Environment-friendly construction structure and construction method for groove section of empty groove of underground diaphragm wall

Abstract

The invention relates to an underground diaphragm wall empty groove section environment-friendly construction structure and a construction method, and belongs to the field of underground diaphragm wall construction technology.The underground diaphragm wall empty groove section environment-friendly construction structure comprises an underground diaphragm wall, a guide wall, a support, a truss and gravel, the underground diaphragm wall is embedded in the ground, and an empty groove is formed between the top of the underground diaphragm wall and the ground; the guide walls are embedded in the ground on the two sides of the diaphragm wall in the thickness direction, the supports are arranged at the two ends of the diaphragm wall in the width direction, the trusses are arranged in the empty grooves to support the guide walls and the supports, and the gravel filling is arranged in the empty grooves. The construction method has the advantages that the empty slot section is efficiently supported with a high filling effect, the follow-up trusses and gravels can be recycled, the construction cost is reduced, the requirement of environment-friendly construction is met, and the effect of efficiently constructing the empty slot section of the underground diaphragm wall in a low-cost, high-filling-effect and environment-friendly manner is achieved.

Description

Technical Field

[0001] This application relates to the field of diaphragm wall construction technology, and in particular to an environmentally friendly construction structure and construction method for diaphragm wall open trench sections. Background Technology

[0002] During the construction of diaphragm walls, to ensure the stability and construction safety of the underground structure, the top of the wall is usually not built to ground level. Instead, an unfilled trench section with a certain depth is intentionally left at the top of the wall. Although this design meets structural requirements, the existence of the trench section also brings construction safety hazards, such as trench wall instability, guide wall tilting and inward retraction, and construction equipment falling. Traditional methods for handling the trench section, such as pouring plain concrete or filling with earth, are not only complex and time-consuming to construct, but also require the subsequent crushing of plain concrete, resulting in high costs and low resource utilization efficiency. Especially today, with increasing emphasis on environmental protection and resource conservation, traditional methods are no longer sufficient to meet the requirements of green construction.

[0003] Currently, some empty trench sections are filled with crushed stone instead of traditional plain concrete or earthwork. This allows for the recycling of some of the crushed stone, shortening the construction period, reducing costs, and improving resource utilization. However, when using crushed stone to fill empty trench sections, the presence of numerous voids within the stone makes it difficult to increase the filling density. This limits the supporting effect of the crushed stone on the empty trench section and can easily lead to significant deformation of the guide wall. Therefore, how to construct empty trench sections of diaphragm walls efficiently, cost-effectively, with high filling efficiency, and in an environmentally friendly manner remains a pressing issue that needs to be addressed. Summary of the Invention

[0004] In order to carry out the construction of underground continuous wall hollow trench sections in an efficient, low-cost, high-filling and environmentally friendly manner, this application provides an environmentally friendly construction structure and construction method for underground continuous wall hollow trench sections.

[0005] This application provides an environmentally friendly construction structure for a diaphragm wall trench segment, employing the following technical solution: An environmentally friendly construction structure for a diaphragm wall with a hollow groove section includes a diaphragm wall, a guide wall, supports, a truss, and gravel. The diaphragm wall is embedded in the ground, and a hollow groove is formed between the top of the diaphragm wall and the ground. The guide wall is embedded in the ground on both sides in the thickness direction of the diaphragm wall. The supports are set at both ends in the width direction of the diaphragm wall. The truss is set in the hollow groove to support the guide wall and the supports. The gravel is filled in the hollow groove.

[0006] By adopting the above technical solution, the guide wall is first constructed on both sides of the thickness direction at the designated position of the diaphragm wall. Then, the diaphragm wall foundation pit is excavated, and the diaphragm wall is constructed, forming a hollow groove between the top of the diaphragm wall and the ground. Next, the supports are installed on both sides of the width direction of the diaphragm wall. Then, the truss is hoisted into the hollow groove, and then crushed stone is filled into the hollow groove. The truss and crushed stone support the guide wall and the supports, which can efficiently and effectively support the hollow groove section. Furthermore, the truss and crushed stone can be recycled and reused, reducing construction costs and meeting the requirements of environmentally friendly construction. Thus, the construction of the hollow groove section of the diaphragm wall is achieved in a high-efficiency, low-cost, high-filling-effect, and environmentally friendly manner.

[0007] Optionally, the truss includes a support frame, support rods, and a support arm. There are two support frames that are hinged to each other. Multiple support rods are provided between the two support frames. The length of the support rods is telescopic. The support arm is provided on one side of the support frame and is used to abut against a support.

