A construction method for a steel structure underground wall with a reserved installation door opening

Abstract

The present invention discloses a construction method for a steel structure underground wall with a reserved installation door opening, which relates to the technical field of underground construction. a: Erect a frame above the foundation pit, set a crane at the top of the frame, connect the top of the crane to the top of the support plate through a rope, symmetrically set hydraulic cylinders at the top of the frame, and connect the output ends of the hydraulic cylinders to the top of the formwork through long rods; b: First, lower the formwork, then place the steel reinforcement cage above the support plate, and pour concrete onto the support plate; c: After 12 hours, move the formwork upward to separate the formwork from the concrete; d: Lower the support plate into the foundation pit, then lower the formwork again, then continue to place the steel reinforcement cage above the concrete, and repeat the concrete pouring and vibration of the concrete. By setting the support plate to hold the steel reinforcement cage above the foundation pit, after the formwork leaves the concrete, it is convenient to observe the defects on the outside when the concrete wall is formed, thereby facilitating the repair of the defects and the spraying of waterproof mortar on the wall.

Description

Technical Field

[0001] The present invention relates to the technical field of underground construction, and specifically to a construction method for a steel structure underground wall with a reserved installation door opening. Background Art

[0002] Traditionally, for the construction of underground walls, a foundation pit groove is dug on the ground, then a steel reinforcement cage is placed in the foundation pit groove, and then concrete is poured in the foundation pit groove to form an underground wall. When pouring concrete in the foundation pit, it is impossible to determine the quality of the door opening in the foundation pit groove and the surface of the wall. For the door openings in the underground wall through which equipment such as cables need to be installed, it is also inconvenient to check whether concrete has entered the door openings, and it is also inconvenient to repair the cracks on the surface of the concrete wall.

[0003] The defects existing in the existing underground wall construction technologies are as follows:

[0004] 1. The prior art KR1020130021949A discloses an underground structure wall reinforcement structure and an underground structure construction method. This technology cannot observe the forming quality of concrete by pouring concrete inside the groove, and it is inconvenient to repair the defects on the concrete wall surface. Therefore, a construction method for a steel structure underground wall with a reserved installation door opening that can conveniently observe the forming quality of concrete and facilitate the repair of the concrete wall is needed to solve this problem.

[0005] 2. The prior art KR101079188B1 discloses an underground structure wall construction method. This technology requires a closed formwork for limiting concrete to be arranged outside the steel reinforcement cage, and the installation and removal of the formwork need to be manually carried out, with a complex operation process and low efficiency. Therefore, a construction method for a steel structure underground wall with a reserved installation door opening that does not require manual removal of the formwork is needed to solve this problem.

[0006] 3. The prior art JP2014167228A discloses a basement wall and a construction method. When removing the formwork outside the concrete, when the outer surface of the concrete rubs against the formwork and causes concrete protrusions on the concrete surface, it is easy to cause the quality of the concrete wall to deteriorate. Therefore, a construction method for a steel structure underground wall with a reserved installation door opening that can flatten the concrete protrusions generated on the surface of the concrete wall is needed to solve this problem.

[0007] 4. The prior art CN108104111A discloses a high-precision underground wall construction method. When vibrating the concrete, a vibrator needs to be inserted into the concrete interior. Each time the concrete is vibrated, the vibrator needs to be inserted into the concrete from different places multiple times, with a complex operation process and low efficiency. Therefore, a construction method for a steel structure underground wall with a reserved installation door opening that can vibrate the concrete is needed to solve this problem. Summary of the Invention

[0008] An object of the present application is to provide a construction method for a steel structure underground wall with a reserved installation door opening, which can solve the technical problems proposed in the prior art.

