CN116464086B - Building foundation pit construction equipment and building foundation pit construction method - Google Patents
Building foundation pit construction equipment and building foundation pit construction method Download PDFInfo
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- CN116464086B CN116464086B CN202310723551.XA CN202310723551A CN116464086B CN 116464086 B CN116464086 B CN 116464086B CN 202310723551 A CN202310723551 A CN 202310723551A CN 116464086 B CN116464086 B CN 116464086B
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- foundation pit
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- waterproof
- pipeline
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000002689 soil Substances 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 17
- 238000007710 freezing Methods 0.000 claims abstract description 7
- 230000008014 freezing Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 57
- 239000012530 fluid Substances 0.000 claims description 45
- 238000004873 anchoring Methods 0.000 claims description 37
- 229910001220 stainless steel Inorganic materials 0.000 claims description 31
- 239000010935 stainless steel Substances 0.000 claims description 31
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000004078 waterproofing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 claims description 2
- 239000011440 grout Substances 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 10
- 101150054854 POU1F1 gene Proteins 0.000 description 25
- 239000002002 slurry Substances 0.000 description 11
- 238000005457 optimization Methods 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/14—Restraining of underground water by damming or interrupting the passage of underground water by freezing the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Building Environments (AREA)
Abstract
The application relates to building foundation pit construction equipment and a building foundation pit construction method. The construction equipment for the building foundation pit belongs to the technical field of construction of the building foundation pit; the construction equipment for the building foundation pit comprises a foundation pit, wherein waterproof plates are paved on the inner wall of the foundation pit, a partition plate is fixedly arranged in the waterproof plates, the partition plate partitions the inside of the waterproof plates into a first cavity and a second cavity which are distributed up and down, a first pipeline and a second pipeline are arranged on two sides of each waterproof plate, the first pipeline and the second pipeline are distributed up and down, the first pipeline is communicated with the first cavity, the second pipeline is communicated with the second cavity, a plurality of waterproof plates are paved on the inner wall of the foundation pit at equal intervals, and connecting pipes are arranged between two adjacent waterproof plates; according to the application, the freezing liquid flowing circularly is utilized to freeze the foundation pit to form the frozen soil layer, so that the water seepage phenomenon is avoided, the water is not required to be drained by a water suction pump, the construction cost is saved, and the influence of water seepage on the foundation pit is avoided.
Description
Technical Field
The application belongs to the technical field of building foundation pit construction, and particularly relates to building foundation pit construction equipment and a building foundation pit construction method.
Background
When the building foundation pit is excavated, the inner wall or the bottom of the building foundation pit is easy to encounter a groundwater layer, the water seepage phenomenon occurs on the inner wall of the building foundation pit, the problem that seepage is usually carried out on the inner wall of the building foundation pit after seepage water is extracted, an anchor net is erected, pouring is carried out on the inner wall of the building foundation pit again for waterproofing is solved in the prior art, but the amount of water required to be extracted is large when the seepage water amount is large, and the cost of building foundation pit construction is increased no matter the problem of water emission or the problem of energy waste is solved.
Therefore, a construction equipment and a construction method for a building foundation pit are provided for solving the above drawbacks.
Disclosure of Invention
The application aims to solve the problems and provide the building foundation pit construction equipment which is simple in structure and reasonable in design.
The application realizes the above purpose through the following technical scheme:
the construction equipment for the building foundation pit comprises a foundation pit, wherein a waterproof plate is paved on the inner wall of the foundation pit, a partition plate is fixedly arranged in the waterproof plate, the partition plate partitions the inside of the waterproof plate into a first cavity and a second cavity which are distributed up and down, two sides of the waterproof plate are respectively provided with a first pipeline and a second pipeline, the first pipelines are vertically distributed, the first pipelines are communicated with the first cavity, the second pipelines are communicated with the second cavity, the waterproof plate is provided with a plurality of waterproof plates which are equidistantly paved on the inner wall of the foundation pit, a connecting pipe is arranged between two adjacent waterproof plates, the connecting pipe is communicated between two corresponding first pipelines or two corresponding second pipelines, a rotating ring is rotationally arranged at the outer ring of the middle section of the connecting pipe, a magnetic absorbing block is fixedly arranged on the rotating ring, the two ends of the connecting pipe are connected on the corresponding first pipeline or second pipeline through screw thread matching, the outer ring of the connecting pipe is also provided with two rectangular grooves which are symmetrical about the rotating ring, a rubber sheet is fixedly arranged in the rectangular grooves, a stainless steel rod is fixedly connected on the rubber sheet, one end of the stainless steel rod extends out of the connecting pipe, the other end of the stainless steel rod extends into the connecting pipe, one end of the stainless steel rod extending out of the connecting pipe is attracted with the magnetic attraction block, one end of the stainless steel rod extending into the connecting pipe is fixedly provided with a push rod, an intermediate support plate is fixedly welded at the inner ring of the middle section of the connecting pipe, two sides of the intermediate support plate are fixedly welded with second springs, one end of the second springs away from the intermediate support plate is fixedly connected with the stainless steel rod, the inner parts of the first pipeline and the second pipeline are respectively provided with an automatic opening and closing structure, one of them waterproof board is last fixedly to be provided with inlet tube and outlet pipe, inlet tube and first cavity intercommunication, the outlet pipe communicates with the second cavity.
