CN108755762B - Construction method of fabricated concrete slab - Google Patents
Construction method of fabricated concrete slab Download PDFInfo
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- CN108755762B CN108755762B CN201810603218.4A CN201810603218A CN108755762B CN 108755762 B CN108755762 B CN 108755762B CN 201810603218 A CN201810603218 A CN 201810603218A CN 108755762 B CN108755762 B CN 108755762B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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Abstract
The invention provides a construction method of an assembled concrete slab, which comprises the following steps: carrying out geological survey and corresponding treatment, prefabricating a plurality of concrete plates on the top of the support pile after completing the construction of the enclosure structure and the support pile in advance, and recovering road traffic; settling the concrete slab; measuring deviation of a concrete slab; rectifying the concrete slab; and a plurality of concrete plates are connected and fixed. The invention can avoid the defect that the open cut assembly method has great influence on the surrounding environment and the road traffic, and can realize the purposes of recovering the road traffic within a short period after the construction starts and reducing the influence on the surrounding environment traffic. The invention adopts the precast concrete plate, avoids the manufacturing construction of the concrete plate in the underground space, can greatly improve the quality of the structural bottom plate, can save the underground construction time and shorten the construction period; and meanwhile, the installation is quick, the labor intensity of constructors is greatly reduced, and the construction progress is further accelerated.
Description
Technical Field
The invention belongs to the technical field of building foundation construction, and particularly relates to a construction method of an assembled concrete slab.
Background
Along with the increase of urban development and high-rise buildings, the utilization condition of urban underground space is continuously and rapidly developed, and along with the continuous innovation of subway station construction technology and flow, the construction methods of the current mature underground structures are divided into the following methods:
1. open cut assembly method: firstly, excavating a foundation pit or trench downwards from the earth surface until the designed elevation, then constructing from the bottom to the top in sequence, and backfilling earthwork after finishing the main structure of the underground engineering, and finally finishing the construction of the underground engineering. The construction method can use large-scale equipment to movably assemble the precast concrete structure, and has great influence on the surrounding environment and road traffic.
2. And (3) a subsurface excavation method: namely, the ground is not dug, the construction is carried out by adopting the underground hole digging mode, large-scale equipment cannot be used, and the road traffic can be quickly recovered.
With the popularization of the application of prefabricated concrete structures, the open cut assembly method is taken as a construction form commonly used in subway stations in China at present, has different advantages of simple construction method, mature technology and the like, but has the defects of great influence on the surrounding environment and influence on road traffic. And the existing underground structure construction methods such as subway stations and the like cannot simultaneously show the advantages of open excavation assembly methods and underground excavation methods, and the existing construction process flow cannot meet the comprehensive requirements of people on traffic, city appearance environment, adjacent building safety, foundation pit construction safety, social and economic benefits and the like.
Disclosure of Invention
The invention aims to provide a construction method of an assembled concrete slab, which aims to solve the technical problem that the underground structure construction in the prior art has great influence on the surrounding environment and road traffic by adopting an open cut assembly method.
In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a fabricated concrete panel construction method including the steps of:
geological survey and concrete slab prefabrication:
surveying geological conditions and carrying out corresponding treatment, prefabricating a plurality of concrete plates on the top of a support pile after completing the construction of a building enclosure and the support pile in advance, and recovering road traffic; a central through hole of each concrete plate penetrates through a supporting pile column, and the supporting pile column is in clearance fit with the through hole;
(II) concrete plate settlement construction: a soil taking port is formed in the edge of the concrete slab, and soil is taken from the lower side of the concrete slab through the soil taking port, so that the plurality of concrete slabs sink by self weight;
(III) deviation measurement and correction of the concrete slab: measuring the concrete plates in the sedimentation process by using a deviation measuring device, so that a plurality of concrete plates synchronously sink;
and (IV) connecting and fixing the plurality of concrete plates to form the fabricated concrete plate.
Further, the step (III) comprises the following two steps,
1) concrete slab deflection measurement: the deviation measuring device comprises a plurality of photosensitive sensors which are connected with a terminal computer and are arranged from bottom to top along the height direction of a supporting pile, laser emitters for emitting laser to the photosensitive sensors are arranged at four corners of the upper surface of the concrete slab, and the inclination direction and the deviation of the concrete slab in the sinking process are judged according to data detected by the photosensitive sensors;
2) correcting the concrete slab: according to the inclination direction and the deviation of the concrete slabs, soil is correspondingly taken below the concrete slabs, so that the concrete slabs synchronously keep horizontal sinking.