[0009] To achieve the above object, the present invention provides the following technical solution: A construction method for a steel structure underground wall with a reserved installation door opening, the construction method for the steel structure underground wall with a reserved installation door opening includes the following steps:

[0010] a: Dig a foundation pit on the ground, erect a frame above the foundation pit, set a crane on the top of the frame, the crane is connected to the top of the pallet through a rope, hydraulic cylinders are symmetrically arranged on the top of the frame, the output end of the hydraulic cylinder is connected to the top of the formwork through a long rod, the two formworks are symmetrically distributed left and right, blocks are symmetrically arranged on the side of the formwork, a rotating wheel is installed inside the block, then a plurality of vibrators are arranged on the side of the formwork, then a plurality of annular bodies are arranged on the side of the formwork, a vibrating rod is installed through the inside of the annular body, both ends of the vibrating rod penetrate through both sides of the formwork respectively, and bolts are arranged through the top of the annular body to squeeze and fix the vibrating rod;

[0011] b: First, lower the formwork so that the side of the formwork contacts the side of the pallet, then place the steel reinforcement cage above the pallet, and the steel reinforcement cage is located inside the left and right formworks, and then pour concrete into the space formed by the pallet and the two formworks, so that the concrete wraps the steel reinforcement cage, thereby forming a wall;

[0012] c: When the height of the concrete is flush with the height of the formwork, stop pouring the concrete, then pull the vibrating rod outward so that the vibrating rod no longer inserts into the concrete. After 12 hours, the hydraulic cylinder drives the formwork to move upward, separating the formwork from the concrete, and at the same time, the rotating wheel flattens the rough places on both sides of the concrete;

[0013] d: Then the pallet moves downward into the foundation pit, and then the formwork moves downward again, and the bottom of the formwork is 10-15 cm higher than the top of the concrete on the pallet, and then continue to place the steel reinforcement cage above the concrete, and repeat the concrete pouring and vibrating of the concrete until the pallet touches the bottom of the foundation pit.

[0014] Preferably, the following steps are further included in the step a: A plurality of limit frames are sleeved on the tops of the left and right formworks.

[0015] Preferably, the following steps are further included in the step b: Before pouring the concrete, insert pipes and a frame door in the left and right directions in the steel reinforcement cage to form a door opening, so that the poured concrete leaves a door opening.

[0016] Preferably, the following steps are further included in step b: before pouring concrete onto the pallet, move the vibrating rod inward to contact the steel reinforcement cage. At the same time, the vibrator vibrates to drive the formwork to vibrate, and the vibrating formwork drives the vibrating rod to vibrate. The vibrating rod causes the steel reinforcement cage to vibrate, thereby making the concrete easier to vibrate and flow to fill the gap between the two formworks.

[0017] Preferably, the following steps are further included in step c: during the upward movement of the formwork, the staff adds concrete to repair the cracks and defects on the outer side of the concrete on the pallet.

[0018] Preferably, the following steps are further included in step d: when the pallet moves downward, spray waterproof mortar on the outer side of the concrete.

[0019] Preferably, the height of the formwork is 1 meter.

[0020] Preferably, the planes where the inner sides of the left and right formworks are located are respectively tangent to the curved surfaces of the left and right rotating wheels.

[0021] Preferably, the distance between the axes of two adjacent vibrating rods at the same height is 50 cm.

[0022] Preferably, both the pallet and the formwork are made of stainless steel plates.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] By setting a pallet to support the steel reinforcement cage above the foundation pit, after the formwork leaves the concrete, it is convenient to observe the defects on the outer side when the concrete wall is formed, thereby facilitating the repair of the defects and the spraying of waterproof mortar on the wall.

[0025] The formwork set in the present invention only needs to move up and down to leave from the outer side of the concrete wall, and there is no need to manually remove the formwork, so the removal efficiency of the formwork is higher.

[0026] By setting the rotating wheels in the present invention, during the downward movement of the pallet driving the concrete wall, the raised parts of the cement generated by the friction between the side of the concrete wall and the formwork can be flattened, thereby improving the surface quality of the concrete wall.

