Grooving construction structure of lattice-shaped underground diaphragm wall

Abstract

The utility model relates to the technical field of lattice-shaped underground diaphragm walls, and discloses a lattice-shaped underground diaphragm wall grooving construction structure which comprises a first slope body and a second slope body, the first slope body is connected with the second slope body, the height of the first slope body is obviously higher than that of the second slope body, a lattice-shaped groove is formed in the first slope body, a guide wall is poured in the lattice-shaped groove, and the guide wall is connected with the first slope body. A plurality of T-shaped grooves and a plurality of straight-line-shaped grooves are formed in the first slope body, the T-shaped grooves are divided into two groups which are opposite in pairs, the two groups of T-shaped grooves are connected through the straight-line-shaped grooves, lattice-shaped grooves are formed in the first slope body, and then guide walls are poured in the lattice-shaped grooves, so that soil on the first slope body and soil on the second slope body are supported and prevented from collapsing; the T-shaped groove and the straight-line-shaped groove are formed in the first slope body, so that a frame of the continuous wall is formed, then the T-shaped wall and the straight-line-shaped wall are poured, a soil body in the continuous wall forms a semi-gravity overall structure, and therefore a rigid structure is formed to replace a pile foundation, an open caisson or a caisson foundation, and larger loads are borne.

Description

Technical Field

[0001] The utility model patent relates to the technical field of grid-shaped underground continuous walls, and specifically, to a grid-shaped underground continuous wall trenching construction structure. Background Art

[0002] A continuous wall is a continuous wall constructed by using drilling equipment to form a groove section. It has high structural rigidity and can play a good supporting role. It is suitable for various geological conditions and can be used as part of the main body of an underground building. It saves project costs, simplifies construction procedures, has diverse functions, and has low construction pollution.

[0003] At present, when there is a large height difference between the construction site and the road, it is difficult to implement various support forms such as internal support and suspended support during design, and only vertical support can be chosen. However, among the conventional vertical support methods, cantilever piles and double-row piles cannot meet the deformation control requirements. Utility Model Content

[0004] The utility model aims to provide a bracket hopper for self-unloading fillers, aiming to solve the problem in the prior art that cantilever piles and double-row piles cannot meet the deformation control requirements.

[0005] The utility model is implemented in this way: a grid-shaped underground continuous wall trench construction structure comprises a first slope body and a second slope body, wherein the first slope body and the second slope body are connected, and the height of the first slope body is significantly higher than that of the second slope body, a grid-shaped groove is provided on the first slope body, a guide wall is cast in the grid-shaped groove, a plurality of T-shaped grooves and a plurality of straight grooves are provided on the first slope body, the T-shaped grooves are divided into two groups opposite to each other, the two groups of T-shaped grooves are connected by a straight groove, and T-shaped walls and straight walls are cast in the T-shaped grooves and the straight grooves respectively, the T-shaped walls and the straight walls are matched with the T-shaped grooves and the straight grooves respectively, and a top plate is cast on the guide wall, the T-shaped wall and the straight wall.

[0006] Preferably, the grid-shaped trench has a depth of 1.8 m and a thickness of 300 mm, and the grid-shaped trench adopts a multi-segment integral excavation and continuous construction method.

[0007] Preferably, steel bars are tied in the grid-shaped grooves, and bidirectional steel bars are arranged on the construction surface between the steel bars. C30 concrete is poured on the steel bars, poured in layers, and vibrated synchronously, thereby forming a guide wall.

[0008] Preferably, before the guide wall is cast, formwork is movably installed on both sides of the steel bars constituting the guide wall.

[0009] Preferably, after the guide wall is formed, the template is removed and a support plate is longitudinally arranged on the wall surfaces of the guide wall that are close to each other.

[0010] Preferably, the T-slots and the slots are opened in a continuous wall slot-hopping construction sequence. For a complete unit slot section, two symmetrical T-slots are opened first, and then a slot is opened between the two T-slots. Then, T-slots are opened at both ends of the opened T-slots, and the slot-hopping section construction is repeated in this way.

[0011] Preferably, the T-slots and the slots are first opened by using a rotary drilling rig to drill holes in the slot section to a designed depth. After the holes are drilled, double-wheel milling is used to protect the mud wall and synchronously reverse circulate the slag to form a slot.

[0012] Preferably, during the double-wheel milling process of the T-slot and the slotted groove, the two milling wheels rotate at a low speed in opposite directions, the milling teeth mill and crush the surrounding rock of the stratum, and the middle hydraulic motor drives the mud pump to suck the drilled rock slag and mud mixture through the sand suction port in the middle of the milling wheel to the ground mud station for sand removal, and then the purified mud is injected into the inner wall of the groove section, and this cycle is repeated until the final hole is grooved.