Further, in the step (four), after the concrete slab at the edge is settled in place, the concrete slab is fixedly connected with the side wall through the first connecting structure.
Further, the first connecting structure comprises a bracket horizontally arranged on the side face of the side wall and a flange plate arranged on the matching surface of the concrete plate and the side wall, and the flange plate on the matching surface of the concrete plate and the side wall is fixedly connected through bolts.
Further, the upper surface of bright bracket is equipped with the stopper, concrete slab's lower surface be equipped with the spacing hole that the stopper corresponds, the stopper is used for the relative position of flange board on the concrete slab and the flange board on the side wall.
Further, in the step (four), the adjacent concrete plates are fixedly connected through a second connecting structure, the second connecting structure comprises a connecting piece and a connecting pin, the connecting piece is horizontally arranged between the two adjacent concrete plates, and the connecting piece is provided with a first positioning hole and a second positioning hole which are matched with the connecting pin in parallel; the two adjacent concrete plates are respectively a first concrete plate and a second concrete plate, the matching surfaces of the first concrete plate and the second concrete plate are respectively provided with a horizontal guide groove for accommodating the connecting piece, and the left side end face of the guide groove of the first concrete plate is provided with a spring; the side surface of the guide groove of the first concrete plate vertically penetrates through a first pin hole matched with the connecting pin, before the first concrete plate is connected with a second concrete plate, the first pin hole corresponds to the first positioning hole, and the side surface of the guide groove of the second concrete plate vertically penetrates through a second pin hole matched with the connecting pin; after the first concrete plate and the second concrete plate are connected, the second pin hole corresponds to the second positioning hole; the length of the connecting piece is greater than that of the guide groove in the second concrete plate; and the connecting pin penetrates through the second pin hole and a second positioning hole in the connecting piece, and concrete is cast in situ in the guide groove and the first pin hole of the first concrete slab.
Furthermore, the middle part of the connecting piece is provided with a limiting table, the first positioning hole is formed in the left large-diameter part of the limiting table, the second positioning hole is formed in the right small-diameter part of the limiting table, the opening end of the guide groove in the first concrete slab is provided with a step matched with the limiting table, and the diameter of the opening of the guide groove in the first concrete slab is the same as that of the right small-diameter part of the connecting piece.
Further, the distance between the second positioning hole and the right end face of the connecting piece is smaller than or equal to the distance between the second pin hole and the right end face of the guide groove in the second concrete slab.
Furthermore, a blind hole for installing a spring is formed in the left side end face of the guide groove of the first concrete slab, and one end of the spring is fixed to the left side end face of the blind hole.
Further, the construction steps of the second connecting structure are as follows:
placing a connecting piece on the left end face of the guide groove of the first concrete plate, penetrating a connecting pin through a first pin hole of the first concrete plate and a first positioning hole on the connecting piece, and compressing a spring on the left end face of the guide groove of the first concrete plate;
after the first concrete plate and the second concrete plate are settled in place, the connecting pin is pulled out, and the connecting piece is bounced into the guide groove of the second concrete plate along the guide groove of the first concrete plate under the action of the spring;
inserting a connecting pin into a second pin hole of a second concrete plate and a second positioning hole of a connecting piece in a guide groove of the second pin hole, and connecting and fixing the connecting piece and the second concrete plate;
the first concrete plate and the second concrete plate are connected integrally by pouring concrete into the guide groove of the first concrete plate with the first pin hole of the first concrete plate as a pouring gate.