[0027] By setting the vibrating rod and the vibrator in the present invention, the vibrating rod can contact the steel reinforcement cage, so that when the vibrator vibrates, it can drive the formwork and the vibrating rod to vibrate. The vibrating rod drives the steel coil cage to vibrate, thereby making the concrete easier to vibrate and fill the internal pores of the steel reinforcement cage, and improving the forming quality of the concrete in the steel reinforcement cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the construction method flow chart of the present invention;

[0029] Figure 2 Schematic construction structure diagram of the present invention;

[0030] Figure 3 Schematic template structure diagram of the present invention;

[0031] Figure 4 Schematic diagram of the rotating wheel and ring body structure of the present invention.

[0032] In the figure: 1, ground; 2, framework; 3, crane; 4, rope; 5, pallet; 6, hydraulic cylinder; 7, template; 8, block; 9, rotating wheel; 10, vibrator; 11, ring body; 12, vibrating rod; 13, foundation pit; 14, limit frame. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Embodiment 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a construction method for a steel structure underground wall with a reserved installation opening;

[0037] The construction method of the steel structure underground wall with a reserved installation door opening includes the following steps:

[0038] a: Excavate a foundation pit 13 on the ground 1, erect a frame body 2 above the foundation pit 13, set a crane 3 at the top of the frame body 2, connect the top of the crane 3 to the top of a pallet 5 through a rope 4, symmetrically set hydraulic cylinders 6 at the top of the frame body 2, connect the output ends of the hydraulic cylinders 6 to the top of a formwork 7 through long rods, the two formworks 7 are symmetrically distributed left and right, symmetrically set blocks 8 on the sides of the formwork 7, install rotating wheels 9 inside the blocks 8, then set a plurality of vibrators 10 on the sides of the formwork 7, then set a plurality of annular bodies 11 on the sides of the formwork 7, a vibrating rod 12 is installed through the inside of the annular body 11, both ends of the vibrating rod 12 penetrate through both sides of the formwork 7 respectively, bolts are set through the top of the annular body 11 to squeeze and fix the vibrating rod 12;

[0039] b: First, lower the formwork 7 so that the side of the formwork 7 contacts the side of the pallet 5, then place the steel reinforcement cage above the pallet 5, and the steel reinforcement cage is located inside the left and right formworks 7, then pour concrete into the space formed by the pallet 5 and the two formworks 7, so that the concrete wraps the steel reinforcement cage, thereby forming a wall;

[0040] c: When the height of the concrete is flush with the height of the formwork 7, stop pouring the concrete, then pull the vibrating rod 12 outward so that the vibrating rod 12 no longer inserts into the concrete. After 12 hours, the hydraulic cylinder 6 drives the formwork 7 to move upward, separating the formwork 7 from the concrete, and at the same time, the rotating wheel 9 flattens the rough places on both sides of the concrete;

[0041] d: Then the pallet 5 moves downward into the foundation pit 13, then the formwork 7 moves downward again, and the bottom of the formwork 7 is 10 - 15 cm higher than the top of the concrete on the pallet 5, then continue to place the steel reinforcement cage above the concrete, and repeat the concrete pouring and vibrating of the concrete until the pallet 5 touches the bottom of the foundation pit 13.

[0042] In step a, the following steps are further included: sleeving a plurality of limiting frames 14 on the tops of the left and right formworks 7.

[0043] In step b, the following steps are further included: before pouring the concrete, insert pipes and frame doors in the left - right direction in the steel reinforcement cage, thereby forming a door opening so that the poured concrete leaves a door opening.

[0044] In step b, the following steps are further included: before pouring the concrete onto the pallet 5, move the vibrating rod 12 inward to contact the steel reinforcement cage, at the same time, the vibrator 10 vibrates to drive the formwork 7 to vibrate, and at the same time, the formwork 7 vibrates to drive the vibrating rod 12 to vibrate, and the vibration of the vibrating rod 12 causes the steel reinforcement cage to vibrate, thereby making the concrete vibrate and flow more easily to fill the gap between the two formworks 7.

[0045] In step c, the following steps are further included: during the upward movement of the formwork 7, the staff adds concrete to repair the cracked and defective parts on the outer side of the concrete on the pallet 5.

