CN110847201A - Open caisson temporary outer wall system capable of being quickly assembled and disassembled and construction method thereof - Google Patents
Open caisson temporary outer wall system capable of being quickly assembled and disassembled and construction method thereof Download PDFInfo
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- CN110847201A CN110847201A CN201910994490.4A CN201910994490A CN110847201A CN 110847201 A CN110847201 A CN 110847201A CN 201910994490 A CN201910994490 A CN 201910994490A CN 110847201 A CN110847201 A CN 110847201A
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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Abstract
The invention discloses a sinking well temporary outer wall system capable of being quickly assembled and disassembled, which is connected with a step of a step type sinking well foundation and comprises the following components: a steel outer wall structure; the fastening and separating device is positioned at the bottom of the steel outer wall structure and can be fastened, sealed or separated from the open caisson contact surface; and the inner support system is positioned between the steel outer wall structure and the wall of the open caisson so as to provide lateral support for the steel outer wall structure. The invention has the advantages of good water stopping effect, strong structural stability, good soil and water retaining effect, convenient and quick installation and removal, little underwater operation, high safety, no occupation of large-scale hoisting equipment and full satisfaction of various requirements of step type open caisson construction.
Description
Technical Field
The invention relates to the field of bridge engineering foundation construction. More particularly, the present invention relates to a temporary external wall system of an open caisson which can be quickly assembled and disassembled and a construction method thereof.
Background
Along with the soaring of economic strength of China and the continuous improvement of the level of bridge construction, the construction of a large-span bridge becomes a trend, and the open caisson foundation has the advantages of high bearing capacity, good integrity, high rigidity and wide applicable geological conditions, and is widely applied to the construction of the large-span bridge foundation. Under the condition that the water depth is large and the open caisson size is large, local scouring is easy to occur around the pier foundation structure, the stability and safety of bridge engineering are affected, and in order to reduce the dead weight of the open caisson structure and reduce the scouring depth, the open caisson structure is suitable to adopt a step-shaped structural form. During step type open caisson foundation construction, because the wall of a well of open caisson structure outermost side is lower, need external interim outer wall, be used for retaining soil at the open caisson sinking stage, be used for manger plate when subsequent cushion cap pier shaft is under construction. The step open caisson foundation in the deep water area is a novel structural style, the construction experience in the field is few at present, the design and the construction of the temporary outer wall of the open caisson are also in the blank stage, and the temporary outer wall needs to meet the following use requirements during the construction of the step open caisson:
1) the connection between the open caisson and the temporary outer wall needs to be sealed and waterproof, and is convenient for subsequent dismantling; because the connection position is under water, the connection mode of welding and concrete pouring consolidation is not suitable.
2) The temporary outer wall needs to sink together with the open caisson and serve as a soil retaining structure, when soil taking is carried out in the open caisson to assist sinking, the temporary outer wall needs to be used for supporting soil taking equipment, and the requirements on rigidity and stability are high.
3) Because the plane size is large, the weight of the temporary outer wall is large, and the construction method of integral installation is not suitable due to the limitation of hoisting equipment.
The commonly used retaining and water retaining structure during the construction of the current bridge engineering foundation is a steel cofferdam structure, the steel cofferdam structure needs to be buried in a soil body or suspended and fixed on a pile foundation to form a stable structure, and water is stopped by pouring underwater bottom sealing concrete, so that the requirements of step open caisson construction can not be met obviously. Therefore, a temporary outer wall system of the open caisson capable of being quickly assembled and disassembled and a construction method thereof need to be developed, and the construction requirements of the step type open caisson foundation are met.
Disclosure of Invention
The invention aims to provide a sunk well temporary outer wall system capable of being quickly assembled and disassembled and a construction method thereof, which have the advantages of good water stopping effect, strong structural stability, good soil and water retaining effect, convenience and quickness in installation and disassembly, few underwater operation, high safety, no occupation of large-scale hoisting equipment and full satisfaction of various requirements of stepped sunk well construction.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a quick-detachable temporary external wall system of a caisson which is connected to a step of a stepped caisson foundation, comprising:
a steel outer wall structure;
the fastening and separating device is positioned at the bottom of the steel outer wall structure and can be fastened, sealed or separated from the open caisson contact surface;
and the inner support system is positioned between the steel outer wall structure and the wall of the open caisson so as to provide lateral support for the steel outer wall structure.