The construction method of the fabricated concrete slab provided by the invention has the beneficial effects that: compared with the prior art, the fabricated concrete slab construction method provided by the invention has the advantages that the road traffic can be recovered in a short period after the construction is started and the influence on the surrounding environment is reduced by performing the concrete slab prefabrication in blocks, settling the concrete slab, deviation measurement and correction of the concrete slab and connecting and fixing a plurality of concrete slabs. The invention adopts the precast concrete plate, avoids the manufacturing construction of the concrete plate in the underground space, can greatly improve the quality of the structural bottom plate, can save the underground construction time, shortens the construction period, is quick to install, greatly reduces the labor intensity of constructors and further accelerates the construction progress. The invention can avoid the defect that the open cut assembly method has great influence on the surrounding environment and road traffic.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a plan view of a plurality of concrete slabs after being assembled in a prefabricated concrete slab construction method according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating an installation of an inclination measuring device on a concrete slab in a prefabricated concrete slab construction method according to an embodiment of the present invention;
FIG. 3 is a schematic view of the deflection measuring device of FIG. 2;
fig. 4 is a structural view illustrating a first connection structure in a construction method of a fabricated concrete panel according to an embodiment of the present invention;
fig. 5 is a structural view illustrating a second connection structure in a fabricated concrete panel construction method according to an embodiment of the present invention;
fig. 6 is a schematic view showing a second connection structure of the first concrete plate and the second concrete plate of fig. 5 before the first concrete plate and the second concrete plate are connected;
wherein, in the figures, the respective reference numerals:
1-concrete slab, 11-first concrete slab, 12-second concrete slab; 2-supporting piles, 3-soil taking openings, 4-photosensitive sensors, 5-laser emitters, 6-side walls, 7-bright corbels, 8-flange plates, 9-limiting blocks, 10-connecting pieces, 100-limiting tables, 101-large-diameter parts and 102-small-diameter parts; 13-connecting pin, 14-first positioning hole, 15-second positioning hole, 16-guide groove, 17-spring, 18-first pin hole, 19-second pin hole, 20-step and 21-pulling rope.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The construction method of the fabricated concrete panel according to the present invention will now be described. The construction method of the fabricated concrete slab comprises the following steps: surveying geological conditions and carrying out corresponding treatment, prefabricating a plurality of concrete plates 1 on the top of a support pile 2 after completing the construction of a building enclosure and the support pile 2 in advance, and recovering road traffic; the central through hole of each concrete plate 1 penetrates through a supporting pile column 2 for supporting an underground space structure, the supporting pile columns 2 are in clearance fit with the through holes, and meanwhile, gaps are formed between adjacent concrete plates, so that the concrete plates can sink smoothly.
(II) concrete plate settlement construction: the edge of the concrete slab 1 is provided with a soil taking port 3, and soil is taken from the lower part of the concrete slab 1 through the soil taking port 3. Referring to fig. 1, the concrete slab is designed to be rectangular, a plurality of concrete slabs are spliced in parallel, the soil taking opening is arranged at the four corners of each concrete slab, the soil below the concrete slab is dug from the soil taking opening, and the plurality of concrete slabs are sunk by self weight by adopting a gradual soil taking mode.
(III) deviation measurement and correction of the concrete slab: measuring the concrete plates in the sedimentation process by using a deviation measuring device, so that a plurality of concrete plates synchronously sink; the method comprises the following steps:
1) concrete slab deflection measurement: referring to fig. 2 and 3, the deviation measuring device includes a plurality of photosensitive sensors 4 connected with a terminal computer installed from bottom to top along the height direction of the support pile 2, laser emitters 5 for emitting laser to the photosensitive sensors 4 are installed at four corners of the upper surface of the concrete slab 1, and the inclination direction and deviation of the concrete slab 1 generated in the sinking process are determined according to data detected by the photosensitive sensors 4; in order to ensure the stability of the concrete slab during the sinking process, a traction rope 21 can be arranged around the supporting pile to be connected with the concrete slab.
2) Correcting the concrete slab: according to the inclination direction and the deviation of the concrete plates 1, soil is correspondingly taken below the concrete plates 1, and the plurality of concrete plates 1 synchronously keep horizontal sinking.
Referring to fig. 3, the laser emitters at four corners of the concrete slab emit laser to the photo sensors on the support piles, the photo sensors convert the received optical signals from the laser emitters into electrical signals, and transmit the electrical signals to the terminal computer through the lan, and the computer processes the data to determine the deviation of the concrete slab. Determining the amount of the soil excavated below the concrete slab according to the height difference H detected by the low photosensitive sensor and the high photosensitive sensor, and ensuring that the concrete slab sinks horizontally; and determining the unearthing below the plurality of concrete plates according to the detection data of the photosensitive sensors on the plurality of concrete plates, and ensuring that all the concrete plates are integrally and synchronously sunk.
And (IV) connecting and fixing the plurality of concrete plates to form the fabricated concrete plate.
Wherein, after the concrete slab 1 at the edge is settled in place, the concrete slab is connected and fixed with the side wall 6 through the first connecting structure. Referring to fig. 4, the connecting structure includes a bracket 7 horizontally disposed on the side of the side wall 6, and a flange plate 8 disposed on the mating surface of the concrete plate 1 and the side wall 6, wherein the flange plate 8 on the mating surface of the concrete plate 1 and the side wall 6 is fixed by bolts.