[0046] In step d, the following steps are further included: when the pallet 5 moves downward, waterproof mortar is sprayed on the outer side of the concrete.

[0047] The height of the formwork 7 is 1 meter.

[0048] The planes where the inner sides of the left and right formworks 7 are located are respectively tangent to the curved surfaces of the left and right rotating wheels 9.

[0049] The distance between the axes of two adjacent vibrating rods 12 at the front and back and at the same height is 50 cm.

[0050] Both the pallet 5 and the formwork 7 are made of stainless steel plates.

[0051] Embodiment 2: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a construction method for a steel structure underground wall with a reserved installation door opening;

[0052] Step 1: Excavate a foundation pit 13 on the ground 1, erect a frame 2 above the foundation pit 13, install a crane 3 at the top of the frame 2, connect the top of the crane 3 to the top of the pallet 5 through a rope 4, symmetrically arrange hydraulic cylinders 6 at the top of the frame 2, connect the output ends of the hydraulic cylinders 6 to the top of the formwork 7 through long rods, the two formworks 7 are symmetrically distributed left and right, symmetrically arrange blocks 8 on the sides of the formwork 7, install rotating wheels 9 inside the blocks 8, then arrange a plurality of vibrators 10 on the sides of the formwork 7, then arrange a plurality of rings 11 on the sides of the formwork 7, the vibrating rods 12 are installed through the inside of the rings 11, both ends of the vibrating rods 12 respectively penetrate through both sides of the formwork 7, bolts are arranged through the tops of the rings 11 to squeeze and fix the vibrating rods 12, and then a plurality of limit frames 14 are sleeved on the tops of the left and right formworks 7;

[0053] Step 2: First, lower the formwork 7 so that the side of the formwork 7 contacts the side of the pallet 5, then place the steel reinforcement cage above the pallet 5, and the steel reinforcement cage is located inside the left and right formworks 7, insert pipes and frame doors in the left - right direction in the steel reinforcement cage to form a door opening, then move the vibrating rods 12 inward to contact the steel reinforcement cage, and then pour concrete into the space formed by the pallet 5 and the two formworks 7, so that the concrete wraps the steel reinforcement cage. At the same time, the vibrators 10 vibrate to drive the formwork 7 to vibrate, and at the same time, the formwork 7 vibrates to drive the vibrating rods 12 to vibrate, and the vibration of the vibrating rods 12 causes the steel reinforcement cage to vibrate, so that the concrete is more easily vibrated and flows to fill the gap between the two formworks 7;

[0054] Step 3: When the height of the concrete is flush with the height of the formwork 7, stop pouring the concrete. Then, pull the vibrating rod 12 outward so that the vibrating rod 12 is no longer inserted into the concrete. After 12 hours, the hydraulic cylinder 6 drives the formwork 7 to move upward, separating the formwork 7 from the concrete. At the same time, the rotating wheels 9 flatten the rough parts on both sides of the concrete. During the upward movement of the formwork 7, the staff adds concrete to repair the cracks and defects on the outer side of the concrete on the supporting plate 5;

[0055] Step 4: Then, the supporting plate 5 moves downward into the foundation pit 13. When the supporting plate 5 moves downward, waterproof mortar is sprayed on the outer side of the concrete. Subsequently, the formwork 7 moves downward again, and the bottom of the formwork 7 is 10 cm higher than the top of the concrete on the supporting plate 5. Then, a steel reinforcement cage is placed above the concrete again, and the concrete pouring and vibration of the concrete are repeated until the supporting plate 5 touches the bottom of the foundation pit 13.

