing sleeve on the end of the formwork frame close to the cement casting formwork, align the positioning groove on the inner surface of the fixing sleeve with the positioning column on the outer surface of the cement casting slope, and then move the formwork frame in the direction close to the deep foundation pit body, so that the positioning column is inserted into the positioning groove, and the overall formwork frame is pre-positioned;

[0029] S5: After positioning, one end of the threaded column of the limiting assembly is fixedly connected to the limiting plate through the bottom sleeve, and the end with the bottom sleeve and the limiting plate is placed close to the deep foundation pit body, so that the limiting plate is in close contact with one side of the deep foundation pit body, and then the other end of the threaded column is threadedly connected to the formwork frame, and the connecting sleeve is driven to rotate by rotating the rotating rod to rotate the threaded column to achieve the limitation of the formwork frame. When the construction is completed, the threaded column can be rotated to release the positioning;

[0030] S6: After a single formwork frame is assembled and fixed, the first connecting seat can be installed at one end of the inclined rod, and the second connecting seat can be installed at the end of another inclined rod to be connected, so that the first limiting groove and the second limiting groove are aligned, and the bolt rod is passed through the second limiting groove and then screwed into the threaded hole, and the connecting rod is placed in the first limiting groove and the second limiting groove, and then the bolt rod is tightened to connect multiple formwork frames;

[0031] S7: After completing the above steps, the single-sided formwork structure of the deep foundation pit is completed, and the concrete can be mixed, and then poured into the formwork foundation and cement pouring formwork for subsequent pouring or other construction operations.

[0032] Compared with the prior art, the deep foundation pit single-side formwork structure and construction scheme provided by the present invention have the following beneficial effects:

[0033] 1. The single-sided formwork structure and construction scheme of the deep foundation pit can more flexibly adjust the position of the formwork frame during the installation process through the design of the bottom moving wheel, thereby improving the efficiency and convenience of the installation of the entire formwork structure. In addition, the first connecting steel frame and the second connecting steel frame in the formwork assembly are connected by connecting bolts and limiting sleeves, which is convenient for assembly and disassembly. The structure can be flexibly adjusted according to actual construction needs. The oblique rod connection is realized by the cooperation of the first connecting seat, the second connecting seat, the bolt rod, the first limiting groove and the second limiting groove in the connecting assembly, which is simple to operate and improves the construction efficiency.

[0034] 2. The single-sided formwork structure and construction plan of the deep foundation pit, through the limit assembly and the deep foundation pit body through the limit plate, the rotating rod drives the threaded column to rotate to achieve the limit of the formwork frame to prevent it from moving toward the deep foundation pit body. The positioning groove and the positioning column in the positioning assembly are plugged and installed, which can accurately and quickly position the formwork frame, ensure the installation position accuracy, help the subsequent formwork construction to proceed smoothly, avoid quality problems caused by the displacement of the formwork frame, and ensure the dimensional accuracy and structural firmness of the deep foundation pit concrete pouring;

[0035] 3. The single-sided formwork structure and construction plan of the deep foundation pit, the bonding plate in the formwork assembly is bonded to the outer surface of the cement casting formwork frame to prevent leakage during concrete pouring, ensure the quality of concrete pouring, and make the integrity of the deep foundation pit structure better. In addition, the first connecting steel frame is distributed horizontally and the second connecting steel frame is distributed vertically. The criss-cross design makes the formwork assembly have sufficient support structure in the horizontal and vertical directions, share the horizontal side pressure and bear the vertical load, avoid the deformation and displacement of the template due to uneven force, and ensure that the single-sided formwork of the deep foundation pit is firm and reliable during the concrete pouring process;

[0036] 4. The single-sided formwork structure and construction plan of the deep foundation pit, the connecting assembly can connect multiple formwork frames through a single connecting rod, the first limit groove and the second limit groove ensure the accuracy and stability of the connection of multiple formwork frames, and can also adjust the connection of multiple formwork frames according to actual construction conditions, thereby improving the diversity of the overall single formwork structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a first-view stereoscopic structural schematic diagram of the single-side formwork structure of a deep foundation pit in the present invention;

[0038] Figure 2 A second perspective three-dimensional structure diagram of the single-side formwork structure of the deep foundation pit in the present invention Figure 2 ;