[0008] By adopting the above technical solution, the support frame is hoisted into the empty slot in a retracted state. Then, the support rod is driven to extend, causing the two support frames to unfold away from each other. The two support frames can then be pressed against the guide walls on both sides of the diaphragm wall, and pressed against the support on one side of the empty slot by the support arm, so that the two support frames are pressed against the support on the other side of the empty slot. This can conveniently and stably support the support and guide wall. Subsequently, the support arm can be retracted and the support rod shortened to retract the two support frames.

[0009] Optionally, the support frame is provided with a diagonal bracing assembly for supporting the support frame. The diagonal bracing assembly includes a diagonal bracing sleeve, a diagonal bracing rod, and a connecting pin. Multiple diagonal bracing sleeves are provided at intervals on opposite sides of the support frame. The two ends of the diagonal bracing rod are respectively inserted into two adjacent diagonal bracing sleeves on opposite sides of the support frame. The connecting pin slides through the diagonal bracing sleeve and the diagonal bracing rod.

[0010] By adopting the above technical solution, the diagonal bracing rod is moved so that its two ends are respectively inserted into two adjacent diagonal bracing sleeves on opposite sides of the support frame. Then, the connecting pin is passed through the diagonal bracing sleeve and the diagonal bracing rod to position the diagonal bracing rod on the diagonal bracing sleeve. At this time, the diagonal bracing rod is inclined to support the support frame, which improves the load-bearing capacity of the support frame and reduces the possibility of the support frame bending or collapsing under pressure.

[0011] Optionally, the support rod includes a support sleeve, a sleeve rod, a threaded rod, a control component, and a first clamping component. The sleeve rod is slidably inserted into the support sleeve, the threaded rod is rotatably disposed on the support sleeve and threaded through the sleeve rod, the control component is disposed on the support sleeve and is used to drive the threaded rod to rotate, and one first clamping component is disposed on the support sleeve and one on the sleeve rod, the first clamping component being used to clamp onto the support frame.

[0012] By adopting the above technical solution, the first clamping member on the support sleeve and the sleeve rod is clamped to the two support frames respectively. Then, the threaded rod is driven to rotate by the control component. The threaded rod can drive the sleeve rod away from the support sleeve, thereby causing the support rod to extend and drive the two support frames to unfold. The threaded rod is driven to rotate in the opposite direction by the control component, thereby causing the threaded rod to retract into the support sleeve, thereby causing the two support frames to move closer and close together.

[0013] Optionally, the control component includes a worm gear, a worm, and a rocker arm. The worm gear is coaxially mounted on the threaded rod. An operating groove is provided on the support sleeve. The worm is rotatably mounted on the bottom wall of the operating groove and meshes with the worm gear. The portion of the worm located in the operating groove is polygonal. The rocker arm is sleeved on the portion of the worm located in the operating groove.

[0014] By adopting the above technical solution, the construction personnel move the rocker arm so that it fits onto the polygonal end of the worm located in the operating groove. Then, by rotating the rocker arm, the rocker arm drives the worm to rotate, which in turn drives the worm wheel to rotate. This allows for convenient control of the rotation of the threaded rod. Furthermore, the self-locking mechanism of the worm wheel and worm makes the threaded rod more stable, which in turn makes the support rod more stable. After adjustment, the rocker arm is removed, and the side wall of the operating groove protects the worm, reducing the possibility of damage to the worm caused by subsequent filling with crushed stone.

[0015] Optionally, the support arm includes a positioning sleeve, a second clamping member, an extension rod, and a positioning seat. The second clamping member is disposed on the positioning sleeve and used to clamp onto the support frame. The extension rod is slidably inserted into the positioning sleeve, and the positioning seat is threaded onto the extension rod and used to abut against the positioning sleeve.

[0016] By adopting the above technical solution, the second clamping member is clamped onto the support frame, so that the positioning sleeve is positioned on the support frame. Then, the extension rod is driven to extend out of the positioning sleeve and press against the support. The positioning seat is then turned so that the positioning seat presses against the positioning sleeve, restricting the extension rod from retracting into the positioning sleeve. This allows the extension rod to maintain its position against the support and support the support.