Further optimize above-mentioned technical scheme, the upper surface of bright bracket 7 is equipped with stopper 9, the lower surface of concrete slab 1 be equipped with the spacing hole that stopper 9 corresponds, stopper 9 is used for the relative position of flange board 8 on the 1 flange board of location concrete slab and flange board 8 on the side wall 6. The exposed bracket is made of steel plates, the limiting blocks are made of bolts or short steel bars, one end of the exposed bracket is embedded in the supporting pile, the limiting blocks can be welded on the exposed bracket, the concrete plate at the edge is reserved with limiting holes during prefabrication, the concrete plate and the flange plate on the side wall are made to correspond by means of the matching of the limiting blocks and the limiting holes, and the concrete plate and the flange plate are fixedly connected through the bolts.
And when all the concrete plates reach the designed elevation, the adjacent concrete plates are connected and fixed through the second connecting structure, and the integral assembly of the concrete plates is completed. Referring to fig. 5 and 6, the second connecting structure includes a connecting member 10 and a connecting pin 13, the connecting member 10 is horizontally disposed between two adjacent concrete slabs, and two first positioning holes 14 and two second positioning holes 15 for being matched with the connecting pin 13 are disposed in parallel on the connecting member 10; the two adjacent concrete plates are respectively a first concrete plate 11 and a second concrete plate 12, the matching surfaces of the first concrete plate 11 and the second concrete plate 12 are provided with horizontal guide grooves 16 for accommodating connecting pieces, the left side end surface of the guide groove 16 of the first concrete plate 11 is provided with a spring 17, and the connecting pieces can slide from the guide groove of the first concrete plate to the guide groove of the second concrete plate under the action of the spring; a first pin hole 18 vertically penetrates through the side surface of the guide groove 16 of the first concrete plate 11 and is used for being matched with the connecting pin 13, before the first concrete plate is connected with the second concrete plate, the first pin hole 18 corresponds to the first positioning hole 14, and before the first concrete plate is not connected with the second concrete plate, the connecting piece is limited in the guide groove of the first concrete plate by the connecting pin; a second pin hole 19 vertically penetrates through the side surface of the guide groove 16 of the second concrete plate 12 and is used for being matched with the connecting pin 13, and after the first concrete plate and the second concrete plate are connected, the second pin hole 19 corresponds to the second positioning hole 15; the length of the connecting piece 10 is larger than that of the guide groove 16 in the second concrete plate 12; the connecting pin 13 penetrates through the second pin hole 9 and a second positioning hole 15 on the connecting piece 10, when the connecting pin is pulled out of the first pin hole, the connecting piece slides down to the guide groove of the second concrete plate under the action of a spring, the connecting piece is limited in the guide groove of the second concrete plate by the connecting pin, and concrete is cast in situ into the guide groove 16 and the first pin hole 18 of the first concrete plate 11, so that the first concrete plate is connected with the second concrete plate.
Preferably, a stop 100 is disposed at the middle of the connector 10, the first positioning hole 14 is disposed at the left large-diameter portion 101 of the stop 100, the second positioning hole 15 is disposed at the right small-diameter portion 102 of the stop 100, the opening end of the guide groove 16 in the first concrete plate 11 is provided with a step 20 matched with the stop 100, and the diameter of the opening of the guide groove 16 in the first concrete plate 11 is the same as the diameter of the guide groove 16 in the second concrete plate 12 as the diameter of the right small-diameter portion 102 of the connector 10. And the upper limit platform of the connecting piece is limited by utilizing the step at the opening end of the guide groove in the first concrete plate, so that the connecting piece is arranged at the junction of the first concrete plate and the second concrete plate, and after concrete is poured into the guide groove of the first concrete plate, the first concrete plate and the second concrete plate are connected and fixed.
The height of the large diameter part 101 of the connecting piece 10 is slightly lower than the height of the guide groove 16 in the first concrete plate 11, so that when concrete is poured, the guide groove and the first positioning hole of the first concrete plate are filled with concrete, and the reliable connection of the first concrete plate and the second concrete plate is ensured.
In order to further ensure that the connecting piece has enough running space in the guide groove in the second concrete plate, the distance between the second positioning hole 15 and the right end face of the connecting piece 10 is smaller than or equal to the distance between the second pin hole 19 and the right end face of the guide groove 16 in the second concrete plate 12.