[0039] Figure 3 This is a schematic diagram of the split structure of the formwork assembly of the present invention from a first viewing angle;

[0040] Figure 4 A schematic diagram of the split structure of the formwork assembly of the present invention from a second viewing angle;

[0041] Figure 5 A schematic diagram of the split structure of the formwork assembly of the present invention from a third viewing angle;

[0042] Figure 6 This is a schematic diagram of the split structure of the connection assembly of the present invention;

[0043] Figure 7 This is a schematic diagram of the split structure of the positioning component of the present invention;

[0044] Figure 8This is a schematic diagram of the three-dimensional structure of the reinforcement assembly of the present invention;

[0045] Fig. 9 It is a schematic diagram of the three-dimensional structure of the limiting component of the present invention;

[0046] Fig.10 It is a schematic diagram of the process structure of the present invention.

[0047] Among them: 1. deep foundation pit; 2. cement pouring slope; 3. mold foundation; 4. cement pouring mold frame; 5. positioning column; 6. formwork frame; 7. angle steel; 8. first reinforcement rod; 9. moving wheel; 10. inclined rod; 11. second reinforcement rod; 12. limit assembly; 1201. threaded column; 1202. connecting sleeve; 1203. rotating rod; 1204. bottom sleeve; 1205. limit plate; 13. reinforcement assembly; 1301. screw; 1302. positioning seat; 1303. first reinforcement column; 1304. second reinforcement column; 14. Formwork assembly; 1401. First connecting steel frame; 1402. Second connecting steel frame; 1404. Connecting bolt; 1405. Limiting sleeve; 1406. Bonding plate; 15. Connecting assembly; 1501. First connecting seat; 1502. Threaded hole; 1503. First limiting groove; 1504. Second connecting seat; 1505. Second limiting groove; 1506. Bolt rod; 16. Connecting rod; 17. Positioning assembly; 1701. Positioning steel; 1702. Fixing sleeve; 1703. Positioning groove; 18. Fixing steel. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Embodiment 1:

[0050] like Figure 1-2As shown, the single-sided formwork structure of the deep foundation pit given in this example comprises a deep foundation pit body 1, a cement pouring slope 2 poured on the deep foundation pit body 1, and a formwork foundation 3 poured on the outer surface of the deep foundation pit body 1, a cement pouring formwork frame 4 fixedly installed on the formwork foundation 3, a plurality of equidistantly distributed positioning columns 5 fixedly installed on the outer surface of the cement pouring slope 2, a formwork frame 6 with an L-shaped cross-section arranged on the deep foundation pit body 1, an angle steel 7 fixedly installed at the right angle of the formwork frame 6, an inclined rod 10 fixedly installed on the side of the formwork frame 6 away from the deep foundation pit body 1, and a fixed steel bar 10 is installed between the two formwork frames 6. A second reinforcing rod 11 and a fixing steel 18 with an "X"-shaped cross-section are installed. The other end of the formwork frame 6 away from the cement casting formwork 4 is threadedly connected to the limiting component 12. The other end of the formwork frame 6 away from the deep foundation pit body 1 is fixedly installed with a reinforcing component 13. The other end of the formwork frame 6 close to the cement casting formwork 4 is provided with a formwork component 14. A connecting component 15 is fixedly installed on the outer surface of the diagonal rod 10. Connecting rods 16 connecting multiple diagonal rods 10 are provided between the connecting components 15. A positioning component 17 is fixedly installed on one end of the formwork frame 6 close to the cement casting formwork 4.

[0051] See also Fig. 9 In this example, a moving wheel 9 is fixedly installed on the side of the formwork frame 6 close to the deep foundation pit body 1, and the limiting component 12 includes a threaded column 1201, and a connecting sleeve 1202 is fixedly installed on the other end of the threaded column 1201 away from the deep foundation pit body 1, and a rotating rod 1203 with a "cross" structure in cross section is fixedly installed on the other end of the connecting sleeve 1202 away from the threaded column 1201. In this way, through the design of the moving wheel 9, the entire formwork frame 6 and the upper component can be moved, and the moving wheel 9 can be used to move the formwork frame 6 to a predetermined position on a temporary track or a flat ground at the construction site, which can effectively reduce the labor intensity of manual handling and improve construction efficiency. In addition, the position of the formwork frame 6 can be more flexibly adjusted during the installation process. At the same time, when the position adjustment is completed, the user can drive the threaded column 1201 to rotate through the rotating rod 1203, which can facilitate the role of limiting and realize the fixation of the entire formwork frame 6.