[0017] Optionally, the diaphragm wall includes a locking pipe, a reinforcing cage, a guide pipe, filling concrete, and a locking element. One locking pipe is inserted into the ground on each side of the diaphragm wall in the width direction. The locking pipe is higher than the diaphragm wall. The reinforcing cage is placed between the two locking pipes. The guide pipe is inserted into the reinforcing cage. The filling concrete is filled between the two locking pipes. The locking element is placed on the reinforcing cage and is used for positioning and support.

[0018] By adopting the above technical solution, after excavating the foundation trench for the diaphragm wall, the interlocking pipes are first hoisted to both sides of the diaphragm wall in the width direction, so that the interlocking pipes are inserted into the foundation. Then, the reinforcing cage is hoisted between the two interlocking pipes, and the locking parts are installed on the reinforcing cage. Then, the guide pipe is inserted on the reinforcing cage. When pouring the filling concrete, the filling concrete on the guide pipe is used to guide the concrete, so that the filling concrete is gradually filled from the bottom of the reinforcing cage upwards, thus conveniently completing the pouring of the diaphragm wall.

[0019] Optionally, the locking component includes a locking frame, a side plate, a locking screw, and a protrusion. The locking frame is disposed on the reinforcing cage, the support is slidably inserted into the locking frame, the side plate is slidably disposed on one side of the locking frame, the locking screw is threaded through the locking frame and abuts against the side plate, and the protrusion is disposed on the side plate and is used to be embedded in the support.

[0020] By adopting the above technical solution, when hoisting the steel cage, the locking frame is installed on the steel cage. After the subsequent diaphragm wall is poured, the support is hoisted into the locking frame, and then the locking screw is turned so that the side plate slides towards the support and abuts against the support. At the same time, the protrusion is embedded in the support, which can stably position the support in the locking frame, thus completing the positioning and installation of the support conveniently and efficiently.

[0021] Optionally, the conduit includes an insertion section, a pouring section, and a receiving hopper. The insertion section is inserted into the reinforcing cage and extends above it. The pouring section is connected to the insertion section via a clamp, and the receiving hopper is connected to the pouring section.

[0022] By adopting the above technical solution, when pouring the filling concrete, the filling concrete is input from the receiving hopper, enters the insertion section through the pouring section, and then flows out from the bottom of the reinforcing cage. This allows the filling concrete to accumulate upwards from the bottom of the diaphragm wall foundation trench, squeezing out the mud in the trench and ensuring the structural strength of the diaphragm wall formed by pouring the filling concrete. After the diaphragm wall is formed, the clamps connecting the pouring section and the connecting section are removed, allowing the pouring section and the receiving hopper to be dismantled and recycled, thus reducing construction costs.

[0023] This application provides an environmentally friendly construction method for hollow sections of underground continuous wall, which adopts the following technical solution: An environmentally friendly construction method for hollow sections of underground diaphragm walls includes the following steps: S1: Excavate the guide wall foundation trench and pour the guide wall; S2: Excavate the foundation trench for the diaphragm wall, hoist and place the interlocking pipe, hoist and place the reinforcing cage, hoist and place the guide pipe, and pour the filling concrete; S3: Lifting support, positioned by locking components; S4: Hoist the truss so that the support frame is pressed against the guide wall and the brace is pressed against the support. Fill with gravel and pull out the locking pipe. S5: Construction of the next trench section.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. It provides efficient and high-filling support for the hollow section, and the subsequent trusses and crushed stone can be recycled, reducing construction costs and meeting the requirements of environmentally friendly construction. This enables efficient, low-cost, high-filling and environmentally friendly construction of the hollow section of the underground continuous wall. 2. The two support frames can be pressed against the guide walls on both sides of the diaphragm wall, and pressed against the support on one side of the empty groove by the support arm, so that the two support frames are pressed against the support on the other side of the empty groove, which can conveniently and stably support the support and guide wall. Afterwards, the support arm can be retracted and the support rod shortened to retract the two support frames. 3. Hoist the support into the locking frame, then turn the locking screw to make the side plate slide towards the support. The side plate presses against the support, and the protrusion is embedded in the support. This will securely position the support in the locking frame, making the positioning and installation of the support convenient and efficient. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the environmentally friendly construction structure of the underground continuous wall hollow trench segment according to an embodiment of this application.

[0026] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the structure during the pouring of filling concrete in an embodiment of this application.

[0028] Figure 4 This is a cross-sectional structural diagram of the locking component according to an embodiment of this application.

[0029] Figure 5 This is a schematic diagram of the truss structure according to an embodiment of this application.

[0030] Figure 6 This is a schematic diagram of the support rod according to an embodiment of this application (partial cross-section of the support sleeve is shown in the figure).