[0056] Example 3: Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a construction method for a steel structure underground wall with a reserved installation door opening;

[0057] Step 1: Excavate a foundation pit 13 on the ground 1. Erect a frame 2 above the foundation pit 13. Install a crane 3 at the top of the frame 2. The crane 3 is connected to the top of the supporting plate 5 through a rope 4. Hydraulic cylinders 6 are symmetrically arranged at the top of the frame 2. The output ends of the hydraulic cylinders 6 are connected to the top of the formwork 7 through long rods. The two formworks 7 are symmetrically distributed left and right. Blocks 8 are symmetrically arranged on the sides of the formwork 7. The rotating wheels 9 are installed inside the blocks 8. Then, a plurality of limiting frames 14 are sleeved on the tops of the left and right formworks 7;

[0058] Step 2: First, move the formwork 7 downward so that the side of the formwork 7 touches the side of the supporting plate 5. Then, place the steel reinforcement cage above the supporting plate 5, and the steel reinforcement cage is located inside the left and right formworks 7. Insert pipes and frame doors in the left - right direction in the steel reinforcement cage to form a door opening. Subsequently, move the vibrating rod 12 inward to contact the steel reinforcement cage, and then pour the concrete into the space formed by the combination of the supporting plate 5 and the two formworks 7, so that the concrete wraps the steel reinforcement cage;

[0059] Step 3: When the height of the concrete is flush with the height of the formwork 7, stop pouring the concrete. Then, pull the vibrating rod 12 outward so that the vibrating rod 12 is no longer inserted into the concrete. After 12 hours, the hydraulic cylinder 6 drives the formwork 7 to move upward, separating the formwork 7 from the concrete. At the same time, the rotating wheels 9 flatten the rough parts on both sides of the concrete. During the upward movement of the formwork 7, the staff adds concrete to repair the cracks and defects on the outer side of the concrete on the supporting plate 5;

[0060] Step 4: Then, the pallet 5 moves downward into the foundation pit 13. When the pallet 5 moves downward, waterproof mortar is sprayed on the outer side of the concrete. Subsequently, the formwork 7 moves downward again, and the bottom of the formwork 7 is 10 cm higher than the top of the concrete on the pallet 5. Then, the steel reinforcement cage is continuously placed above the concrete, and the concrete pouring and vibration of the concrete are repeated until the pallet 5 touches the bottom of the foundation pit 13.

[0061] Example 4: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a construction method for a steel structure underground wall with a reserved installation door opening;

[0062] Step 1: Dig a foundation pit 13 on the ground 1. Erect a frame 2 above the foundation pit 13. Set a crane 3 at the top of the frame 2. The crane 3 is connected to the top of the pallet 5 through a rope 4. Hydraulic cylinders 6 are symmetrically arranged at the top of the frame 2. The output end of the hydraulic cylinder 6 is connected to the top of the formwork 7 through a long rod. The two formworks 7 are symmetrically distributed left and right. Then, a plurality of vibrators 10 are arranged on the side of the formwork 7. Next, a plurality of annular bodies 11 are arranged on the side of the formwork 7. A vibration rod 12 is installed through the inside of the annular body 11. Both ends of the vibration rod 12 penetrate through both sides of the formwork 7. A bolt is penetrated through the top of the annular body 11 to squeeze and fix the vibration rod 12. Then, a plurality of limiting frames 14 are sleeved on the tops of the left and right formworks 7.

[0063] Step 2: First, move the formwork 7 downward so that the side of the formwork 7 touches the side of the pallet 5. Then, place the steel reinforcement cage above the pallet 5, and the steel reinforcement cage is located inside the left and right formworks 7. Insert pipes and frame doors in the left-right direction in the steel reinforcement cage to form a door opening. Subsequently, move the vibration rod 12 inward to contact the steel reinforcement cage, and then pour the concrete into the space formed by the pallet 5 and the two formworks 7, so that the concrete wraps the steel reinforcement cage. At the same time, the vibrator 10 vibrates to drive the formwork 7 to vibrate, and at the same time, the formwork 7 vibrates to drive the vibration rod 12 to vibrate. The vibration of the vibration rod 12 causes the steel reinforcement cage to vibrate, thereby making the concrete vibrate and flow more easily to fill the gap between the two formworks 7.