Preferably, the steel outer wall structure is a double-layer steel wall structure, the steel outer wall structure is divided into a plurality of steel wall body blocks in a vertical surface layering mode, and the steel wall body blocks are divided into a plurality of steel wall body standard blocks and steel wall body adjusting blocks in a plane layering mode;
the two adjacent steel wall body blocks are connected through a vertical connecting structure, the two adjacent steel wall body standard blocks are connected through a horizontal connecting structure, and the steel wall body standard blocks and the adjacent steel wall body regulating blocks are connected through a locking device to form a whole.
Preferably, the upper and lower opposite surfaces of the steel wall block are respectively provided with a first female joint and a first male joint which can be matched;
the vertical connection configuration includes: the first bracket, the first water stop rubber belt and the first connecting rod are arranged on the first bracket; first bracket welds on two-layer steel wall body block inner wall about adjacent, connects two-layer steel wall body block about will through first bracket locking connecting rod, and first stagnant water rubber area is arranged in between the adjacent steel wall body block about through the compression of stretch-draw connecting rod.
Preferably, the left side surface and the right side surface of the steel wall body standard block are respectively provided with a second female joint and a second male joint; the depth of the concave hole of the second female joint is larger than that of the convex head of the second male joint;
the horizontal connection configuration includes: a plurality of circular locking notches, locking notch connecting keys and a cohesive soil layer; the round locking notch is formed in the positions, close to the second female joint and the second male joint, of the two adjacent steel wall body standard blocks, the locking notch connecting key is sleeved into the round locking notch to horizontally connect and fix the two steel wall body standard blocks, and a viscous soil layer is filled in a rectangular groove formed between the second female joint and the second male joint.
Preferably, the steel wall body adjusting block is of a conical structure with a large upper part and a small lower part, and the steel wall body adjusting block and the adjacent steel wall body standard block are locked through a locking device;
the locking device includes: the mortar plugging layer, the water stop belt, the rope tying column and the steel wire rope; the mortar shutoff layer is located steel wall body regulating block bottom, and the waterstop is located steel wall body regulating block both sides, and the rope tying post is fixed in on two adjacent steel wall body standard blocks with the steel wall body regulating block, wire rope alternately walks around and draws steel wall regulating block top tightening locking behind the rope tying post.
Preferably, the fastening and detaching device comprises a fastening member and a detaching member;
the fastener includes: the anti-shearing device comprises an anti-shearing block, a hook, a water-stopping rubber strip, a hanging rod and a hanging ring; the shear resistant blocks are fixed on the wall of the open caisson and positioned on two sides of the steel outer wall structure so as to limit the horizontal movement of the steel outer wall structure, the hook is fixed on the top surface of the open caisson, the water stop rubber strip is arranged at the bottom of the steel outer wall structure, the bottom end of the suspender is connected with the hook through a hanging ring, and the top end of the suspender is anchored above the steel outer wall structure;
the separator includes: the traction rope is connected with the lifting ring by bypassing the fixed pulley, and the free end of the traction rope extends upwards.
Preferably, the inner support system comprises: the device comprises a top layer supporting structure, a bottom layer supporting structure, rollers, a guide structure, a plurality of open caisson extending brackets and a limiting device;
the top layer supporting structure and the bottom layer supporting structure are both truss structures, one end of each truss structure is fixed with the steel outer wall structure, and the other end of each truss structure is connected with a roller wheel to be supported on the side face of the well wall of the open caisson; the guiding structure and the extended bracket of the open caisson are welded or embedded on the side surface of the well wall of the open caisson, the top layer supporting structure is welded with the extended bracket of the open caisson, and the bottom layer supporting structure is connected with the extended bracket of the open caisson through a limiting device.