As a further optimization scheme of the application, the automatic opening and closing structure comprises a circular moving plate, a first supporting ring, a second supporting ring and a first spring, wherein the first supporting ring and the second supporting ring are fixedly welded on the inner wall of the first pipeline or the second pipeline, the second supporting ring is positioned at one end of the first pipeline or the second pipeline, which is close to the connecting pipe, the circular moving plate is movably arranged between the corresponding second supporting ring and the first supporting ring, one end of the first spring is fixedly welded on one surface of the first supporting ring, which is close to the second supporting ring, the other end of the first spring is fixedly welded on one surface of the circular moving plate, which is close to the first supporting ring, the diameter of the circular moving plate is smaller than the inner diameter of the connecting pipe, the inner diameters of the second supporting ring and the first supporting ring are equal, the inner diameter of the second supporting ring is smaller than the diameter of the circular moving plate, and the push rod is opposite to the middle position of one surface of the circular moving plate, which is far away from the first spring.
As a further optimization scheme of the application, the waterproof plate is provided with a plurality of anchoring holes, the plurality of anchoring holes are distributed equidistantly, anchor rods are installed in the anchoring holes in a matched mode, the anchor rods are anchored in the foundation pit after movably penetrating through the anchoring holes, one end of each anchor rod is connected with an annular sealing plate in a threaded matched mode, the annular sealing plate is movably attached to one surface, far away from the inner wall of the foundation pit, of the waterproof plate, and a rubber pad is fixedly arranged on one surface, close to the waterproof plate, of each annular sealing plate.
As a further optimization scheme of the application, a hollow groove is formed in the anchor rod, a grouting hole is formed in one end, far away from the anchor rod, of the anchor rod, which is anchored in the foundation pit, the grouting hole is communicated with the hollow groove, sealing plugs are clamped at the grouting hole, anchor holes are further formed in the anchor rod, the anchor holes are distributed at equal intervals, the anchor holes penetrate through the inner ring and the outer ring of the anchor rod at the same time, a unidirectional sealing plate is movably attached to the position, penetrating through the outer ring of the anchor rod, of the anchor hole, one end, far away from the annular sealing plate, of the unidirectional sealing plate is fixedly connected to the outer ring of the anchor rod through an elastic strip, and the diameter of the unidirectional sealing plate is larger than that of the anchor hole.
As a further optimization scheme of the application, an annular groove is formed in the inner wall of the grouting hole, a rubber sleeve is fixedly arranged at one end of the sealing plug close to the grouting hole, the rubber sleeve faces to an opening at one end of the hollow groove, an annular bulge part is integrally formed on the rubber sleeve and is matched and clamped in the annular groove, and an annular cavity is formed at the inner ring of the annular bulge part.
As a further optimization scheme of the application, one surface of the annular sealing plate, which is far away from the waterproof plate, is fixedly connected with a erection plate, a plurality of erection holes are formed in the erection plate, and a plurality of erection plates are arranged.
As a further optimization scheme of the application, a rubber layer is fixedly arranged at the inner ring of the rotating ring, and the rubber layer is movably attached to the outer ring of the connecting pipe.
According to the further optimization scheme, after the anchor rods are anchored in the foundation pit, sealing plugs at grouting holes are removed, grouting machines are connected to the grouting holes, secondary grouting anchoring is carried out on the foundation pit, grout sequentially passes through the grouting holes, the hollow grooves and the anchor holes and is anchored in the foundation pit to form tree-shaped distributed concrete, after the tree-shaped distributed concrete is formed in the foundation pit, waterproof plates are removed, reinforcing steel meshes are installed on corresponding erection holes, an anchor net is formed after the reinforcing steel meshes are erected, and concrete is poured in the anchor net to form an anchor net pouring layer.
As a further optimization scheme of the application, the baffle plate is provided with a backflow hole penetrating up and down, and an electromagnetic valve is arranged in the backflow hole.
The application also discloses a construction method of the building foundation pit, which comprises any one of the construction equipment of the building foundation pit, and further comprises the following steps:
s1: the method comprises the steps of preparing a refrigerating machine, a refrigerating fluid storage box and a circulating pump, wherein the refrigerating fluid is stored in the refrigerating fluid storage box, the refrigerating machine is arranged on the refrigerating fluid storage box and used for refrigerating the refrigerating fluid, and the circulating pump is connected to the refrigerating fluid storage box and forms a circulating cooling system with a water inlet pipe and a water outlet pipe;
s2: when the foundation pit is dug, firstly, a foundation pit is dug to a groove with a specified length and width, the depth of the groove is one meter, then the foundation pit is dug to the underground under the basis of the specified length and width, the depth of the groove is gradually increased, when the water seepage of the inner wall of the foundation pit is met, a waterproof plate is anchored on the inner wall of the foundation pit by an anchor rod, one-time anchoring waterproof is completed, then a refrigerator and a circulating pump are started, the circulating pump pumps the refrigerating fluid in a refrigerating fluid storage box into a first cavity through a water inlet pipe, so that the integral temperature of the waterproof plate is reduced, the inner wall of the foundation pit is refrigerated, the frozen inner wall of the foundation pit forms a frozen soil layer, water is prevented from continuously seeping out from the inner wall of the foundation pit, at the moment, an electromagnetic valve at the corresponding position is opened, the refrigerating fluid in the first cavity flows into a second cavity after flowing into the second cavity through a backflow hole, and the refrigerating fluid in the second cavity flows back to the refrigerating fluid storage box through a water outlet pipe for continuous use;
s3: the method comprises the steps of secondarily grouting and anchoring, namely dismantling a waterproof plate at the end part of an anchor rod after a frozen soil layer is formed on the inner wall of a foundation pit, rotating an annular sealing plate, attaching the annular sealing plate to the inner wall of the foundation pit, dismantling a sealing plug at a grouting hole after the frozen soil layer is thawed to a certain extent, connecting a grouting machine on the grouting hole, secondarily grouting and anchoring the foundation pit, and sequentially anchoring slurry into the foundation pit through the grouting hole, a hollow groove and an anchor hole to form tree-shaped distributed concrete, so as to form a secondarily grouting anchoring structure;
s4: and (3) constructing a waterproof layer, installing a reinforcing mesh on the erection holes after the secondary grouting anchoring structure is solidified, forming an anchor mesh after the reinforcing mesh is erected, and pouring concrete in the anchor mesh to form an anchor mesh pouring layer.