[0064] Step 3: When the height of the concrete is flush with the height of the formwork 7, stop pouring the concrete. Then, pull the vibration rod 12 outward so that the vibration rod 12 is no longer inserted into the concrete. After 12 hours, the hydraulic cylinder 6 drives the formwork 7 to move upward to separate the formwork 7 from the concrete.

[0065] Step 4: Then the pallet 5 moves downward into the foundation pit 13. When the pallet 5 moves downward, waterproof mortar is sprayed on the outer side of the concrete. Subsequently, the formwork 7 moves downward again, and the bottom of the formwork 7 is 10 cm higher than the top of the concrete on the pallet 5. Then, the steel reinforcement cage is continuously placed above the concrete, and the concrete pouring and vibration of the concrete are repeated until the pallet 5 touches the bottom of the foundation pit 13.

[0066] Example 5: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a construction method for a steel structure underground wall with a reserved installation door opening;

[0067] Step 1: Excavate the foundation pit 13 on the ground 1. Erect the frame 2 above the foundation pit 13. Set the crane 3 at the top of the frame 2. The crane 3 is connected to the top of the pallet 5 through the rope 4. The hydraulic cylinders 6 are symmetrically arranged at the top of the frame 2. The output ends of the hydraulic cylinders 6 are connected to the top of the formwork 7 through the long rods. The two formworks 7 are symmetrically distributed left and right. The blocks 8 are symmetrically arranged on the side surfaces of the formwork 7. Install the rotating wheels 9 inside the blocks 8. Then, arrange a plurality of vibrators 10 on the side surfaces of the formwork 7. Next, arrange a plurality of annular bodies 11 on the side surfaces of the formwork 7. The vibrating rods 12 are installed through the inner sides of the annular bodies 11. The two ends of the vibrating rods 12 respectively penetrate through the two sides of the formwork 7. Bolts are arranged through the tops of the annular bodies 11 to squeeze and fix the vibrating rods 12. Then, put a plurality of limiting frames 14 on the tops of the two formworks 7 on the left and right.

[0068] Step 2: First, move the formwork 7 downward so that the side surface of the formwork 7 touches the side surface of the pallet 5. Then, place the steel reinforcement cage above the pallet 5, and the steel reinforcement cage is located inside the two formworks 7 on the left and right. Insert pipes and frame doors in the left - right direction in the steel reinforcement cage to form a door opening. Subsequently, move the vibrating rods 12 inward to contact the steel reinforcement cage. Then, pour the concrete into the space formed by the pallet 5 and the two formworks 7, so that the concrete wraps the steel reinforcement cage. At the same time, the vibrator 10 vibrates to drive the formwork 7 to vibrate, and the formwork 7 vibrates to drive the vibrating rods 12 to vibrate. The vibrating rods 12 vibrate to cause the steel reinforcement cage to vibrate, thereby making the concrete vibrate and flow more easily to fill the gap between the two formworks 7.

[0069] Step 3: When the height of the concrete is flush with the height of the formwork 7, stop pouring the concrete. Then, pull the vibrating rods 12 outward so that the vibrating rods 12 are no longer inserted into the concrete. After 12 hours, the hydraulic cylinder 6 drives the formwork 7 to move upward, separating the formwork 7 from the concrete. At the same time, the rotating wheels 9 flatten the rough parts on both sides of the concrete. During the upward movement of the formwork 7, the staff repairs the cracks and defects on the outer side of the concrete on the pallet 5 by adding concrete.

[0070] Step 4: Then the pallet 5 moves downward into the foundation pit 13. Subsequently, the formwork 7 moves downward again, and the bottom of the formwork 7 is 10 cm higher than the top of the concrete on the pallet 5. Then, the steel reinforcement cage is continuously placed above the concrete, and the concrete pouring and vibration of the concrete are repeated until the pallet 5 touches the bottom of the foundation pit 13.