[0052] Furthermore, in this example, a bottom sleeve 1204 is fixedly installed at the other end of the threaded column 1201 away from the rotating rod 1203, and a limit plate 1205 is fixedly installed at the other end of the bottom sleeve 1204 away from the rotating rod 1203, and the other side of the limit plate 1205 away from the threaded column 1201 contacts one side of the deep foundation pit body 1. In this way, when fixed, the limit plate 1205 can be closely contacted with one side of the deep foundation pit body 1, and then the other end of the threaded column 1201 is threadedly connected to the formwork frame 6, and then the connecting sleeve 1202 is rotated by rotating the rotating rod 1203, and then the threaded column 1201 is rotated to achieve the limit adjustment of the formwork frame 6, and the limit plate 1205 contacts the deep foundation pit body 1, which can effectively prevent the formwork frame 6 from moving toward the deep foundation pit body 1, ensure the stability of the formwork structure, and thus ensure the accuracy and safety of the single-sided formwork of the deep foundation pit.

[0053] Embodiment 2:

[0054] As an improvement to the previous embodiment, Figure 8 As shown, in this example, the reinforcement component 13 includes a screw 1301, the outer surface of the screw 1301 is threadedly connected with a positioning seat 1302 in contact with the formwork frame 6, the other end of the positioning seat 1302 away from the formwork frame 6 is fixedly installed with a first reinforcement column 1303, the screw 1301 and the positioning seat 1302 are provided with the same number, and the outer surface of the other positioning seat 1302 is fixedly installed with a second reinforcement column 1304, and the first reinforcement column 1303 and the second reinforcement column 1304 are in contact. In this way, by using the cooperation of the screw 1301 and the positioning seat 1302, the reinforcement component 13 can be easily installed on the formwork frame 6, the first reinforcement column 1303 and the second reinforcement column 1304 are in contact with each other, which can effectively enhance the structural strength of the formwork frame 6, improve the stability of the entire formwork structure when it is subjected to external forces such as concrete pouring pressure, prevent the formwork frame 6 from deformation, and ensure the quality of single-side formwork construction of deep foundation pits.

[0055] Combination Figures 3 to 5As shown, in this example, the formwork assembly 14 includes a first connecting steel frame 1401, and a second connecting steel frame 1402 is arranged on the outer surface of the first connecting steel frame 1401. The outer surface of the first connecting steel frame 1401 is threadedly connected with a connecting bolt 1404 extending into the interior of the second connecting steel frame 1402, and the other end of the connecting bolt 1404 away from the second connecting steel frame 1402 is threadedly connected to a limiting sleeve 1405, and the outer surface of the second connecting steel frame 1402 is provided with a bonding plate 1406, and the bonding plate 1406 is connected to the outer surface of the cement casting formwork 4. In this way, when in use, the first connecting steel frame 1401 is first installed on one end of the supporting formwork frame 6 close to the cement casting formwork 4, and then the second connecting steel frame 1402 is placed on the outer surface of the first connecting steel frame 1401, and the first connecting steel frame 1401 and the second connecting steel frame 1402 are connected by the connecting bolt 1404, and the connecting bolt 1404 passes through the first connecting steel frame 1401 and extends to the inside of the second connecting steel frame 1402, and the other end of the connecting bolt 1404 is threadedly connected to the limiting sleeve 1405, and finally the bonding plate 1406 is installed The outer surface of the second connecting steel frame 1402 is fitted with the outer surface of the cement casting formwork 4, and the first connecting steel frame 1401 and the second connecting steel frame 1402 are connected by connecting bolts 1404 and limiting sleeves 1405, which are convenient for assembly and disassembly, and the connection is firm. The structure of the formwork assembly 14 can be flexibly adjusted according to actual construction needs, and the bonding plate 1406 is fitted with the outer surface of the cement casting formwork 4, which can ensure the sealing and stability of the formwork, prevent leakage during concrete pouring, and ensure the quality of deep foundation pit concrete pouring.