The application has the beneficial effects that: when the inner wall of the foundation pit is permeated, the waterproof plate is anchored on the inner wall of the foundation pit by the anchor rod to finish one-time anchoring and waterproofing, then the refrigerating machine and the circulating pump are started, the circulating pump pumps the refrigerating fluid in the refrigerating fluid storage box into the first cavity through the water inlet pipe, so that the integral temperature of the waterproof plate is reduced, the inner wall of the foundation pit is frozen, the frozen inner wall of the foundation pit forms a frozen soil layer, water is prevented from continuously seeping out of the inner wall of the foundation pit, the electromagnetic valve at the corresponding position is opened, the refrigerating fluid in the first cavity flows into the second cavity after passing through the reflow hole, and the refrigerating fluid flowing into the second cavity flows back to the refrigerating fluid storage box through the water outlet pipe to be continuously used;
according to the application, the purpose that refrigerating fluid circulates in the waterproof plates can be realized after the waterproof plates are mutually spliced, and when the waterproof plates are dismantled, the refrigerating fluid cannot leak from the first pipeline and the second pipeline at the corresponding positions on the waterproof plates;
according to the application, after the frozen soil layer is thawed to a certain degree, the anchor rod is used for carrying out secondary grouting anchoring on the foundation pit, so that the purposes of further waterproofing and increasing the structural strength of the wall body of the foundation pit are realized, when the frozen soil layer is thawed to be about to be discharged, the anchor rod can be used for carrying out secondary grouting anchoring on the foundation pit, and the phenomenon of loose soil can occur after the frozen soil layer is thawed, therefore, the foundation pit is subjected to secondary grouting anchoring at the moment, and the thawed foundation pit can be further reinforced, so that the mode of insufficient strength of the foundation pit caused by loose soil which is easy to occur after the anchor rod is thawed is replaced;
when the thick liquid exerts pressure to the sealing plug, thick liquid can flow into the inside of rubber sleeve and annular cavity, and the pressure that thick liquid is big more, the annular bulge part inner circle department receives the pressure more to better laminating seals in the ring channel, has avoided the thick liquid to leak.
Drawings
FIG. 1 is a schematic diagram of construction equipment for a building foundation pit of the present application;
FIG. 2 is a cross-sectional view of the construction equipment for building foundation pit of the present application;
FIG. 3 is a schematic view of a construction apparatus for constructing a foundation pit of a building according to the present application, with anchors installed thereon;
FIG. 4 is a schematic view of another view of the construction equipment for constructing a foundation pit of a building according to the present application, with anchors installed thereon;
FIG. 5 is a cross-sectional view of the construction equipment for a building foundation pit of the present application with anchors installed thereon;
FIG. 6 is an enlarged view of FIG. 1A in accordance with the present application;
FIG. 7 is an enlarged view of FIG. 2B in accordance with the present application;
FIG. 8 is an enlarged view of FIG. 3 at C in accordance with the present application;
FIG. 9 is an enlarged view of the application at D in FIG. 4;
FIG. 10 is an enlarged view of FIG. 5 at E in accordance with the present application;
fig. 11 is a schematic view of the structure of the flashing of the present application when installed in a foundation pit;
fig. 12 is a schematic view of the structure of the flashing of the present application when anchored in a foundation pit using anchor rods;
FIG. 13 is a schematic view of the construction of the present application when the flashing is removed and then secondarily grouted to form a tree-like distribution of concrete;
fig. 14 is a schematic view of the construction of the application when the mesh reinforcement is installed after the waterproof board is removed.
In the figure: the foundation pit 1, the waterproof board 2, the first pipe 21, the second pipe 22, the anchor hole 23, the water inlet pipe 201, the water outlet pipe 202, the partition 203, the return hole 231, the solenoid valve 232, the first chamber 204, the second chamber 205, the anchor rod 3, the annular sealing plate 31, the hollow groove 32, the anchor hole 33, the sealing plug 34, the annular groove 35, the grouting hole 36, the rubber sleeve 37, the annular chamber 38, the annular convex portion 39, the tree-like distributed concrete 301, the unidirectional sealing plate 302, the elastic strip 303, the rubber pad 311, the setting plate 312, the setting hole 313, the reinforcing mesh 4, the anchor mesh pouring layer 41, the connecting pipe 5, the rotating ring 51, the magnetic attraction block 52, the stainless steel rod 53, the rectangular groove 54, the rubber sheet 55, the circular moving plate 56, the first spring 57, the first supporting ring 58, the second supporting ring 59, the intermediate supporting plate 60, the second spring 61, the rubber layer 62, and the push rod 63.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, wherein it is to be understood that the following detailed description is for the purpose of further illustrating the application only and is not to be construed as limiting the scope of the application, as various insubstantial modifications and adaptations of the application to those skilled in the art can be made in light of the foregoing disclosure.