[0031] Attached reference numerals: 1. Diaphragm wall; 11. Locking pipe; 12. Reinforcing cage; 13. Conduit; 131. Insertion section; 132. Casting section; 133. Receiving hopper; 14. Filling concrete; 15. Locking element; 151. Locking frame; 152. Side plate; 153. Locking screw; 154. Protrusion; 2. Guide wall; 3. Support; 4. Truss; 41. Support frame; 42. Support rod; 421 422. Support sleeve; 423. Sleeve rod; 424. Threaded rod; 425. Control component; 4241. Worm gear; 4242. Worm; 4243. Rocker arm; 425. First clamping component; 43. Support arm; 431. Positioning sleeve; 432. Second clamping component; 433. Extension rod; 434. Positioning seat; 5. Crushed stone; 6. Diagonal brace assembly; 61. Diagonal brace sleeve; 62. Diagonal brace rod; 63. Connecting pin. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0033] This application discloses an environmentally friendly construction structure and construction method for underground continuous wall hollow trench sections.

[0034] Reference Figure 1 , Figure 2 The environmentally friendly construction structure of the underground continuous wall hollow section includes diaphragm wall 1, guide wall 2, support 3, truss 4, and crushed stone 5.

[0035] Reference Figure 1 , Figure 2 Guide walls 2 are embedded in the ground on both sides of the designed location of the diaphragm wall 1 in the thickness direction. In this embodiment, the guide walls 2 are formed by excavating the foundation trench with a trenching machine, tying steel bars in the foundation trench, and finally pouring concrete. The guide walls 2 block and support the soil on both sides of the diaphragm wall 1, improve the stability of the trenching position of the diaphragm wall 1, provide a reference for the subsequent excavation of the foundation trench of the diaphragm wall 1, and provide support and guidance for the trenching machine excavating the diaphragm wall 1.

[0036] Reference Figure 2 , Figure 3A diaphragm wall 1 is embedded in the ground between two guide walls 2. A groove is formed between the top of the diaphragm wall 1 and the ground. The diaphragm wall 1 includes a locking pipe 11, a reinforcing cage 12, a conduit 13, filling concrete 14, and a locking element 15. One locking pipe 11 is inserted into the ground on each side of the diaphragm wall 1 in the width direction. The locking pipe 11 is higher than the height of the diaphragm wall 1. The reinforcing cage 12 is installed in the foundation groove of the diaphragm wall 1 between the two locking pipes 11. The conduit 13 is inserted into the reinforcing cage 12. The conduit 13 includes a... The structure consists of an insertion section 131, a pouring section 132, and a receiving hopper 133. The insertion section 131 is inserted into the reinforcing cage 12 and extends to a position near the bottom of the foundation trench of the diaphragm wall 1. The pouring section 132 abuts against the insertion section 131 and is connected to the insertion section 131. The connection between the pouring section 132 and the insertion section 131 is sealed and fixed by a clamp. The receiving hopper 133 is connected and installed at the end of the pouring section 132 away from the insertion section 131. The filling concrete 14 is filled between the two locking pipes 11.

[0037] After excavating the foundation trench for the diaphragm wall 1, slurry is injected into the trench to provide support. Then, one interlocking pipe 11 is inserted into the foundation on each side of the trench width. The reinforcing cage 12 is then hoisted between the two interlocking pipes 11. The insertion section 131 is then inserted into the reinforcing cage 12, and the pouring section 132 is connected to the insertion section 131 via a clamp. Filling concrete 14 is then poured into the receiving hopper 133. Guided by the pouring section 132 and the insertion section 131, the filling concrete 14 flows towards the bottom of the reinforcing cage 12, gradually filling upwards from the bottom of the reinforcing cage 12, squeezing out the slurry in the trench and ensuring... The structural strength of the diaphragm wall 1 is enhanced by pouring and filling concrete 14. After the filling concrete 14 covers the reinforcing cage 12 and reaches the elevation of the diaphragm wall 1, the pouring is stopped. After the filling concrete 14 reaches the design strength and forms the diaphragm wall 1, the clamp connecting the pouring section 132 and the insertion section 131 is removed, and the pouring section 132 and the receiving hopper 133 can be removed. The locking pipe 11 can also be lifted out, realizing the recycling of the pouring section 132 and the locking pipe 11, reducing construction costs. The locking pipe 11 can also make the side of the formed diaphragm wall 1 better formed, thus better connecting with the next section of the diaphragm wall 1 and improving the connection effect of the two sections of the diaphragm wall 1.