[0056] Furthermore, in this example, the first connecting steel frame 1401 and the second connecting steel frame 1402 are provided in the same number, and the multiple first connecting steel frames 1401 are distributed horizontally, and the multiple second connecting steel frames 1402 are distributed vertically. With such a configuration, the first connecting steel frames 1401 are distributed horizontally, and the second connecting steel frames 1402 are distributed vertically and in the same number, so that the formwork assembly 14 has sufficient support structure in the horizontal and vertical directions. The horizontal first connecting steel frame 1401 can effectively share the lateral pressure generated during cement pouring in the horizontal direction to prevent the formwork structure from deforming in the horizontal direction, and the vertical second connecting steel frame 1402 provides a stable support force in the vertical direction to ensure the stability of the entire formwork structure when bearing vertical loads such as the weight of concrete. The criss-cross distribution method greatly enhances the overall strength and stability of the formwork assembly 14, improves the support effect on the cement pouring formwork frame 4, ensures that the single-sided formwork of the deep foundation pit is firm and reliable during the concrete pouring process, and effectively avoids problems such as template deformation and displacement due to uneven force.

[0057] Embodiment three:

[0058] As an improvement to the first embodiment, Figure 6As shown, in this example, the connecting assembly 15 includes a first connecting seat 1501 and a second connecting seat 1504. The outer surface of the first connecting seat 1501 is provided with a threaded hole 1502 and a first limiting groove 1503. The outer surface of the second connecting seat 1504 is provided with a second limiting groove 1505 of the same size as the first limiting groove 1503. The outer surface of the second connecting seat 1504 is threadedly connected with a bolt rod 1506 extending into the threaded hole 1502. In this way, the first connecting seat 1501 is installed at one end of the inclined rod 10, and the second connecting seat 1504 is installed at the end of the other inclined rod 10 to be connected, so that the first limiting groove 1503 and the second limiting groove 1505 are connected. The limiting groove 1505 is aligned, and then the bolt rod 1506 is passed through the second limiting groove 1505 and screwed into the threaded hole 1502. At the same time, the connecting rod 16 is placed in the first limiting groove 1503 and the second limiting groove 1505, and the bolt rod 1506 is tightened. This can achieve the connection and fixation between multiple formwork frames 6. The design of the first limiting groove 1503 and the second limiting groove 1505 can ensure the accuracy and stability of the first connecting seat 1501 and the second connecting seat 1504 during connection, and prevent misalignment during the connection process. Multiple formwork frames 6 can be connected only through a single connecting rod 16, thereby improving the practicality and diversity of the overall formwork frame 6.

[0059] Further integration Figure 7 As shown, the positioning assembly 17 in this example includes a positioning steel 1701, a fixing sleeve 1702 is fixedly installed on the outer surface of the positioning steel 1701, and a positioning groove 1703 is opened on the inner surface of the fixing sleeve 1702. The positioning groove 1703 is adapted to the positioning column 5 and the two are plug-in installed. In this way, the positioning steel 1701 is pre-fixed and connected with the fixing sleeve 1702, and then the fixing sleeve 1702 is installed on the end of the formwork frame 6 close to the cement casting formwork 4, so that the positioning groove 1703 is aligned with the positioning column 5 on the outer surface of the cement casting slope 2, and the formwork frame 6 is moved in the direction close to the deep foundation pit body 1, so that the positioning column 5 is inserted into the positioning groove 1703, and the positioning of the formwork frame 6 is completed. The positioning groove 1703 is adapted to the positioning column 5 and is installed in a plug-in manner, which can accurately and quickly position the formwork frame 6 and ensure the position accuracy of the formwork frame 6 during the installation process. This helps to improve the installation efficiency and accuracy of the entire single-sided formwork structure, so that the subsequent formwork construction can proceed smoothly and ensure the dimensional accuracy of the deep foundation pit concrete pouring.

[0060] Combination Figure 1 and Figure 2As shown, in this example, the other end of the formwork frame 6 away from the deep foundation pit body 1 is welded with a first reinforcing rod 8, and the other end of the first reinforcing rod 8 away from the formwork frame 6 is fixedly installed with the diagonal rod 10. In this way, the first reinforcing rod 8 is welded to the other end of the formwork frame 6 away from the deep foundation pit body 1, and the other end of the first reinforcing rod 8 is fixedly installed with the diagonal rod 10, and the formwork frame 6 and the diagonal rod 10 are connected by the first reinforcing rod 8 to form a more stable triangular structure. The triangular structure has good stability, can enhance the connection strength between the formwork frame 6 and the diagonal rod 10, improve the deformation resistance of the entire formwork structure, effectively resist the lateral force generated during the concrete pouring process, and ensure the stability of the single-sided formwork structure of the deep foundation pit during the construction process.