As shown in fig. 1 to 14, a construction equipment for building foundation pit comprises a foundation pit 1, wherein a waterproof board 2 is paved on the inner wall of the foundation pit 1, in order to solve the problem that the water quantity required to be extracted is large when the water seepage quantity is large, the cost of the construction of the building foundation pit is increased both in terms of water discharge and energy waste, a partition 203 is fixedly arranged in the waterproof board 2, the partition 203 partitions the inside of the waterproof board 2 into a first cavity 204 and a second cavity 205 which are distributed up and down, both sides of the waterproof board 2 are respectively provided with a first pipeline 21 and a second pipeline 22, the first pipeline 21 and the second pipeline 22 are distributed up and down, the first pipeline 21 is communicated with the first cavity 204, the second pipeline 22 is communicated with the second cavity 205, the waterproof board 2 is provided with a plurality of waterproof boards 2 which are equidistantly paved on the inner wall of the foundation pit 1, a connecting pipe 5 is arranged between the two adjacent waterproof boards 2, the connecting pipe 5 is communicated between two corresponding first pipelines 21 or two corresponding second pipelines 22, a water inlet pipe 201 and a water outlet pipe 202 are fixedly arranged on one waterproof board 2, the water inlet pipe 201 is communicated with a first cavity 204, the water outlet pipe 202 is communicated with a second cavity 205, a refrigerating machine, a refrigerating fluid storage box and a circulating pump are prepared, refrigerating fluid is stored in the refrigerating fluid storage box, the refrigerating machine is arranged on the refrigerating fluid storage box and is used for refrigerating the refrigerating fluid, the circulating pump is connected on the refrigerating fluid storage box and forms a circulating cooling system with the water inlet pipe 201 and the water outlet pipe 202, when the foundation pit 1 is excavated, the depth of the groove is one meter, then the foundation pit is excavated underground on the basis of the specified length and width, the depth of the groove is gradually increased, when the inner wall of the foundation pit 1 is met, the waterproof board 2 is anchored on the inner wall of the foundation pit 1 by using the anchor rods 3, after one-time anchoring and waterproofing are completed, then a refrigerator and a circulating pump are started, the circulating pump pumps the refrigerating fluid in the refrigerating fluid storage box into the first chamber 204 through the water inlet pipe 201, so that the overall temperature of the waterproof plate 2 is reduced, the inner wall of the foundation pit 1 is frozen, the frozen inner wall of the foundation pit 1 forms a frozen soil layer, water is prevented from continuously seeping out from the inner wall of the foundation pit 1, the electromagnetic valve 232 at the corresponding position is opened at the moment, the refrigerating fluid in the first chamber 204 flows into the second chamber 205 through the backflow hole 231, and the refrigerating fluid flowing into the second chamber 205 flows back to the refrigerating fluid storage box through the water outlet pipe 202 for continuous use.
In actual operation, waterproof board 2 has still been laid to the bottom surface at foundation ditch 1 for freeze waterproof to foundation ditch 1 bottom surface, when needs continue the excavation with foundation ditch 1, demolish waterproof board 2 gradually, if: dismantling a waterproof board 2 and excavating this position, lay waterproof board 2 once more after excavating one meter to continue to freeze foundation ditch 1 bottom surface of new digging, avoided the phenomenon of foundation ditch 1 bottom surface infiltration.
It should be noted that, when the plurality of waterproof boards 2 are laid on the inner wall of the foundation pit 1, the circulating refrigerating fluid can uniformly pass through the inside of the plurality of waterproof boards 2, thereby refrigerating the inner wall of the foundation pit 1 on which the waterproof boards 2 are laid.
The outer ring of the middle section of the connecting pipe 5 is rotatably provided with a rotating ring 51, the rotating ring 51 is fixedly provided with a magnetic attraction block 52, both ends of the connecting pipe 5 are connected to the corresponding first pipeline 21 or second pipeline 22 through screw thread matching, the outer ring of the connecting pipe 5 is also provided with two rectangular grooves 54, the two rectangular grooves 54 are symmetrical relative to the rotating ring 51, a rubber sheet 55 is fixedly arranged in the rectangular grooves 54, the rubber sheet 55 can elastically deform and is used for adapting to the movement of a stainless steel rod 53 in the rectangular grooves 54, freezing liquid cannot leak at the rectangular grooves 54, a stainless steel rod 53 is fixedly connected to the rubber sheet 55, one end of the stainless steel rod 53 extends out of the connecting pipe 5, the other end extends into the connecting pipe 5, the end of the stainless steel rod 53 extending out of the connecting pipe 5 is attracted with the magnetic attraction block 52, one end of the stainless steel rod 53 extending into the connecting pipe 5 is fixedly provided with a push rod 63, an intermediate support plate 60 is fixedly welded at the inner ring of the middle section position of the connecting pipe 5, a second spring 61 is fixedly welded at both sides of the intermediate support plate 60, one end of the second spring 61 away from the intermediate support plate 60 is fixedly connected with the stainless steel rod 53, the inside of the first pipeline 21 and the inside of the second pipeline 22 are respectively provided with an automatic opening and closing structure, when both ends of the connecting pipe 5 are connected on the corresponding first pipeline 21 or second pipeline 22 through threaded fit, the rotating ring 51 is rotated, the magnetic attraction block 52 on the rotating ring 51 is staggered with the stainless steel rod 53, the stainless steel rod 53 moves towards the direction away from the rotating ring 51 under the elastic action of the second spring 61 after the attraction force of the magnetic attraction block 52 is removed by the stainless steel rod 53, the push rod 63 synchronously moves when the stainless steel rod 53 moves, the push rod 63 pushes the automatic opening and closing structure to open, so that the chambers between the interiors of adjacent waterproof plates 2 are mutually communicated, realizing circulation of the refrigerating fluid; when the rotating ring 51 is rotated to enable the magnetic attraction block 52 to attract the stainless steel rod 53, the stainless steel rod 53 and the push rod 63 are reset, so that the automatic opening and closing structure is closed, the first pipeline 21 or the second pipeline 22 is closed, freezing liquid leakage at the positions of the first pipeline 21 and the second pipeline 22 is avoided, the purpose that the freezing liquid flows in the waterproof boards 2 after the waterproof boards 2 are mutually spliced is achieved, and when the waterproof boards 2 are dismantled, the freezing liquid cannot leak at the positions of the first pipeline 21 and the second pipeline 22 at corresponding positions on the waterproof boards 2.