[0038] Reference Figure 3 , Figure 4One locking member 15 is installed on the top of each of the two sides of the reinforcing cage 12 in the width direction. The locking member 15 is used to position the support 3. The locking member 15 includes a locking frame 151, a side plate 152, a locking screw 153, and a protrusion 154. The locking frame 151 is welded to the reinforcing cage 12. The upper end of the locking frame 151 is open. The lowest point of the opening of the locking frame 151 is higher than the highest point of the diaphragm wall 1. The support 3 is slidably inserted into the locking frame 151 from above. In this embodiment, the support 3 is a rectangular steel section. In other embodiments... In this embodiment, I-beams, H-beams, etc., can also be used; one side of the locking frame 151 is open, the side plate 152 is slidably installed on the open side of the locking frame 151, the locking screw 153 is threaded through the locking frame 151, the locking screw 153 extends into the locking frame 151 and abuts against the side plate 152, the protrusion 154 is installed on the side of the side plate 152 near the support 3, the cross-sectional size of the protrusion 154 gradually decreases from near the side plate 152 to away from the side plate 152, and the support 3 is provided with a trapezoidal groove for the protrusion 154 to be inserted.

[0039] After hoisting the steel cage 12 into the foundation trench of the diaphragm wall 1, a locking frame 151 is welded on each side of the steel cage 12 in the width direction. After pouring the filling concrete 14, the filling concrete 14 fills the lower part of the locking frame 151 without opening, and firmly positions the locking frame 151. When assembling the support 3, the support 3 is hoisted into the locking frame 151, and then the locking screw 153 is turned so that the side plate 152 slides towards the support 3. The side plate 152 can then be pressed against the support 3. The protrusion 154 on the side plate 152 is embedded in the support 3, preventing the support 3 from falling out of the locking frame 151. The support 3 can then be firmly positioned in the locking frame 151, and the positioning and installation of the support 3 can be completed conveniently and efficiently.

[0040] Reference Figure 2 , Figure 5 Truss 4 is installed in the slot above the diaphragm wall 1, and gravel 5 is filled in the slot. Truss 4 is used to support guide wall 2 and support 3. Truss 4 includes support frame 41, support rod 42 and support arm 43. Two support frames 41 are installed and the two support frames 41 are hinged to each other. In this embodiment, support frame 41 is a rectangular frame welded from four steel sections. Diagonal bracing assembly 6 is installed on support frame 41. Diagonal bracing assembly 6 is used to support support frame 41. Diagonal bracing assembly 6 includes diagonal bracing sleeve 61, diagonal bracing rod 62 and connecting pin 63. Multiple diagonal bracing sleeves 61 are installed at intervals on the inner walls of the two opposite long sides of support frame 41. The two ends of diagonal bracing rod 62 are respectively inserted into two adjacent diagonal bracing sleeves 61 on the inner walls of the two opposite long sides. Connecting pin 63 passes through diagonal bracing sleeve 61 and into diagonal bracing rod 62.

[0041] When welding the support frame 41, multiple diagonal bracing sleeves 61 are welded to the steel sections of the support frame 41, and diagonal bracing rods 62 are inserted into the diagonal bracing sleeves 61. Then, another steel section of the support frame 41 is moved so that the other end of the diagonal bracing rod 62 is inserted into the diagonal bracing sleeve 61 on the other steel section. Then, multiple steel sections of the support frame 41 are welded together. Then, connecting pins 63 are inserted into the diagonal bracing sleeves 61 and diagonal bracing rods 62 to position the diagonal bracing rods 62 on the diagonal bracing sleeves 61. Subsequently, the diagonal bracing rods 62 can be inclined to support the support frame 41, thereby improving the load-bearing capacity of the support frame 41 and thus improving the subsequent support effect of the support frame 41 on the retaining wall 3, reducing the possibility of the support frame 41 bending or collapsing under pressure.

[0042] Reference Figure 5 , Figure 6 Multiple support rods 42 are installed between two support frames 41. The length of the support rods 42 is telescopic. Each support rod 42 includes a support sleeve 421, a sleeve rod 422, a threaded rod 423, a control component 424, and a first clamping component 425. The support sleeve 421 is hollow inside and open at one end. The sleeve rod 422 is slidably inserted into the support sleeve 421. In this embodiment, both the support sleeve 421 and the sleeve rod 422 are rectangular steel sections. The opening shape of the support sleeve 421 is the same as the cross-sectional shape of the sleeve rod 422. The threaded rod 423 is rotatably installed on the inner bottom wall of the support sleeve 421 and is threaded through the sleeve rod 422.