Preferably, the position limiting device includes: the device comprises a fixed wedge-shaped block, a bracket extending outwards from a support structure, a free wedge-shaped block, a steel pipe and a pull rod;
the fixed wedge welding is on the overhanging bracket of open caisson, the overhanging bracket welding of bearing structure is on bottom bearing structure, free wedge is located between the overhanging bracket of fixed wedge and bearing structure, the inclined plane that fixed wedge and free wedge are relative is for matcing each other, the steel pipe welding is at the top surface of free wedge to upwards stretch out the surface of water, it is fixed through the stretch-draw pull rod between free wedge and the fixed wedge.
The invention also provides a construction method by utilizing the open caisson temporary outer wall system capable of being quickly assembled and disassembled, which comprises the following steps:
step one, mounting a steel outer wall structure of a bottom section and a bottom layer supporting structure on the open caisson, and synchronously mounting a fastening and separating device at the bottom of the steel outer wall structure;
secondly, sinking the steel outer wall structure of the bottom section to a preset position along with the open caisson;
thirdly, soil taking equipment is installed above the wall of the open caisson and the steel outer wall structure of the bottom section, and soil taking is carried out in the open caisson to assist sinking;
step four, connecting a high open caisson, synchronously connecting a high steel outer wall structure, and installing a top layer supporting structure along with the steel outer wall structure of the top section;
fifthly, completing open caisson construction, and pumping water to carry out bearing platform construction;
preferably, the method further comprises the following steps:
step six, after the construction of the bearing platform is completed, cutting off welding seams between the top layer supporting structure and the outer extending bracket of the open caisson, removing a limiting device between the bottom layer supporting structure and the outer extending bracket of the open caisson, removing the connection between the inner supporting system and the wall of the open caisson, separating the bottom of the steel outer wall structure from the open caisson through a fastening and separating device, and dismantling the outer wall system in layers;
and seventhly, loosening the steel wire rope, removing the locking device between the steel wall standard block and the steel wall body adjusting block, removing the steel wall body adjusting block, sequentially removing the vertical connecting structure and the horizontal connecting structure between the steel wall body standard blocks, and removing the steel wall body standard blocks layer by layer.
The invention at least comprises the following beneficial effects:
1. the temporary outer wall system of the open caisson adopts an assembled structural form, is hoisted in a layered and partitioned mode, and has low requirements on hoisting equipment.
2. The temporary outer wall system of the open caisson can adapt to larger installation errors in the construction process by adopting the adjusting blocks, and the construction is rapid.
3. The horizontal connection structure between the steel wall body blocks in the temporary outer wall system of the open caisson adopts an inserted locking notch connection device, and the installation and the removal are convenient and quick.
4. When the temporary outer wall system of the open caisson is installed, the steel wall body blocks can be quickly and accurately installed by utilizing the rollers connected with the inner supports and the guide structure on the wall of the open caisson.
5. The temporary outer wall system of the open caisson is simple and effective in connection with the open caisson, good in water stopping effect and free of underwater operation.
6. The welding and cutting workload is very little in the installation and dismantling process of the open caisson temporary outer wall system, underwater cutting is not needed, and the open caisson temporary outer wall system is safe and reliable.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a vertical layout view of a temporary external wall system of an open caisson;
fig. 2 is a plan layout view of the open caisson temporary external wall system;
FIG. 3 is a schematic view of the vertical connection between the upper and lower steel wall blocks;
FIG. 4 is a schematic view of the horizontal connection between adjacent steel wall blocks;
FIG. 5 is a schematic elevation view of the connection between the steel wall standard block and the steel wall adjusting block through the locking device;
FIG. 6 is a schematic plan view of the connection between the steel wall standard block and the steel wall adjusting block through the locking device;
FIG. 7 is a schematic view of the tight seal between the bottom of the steel outer wall structure and the open caisson;
FIG. 8 is a schematic diagram showing the separation between the bottom of the steel outer wall structure and the open caisson;
FIG. 9 is a schematic view of the general arrangement of the internal support system;
FIG. 10 is a schematic plan view of the connection between the top support structure and the open caisson;
FIG. 11 is a schematic plan view of the connection between the bottom support structure and the open caisson;
FIG. 12 is a schematic elevation view of the connection between the underlying support structure and the open caisson;
fig. 13 is a schematic plan view of a structural assembly block of the open caisson temporary external wall system;
fig. 14 is a schematic view of the temporary external wall system of the open caisson for soil taking and sinking in the open caisson;
FIG. 15 is a schematic view of the temporary outer wall system of the open caisson used for bearing platform construction;
FIG. 16 is a schematic view of the temporary external wall system of the open caisson being disassembled in layers;
fig. 17 is a schematic block-dismantling diagram of the open caisson temporary external wall system;
FIG. 18 is a side view of the A-A fastening release device of FIG. 7;
FIG. 19 is a schematic view of the attachment of the top end of the hanger bar to the steel outer wall structure in the fastener;
fig. 20 is a schematic view of the plane B-B in fig. 19.