[0061] like Fig.10 As shown, for the deep foundation pit single-sided formwork structure given in the above example, this example further gives a specific construction process, combined with Figures 1 to 9 As shown, the construction process includes the following steps:

[0062] S1: Weld a first reinforcing rod 8 to the other end of the formwork frame 6 away from the deep foundation pit body 1 , and fix the other end of the first reinforcing rod 8 to the diagonal rod 10 .

[0063] S2: Install the reinforcement component 13, pass the screw 1301 through the formwork frame 6, install the positioning seats 1302 on the screw 1301 in sequence to make it in close contact with the formwork frame 6, install the first reinforcement column 1303 on one of the positioning seats 1302, and install the second reinforcement column 1304 on the other positioning seat 1302, so that the first reinforcement column 1303 and the second reinforcement column 1304 are in contact, and then tighten the nut on the screw 1301.

[0064] S3: Install the formwork assembly 14, first install the first connecting steel frame 1401 on one end of the formwork frame 6 close to the cement casting formwork 4, then place the second connecting steel frame 1402 on the outer surface of the first connecting steel frame 1401, connect the first connecting steel frame 1401 and the second connecting steel frame 1402 through the connecting bolt 1404, thread the limit sleeve 1405 at the other end of the connecting bolt 1404, and finally install the bonding plate 1406 on the outer surface of the second connecting steel frame 1402 to make it fit with the outer surface of the cement casting formwork 4.

[0065] S4: Move the formwork frame 6 and the parts assembly above it, use the moving wheels 9 on the formwork frame 6 to move the formwork frame 6 on the temporary track or flat ground at the construction site, then pre-fix the positioning steel 1701 and the fixing sleeve 1702, install the fixing sleeve 1702 on the end of the formwork frame 6 close to the cement casting formwork 4, make the positioning groove 1703 on the inner surface of the fixing sleeve 1702 align with the positioning column 5 on the outer surface of the cement casting slope 2, and then move the formwork frame 6 in the direction close to the deep foundation pit body 1, so that the positioning column 5 is inserted into the positioning groove 1703, so as to realize the pre-positioning of the entire formwork frame 6.

[0066] S5: After positioning, one end of the threaded column 1201 of the limiting assembly 12 is fixedly connected to the limiting plate 1205 through the bottom sleeve 1204, and one end with the bottom sleeve 1204 and the limiting plate 1205 is placed close to the deep foundation pit body 1, so that the limiting plate 1205 is in close contact with one side of the deep foundation pit body 1, and then the other end of the threaded column 1201 is threadedly connected to the formwork frame 6, and the connecting sleeve 1202 is driven to rotate by rotating the rotating rod 1203 to rotate the threaded column 1201 to achieve the limitation of the formwork frame 6. When the construction is completed, the threaded column 1201 can be rotated to release the positioning.

[0067] S6: When a single formwork frame 6 is assembled and fixed, the first connecting seat 1501 can be installed on one end of the inclined rod 10, and the second connecting seat 1504 can be installed on the end of the other inclined rod 10 to be connected, so that the first limiting groove 1503 and the second limiting groove 1505 are aligned, and the bolt rod 1506 is passed through the second limiting groove 1505 and then screwed into the threaded hole 1502. At the same time, the connecting rod 16 is placed in the first limiting groove 1503 and the second limiting groove 1505, and then the bolt rod 1506 is tightened to connect multiple formwork frames 6.