[0043] The control component 424 is mounted on the support sleeve 421 and is used to drive the threaded rod 423 to rotate. The control component 424 includes a worm gear 4241, a worm 4242, and a rocker arm 4243. The worm gear 4241 is coaxially sleeved on the threaded rod 423, and the worm 4242 is rotatably mounted on the support sleeve 421. The worm 4242 extends into the support sleeve 421 and meshes with the worm gear 4241. An operating groove is provided on the side wall of the support sleeve 421, and the worm 4242 is located in the operating groove. The cross-section of the portion of 242 located in the operating groove is polygonal. The rocker arm 4243 has a polygonal groove that matches the portion of the worm 4242 located in the operating groove. The rocker arm 4243 is sleeved on the portion of the worm 4242 located in the operating groove. Through the detachable connection between the rocker arm 4243 and the worm 4242, the side wall of the operating groove can protect the worm 4242 after the rocker arm 4243 is removed from the worm 4242, reducing the possibility of damage to the worm 4242 caused by subsequent filling of gravel 5.

[0044] One first clamping member 425 is installed on the support sleeve 421 and the sleeve rod 422 respectively. The first clamping member 425 is used to clamp onto the support frame 41. In this embodiment, the first clamping member 425 includes a clamping seat, a clamping plate and a bidirectional screw. The clamping seat is hinged to the support sleeve 421 or the sleeve rod 422. Two clamping plates are slidably installed on the clamping seat facing each other. The bidirectional screw is rotatably installed on the clamping seat and threadedly connected to both clamping plates. The two threads of the bidirectional screw connected to the two clamping plates are in opposite directions.

[0045] After hoisting the two support frames 41 into the empty slot in a folded state, the two support frames 41 are pressed against one of the supports 3. Then, the two support frames 41 are rotated away from each other to unfold. Next, one of the support rods 42 is moved between the two support frames 41, so that the two clamping plates on the support sleeve 421 and the two clamping plates on the sleeve rod 422 are respectively located on both sides of the support frame 41. Then, the double-ended screw is turned so that the two clamping plates come closer to each other, and the two clamping plates can clamp the support frame 41. The support sleeve 421 and the sleeve rod 422 are respectively positioned on the two support frames 41. Then, the rocker arm 4243 is inserted into the operating slot and sleeved onto the worm gear 4242. Rotating the rocker arm 4243 will drive the worm gear 4242 to rotate. The worm gear 4242 will drive the worm wheel 4241 to rotate. The worm wheel 4241 will drive the threaded rod 423 to rotate. The threaded rod 423 can then... The drive rod 422 is moved away from the support sleeve 421, which in turn causes the support rod 42 to extend, causing the two support frames 41 to move further away and press against the two guide walls 2. Through the self-locking mechanism of the worm gear 4241 and worm 4242, the threaded rod 423 can be made more stable, which in turn makes the support rod 42 more stable. After the remaining support rods 42 are adjusted to the correct length, they are installed between the two support frames 41 to support the support frames 41. At this time, the two support frames 41 can provide stable support for the two guides. When the support frames 41 need to be removed later, the rocker arm 4243 is sleeved on the worm 4242, which drives the threaded rod 423 to rotate in the opposite direction, causing the support rod 42 to shorten. This releases the clamping of the first clamping member 425 on the support frame 41, allowing the multiple support rods 42 to be removed from between the two support frames 41. Then, the two support frames 41 can be retracted and lifted out for reuse.

[0046] Reference Figure 5The support arm 43 is installed on one side of the support frame 41 in the width direction. The support arm 43 is used to abut against the support 3. The support arm 43 includes a positioning sleeve 431, a second clamping member 432, an extension rod 433 and a positioning seat 434. The second clamping member 432 is installed on the positioning sleeve 431 and is used to clamp onto the support frame 41. In this embodiment, the structure of the second clamping member 432 is the same as that of the first clamping member 425. The positioning seat 434 is open at one end away from the support frame 41. The extension rod 433 is slidably inserted into the positioning sleeve 431. The positioning seat 434 is threaded onto the extension rod 433 and abuts against the positioning sleeve 431.