Considering that the rotating ring 51 can rotate at the outer ring of the connecting pipe 5, when the rotating ring is required to be positioned after rotating, therefore, the rubber layer 62 is fixedly arranged at the inner ring of the rotating ring 51, the rubber layer 62 is movably attached to the outer ring of the connecting pipe 5, the damping of the rubber layer 62 and the outer ring of the connecting pipe 5 is higher, and when the rotating ring 51 rotates, the rotating ring is fixed on the outer ring of the connecting pipe 5 and cannot automatically rotate, so that the magnetic attraction block 52 and the stainless steel rod 53 are staggered.
The automatic opening and closing structure comprises a circular moving plate 56, a first supporting ring 58, a second supporting ring 59 and a first spring 57, wherein the first supporting ring 58 and the second supporting ring 59 are fixedly welded on the inner wall of the first pipeline 21 or the second pipeline 22, the second supporting ring 59 is positioned at one end of the first pipeline 21 or the second pipeline 22, which is close to the connecting pipe 5, the circular moving plate 56 is movably arranged between the corresponding second supporting ring 59 and the first supporting ring 58, one end of the first spring 57 is fixedly welded on one surface of the first supporting ring 58, which is close to the second supporting ring 59, the other end of the first spring 57 is fixedly welded on one surface of the circular moving plate 56, which is close to the first supporting ring 58, the diameter of the circular moving plate 56 is smaller than the inner diameter of the connecting pipe 5, the inner diameters of the second supporting ring 59 and the first supporting ring 58 are equal, the inner diameter of the second supporting ring 59 is smaller than the diameter of the circular moving plate 56, and the push rod 63 is opposite to the middle position of one surface of the circular moving plate 56, which is far away from the first spring 57; when the push rod 63 moves in a direction away from the rotating ring 51, the push rod 63 pushes the circular moving plate 56 to approach the first supporting ring 58, so that the freezing liquid can sequentially pass through the connecting pipe 5, the inner ring of the second supporting ring 59, the gap between the outer ring of the circular moving plate 56 and the inner wall of the connecting pipe 5, and the inner ring of the first supporting ring 58; the circulation of the refrigerating fluid is realized, when the connecting pipe 5 is removed, the circular moving plate 56 loses the abutting action of the push rod 63, and the compressed first spring 57 drives the circular moving plate 56 to reset so as to seal the inner ring of the second supporting ring 59, thereby avoiding the leakage of the refrigerating fluid in the waterproof plate 2.
The baffle 203 is provided with a back flow hole 231 penetrating up and down, the back flow hole 231 is provided with an electromagnetic valve 232, and it should be noted that after two adjacent waterproof boards 2 are spliced, the electromagnetic valve 232 on one waterproof board 2 far away from the water inlet pipe 201 is started, so that the refrigerating fluid is guaranteed to flow back through the electromagnetic valve 232 after being opened after sequentially passing through the first chambers 204 in the plurality of waterproof boards 2 and flow into the water outlet pipe 202 after sequentially passing through the second chambers 205 in the plurality of waterproof boards 2 for recycling.
Be provided with anchor hole 23 on waterproof board 2, anchor hole 23 is provided with a plurality ofly, a plurality of anchor holes 23 equidistance distributes, anchor rod 3 is installed in the cooperation in the anchor hole 23, anchor rod 3 activity passes anchor hole 23 back anchor in foundation ditch 1, realized fixing waterproof board 2 on the inner wall of foundation ditch 1 purpose, the one end of anchor rod 3 is connected with annular closing plate 31 through the screw-thread fit, annular closing plate 31 plays waterproof purpose, the phenomenon that water oozes water from the anchor position of stock 3 has been avoided, annular closing plate 31 movable fit is in the one side of waterproof board 2 keeping away from the inner wall of foundation ditch 1, annular closing plate 31 is close to the one side of waterproof board 2 and still fixedly provided with rubber pad 311, the water-proof effects is better.
The anchor rod 3 is internally provided with a hollow groove 32, one end, far away from the anchor rod 3, of the anchor rod is provided with a grouting hole 36, the grouting hole 36 is communicated with the hollow groove 32, a sealing plug 34 is clamped at the grouting hole 36, the anchor rod 3 is also provided with a plurality of anchor holes 33, the anchor holes 33 are distributed at equal intervals, the anchor holes 33 penetrate through the inner ring and the outer ring of the anchor rod 3 at the same time, when the inner wall of the foundation pit 1 forms a frozen soil layer, a waterproof plate 2 at the end part of the anchor rod 3 is dismantled, an annular sealing plate 31 is rotated, the annular sealing plate 31 is attached to the inner wall of the foundation pit 1, after the frozen soil layer is thawed to a certain degree, a sealing plug 34 at the grouting hole 36 is removed, a grouting machine is connected to the grouting hole 36, the foundation pit 1 is subjected to secondary grouting anchoring, and the grouting is sequentially anchored into the foundation pit 1 through the grouting holes 36, the hollow groove 32 and the anchor holes 33 to form a tree-shaped distributed concrete 301, and a secondary grouting anchoring structure is formed; according to the application, after the frozen soil layer is thawed to a certain extent, the anchor rod 3 is used for carrying out secondary grouting anchoring on the foundation pit 1, so that the purposes of further waterproofing and increasing the structural strength of the wall body of the foundation pit 1 are realized, when the frozen soil layer is thawed to be about to be discharged, the anchor rod 3 can be used for carrying out secondary grouting anchoring on the foundation pit 1, and the phenomenon of loose soil can occur after the frozen soil layer is thawed, therefore, the foundation pit 1 after being thawed is subjected to secondary grouting anchoring at the moment, and the mode that the foundation pit 1 is insufficient in strength due to loose soil is replaced by the fact that the foundation pit 1 is thawed after being anchored first.