[0071] Example 6: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a construction method for a steel structure underground wall with a reserved installation door opening;

[0072] Step 1: Excavate the foundation pit 13 on the ground 1, erect the framework 2 above the foundation pit 13, set the crane 3 at the top of the framework 2, connect the top of the pallet 5 with the crane 3 through the rope 4, symmetrically set the hydraulic cylinders 6 at the top of the framework 2, connect the output end of the hydraulic cylinder 6 with the top of the formwork 7 through the long rod, the two formworks 7 are symmetrically distributed left and right, symmetrically set the blocks 8 on the side of the formwork 7, install the rotating wheels 9 inside the blocks 8, then set a plurality of vibrators 10 on the side of the formwork 7, and then put a plurality of limit frames 14 on the tops of the left and right formworks 7.

[0073] Step 2: First, move the formwork 7 downward so that the side of the formwork 7 touches the side of the pallet 5. Then, place the steel reinforcement cage above the pallet 5, and the steel reinforcement cage is located inside the left and right formworks 7. Insert the pipes and the frame door in the left - right direction in the steel reinforcement cage to form a door opening. Subsequently, move the vibrating rod 12 inward to contact the steel reinforcement cage, and then pour the concrete into the space formed by the pallet 5 and the two formworks 7, so that the concrete wraps the steel reinforcement cage. At the same time, the vibrator 10 vibrates to drive the formwork 7 to vibrate, so that the concrete is vibrated and flows more easily to fill the gap between the two formworks 7.

[0074] Step 3: When the height of the concrete is flush with the height of the formwork 7, stop pouring the concrete. After 12 hours, the hydraulic cylinder 6 drives the formwork 7 to move upward, separating the formwork 7 from the concrete. At the same time, the rotating wheel 9 flattens the rough parts on both sides of the concrete. During the upward movement of the formwork 7, the staff repairs the cracks and defects on the outside of the concrete on the pallet 5 by adding concrete.

[0075] Step 4: Then the pallet 5 moves downward into the foundation pit 13. When the pallet 5 moves downward, waterproof mortar is sprayed on the outside of the concrete. Subsequently, the formwork 7 moves downward again, and the bottom of the formwork 7 is 10 cm higher than the top of the concrete on the pallet 5. Then, continue to place the steel reinforcement cage above the concrete, and repeat the concrete pouring and vibration of the concrete until the pallet 5 touches the bottom of the foundation pit 13.

[0076] Example 7: Please refer to Figure 1 ,Figure 2 , Figure 3 and Figure 4 , a construction method for a steel structure underground wall with a reserved installation door opening;

[0077] Step 1: Excavate a foundation pit 13 on the ground 1, erect a frame 2 above the foundation pit 13, set a crane 3 at the top of the frame 2, connect the top of the crane 3 to the top of a pallet 5 through a rope 4, symmetrically set hydraulic cylinders 6 at the top of the frame 2, connect the output ends of the hydraulic cylinders 6 to the top of a formwork 7 through long rods, the two formworks 7 are symmetrically distributed left and right, and then put a plurality of limiting frames 14 on the tops of the left and right formworks 7;

[0078] Step 2: First, lower the formwork 7 so that the side surface of the formwork 7 contacts the side surface of the pallet 5, then place the steel reinforcement cage above the pallet 5, and the steel reinforcement cage is located inside the left and right formworks 7. Insert pipes and a frame door in the left - right direction in the steel reinforcement cage to form a door opening, and then pour concrete into the space formed by the pallet 5 and the two formworks 7 so that the concrete wraps the steel reinforcement cage;

[0079] Step 3: When the height of the concrete is flush with the height of the formwork 7, stop pouring concrete. After 12 hours, the hydraulic cylinder 6 drives the formwork 7 to move upward to separate the formwork 7 from the concrete;

[0080] Step 4: Then lower the pallet 5 into the foundation pit 13. Subsequently, lower the formwork 7 again, and make the bottom of the formwork 7 10 cm higher than the top of the concrete on the pallet 5. Then continue to place the steel reinforcement cage above the concrete, and repeat the concrete pouring and vibration of the concrete until the pallet 5 touches the bottom of the foundation pit 13.