[0047] After the two support frames 41 are driven to unfold and press against the two guide walls 2, the positioning sleeve 431 is moved so that the second clamping member 432 clamps the end of the support frame 41 that has a gap with the support 3. Then, the extension rod 433 is pulled out of the positioning sleeve 431 so that the extension rod 433 presses against the support 3. Then, the positioning seat 434 is turned so that the positioning seat 434 presses against the positioning sleeve 431, restricting the extension rod 433 from retracting into the positioning sleeve 431, so that the extension rod 433 remains pressed against the support 3. At this time, one end of the support frame 41 presses against the support 3 on one side, and the extension rod 433 at the other end of the support frame 41 presses against the support 3 on the other side, so that the two supports 3 can be easily supported.

[0048] The following technical solution is adopted for the environmentally friendly construction method of the hollow trench section of the underground diaphragm wall: An environmentally friendly construction method for hollow sections of underground diaphragm walls includes the following steps: S1: Excavate the foundation trench for guide wall 2 and pour guide wall 2; S2: Excavate the foundation trench for the diaphragm wall 1, hoist and place the interlocking pipe 11, hoist and place the steel cage 12, hoist and place the guide pipe 13, and pour the filling concrete 14; S3: Lifting support 3, the support 3 is positioned by locking element 15; S4: Hoist the truss 4 so that the support frame 41 is pressed against the guide wall 2 and the support arm 43 is pressed against the support 3, fill with gravel 5, and pull out the locking pipe 11. S5: Construction of the next trench section.

[0049] The implementation principle of the environmentally friendly construction structure and construction method for a diaphragm wall trench section in this application embodiment is as follows: First, excavate the foundation pit of the guide wall 2, pour concrete into the guide pit to form a guide wall 2 on both sides of the thickness direction of the diaphragm wall 1, then excavate the foundation trench of the diaphragm wall 1 between the two guide walls 2, and hoist and insert two interlocking pipes 11 into the foundation on both sides of the width direction of the diaphragm wall 1, then hoist the reinforcing cage 12 between the two interlocking pipes 11, hoist the guide pipe 13 into the reinforcing cage 12, pour filling concrete 14 through the guide pipe 13, and the diaphragm wall 1 is formed after the filling concrete 14 is formed. Then, remove the pouring section 132 of the guide pipe 13 from the insertion section 131, hoist out the interlocking pipes 11, and then hoist the supports 3 to both sides of the width direction of the diaphragm wall 1, and lock them on the reinforcing cage 12. Part 15 fixes the support 3, and then the two support frames 41 are hoisted into the empty groove above the diaphragm wall 1, so that the two support frames 41 are unfolded. The support rod 42 supports the two support frames 41, and the two support frames 41 can support the guide walls 2 on both sides, and drive the support arm 43 to press against the support 3. The support arm 43 and the two support frames 41 support the two supports 3 respectively. Then, the crushed stone 5 is filled into the empty groove. The truss 4 and the crushed stone 5 can support the guide wall 2 and the support 3, thus providing efficient and high filling effect support for the empty groove section. After the crushed stone 5 is excavated and recycled, the truss 4 and the support 3 can also be disassembled and reused, reducing construction costs and meeting the requirements of environmentally friendly construction. Thus, the construction of the underground continuous wall empty groove section is achieved in an efficient, low-cost, high-filling effect and environmentally friendly manner.

[0050] 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. An environmentally friendly construction structure for a diaphragm wall trench segment, characterized in that: It includes a diaphragm wall (1), a guide wall (2), a support (3), a truss (4), and gravel (5). The diaphragm wall (1) is embedded in the ground. A groove is formed between the top of the diaphragm wall (1) and the ground. The guide wall (2) is embedded in the ground on both sides of the thickness direction of the diaphragm wall (1). The support (3) is set at both ends of the width direction of the diaphragm wall (1). The truss (4) is set in the groove to support the guide wall (2) and the support (3). The gravel (5) is filled in the groove.

2. The environmentally friendly construction structure for a diaphragm wall hollow trench segment according to claim 1, characterized in that: The truss (4) includes a support frame (41), a support rod (42) and a support arm (43). There are two support frames (41) that are hinged to each other. There are multiple support rods (42) between the two support frames (41). The length of the support rods (42) is telescopic. The support arm (43) is located on one side of the support frame (41) and is used to abut against the support (3).