In order to ensure that the anchor hole 33 on the anchor rod 3 is not blocked by soil when one-time anchoring is performed, a unidirectional sealing plate 302 is movably attached to the position, penetrating through the outer ring of the anchor rod 3, of the anchor hole 33, one end, far away from the annular sealing plate 31, of the unidirectional sealing plate 302 is fixedly connected to the outer ring of the anchor rod 3 through an elastic strip 303, the diameter of the unidirectional sealing plate 302 is larger than that of the anchor hole 33, the unidirectional sealing plate 302 is opened and closed, and the unidirectional sealing plate 302 is opened only when slurry is pushed to generate pressure when the slurry is injected into the hollow groove 32, so that the slurry is discharged from the anchor hole 33 to anchor the foundation pit 1.
When the secondary grouting is anchored, the sealing plug 34 can be arranged at the position of the grouting hole 36, the leakage of slurry in the hollow groove 32 is avoided, and when the pressure of a soil layer in the foundation pit 1 is applied to the sealing plug 34 by the slurry in the hollow groove 32, the sealing plug 34 is easy to loosen, the slurry can leak from the grouting hole 36 when the sealing plug 34 is loosened, therefore, the annular groove 35 is arranged on the inner wall of the grouting hole 36, the rubber sleeve 37 is fixedly arranged at one end of the sealing plug 34 close to the grouting hole 36, the rubber sleeve 37 faces to one end opening inside the hollow groove 32, the annular bulge 39 is integrally arranged on the rubber sleeve 37, the annular bulge 39 is matched and clamped in the annular groove 35, an annular cavity 38 is formed at the inner ring of the annular bulge 39, when the slurry applies pressure to the sealing plug 34, the slurry can flow into the inner parts of the rubber sleeve 37 and the annular cavity 38, and the pressure applied to the inner ring of the annular bulge 39 is larger, so that the slurry can be better bonded and sealed in the annular groove 35, and the leakage of the slurry is avoided.
The annular sealing plate 31 is fixedly connected with a erection plate 312 on one side far away from the waterproof plate 2, a plurality of erection holes 313 are formed in the erection plate 312, a reinforcing mesh 4 is installed on the erection holes 313 after the secondary grouting anchoring structure is solidified, an anchor mesh is formed after the reinforcing mesh 4 is erected, and concrete is poured in the anchor mesh to form an anchor mesh pouring layer 41, so that final waterproof fixation is formed.
When the waterproof device is applied, a rubber pipe section can be arranged on the connecting pipe 5, so that the connection between the waterproof plates 2 on the adjacent inner walls of the foundation pit 1 is realized, and the specific arrangement mode is as follows: the two end parts of the rubber pipe section are provided with the structures of the connecting pipe 5, the magnetic attraction block 52, the rotating ring 51, the circular moving plate 56, the stainless steel rod 53 and the like, and the principle is the same, so that the rubber pipe section can be changed according to actual requirements by a person skilled in the art.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (5)
1. The construction method of the building foundation pit is characterized by comprising the following steps of: the construction equipment comprises a building foundation pit construction equipment, the equipment further comprises a foundation pit (1), waterproof plates (2) are paved on the inner wall of the foundation pit (1), and is characterized in that a partition plate (203) is fixedly arranged in the waterproof plates (2), the partition plate (203) partitions the inside of the waterproof plates (2) into a first cavity (204) and a second cavity (205) which are distributed up and down, both sides of the waterproof plates (2) are respectively provided with a first pipeline (21) and a second pipeline (22), the waterproof plates (2) are provided with a plurality of waterproof plates (2) which are equidistantly paved on the inner wall of the foundation pit (1), a connecting pipe (5) is arranged between two adjacent waterproof plates (2), the connecting pipe (5) is communicated between the two corresponding first pipelines (21) or the two corresponding second pipelines (22), a rotating ring (51) is rotationally arranged at the outer ring of the middle section of the connecting pipe (5), a magnetic suction block (52) is fixedly arranged on the rotating ring (51), two rectangular grooves (54) are further arranged at the positions of the connecting pipe (5), two rectangular grooves (54) are respectively provided with two rectangular grooves (55) respectively, two rectangular grooves (55) are respectively formed in the connecting pipe (55), one end of the stainless steel rod (53) extends out of the connecting pipe (5), the other end of the stainless steel rod extends into the connecting pipe (5), one end of the stainless steel rod (53) extending out of the connecting pipe (5) is attracted with the magnetic attraction block (52), one end of the stainless steel rod (53) extending into the connecting pipe (5) is fixedly provided with a push rod (63), an inner ring of the middle section of the connecting pipe (5) is fixedly welded with a middle supporting plate (60), two sides of the middle supporting plate (60) are fixedly welded with second springs (61), one end of the second springs (61) away from the middle supporting plate (60) is fixedly connected with the stainless steel rod (53), and automatic opening and closing structures are arranged in the first pipeline (21) and the second pipeline (22); the waterproof plate (2) is provided with anchoring holes (23), the plurality of anchoring holes (23) are formed in the waterproof plate (2) at equal intervals, anchor rods (3) are installed in the anchoring holes (23) in a matched mode, the anchor rods (3) movably penetrate through the anchoring holes (23) and then are anchored in the foundation pit (1), one ends of the anchor rods (3) are connected with annular sealing plates (31) in a threaded matched mode, the annular sealing plates (31) are movably attached to one face, far away from the inner wall of the foundation pit (1), of the waterproof plate (2), and rubber pads (311) are fixedly arranged on one face, close to the waterproof plate (2), of the annular sealing plates (31); the anchor rod is characterized in that a hollow groove (32) is formed in the anchor rod (3), a grouting hole (36) is formed in one end, far away from the anchor rod, of the anchor rod (3) and anchored in the foundation pit (1), the grouting hole (36) is communicated with the hollow groove (32), a sealing plug (34) is clamped at the grouting hole (36), anchor holes (33) are further formed in the anchor rod (3), the anchor holes (33) are formed in a plurality of, the anchor holes (33) are distributed at equal intervals, the anchor holes (33) penetrate through the inner ring and the outer ring of the anchor rod (3) at the same time, a one-way sealing plate (302) is movably attached to the position, penetrating through the outer ring of the anchor rod (3), of one-way sealing plate (302) is fixedly connected to the outer ring of the anchor rod (3) through an elastic strip (303), and the diameter of the one-way sealing plate (302) is larger than that of the anchor holes (33). An annular groove (35) is formed in the inner wall of the grouting hole (36), a rubber sleeve (37) is fixedly arranged at one end, close to the grouting hole (36), of the sealing plug (34), the rubber sleeve (37) faces towards one end opening in the hollow groove (32), an annular protruding portion (39) is integrally formed in the rubber sleeve (37), the annular protruding portion (39) is matched and clamped in the annular groove (35), and an annular cavity (38) is formed in the inner ring of the annular protruding portion (39); one surface of the annular sealing plate (31) far away from the waterproof plate (2) is fixedly connected with a erection plate (312), a plurality of erection holes (313) are formed in the erection plate (312), and a plurality of erection plates (312) are arranged; the first pipeline (21) and the second pipeline (22) are distributed up and down, the first pipeline (21) is communicated with the first chamber (204), the second pipeline (22) is communicated with the second chamber (205), a water inlet pipe (201) and a water outlet pipe (202) are fixedly arranged on one waterproof board (2), the water inlet pipe (201) is communicated with the first chamber (204), the water outlet pipe (202) is communicated with the second chamber (205), a backflow hole (231) penetrating up and down is formed in the partition board (203), and an electromagnetic valve (232) is arranged in the backflow hole (231); the method comprises the following steps:
s1: the method comprises the steps of preparing a refrigerating machine, a refrigerating fluid storage box and a circulating pump, wherein the refrigerating fluid storage box stores refrigerating fluid, the refrigerating machine is arranged on the refrigerating fluid storage box and used for refrigerating the refrigerating fluid, and the circulating pump is connected to the refrigerating fluid storage box and forms a circulating cooling system with a water inlet pipe (201) and a water outlet pipe (202);
s2: during excavation, firstly, a foundation pit (1) is excavated to a groove with a specified length and a specified width, the depth of the groove is one meter, then the foundation pit is excavated to the underground under the specified length and the specified width, the depth of the groove is gradually increased, when water seepage occurs to the inner wall of the foundation pit (1), a waterproof plate (2) is anchored to the inner wall of the foundation pit (1) through anchor rods (3), once anchoring and waterproofing are completed, then a refrigerator and a circulating pump are started, the circulating pump pumps the refrigerating fluid in a refrigerating fluid storage box into a first cavity (204) through a water inlet pipe (201), so that the whole temperature of the waterproof plate (2) is reduced, the inner wall of the foundation pit (1) is frozen, the frozen inner wall of the foundation pit (1) after freezing forms a frozen soil layer, water is prevented from continuously seeping from the inner wall of the foundation pit (1), at the corresponding position of an electromagnetic valve (232) is opened, the refrigerating fluid in the first cavity (204) flows into a second cavity (205) through a reflux hole (231), and the refrigerating fluid flowing into the second cavity (205) is refluxed to the refrigerating fluid storage box through a water outlet pipe (202) for continuous use;
s3: the method comprises the steps of secondarily grouting and anchoring, namely, after a frozen soil layer is formed on the inner wall of a foundation pit (1), dismantling a waterproof plate (2) at the end part of an anchor rod (3), rotating an annular sealing plate (31), attaching the annular sealing plate (31) to the inner wall of the foundation pit (1), removing a sealing plug (34) at a grouting hole (36) after the frozen soil layer is thawed to a certain extent, connecting a grouting machine on the grouting hole (36), secondarily grouting and anchoring the foundation pit (1), and sequentially anchoring the grouting holes (36), a hollow groove (32) and anchor holes (33) into the foundation pit (1) to form tree-shaped distributed concrete (301), so as to form a secondarily grouting and anchoring structure;
s4: and (3) waterproof layer construction, wherein a reinforcing steel bar net (4) is installed on the erection hole (313) after the secondary grouting anchoring structure is solidified, the reinforcing steel bar net (4) is erected to form an anchor net, and concrete is poured into the anchor net to form an anchor net pouring layer (41).