As a further preferable scheme, the left side end face of the guide groove 16 of the first concrete plate 11 is provided with a blind hole for installing a spring 17, one end of the spring 17 is fixed on the left side end face of the blind hole, and the spring is conveniently installed and guided by the blind hole. In addition, the movable end of the spring can be fixed at the left end of the connecting piece, so that a certain compression amount is ensured when the connecting piece slides into the guide groove of the second concrete plate.
Referring to fig. 5 and 6, the second connection structure is constructed by the following steps:
the connecting piece 10 is fixed in a blind hole on the left side end face of a guide groove 16 of a first concrete plate 11 in advance, the connecting pin 13 passes through a first pin hole 18 of the first concrete plate 11 and a first positioning hole 14 on the connecting piece 10, and the spring 17 is compressed on the left side end face of the guide groove 16 of the first concrete plate 11.
After the first concrete plate 11 and the second concrete plate 12 are settled, the connecting pin 13 is pulled out, and the connecting piece 10 is bounced into the guide groove 16 of the second concrete plate 12 along the guide groove 16 of the first concrete plate 11 under the action of the spring 17.
And (III) inserting the connecting pin 13 into the second pin hole 19 of the second concrete plate 12 and the second positioning hole 15 of the connecting piece 10 in the guide groove 16 thereof, and primarily connecting and fixing the connecting piece 10 and the second concrete plate 12.
And (IV) pouring concrete into the guide groove 16 of the first concrete plate 11 by using the first pin hole 18 of the first concrete plate 11 as a pouring gate, and fixedly connecting the first concrete plate 11 and the second concrete plate 12 into a whole to finish the integral forming of the fabricated concrete plate.
The connecting structure II obtained by the construction method belongs to a dry-wet hybrid connecting node, has the characteristics of dry connection and wet connection, and is simple in structure, convenient and fast to construct, low in cost, high in crack resistance and integrity, capable of well dissipating energy due to solidification under the action of an earthquake, and good in ductility of the connecting node.
Compared with the prior art, the construction method of the fabricated concrete slab provided by the invention has the following advantages:
1. the road traffic can be recovered in a short period after the construction is started, and the influence on the traffic condition is small.
2. The invention adopts the precast concrete plate, avoids the manufacturing construction of the concrete plate in the underground environment, can greatly improve the quality of the structural bottom plate, can save the underground construction time and shorten the construction period.
3. The invention adopts the laser deviation measuring process and has the advantages of high accuracy, simple design, convenient operation, high economic benefit and the like.
4. Because the steel plate as the connecting piece is positioned between the adjacent concrete plates, the node of the adjacent concrete plates does not have the stress concentration condition.
5. The invention has convenient and fast installation and beautiful appearance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method of constructing a fabricated concrete panel, comprising the steps of:
geological survey and concrete slab prefabrication:
surveying and processing geological conditions, prefabricating a plurality of concrete plates on the top of a support pile after completing the construction of a building enclosure and the support pile in advance, and recovering road traffic; a central through hole of each concrete plate penetrates through a supporting pile column for supporting an underground space structure, and the supporting pile column is in clearance fit with the through hole;
(II) concrete plate settlement construction: a soil taking port is formed in the edge of the concrete slab, and soil is taken from the lower side of the concrete slab through the soil taking port, so that the plurality of concrete slabs sink by self weight;
(III) deviation measurement and correction of the concrete slab: measuring the concrete plates in the sedimentation process by using a deviation measuring device, so that a plurality of concrete plates synchronously sink;
and (IV) connecting and fixing the plurality of concrete plates to form the fabricated concrete plate.
2. A method of constructing a fabricated concrete panel according to claim 1 wherein: the step (three) comprises the following two steps,
1) concrete slab deflection measurement: the deviation measuring device comprises a plurality of photosensitive sensors which are connected with a terminal computer and are arranged from bottom to top along the height direction of a supporting pile, laser emitters for emitting laser to the photosensitive sensors are arranged at four corners of the upper surface of the concrete slab, and the inclination direction and the deviation of the concrete slab in the sinking process are judged according to data detected by the photosensitive sensors;
2) correcting the concrete slab: according to the inclination direction and the deviation of the concrete slabs, soil is correspondingly taken below the concrete slabs, so that the concrete slabs synchronously keep horizontal sinking.
3. A method of constructing a fabricated concrete panel according to claim 1 wherein: in the step (IV), after the concrete slab at the edge is settled in place, the concrete slab is fixedly connected with the side wall through the first connecting structure.
4. A method of constructing a fabricated concrete panel according to claim 3 wherein: the first connecting structure comprises a bracket horizontally arranged on the side surface of the side wall and a flange plate arranged on the matching surface of the concrete plate and the side wall, and the concrete plate and the flange plate on the side wall are fixedly connected through bolts.