[0068] S7: After completing the above steps, the single-sided formwork structure of the deep foundation pit is completed, and the concrete can be mixed, and then poured into the formwork foundation 3 and the cement pouring formwork 4 for subsequent pouring or other construction operations.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-sided formwork structure for a deep foundation pit, comprising a deep foundation pit body (1), a cement pouring slope (2) poured on the deep foundation pit body (1), and a formwork foundation (3) poured on the outer surface of the deep foundation pit body (1), characterized in that: A cement casting formwork (4) is fixedly installed on the mold foundation (3); a plurality of equidistantly distributed positioning columns (5) are fixedly installed on the outer surface of the cement casting inclined surface (2); a formwork frame (6) having an L-shaped cross section is arranged on the deep foundation pit body (1); an angle steel (7) is fixedly installed at a right angle of the formwork frame (6); a diagonal rod (10) is fixedly installed on a side of the formwork frame (6) away from the deep foundation pit body (1); a second reinforcing rod (11) having an X-shaped cross section and a fixing steel (18) are fixedly installed between the two formwork frames (6); the formwork frame (6) ) is threadedly connected to a limiting component (12) at the other end away from the cement casting formwork (4); a reinforcing component (13) is fixedly installed on the other end of the formwork frame (6) away from the deep foundation pit body (1); a formwork component (14) is arranged at the other end of the formwork frame (6) close to the cement casting formwork (4); a connecting component (15) is fixedly installed on the outer surface of the inclined rod (10); connecting rods (16) connecting a plurality of the inclined rods (10) are arranged between the connecting components (15); and a positioning component (17) is fixedly installed on one end of the formwork frame (6) close to the cement casting formwork (4).

2. A single-side formwork structure for a deep foundation pit according to claim 1, characterized in that: The formwork frame (6) is fixedly mounted with a moving wheel (9) on one side close to the deep foundation pit body (1); the limiting assembly (12) comprises a threaded column (1201); a connecting sleeve (1202) is fixedly mounted on the other end of the threaded column (1201) away from the deep foundation pit body (1); and a rotating rod (1203) having a "cross" shaped cross section is fixedly mounted on the other end of the connecting sleeve (1202) away from the threaded column (1201).

3. A single-side formwork structure for a deep foundation pit according to claim 2, characterized in that: A bottom sleeve (1204) is fixedly mounted on the other end of the threaded column (1201) away from the rotating rod (1203); a limit plate (1205) is fixedly mounted on the other end of the bottom sleeve (1204) away from the rotating rod (1203); and the other side of the limit plate (1205) away from the threaded column (1201) contacts one side of the deep foundation pit body (1).

4. The single-side formwork structure for a deep foundation pit according to claim 1, characterized in that: The reinforcing assembly (13) comprises a screw (1301), the outer surface of the screw (1301) being threadedly connected to a positioning seat (1302) in contact with the formwork frame (6), a first reinforcing column (1303) being fixedly mounted on the other end of the positioning seat (1302) away from the formwork frame (6), the screw (1301) and the positioning seat (1302) being provided in equal numbers, a second reinforcing column (1304) being fixedly mounted on the outer surface of another positioning seat (1302), and the first reinforcing column (1303) and the second reinforcing column (1304) being in contact with each other.

5. The single-side formwork structure for a deep foundation pit according to claim 1, characterized in that: The formwork assembly (14) includes a first connecting steel frame (1401), a second connecting steel frame (1402) is arranged on the outer surface of the first connecting steel frame (1401), a connecting bolt (1404) is threadedly connected to the outer surface of the first connecting steel frame (1401) and extends into the interior of the second connecting steel frame (1402), the other end of the connecting bolt (1404) away from the second connecting steel frame (1402) is threadedly connected to a limiting sleeve (1405), and a bonding plate (1406) is arranged on the outer surface of the second connecting steel frame (1402), and the bonding plate (1406) is bonded to the outer surface of the cement casting formwork (4).

6. A single-side formwork structure for a deep foundation pit according to claim 5, characterized in that: The first connecting steel frames (1401) and the second connecting steel frames (1402) are both provided in equal numbers, wherein the first connecting steel frames (1401) are distributed in a horizontal manner, and the second connecting steel frames (1402) are distributed in a vertical manner.

7. The single-side formwork structure for a deep foundation pit according to claim 1, characterized in that: The connecting assembly (15) comprises a first connecting seat (1501) and a second connecting seat (1504); a threaded hole (1502) and a first limiting groove (1503) are provided on the outer surface of the first connecting seat (1501); a second limiting groove (1505) having the same size as the first limiting groove (1503) is provided on the outer surface of the second connecting seat (1504); and a bolt rod (1506) extending into the threaded hole (1502) is threadedly connected to the outer surface of the second connecting seat (1504).