2. The construction equipment for the building foundation pit is applied to the method of claim 1, the equipment further comprises a foundation pit (1), a waterproof plate (2) is paved on the inner wall of the foundation pit (1), and is characterized in that a partition plate (203) is fixedly arranged in the waterproof plate (2), the partition plate (203) partitions the inside of the waterproof plate (2) into a first cavity (204) and a second cavity (205) which are distributed up and down, two sides of the waterproof plate (2) are respectively provided with a first pipeline (21) and a second pipeline (22), the waterproof plate (2) is provided with a plurality of waterproof plates (2) which are paved on the inner wall of the foundation pit (1) at equal intervals, a connecting pipe (5) is arranged between the two adjacent waterproof plates (2), the connecting pipe (5) is communicated between the two corresponding first pipelines (21) or the two corresponding second pipelines (22), a rotating ring (51) is rotatably arranged at the middle section of the connecting pipe (5), a magnetic suction block (52) is fixedly arranged on the rotating ring (51), two rectangular grooves (54) are formed in the connecting pipe (5), two rectangular grooves (54) are also formed in the connecting pipe (54), two rectangular grooves (55) are formed in the connecting pipe (54), one end of the stainless steel rod (53) extends out of the connecting pipe (5), the other end of the stainless steel rod extends into the connecting pipe (5), one end of the stainless steel rod (53) extending out of the connecting pipe (5) is attracted with the magnetic attraction block (52), one end of the stainless steel rod (53) extending into the connecting pipe (5) is fixedly provided with a push rod (63), an inner ring of the middle section of the connecting pipe (5) is fixedly welded with a middle supporting plate (60), two sides of the middle supporting plate (60) are fixedly welded with second springs (61), one end of the second springs (61) away from the middle supporting plate (60) is fixedly connected with the stainless steel rod (53), and automatic opening and closing structures are arranged in the first pipeline (21) and the second pipeline (22); the waterproof plate (2) is provided with anchoring holes (23), the plurality of anchoring holes (23) are formed in the waterproof plate (2) at equal intervals, anchor rods (3) are installed in the anchoring holes (23) in a matched mode, the anchor rods (3) movably penetrate through the anchoring holes (23) and then are anchored in the foundation pit (1), one ends of the anchor rods (3) are connected with annular sealing plates (31) in a threaded matched mode, the annular sealing plates (31) are movably attached to one face, far away from the inner wall of the foundation pit (1), of the waterproof plate (2), and rubber pads (311) are fixedly arranged on one face, close to the waterproof plate (2), of the annular sealing plates (31); the anchor rod is characterized in that a hollow groove (32) is formed in the anchor rod (3), a grouting hole (36) is formed in one end, far away from the anchor rod, of the anchor rod (3) and anchored in the foundation pit (1), the grouting hole (36) is communicated with the hollow groove (32), a sealing plug (34) is clamped at the grouting hole (36), anchor holes (33) are further formed in the anchor rod (3), the anchor holes (33) are formed in a plurality of, the anchor holes (33) are distributed at equal intervals, the anchor holes (33) penetrate through the inner ring and the outer ring of the anchor rod (3) at the same time, a one-way sealing plate (302) is movably attached to the position, penetrating through the outer ring of the anchor rod (3), of one-way sealing plate (302) is fixedly connected to the outer ring of the anchor rod (3) through an elastic strip (303), and the diameter of the one-way sealing plate (302) is larger than that of the anchor holes (33). An annular groove (35) is formed in the inner wall of the grouting hole (36), a rubber sleeve (37) is fixedly arranged at one end, close to the grouting hole (36), of the sealing plug (34), the rubber sleeve (37) faces towards one end opening in the hollow groove (32), an annular protruding portion (39) is integrally formed in the rubber sleeve (37), the annular protruding portion (39) is matched and clamped in the annular groove (35), and an annular cavity (38) is formed in the inner ring of the annular protruding portion (39); one surface of the annular sealing plate (31) far away from the waterproof plate (2) is fixedly connected with a erection plate (312), a plurality of erection holes (313) are formed in the erection plate (312), and a plurality of erection plates (312) are arranged; first pipeline (21) and second pipeline (22) distribute from top to bottom, and first pipeline (21) and first cavity (204) intercommunication, second pipeline (22) and second cavity (205) intercommunication, fixed inlet tube (201) and outlet pipe (202) that are provided with on one of them waterproof board (2), inlet tube (201) and first cavity (204) intercommunication, outlet pipe (202) and second cavity (205) intercommunication, be provided with backflow hole (231) that run through from top to bottom on baffle (203), be provided with solenoid valve (232) in backflow hole (231).
3. The construction machine for building foundation pit according to claim 2, wherein: the two ends of the connecting pipe (5) are connected to the corresponding first pipeline (21) or second pipeline (22) through screw thread matching, the automatic opening and closing structure comprises a circular moving plate (56), a first supporting ring (58), a second supporting ring (59) and a first spring (57), the first supporting ring (58) and the second supporting ring (59) are fixedly welded on the inner wall of the first pipeline (21) or the second pipeline (22), the second supporting ring (59) is positioned at one end of the first pipeline (21) or the second pipeline (22) close to the connecting pipe (5), the circular moving plate (56) is movably arranged between the corresponding second supporting ring (59) and the first supporting ring (58), one end of the first spring (57) is fixedly welded on one surface of the first supporting ring (58) close to the second supporting ring (59), the other end of the first spring (57) is fixedly welded on one surface of the circular moving plate (56) close to the first supporting ring (58), the diameter of the circular moving plate (56) is smaller than one end of the connecting pipe (5) close to the connecting pipe (5), the diameter of the circular moving plate (56) is smaller than the diameter of the first supporting ring (59) is equal to the diameter of the second supporting ring (59), the push rod (63) is opposite to the middle position of one surface of the circular moving plate (56) far away from the first spring (57).
4. The construction machine for building foundation pit according to claim 2, wherein: a rubber layer (62) is fixedly arranged at the inner ring of the rotating ring (51), and the rubber layer (62) is movably attached to the outer ring of the connecting pipe (5).
5. The construction machine for building foundation pit according to claim 2, wherein: the anchor rod (3) is anchored in the foundation pit (1), after the sealing plug (34) at the grouting hole (36) is removed, a grouting machine is connected to the grouting hole (36), the foundation pit (1) is secondarily grouting anchored, grout sequentially passes through the grouting hole (36), the hollow groove (32) and the anchor hole (33) and is anchored in the foundation pit (1) to form tree-shaped distributed concrete (301), the tree-shaped distributed concrete (301) is formed in the foundation pit (1), after the waterproof board (2) is removed, a reinforcing steel bar net (4) is installed on the corresponding erection hole (313), an anchor net is formed after the reinforcing steel bar net (4) is erected, and the concrete is poured in the anchor net to form an anchor net pouring layer (41).
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| WO2018113488A1 (en) * | 2016-12-20 | 2018-06-28 | 中国十七冶集团有限公司 | Pipe jacking and freezing system and construction method thereof |
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