[0013] Preferably, a steel cage is placed in the straight groove, and concrete is poured in the steel cage. Two sets of pouring conduits are used during the pouring of the concrete, which are evenly distributed along the length direction, thereby forming a straight wall.

[0014] Preferably, a crown beam is cast on the guide wall, the crown beam is 0.8m high and has the same width as the guide wall, and reinforced concrete connecting plates are arranged between the crown beams, and the thickness of the connecting plates is the same as that of the crown beams.

[0015] Compared with the prior art, the grid-shaped underground continuous wall trench construction structure provided by the utility model supports the soil on the first slope and the second slope by opening a grid-shaped trench on the first slope and then casting a guide wall in the grid-shaped trench to prevent soil collapse; a frame of a continuous wall is formed by opening a T-shaped trench and a straight groove on the first slope, and then the T-shaped wall and the straight wall are cast, so that the soil in the continuous wall forms a semi-gravity integral structure, thereby forming a rigid structure, replacing pile foundations, caissons or caisson foundations, and bearing greater loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the first slope and the second slope structure of the grid-shaped underground continuous wall trench construction structure provided by the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of a grid-shaped underground continuous wall trenching construction structure provided by the utility model;

[0018] Figure 3 It is an enlarged structural schematic diagram of point A of the grid-shaped underground continuous wall trench construction structure provided by the utility model.

[0019] Description of reference numerals:

[0020] 1. The first slope; 2. The second slope; 3. Grid groove; 4. Guide wall; 5. T-shaped groove; 6. Straight groove; 7. T-shaped wall; 8. Straight wall; 9. Top plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0023] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] Reference Figure 1-3 As shown, it is a preferred embodiment provided by the utility model.

[0025] A grid-shaped underground continuous wall trench construction structure comprises a first slope body 1 and a second slope body 2, wherein the first slope body 1 and the second slope body 2 are connected, and the height of the first slope body 1 is significantly higher than that of the second slope body 2, a grid-shaped groove 3 is provided on the first slope body 1, and a guide wall 4 is cast in the grid-shaped groove 3, a plurality of T-shaped grooves 5 and a plurality of straight grooves 6 are provided on the first slope body 1, the T-shaped grooves 5 are divided into two groups opposite to each other, the two groups of T-shaped grooves 5 are connected by a straight groove 6, and T-shaped walls 7 and straight walls 8 are cast in the T-shaped grooves 5 and the straight grooves 6, respectively, and the T-shaped walls 7 and the straight walls 8 are respectively matched with the T-shaped grooves 5 and the straight grooves 6, and a top plate 9 is cast on the guide wall 4, the T-shaped wall 7 and the straight wall 8.

[0026] By opening a lattice groove 3 on the first slope body 1 and then casting a guide wall 4 in the lattice groove 3, the soil on the first slope body 1 and the second slope body 2 is supported to prevent soil collapse; by opening a T-shaped groove 5 and a straight groove 6 on the first slope body 1, a continuous wall frame is formed, and then a T-shaped wall 7 and a straight wall 8 are cast, so that the soil in the continuous wall forms a semi-gravity integral structure, thereby forming a rigid structure, replacing a pile foundation, a caisson or a caisson foundation, and bearing a greater load.

[0027] Specifically, in this embodiment, the depth of the grid-shaped trench 3 is 1.8 m and the thickness is 300 mm, and the grid-shaped trench 3 is excavated in an integral manner with multiple trench sections and a continuous construction method.

[0028] By excavating the grid groove 3 in multiple sections as a whole and constructing the grid groove continuously, concrete can be quickly poured into the groove section after excavation, so that the guide wall 4 of the groove section can be quickly formed, thus avoiding the long-term excavation of the grid groove 3 and causing ground collapse.

[0029] Specifically, in this embodiment, steel bars are tied in the lattice grooves 3, and bidirectional steel bars are arranged on the construction surface between the steel bars. At the same time, C30 concrete is poured on the steel bars, poured in layers, and vibrated synchronously, thereby forming the guide wall 4.

[0030] By tying steel bars in the lattice groove 3 and then pouring concrete into the lattice groove 3, the cast guide wall 4 is made stronger.

[0031] Specifically, in this embodiment, before the guide wall 4 is cast, templates are movably installed on both sides of the steel bars constituting the guide wall 4.

[0032] By movably installing the formwork on both sides of the steel bars, when pouring concrete on the steel bars, the concrete is confined within the formwork, thereby facilitating the formation of the guide wall 4.

[0033] Specifically, in this embodiment, after the guide wall 4 is formed, the template is removed, and support plates are longitudinally arranged on the wall surfaces of the guide wall 4 that are close to each other.