5. A method of constructing a fabricated concrete panel according to claim 4 wherein: the upper surface of the exposed bracket is provided with a limiting block, the lower surface of the concrete plate is provided with a limiting hole corresponding to the limiting block, and the limiting block is used for positioning the relative positions of the flange plate on the concrete plate and the flange plate on the side wall.
6. A method of constructing a fabricated concrete panel according to any one of claims 1 to 5 wherein: in the step (IV), the adjacent concrete plates are fixedly connected through a second connecting structure, the second connecting structure comprises a connecting piece and a connecting pin, the connecting piece is horizontally arranged between the two adjacent concrete plates, and the connecting piece is provided with a first positioning hole and a second positioning hole which are used for being matched with the connecting pin in parallel; the two adjacent concrete plates are respectively a first concrete plate and a second concrete plate, the matching surfaces of the first concrete plate and the second concrete plate are respectively provided with a horizontal guide groove for accommodating the connecting piece, and the left side end face of the guide groove of the first concrete plate is provided with a spring; the side surface of the guide groove of the first concrete plate vertically penetrates through a first pin hole matched with the connecting pin, before the first concrete plate is connected with a second concrete plate, the first pin hole corresponds to the first positioning hole, and the side surface of the guide groove of the second concrete plate vertically penetrates through a second pin hole matched with the connecting pin; after the first concrete plate and the second concrete plate are connected, the second pin hole corresponds to the second positioning hole; the length of the connecting piece is greater than that of the guide groove in the second concrete plate; and the connecting pin penetrates through the second pin hole and a second positioning hole in the connecting piece, and concrete is cast in situ in the guide groove and the first pin hole of the first concrete slab.
7. A method of constructing a fabricated concrete panel according to claim 6 wherein: the middle part of connecting piece is equipped with spacing platform, first locating hole set up in the left side major diameter portion of spacing platform, the second locating hole set up in the right side minor diameter portion of spacing platform, the open end of guide way in the first concrete slab be equipped with spacing platform complex step, the diameter of guide way opening part diameter and the second concrete slab interior guide way of first concrete slab with the right side minor diameter portion diameter of connecting piece is the same.
8. A method of constructing a fabricated concrete panel according to claim 7 wherein: the distance between the second positioning hole and the right end face of the connecting piece is smaller than or equal to the distance between the second pin hole and the right end face of the guide groove in the second concrete plate.
9. A method of constructing a fabricated concrete panel according to claim 6 wherein: the left side end face of the guide groove of the first concrete slab is provided with a blind hole for mounting a spring, and one end of the spring is fixed on the left side end face of the blind hole.
10. A method of constructing a fabricated concrete panel according to claim 6 wherein: the second connecting structure is constructed by the steps of placing a connecting piece on the left end face of the guide groove of the first concrete plate, penetrating a connecting pin through a first pin hole of the first concrete plate and a first positioning hole on the connecting piece, and compressing a spring on the left end face of the guide groove of the first concrete plate;
after the first concrete plate and the second concrete plate are settled in place, the connecting pin is pulled out, and the connecting piece is bounced into the guide groove of the second concrete plate along the guide groove of the first concrete plate under the action of the spring;
inserting a connecting pin into a second pin hole of a second concrete plate and a second positioning hole of a connecting piece in a guide groove of the second pin hole, and connecting and fixing the connecting piece and the second concrete plate;
the first concrete plate and the second concrete plate are connected integrally by pouring concrete into the guide groove of the first concrete plate with the first pin hole of the first concrete plate as a pouring gate.
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| CN110792099A (en) * | 2019-08-22 | 2020-02-14 | 上海建工二建集团有限公司 | Plate lowering construction method for underground structure in reverse construction method |
| CN112282070A (en) * | 2020-11-27 | 2021-01-29 | 福建江夏学院 | Concrete assembled structure with high supporting strength |
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| US5199233A (en) * | 1990-05-23 | 1993-04-06 | Misawa Homes Co. Ltd. | Prefabricated concrete basement and process for constructing the same |
| CN202849893U (en) * | 2012-09-26 | 2013-04-03 | 朱毅 | Concrete slab pavement structure |
| CN105951880A (en) * | 2016-05-09 | 2016-09-21 | 江苏鸿基节能新技术股份有限公司 | Assembled underground structure of precast concrete planks and construction method thereof |
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