1 steel outer wall structure, 2 vertical connection structure, 21 first bracket, 22 first water stop rubber belt, 23 first connecting rod, 3 horizontal connection structure, 31 circular locking notch, 32 locking notch connection key, 33 cohesive soil layer, 4 locking device, 41 mortar plugging layer, 42 water stop belt, 43 rope tying column, 44 steel wire rope, 5 fastening and separating device, 51 shear block, 52 hook, 53 water stop rubber strip, 54 suspender, 55 hoisting ring, 56 fixed pulley, 57 hauling rope, 58 backing plate, 59 stiffening plate, 6 inner support system, 61 top layer support structure, 62 bottom layer support structure, 63 idler wheel, 64 guide structure, 65 sunk well overhanging bracket, 7 limiting device, 71 fixed wedge block, 72 support structure overhanging bracket, 73 free block, 74 steel pipe, 75 pull rod, 8 second female joint, 9 sunk well, 10 second male joint, 11 steel wall body standard block, 12 steel wall body adjusting block, 13 first female joint, 14 first male connector, 15 third male connector.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention 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 thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 2, the present invention provides a temporary external wall system of an open caisson 9 capable of being quickly assembled and disassembled, which is connected to a step of a step-type open caisson 9 foundation, can be sunk together with the open caisson 9 and used as a soil retaining structure, can be used as a bearing structure of a soil sampling device when sampling soil in the open caisson 9, and can be used as a water retaining structure when constructing a subsequent substructure, the temporary external wall system of the open caisson 9 comprises:
the steel outer wall structure 1 is used for retaining soil and water;
the fastening and separating device 5 is positioned at the bottom of the steel outer wall structure 1 and can be tightly sealed or separated from the contact surface of the open caisson 9;
and the inner support system 6 is positioned between the steel outer wall structure 1 and the wall of the open caisson 9 so as to provide lateral support for the steel outer wall structure 1 and improve the overall stability of the steel outer wall structure.
In the temporary outer wall system of open caisson 9 that can install and remove fast in the preferred embodiment of this application, as shown in fig. 1 ~ 2, steel outer wall structure 1 is double-deck steel wall structure, because the weight is bigger, needs the split blocking, steel outer wall structure 1 divide into a plurality of steel wall body blocks according to facade layering mode steel wall body block divides into a plurality of steel wall body standard blocks 11 and steel wall body regulating block 12 according to plane blocking mode, and steel wall body regulating block 12 is the wedge for regulating error in the work progress, it treats that adjacent steel wall body standard block 11 installation is accomplished and is adorned after again, and its preparation size is adjusted according to the installation error of adjacent steel wall body standard block 11, does not need to remove the steel wall body block of having installed and carries out position control, convenient and fast.
The two adjacent steel wall body blocks are connected through a vertical connecting structure 2, the two adjacent steel wall body standard blocks 11 are connected through a horizontal connecting structure 3, and the steel wall body standard blocks 11 and the adjacent steel wall body adjusting blocks 12 are connected through a locking device 4 to form a whole.