[0034] The guide walls 4 on both sides are supported by the support plates, thereby preventing the guide walls 4 from tilting when the concrete strength on the guide walls 4 does not reach the designed strength.

[0035] Specifically, in the present embodiment, the T-slots 5 and the slots 6 are opened in a continuous wall slot-hopping construction sequence. For a complete unit slot section, two mutually symmetrical T-slots 5 are opened first, and then a slot 6 is opened between the two T-slots 5. Then, T-slots 5 are opened at both ends of the opened T-slots 5, and the slot-hopping section construction is repeated in this way.

[0036] By skipping the trench section, the adjacent trench section will be constructed after the newly constructed concrete wall reaches a certain strength, thereby minimizing the disturbance of the surrounding soil and trench section concrete; at the same time, it is convenient for multiple machines to construct at the same time to speed up the construction progress.

[0037] Specifically, in this embodiment, the T-slots 5 and the slots 6 are first opened by using a rotary drilling rig to drill holes in the slot section to a designed depth. After the holes are drilled, double-wheel milling is used to protect the mud wall and synchronously reverse circulate the slag to form a slot.

[0038] By using rotary drilling and double-wheel milling grooving technology simultaneously, after the rotary drilling rig determines the depth of the T-slot 5 and the slot 6, the double-wheel milling machine cuts and crushes the slot section strata in sequence, thereby improving the excavation efficiency of the T-slot 5 and the slot 6.

[0039] Specifically, in this embodiment, during the double-wheel milling grooving construction process, the two milling wheels rotate at low speeds in opposite directions, the milling teeth mill and crush the surrounding rock of the stratum, and the middle hydraulic motor drives the mud pump to suck the drilled rock slag and mud mixture through the sand suction port in the middle of the milling wheel to the ground mud station for sand removal, and then the purified mud is injected into the inner wall of the groove section, and this cycle is repeated until the final hole is grooved.

[0040] By using this construction method, the vibration generated during on-site operations is weak, the disturbance to the stratum is small, the noise is low, and the impact on the surrounding environment is slight, ensuring the safety and reliability of buildings around the slope.

[0041] Specifically, in this embodiment, a steel cage is placed in the straight groove 6, and concrete is poured in the steel cage. Two sets of pouring conduits are used during the pouring of the concrete, which are evenly distributed along the length direction, thereby forming a straight wall 8.

[0042] The simultaneous pouring through two sets of pouring conduits helps to increase the pouring speed of the straight wall 8 and makes the concrete on the straight wall 8 more uniform during pouring.

[0043] Specifically, in this embodiment, a crown beam is cast on the guide wall 4, the crown beam is 0.8m high and has the same width as the guide wall 4, and a reinforced concrete connecting plate is arranged between the crown beams, and the thickness of the connecting plate is the same as that of the crown beam.

[0044] Since the thickness of the connecting plate is the same as that of the crown beam, a flat top plate 9 can be formed between the connecting plate and the crown beam, thereby facilitating the subsequent engineering construction.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grid-shaped underground continuous wall trench construction structure, comprising a first slope body and a second slope body, characterized in that: The first slope body is connected to the second slope body, and the height of the first slope body is significantly higher than that of the second slope body. The first slope body is provided with a grid groove, and a guide wall is cast in the grid groove. The first slope body is provided with a plurality of T-slots and a plurality of straight grooves, and the T-slots are divided into two groups opposite to each other, and the two groups of T-slots are connected by a straight groove, and T-walls and straight walls are cast in the T-slots and the straight grooves respectively, and the T-walls and the straight walls are respectively adapted to the T-slots and the straight grooves, and top plates are cast on the guide walls, the T-walls and the straight walls.

2. The grid-shaped underground continuous wall trenching construction structure according to claim 1, characterized in that: The grid trench has a depth of 1.8m and a thickness of 300mm, and the grid trench is excavated in an integral manner with multiple trench sections and constructed continuously.

3. The grid-shaped underground continuous wall trenching construction structure according to claim 1, characterized in that: Steel bars are tied in the lattice grooves, and bidirectional steel bars are arranged on the construction surface between the steel bars. C30 concrete is poured on the steel bars at the same time, poured in layers and vibrated synchronously, thereby forming a guide wall.

4. The grid-shaped underground continuous wall trenching construction structure according to claim 1, characterized in that: A steel cage is placed in the straight groove, and concrete is poured in the steel cage. Two sets of pouring conduits are used during the pouring of the concrete, and the concrete is evenly distributed along the length direction, thereby forming a straight wall.

5. The grid-shaped underground continuous wall trenching construction structure according to claim 1, characterized in that: A crown beam is cast on the guide wall. The crown beam is 0.8m high and has the same width as the guide wall. Reinforced concrete connecting plates are arranged between the crown beams, and the thickness of the connecting plates is the same as that of the crown beams.

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