[0081] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A construction method for a steel structure underground wall with a reserved installation door opening, characterized in that: The construction method of the steel structure underground wall with a reserved installation door opening includes the following steps: a: Dig a foundation pit (13) on the ground (1), erect a frame body (2) above the foundation pit (13), set a crane (3) at the top of the frame body (2), connect the top of the crane (3) to the top of a pallet (5) through a rope (4), symmetrically set hydraulic cylinders (6) at the top of the frame body (2), connect the output end of the hydraulic cylinder (6) to the top of a formwork (7) through a long rod, the two formworks (7) are symmetrically distributed left and right, symmetrically set blocks (8) on the side surface of the formwork (7), install a rotating wheel (9) inside the block (8), then set a plurality of vibrators (10) on the side surface of the formwork (7), then set a plurality of annular bodies (11) on the side surface of the formwork (7), a vibrating rod (12) is installed through the inside of the annular body (11), both ends of the vibrating rod (12) penetrate through both sides of the formwork (7), and bolts are penetrated through the top of the annular body (11) to squeeze and fix the vibrating rod (12); b: First, lower the formwork (7) so that the side surface of the formwork (7) contacts the side surface of the pallet (5), then place the steel reinforcement cage above the pallet (5), and the steel reinforcement cage is located inside the left and right formworks (7), and then pour concrete into the space formed by the combination of the pallet (5) and the two formworks (7) so that the concrete wraps the steel reinforcement cage to form a wall; In step b, the following steps are also included: Before pouring concrete onto the pallet (5), move the vibrating rod (12) inward to contact the steel reinforcement cage, and at the same time, the vibrator (10) vibrates to drive the formwork (7) to vibrate, and at the same time, the formwork (7) vibrates to drive the vibrating rod (12) to vibrate, and the vibrating rod (12) vibrates to cause the steel reinforcement cage to vibrate, so that the concrete is vibrated and more easily flows to fill the gap between the two formworks (7); c: When the height of the concrete is flush with the height of the formwork (7), stop pouring concrete, then pull the vibrating rod (12) outward so that the vibrating rod (12) no longer inserts into the concrete. After 12 hours, the hydraulic cylinder (6) drives the formwork (7) to move upward to separate the formwork (7) from the concrete, and at the same time, the rotating wheel (9) flattens the rough places on both sides of the concrete; d: Then the pallet (5) moves downward into the foundation pit (13), and then the formwork (7) moves downward again, and the bottom of the formwork (7) is 10 - 15 cm higher than the top of the concrete on the pallet (5), and then continue to place the steel reinforcement cage above the concrete, and repeat the concrete pouring and the vibration of the concrete until the pallet (5) touches the bottom of the foundation pit (13).

2. The construction method of a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: In step a, the following steps are also included: Set a plurality of limit frames (14) on the tops of the left and right formworks (7).

3. A construction method for a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: In step b, the following steps are also included: Before pouring concrete, insert pipes and frame doors in the left - right direction in the steel reinforcement cage to form a door opening so that the poured concrete leaves a door opening.

4. A construction method for a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: In step c, the following steps are also included: During the upward movement of the formwork (7), the staff adds concrete to repair the cracks and defects on the outside of the concrete on the pallet (5).

5. A construction method for a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: In the step d, the following steps are further included: when the pallet (5) moves downward, waterproof mortar is sprayed on the outer side of the concrete.

6. A construction method for a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: The height of the formwork (7) is 1 meter.

7. A construction method for a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: The planes where the inner side surfaces of the left and right formworks (7) are located are respectively tangent to the curved surfaces of the left and right rotating wheels (9).

8. A construction method for a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: The distance between the axes of two adjacent vibration rods (12) in the front and rear and at the same height is 50 cm.

9. A construction method for a steel structure underground wall with a reserved installation door opening according to claim 1, characterized in that: Both the pallet (5) and the formwork (7) are made of stainless steel plates.

Images