In a preferred embodiment of the temporary external wall system of the rapidly detachable open caisson 9 of the present application, as shown in fig. 3, the upper and lower opposite surfaces of the steel wall block are respectively provided with a first female joint 13 and a first male joint 14 which can be matched, so as to facilitate butt-joint installation;
the vertical connection structure 2 includes: a first bracket 21, a first water stop rubber belt 22 and a first connecting rod 23; first bracket 21 welds on two-layer steel wall body inner wall about adjacent, connects two-layer steel wall body piece about will through first bracket 21 locking connecting rod, and the connecting rod is the smart twisted steel that pricks, and first stagnant water rubber area 22 is arranged in between the adjacent steel wall body piece about through the compression of stretch-draw connecting rod, plays the effect of stagnant water.
In a preferred embodiment of the temporary external wall system of the rapidly detachable open caisson 9 of the present application, as shown in fig. 4, the left and right side surfaces of the standard block 11 of the steel wall body are respectively provided with a second female joint 8 and a second male joint 10, which are convenient for butt-joint installation; the depth of the concave hole of the second female joint 8 is larger than that of the convex head of the second male joint 10;
the horizontal connection structure 3 includes: a plurality of circular locking notches 31, locking notch connecting keys 32 and an adhesive soil layer 33; the circular locking notch 31 is arranged near the second female joint 8 and the second male joint 10 of the two adjacent steel wall body standard blocks 11, the locking notch connecting key is sleeved into the circular locking notch to horizontally connect and fix the two steel wall body standard blocks 11, and a rectangular groove formed between the second female joint 8 and the second joint is filled with cohesive soil for water stop. The specific installation method comprises the following steps: after the second male connector 10 on the steel wall body standard block 11 to be installed is inserted into the second female connector 8 on the installed steel wall body standard block 11, the locking connection key 32 is sleeved from the upper side of the circular locking opening 31 to horizontally connect and fix the two steel wall body standard blocks 11, and a viscous soil layer 33 is filled in a rectangular groove formed by the second female connector 8 and the second male connector 10 to stop water.
In a preferred embodiment of the temporary external wall system of the open caisson 9 capable of being quickly assembled and disassembled, as shown in fig. 5 to 6, the steel wall body adjusting block 12 is of a tapered structure with a large top and a small bottom, the steel wall body adjusting block 12 and the adjacent steel wall body standard block 11 are locked through the locking device 4, the left side and the right side of the steel wall body adjusting block 12 are provided with third male connectors 15, and the third male connectors 15 are matched with the second female connectors 8 on the adjacent steel wall body standard block 11, so that butt joint installation is facilitated;
the locking device 4 comprises: a mortar plugging layer 41, an omega-shaped water stop 42, a rope tying column 43 and a steel wire rope 44; the mortar plugging layer 41 is located at the bottom of the steel wall body adjusting block 12 and used for plugging a gap between the steel wall body adjusting block 12 and the open caisson 9, the omega-shaped water stop belts 42 are located on two sides of the steel wall body adjusting block 12, the rope tying columns 43 are fixed on two steel wall body standard blocks 11 adjacent to the steel wall body adjusting block 12, and the steel wire ropes 44 are guided to the upper portion of the steel wall body adjusting block to be tightened and locked after bypassing the rope tying columns 43 in a crossed mode. The steel wire rope 44 is tightened by the winch, the omega-shaped water stop 42 is compressed, the steel wall body adjusting block 12 is tightly attached to the adjacent steel wall body standard block 11 to prevent water leakage, and then the end part of the steel wire rope 44 is locked.
In a preferred embodiment of the temporary external wall system of the rapidly detachable open caisson 9 of the present application, as shown in fig. 7 to 8 and 18 to 20, the fastening and separating device 5 comprises a fastening member and a separating member;
the fastener includes: the anti-shearing device comprises a shear block 51, a hook 52, a water-stopping rubber strip 53, a suspender 54 (the suspender 54 is made of fine-rolled deformed steel) and a hanging ring 55; shear block 51 is fixed in on the open caisson 9 wall of a well, and is located steel outer wall structure 1 both sides to restriction steel outer wall structure 1's horizontal migration, couple 52 is fixed in open caisson 9 top surface, and stagnant water rubber strip 53 arranges steel outer wall structure 1's bottom in, and jib 54 bottom is passed through rings 55 and is connected with couple 52, jib 54 top is passed through backing plate 58 anchor in steel outer wall structure 1 top, the below of backing plate is strengthened even through stiffening plate 59, and stiffening plate 59 is fixed in on steel outer wall structure 1, and it is shown with reference to figure 7, compresses stagnant water rubber strip 53 through stretch-draw jib 54, realizes the sealed and waterproof of steel outer wall structure 1 and open caisson 9 contact surface.