3. The environmentally friendly construction structure for a diaphragm wall hollow section according to claim 2, characterized in that: The support frame (41) is provided with a diagonal bracing assembly (6) for supporting the support frame (41). The diagonal bracing assembly (6) includes a diagonal bracing sleeve (61), a diagonal bracing rod (62) and a connecting pin (63). Multiple diagonal bracing sleeves (61) are provided at intervals on opposite sides of the support frame (41). The two ends of the diagonal bracing rod (62) are respectively inserted into two adjacent diagonal bracing sleeves (61) on opposite sides of the support frame (41). The connecting pin (63) slides through the diagonal bracing sleeve (61) and the diagonal bracing rod (62).

4. The environmentally friendly construction structure for a diaphragm wall trench segment according to claim 2, characterized in that: The support rod (42) includes a support sleeve (421), a sleeve rod (422), a threaded rod (423), a control element (424), and a first clamping element (425). The sleeve rod (422) is slidably inserted into the support sleeve (421). The threaded rod (423) is rotatably disposed on the support sleeve (421) and threaded through the sleeve rod (422). The control element (424) is disposed on the support sleeve (421) and is used to drive the threaded rod (423) to rotate. One first clamping element (425) is provided on the support sleeve (421) and one on the sleeve rod (422). The first clamping element (425) is used to clamp onto the support frame (41).

5. The environmentally friendly construction structure for a diaphragm wall hollow trench segment according to claim 4, characterized in that: The control component (424) includes a worm gear (4241), a worm (4242), and a rocker arm (4243). The worm gear (4241) is coaxially mounted on the threaded rod (423). An operating groove is provided on the support sleeve (421). The worm (4242) is rotatably mounted on the bottom wall of the operating groove and meshes with the worm gear (4241). The portion of the worm (4242) located in the operating groove is polygonal. The rocker arm (4243) is sleeved on the portion of the worm (4242) located in the operating groove.

6. The environmentally friendly construction structure for a diaphragm wall trench segment according to claim 2, characterized in that: The support arm (43) includes a positioning sleeve (431), a second clamping member (432), an extension rod (433), and a positioning seat (434). The second clamping member (432) is disposed on the positioning sleeve (431) and is used to clamp onto the support frame (41). The extension rod (433) is slidably inserted into the positioning sleeve (431). The positioning seat (434) is threaded onto the extension rod (433) and is used to abut against the positioning sleeve (431).

7. The environmentally friendly construction structure for a diaphragm wall hollow trench segment according to claim 1, characterized in that: The diaphragm wall (1) includes a locking pipe (11), a reinforcing cage (12), a guide pipe (13), filling concrete (14), and a locking element (15). The locking pipe (11) is inserted into the ground on both sides of the width direction of the diaphragm wall (1). The locking pipe (11) is higher than the diaphragm wall (1). The reinforcing cage (12) is set between the two locking pipes (11). The guide pipe (13) is inserted on the reinforcing cage (12). The filling concrete (14) is filled between the two locking pipes (11). The locking element (15) is set on the reinforcing cage (12) and is used for positioning support (3).

8. The environmentally friendly construction structure for a diaphragm wall hollow trench segment according to claim 7, characterized in that: The locking component (15) includes a locking frame (151), a side plate (152), a locking screw (153), and a protrusion (154). The locking frame (151) is mounted on the reinforcing cage (12). The support (3) is slidably inserted into the locking frame (151). The side plate (152) is slidably mounted on one side of the locking frame (151). The locking screw (153) is threaded through the locking frame (151) and abuts against the side plate (152). The protrusion (154) is mounted on the side plate (152) and is used to be embedded in the support (3).

9. The environmentally friendly construction structure for a diaphragm wall hollow trench segment according to claim 7, characterized in that: The conduit (13) includes an insertion section (131), a pouring section (132), and a receiving hopper (133). The insertion section (131) is inserted into the reinforcing cage (12) and extends above the reinforcing cage (12). The pouring section (132) is connected to the insertion section (131) via a clamp, and the receiving hopper (133) is connected to the pouring section (132).

10. A construction method for an environmentally friendly construction structure for a diaphragm wall trench segment as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Excavate the foundation trench for the guide wall (2) and pour the guide wall (2); S2: Excavate the foundation trench of the diaphragm wall (1), hoist and place the lock pipe (11), hoist and place the steel cage (12), hoist and place the guide pipe (13), and pour the filling concrete (14). S3: Lifting support (3), positioning support (3) by locking part (15); S4: Hoist the truss (4) so ​​that the support frame (41) is pressed against the guide wall (2) and the support arm (43) is pressed against the support (3), fill with gravel (5), and pull out the lock pipe (11). S5: Construction of the next trench section.

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