8. The single-side formwork structure for a deep foundation pit according to claim 1, characterized in that: The positioning assembly (17) comprises a positioning steel (1701), a fixing sleeve (1702) is fixedly mounted on the outer surface of the positioning steel (1701), a positioning groove (1703) is provided on the inner surface of the fixing sleeve (1702), the positioning groove (1703) is matched with the positioning column (5), and the two are plug-connected and installed.

9. The single-side formwork structure for a deep foundation pit according to claim 1, characterized in that: A first reinforcing rod (8) is welded to the other end of the formwork frame (6) away from the deep foundation pit body (1), and the other end of the first reinforcing rod (8) away from the formwork frame (6) is fixedly mounted to the diagonal rod (10).

10. The construction process of the single-side formwork structure for a deep foundation pit according to claims 1 to 9 is characterized in that: The following steps are involved: S1: welding a first reinforcing rod (8) to the other end of the formwork frame (6) away from the deep foundation pit body (1), and fixing the other end of the first reinforcing rod (8) to the diagonal rod (10); S2: Install the reinforcement component (13), pass the screw (1301) through the formwork frame (6), install the positioning seats (1302) on the screw (1301) in sequence so that it is in close contact with the formwork frame (6), install the first reinforcement column (1303) on one of the positioning seats (1302), and install the second reinforcement column (1304) on the other positioning seat (1302) so that the first reinforcement column (1303) and the second reinforcement column (1304) are in contact, and then tighten the nut on the screw (1301); S3: Install the formwork assembly, first install the first connecting steel frame (1401) on one end of the formwork frame (6) close to the cement casting formwork (4), then place the second connecting steel frame (1402) on the outer surface of the first connecting steel frame (1401), connect the first connecting steel frame (1401) and the second connecting steel frame (1402) through the connecting bolt (1404), and thread the limiting sleeve (1405) at the other end of the connecting bolt (1404), and finally install the bonding plate (1406) on the outer surface of the second connecting steel frame (1402) so that it is bonded to the outer surface of the cement casting formwork (4); S4: Move the formwork frame (6) and the parts assembly above it, use the moving wheels (9) on the formwork frame (6) to move the formwork frame (6) on the temporary track or flat ground of the construction site, then pre-fix the positioning steel (1701) and the fixing sleeve (1702) and install the fixing sleeve (1702) on one end of the formwork frame (6) close to the cement casting formwork (4), so that the positioning groove (1703) on the inner surface of the fixing sleeve (1702) is aligned with the positioning column (5) on the outer surface of the cement casting slope (2), and then move the formwork frame (6) in a direction close to the deep foundation pit body (1), so that the positioning column (5) is inserted into the positioning groove (1703), thereby realizing the pre-positioning of the entire formwork frame (6); S5: After positioning, one end of the threaded column (1201) of the limiting assembly (12) is fixedly connected to the limiting plate (1205) through the bottom sleeve (1204), and one end with the bottom sleeve (1204) and the limiting plate (1205) is placed close to the deep foundation pit body (1) so that the limiting plate (1205) is in close contact with one side of the deep foundation pit body (1), and then the other end of the threaded column (1201) is threadedly connected to the formwork frame (6), and the connecting sleeve (1202) is driven to rotate by rotating the rotating rod (1203), so that the threaded column (1201) is rotated to achieve the limiting of the formwork frame (6). When the construction is completed, the threaded column (1201) can be rotated to release the positioning; S6: After a single formwork frame (6) is assembled and fixed, the first connecting seat (1501) can be installed on one end of the inclined rod (10), and the second connecting seat (1504) can be installed on the end of another inclined rod (10) to be connected, so that the first limiting groove (1503) and the second limiting groove (1505) are aligned, and the bolt rod (1506) is passed through the second limiting groove (1505) and then screwed into the threaded hole (1502), and the connecting rod (16) is placed in the first limiting groove (1503) and the second limiting groove (1505), and then the bolt rod (1506) is tightened to connect multiple formwork frames (6); S7: After completing the above steps, the single-sided formwork structure of the deep foundation pit is completed, and the concrete can be mixed and then poured into the formwork foundation (3) and the cement pouring formwork (4) for subsequent pouring or other construction operations.

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