The separator includes: the fixed pulley 56 and the hauling rope 57, the hauling rope 57 is connected with the hanging ring 55 by bypassing the fixed pulley 56, the free end of the hauling rope 57 extends upwards, the free end of the hauling rope 57 is pulled, the hanging ring 55 is separated from the hook 52, and the separation of the bottom of the steel outer wall structure 1 and the open caisson 9 can be realized.
In a preferred embodiment of the temporary external wall system of the present application, as shown in fig. 9 to 10, the inner support system 6 includes: the device comprises a top layer supporting structure 61, a bottom layer supporting structure 62, rollers 63, a guide structure 64, a plurality of brackets 65 extending outwards from the open caisson 9 and a limiting device 7;
as shown in fig. 10, the top supporting structure 61 and the bottom supporting structure 62 are both truss structures formed by welding steel pipes 74, one end of each truss structure is fixedly welded with the steel outer wall structure 1, and the other end of each truss structure is connected with a roller 63 and supported on the side surface of the well wall of the open caisson 9; the guide structure 64 and the outrigger 65 of the open caisson 9 are welded or embedded on the side surface of the well wall of the open caisson 9, the steel wall blocks can be quickly positioned and installed through the rollers 63 and the guide structure 64, the top of the top layer support structure 61 is positioned above the water surface and is welded with the outrigger 65 of the open caisson 9, and the bottom layer support structure 62 is positioned below the water surface and is connected with the outrigger 65 of the open caisson 9 through the limiting device 7.
In a preferred embodiment of the temporary external wall system of the present application for a quickly detachable open caisson 9, as shown in fig. 11 to 12, the limiting device 7 comprises: the support structure comprises a fixed wedge block 71, a bracket 72 extending outwards from the support structure, a free wedge block 73, a steel pipe 74 and a pull rod 75;
fixed wedge 71 welds on the overhanging bracket 65 of open caisson 9, the overhanging bracket 72 of bearing structure welds on bottom bearing structure 62, free wedge 73 is located between the overhanging bracket 72 of fixed wedge 71 and bearing structure, the relative face of fixed wedge 71 and free wedge 73 is the inclined plane that matches each other, steel pipe 74 welds the top surface at free wedge 73 to upwards stretch out the surface of water, it is fixed through stretch-draw pull rod 75 between free wedge 73 and the fixed wedge 71.
When the bottom layer supporting structure 62 is installed, the free wedge blocks 73 are inserted between the fixed wedge blocks 71 and the brackets 72 extending out of the supporting structure, the pull rods 75 are tensioned to clamp the fixed wedge blocks 71 and the free wedge blocks 73, so that the lateral movement of the bottom layer supporting structure 62 is limited, when the bottom layer supporting structure 62 is dismantled, the pull rods 75 are loosened, the steel pipes 74 are lifted upwards, the free wedge blocks 73 are separated from the fixed wedge blocks 71, and the connection between the bottom layer supporting structure 62 and the open caisson 9 can be released.
The invention also provides a construction method by utilizing the temporary outer wall system of the open caisson 9 capable of being quickly assembled and disassembled, which comprises the following steps:
the method comprises the following steps: referring to fig. 13, steel wall blocks are manufactured in a factory in a divided manner, and corresponding support structures are welded to the steel wall blocks integrally;
step two, referring to fig. 14, mounting the steel outer wall structure 1 of the bottom section and the bottom layer supporting structure 62 on the open caisson 9, and synchronously mounting the fastening and separating device 5 at the bottom of the steel outer wall structure 1;
step three, referring to fig. 14, sinking the steel outer wall structure 1 of the bottom section to a preset position along with the open caisson 9;
step four, referring to fig. 14, installing soil taking equipment above the well wall of the open caisson 9 and the steel outer wall structure 1 of the bottom section, and taking soil inside the open caisson 9 to assist sinking;
step five, referring to fig. 15, connecting the high open caisson 9, synchronously connecting the high steel outer wall structure 1, and installing the top layer supporting structure 61 along with the steel outer wall structure 1 of the top section;
sixthly, referring to fig. 15, completing the construction of the open caisson 9, and pumping water to carry out bearing platform construction;
seventhly, referring to fig. 16, after the construction of the bearing platform is completed, cutting off welding seams between the top layer supporting structure 61 and the extended bracket 65 of the open caisson 9, removing the limiting device 7 between the bottom layer supporting structure 62 and the extended bracket 65 of the open caisson 9, removing the connection between the inner support system 6 and the wall of the open caisson 9, separating the bottom of the steel outer wall structure 1 from the open caisson 9 through the fastening and separating device 5, and dismantling the outer wall system in a layered manner;
step eight, referring to fig. 17, loosening the steel wire rope 44, removing the locking device 4 between the steel wall standard block and the steel wall body adjusting block 12, removing the steel wall body adjusting block 12, sequentially removing the vertical connecting structure 2 and the horizontal connecting structure 3 between the steel wall body standard blocks 11, and removing the steel wall body standard blocks 11 layer by layer.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a temporary outer wall system of open caisson that can install and remove fast links to each other with the step department on step type open caisson basis, its characterized in that includes:
a steel outer wall structure;
the fastening and separating device is positioned at the bottom of the steel outer wall structure and can be fastened, sealed or separated from the open caisson contact surface;
and the inner support system is positioned between the steel outer wall structure and the wall of the open caisson so as to provide lateral support for the steel outer wall structure.
2. A rapid detachable open caisson temporary exterior wall system according to claim 1, wherein the steel exterior wall structure is a double-layer steel wall structure, the steel exterior wall structure is divided into a plurality of steel wall blocks in a vertical layered manner, and the steel wall blocks are divided into a plurality of steel wall standard blocks and steel wall adjusting blocks in a planar segmented manner;
the two adjacent steel wall body blocks are connected through a vertical connecting structure, the two adjacent steel wall body standard blocks are connected through a horizontal connecting structure, and the steel wall body standard blocks and the adjacent steel wall body regulating blocks are connected through a locking device to form a whole.
3. A rapid detachable open caisson temporary external wall system according to claim 2, wherein the upper and lower opposite faces of the steel wall block are respectively provided with a first female joint and a first male joint which can be matched;
the vertical connection configuration includes: the bracket, the first water stop rubber belt and the first connecting rod are arranged on the bracket; the bracket is welded on the inner walls of the upper and lower adjacent steel wall body blocks, the upper and lower steel wall body blocks are connected through the bracket locking connecting rod, and the first water stop rubber belt is compressed through the tensioning connecting rod and is arranged between the upper and lower adjacent steel wall body blocks.
4. A rapid detachable open caisson temporary external wall system according to claim 2, wherein the left and right side surfaces of the steel wall body standard block are respectively provided with a second female joint and a second male joint; the depth of the concave hole of the second female joint is larger than that of the convex head of the second male joint;
the horizontal connection configuration includes: a plurality of circular locking notches, locking notch connecting keys and a cohesive soil layer; the round locking notch is formed in the positions, close to the second female joint and the second male joint, of the two adjacent steel wall body standard blocks, the locking notch connecting key is sleeved into the round locking notch to horizontally connect and fix the two steel wall body standard blocks, and a viscous soil layer is filled in a rectangular groove formed between the second female joint and the second male joint.
5. A rapid detachable temporary external wall system of open caisson according to claim 2, wherein the steel wall body adjusting block is in a tapered structure with a big top and a small bottom, and the steel wall body adjusting block and the adjacent steel wall body standard block are locked by a locking device;
the locking device includes: the mortar plugging layer, the water stop belt, the rope tying column and the steel wire rope; the mortar shutoff layer is located steel wall body regulating block bottom, and the waterstop is located steel wall body regulating block both sides, and the rope tying post is fixed in on two adjacent steel wall body standard blocks with the steel wall body regulating block, wire rope alternately walks around and draws steel wall regulating block top tightening locking behind the rope tying post.
6. The quick detachable temporary external wall system of open caisson according to claim 1 or 2, wherein said fastening and separating means comprises a fastening member and a separating member;
the fastener includes: the anti-shearing device comprises an anti-shearing block, a hook, a water-stopping rubber strip, a hanging rod and a hanging ring; the shear resistant blocks are fixed on the wall of the open caisson and positioned on two sides of the steel outer wall structure so as to limit the horizontal movement of the steel outer wall structure, the hook is fixed on the top surface of the open caisson, the water stop rubber strip is arranged at the bottom of the steel outer wall structure, the bottom end of the suspender is connected with the hook through a hanging ring, and the top end of the suspender is anchored above the steel outer wall structure;
the separator includes: the traction rope is connected with the lifting ring by bypassing the fixed pulley, and the free end of the traction rope extends upwards.
7. A quick disconnect temporary open caisson exterior wall system of claim 1, wherein said internal support system comprises: the device comprises a top layer supporting structure, a bottom layer supporting structure, rollers, a guide structure, a plurality of open caisson extending brackets and a limiting device;
the top layer supporting structure and the bottom layer supporting structure are both truss structures, one end of each truss structure is fixed with the steel outer wall structure, and the other end of each truss structure is connected with a roller wheel to be supported on the side face of the well wall of the open caisson; the guiding structure and the extended bracket of the open caisson are welded or embedded on the side surface of the well wall of the open caisson, the top layer supporting structure is welded with the extended bracket of the open caisson, and the bottom layer supporting structure is connected with the extended bracket of the open caisson through a limiting device.
8. A quick disconnect temporary caisson exterior wall system of claim 7, wherein said stop means comprises: the device comprises a fixed wedge-shaped block, a bracket extending outwards from a support structure, a free wedge-shaped block, a steel pipe and a pull rod;
the fixed wedge welding is on the overhanging bracket of open caisson, the overhanging bracket welding of bearing structure is on bottom bearing structure, free wedge is located between the overhanging bracket of fixed wedge and bearing structure, the inclined plane that fixed wedge and free wedge are relative is for matcing each other, the steel pipe welding is at the top surface of free wedge, and is fixed through the stretch-draw pull rod between free wedge and the fixed wedge.
9. A construction method using a rapid detachable open caisson temporary outer wall system is characterized by comprising the following steps:
step one, mounting a steel outer wall structure of a bottom section and a bottom layer supporting structure on the open caisson, and synchronously mounting a fastening and separating device at the bottom of the steel outer wall structure;
secondly, sinking the steel outer wall structure of the bottom section to a preset position along with the open caisson;
thirdly, soil taking equipment is installed above the wall of the open caisson and the steel outer wall structure of the bottom section, and soil taking is carried out in the open caisson to assist sinking;
step four, connecting a high open caisson, synchronously connecting a high steel outer wall structure, and installing a top layer supporting structure along with the steel outer wall structure of the top section;
and fifthly, completing open caisson construction, and pumping water to carry out bearing platform construction.
10. A quick disconnect temporary caisson exterior wall system of claim 9, further comprising:
step six, after the construction of the bearing platform is completed, cutting off welding seams between the top layer supporting structure and the outer extending bracket of the open caisson, removing a limiting device between the bottom layer supporting structure and the outer extending bracket of the open caisson, removing the connection between the inner supporting system and the wall of the open caisson, separating the bottom of the steel outer wall structure from the open caisson through a fastening and separating device, and dismantling the outer wall system in layers;
and seventhly, loosening the steel wire rope, removing the locking device between the steel wall standard block and the steel wall body adjusting block, removing the steel wall body adjusting block, sequentially removing the vertical connecting structure and the horizontal connecting structure between the steel wall body standard blocks, and removing the steel wall body standard blocks layer by layer.
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