CN102808415B - Foundation pit supporting structure of underground continuous wall and construction method for foundation pit supporting structure - Google Patents
Foundation pit supporting structure of underground continuous wall and construction method for foundation pit supporting structure Download PDFInfo
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- CN102808415B CN102808415B CN201210258310.4A CN201210258310A CN102808415B CN 102808415 B CN102808415 B CN 102808415B CN 201210258310 A CN201210258310 A CN 201210258310A CN 102808415 B CN102808415 B CN 102808415B
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Abstract
The invention discloses a foundation pit supporting structure of an underground continuous wall. Two wing plates made of I-shaped profile steel are welded into a steel plate post, the length of the steel plate post is the sum of the design depth of the underground continuous wall and the length of an extended part, a hole is drilled at each of two ends of a unit groove section, the extended parts of the two steel plate posts are arranged in the drilled holes and fixed by pouring concrete, a protecting wall is arranged on each of two sides of the unit groove section, the steel plate posts and the protecting walls are wedged by using wood wedges, two ends of two steel channels are covered on the steel plate posts, a steel bar cage is put into the unit groove section, and two joint boxes are respectively put between the two wing plates outside the two steel plate posts. The concrete is poured into the steel plate posts and the unit groove section till the ground height; and after the concrete is solidified, the wood wedges, the steel channels and the joint boxes are removed, so that the foundation pit supporting structure of the underground continuous wall is formed.
Description
Technical field
The present invention relates to a kind of construction method of foundation pit supporting construction, be specifically made up of the unit groove section between two metal sheet pile joints and metal sheet pile joint exactly, the foundation pit supporting construction of a kind of diaphragm wall (hereinafter referred to as ground-connecting-wall) of rods arranged in horizontal line and construction method thereof.
Background technology
In order to ensure the safety of the smooth construction of foundation ditch and periphery underground installation, building, usually between foundation ditch and foundation pit side-wall, arrange supporting and protection structure, foundation pit supporting construction has various ways.Ground-connecting-wall is a kind of foundation pit supporting construction, more and more applied in base pit engineering at present, because ground-connecting-wall can not only complete the traditional function of foundation pit supporting construction---stop the soil outside foundation pit side-wall to move in foundation ditch as soil-baffling structure, prevent the water outside foundation pit side-wall from flowing into foundation ditch as water-stop curtain, and ground-connecting-wall can as skin, carrying vertical force.
Ground-connecting-wall is made up of the joint between unit groove section, unit groove section.During ground-connecting-wall construction, first use groover, adopt mud off, excavate out the unit groove section with certain depth and width, reinforcing cage is placed in unit groove section, then concreting, connects into horizontal-extending, continuous print ground-connecting-wall by the unit groove section that several are made up of reinforcing cage and concrete by joint.
Along with the development of urban construction, the degree of depth of foundation ditch is increasing, and cause the degree of depth as the ground-connecting-wall of one of foundation pit supporting construction also increasing, the degree of depth of some ground-connecting-walls has exceeded 60m.The increase of the ground-connecting-wall degree of depth can cause following problem: (1) causes the increase of the reinforcing cage degree of depth, and the increase of the reinforcing cage degree of depth can cause the increase of bar material cost; (2) increase of the reinforcing cage degree of depth causes the increase of reinforcing cage weight, thus adds cost and the danger of install reinforcing cage in unit groove section; (3) increase of the reinforcing cage degree of depth, the degree of depth also corresponding increase of unit groove section two cell wall, when transferring reinforcing cage, the possibility occurred because the injustice of unit groove section two cell wall causes reinforcing cage to transfer also increases, and not only can slow down speed of application, and can strengthen construction cost.
In order to ensure the safety of foundation ditch itself, foundation ditch periphery underground installation and above ground structure, reduce the cost of ground-connecting-wall material and install reinforcing cage, accelerate speed of application, reduce construction cost, be badly in need of solving the construction method of the foundation pit supporting construction of a kind of ground-connecting-wall of above-mentioned three problems, but there is no at present the foundation pit supporting construction of a kind of ground-connecting-wall that can solve above-mentioned three problems construction method.
Summary of the invention
Object of the present invention is intended to the increase of the increase of the increasing ground-connecting-wall material cost caused overcome along with the ground-connecting-wall degree of depth, the increase of install reinforcing cage cost, the slowing down of speed of application, construction cost, thus provides and to be a kind ofly made up of the unit groove section between two metal sheet pile joints and metal sheet pile joint, rods arranged in horizontal line, can to solve the construction method of the foundation pit supporting construction of a kind of ground-connecting-wall of above-mentioned three problems.
The object of the invention is to be achieved through the following technical solutions:
A kind of foundation pit supporting construction of diaphragm wall, it is characterized in that the wing plate 1 of this foundation pit supporting construction by I-shaped shaped steel, metal sheet pile 2, ground-connecting-wall projected depth 3, prolongation 4, circular hole 5, boring 6, unit groove section 7, revetment 8, timber wedge 9, channel-section steel 10, joint case 11 and reinforcing cage 12 formed, wherein I-shaped shaped steel has four blocks of wing plates 1, weld after two blocks, the right side wing plate 1 of one piece of I-shaped shaped steel is docked with two blocks of wing plates 1 on the left of the I-shaped shaped steel of another block and make metal sheet pile 2, the length of metal sheet pile 2 equals the length that ground-connecting-wall projected depth 3 adds prolongation 4, by the left side of metal sheet pile 2 prolongation 4, the each two blocks of wing plates 1 in the right cut away, in remaining metal sheet pile central authorities, tetragonal steel plate respectively bores a circular hole 5, 6 are holed respectively bottom the two ends of unit groove section 7, the prolongation 4 of two metal sheet piles 2 of above-mentioned cutting wing plate is inserted in boring 6 respectively, and to placing of concrete in boring 6, the two sides of unit groove section 7 are revetment 8, 9 wedgings of four pieces of timber wedge are used in space between revetment 8 in two sides and two metal sheet piles 2 at two ends respectively, be overlapped on two metal sheet piles 2 at unit groove section 7 two ends respectively with the two ends of two channel-section steels 10, two joint casees 11 are placed between two blocks of wing plates 1 outside two metal sheet piles 2 respectively, reinforcing cage 12 is put into unit groove section 7 between two channel-section steels 10, two metal sheet piles 2 and unit groove section 7 are reinforced concrete structure, when after concrete consolidation by timber wedge 9, channel-section steel 10 and joint case 11 take out, the foundation pit supporting construction of the diaphragm wall in first unit groove section 7 is made, the foundation pit supporting construction making the diaphragm wall of second unit groove section 7 is again linked by above-mentioned identical modular construction.
Described foundation pit supporting construction, it is characterized in that one piece of little steel disc is welded at the two ends of described channel-section steel 10 respectively, the little steel disc at two ends covers at the top of metal sheet pile 2.
The construction sequence realizing foundation pit supporting construction of the present invention is as follows:
1, smooth location, removes obstruction and underground utilities on the ground, keeps levelling of the land;
2, ground on the scene welds after two blocks, the right side of one piece of I-shaped shaped steel wing plate 1 is docked with two blocks, the left side wing plate 1 of the I-shaped shaped steel of another block, makes metal sheet pile 2, and makes the length of metal sheet pile 2 equal ground-connecting-wall projected depth 3+ prolongation 4;
3, prolongation 4 left side in metal sheet pile 2, each two blocks of wing plates 1 in the right are sliced off;
4, in the lower end of prolongation 4 four sides, the circular hole 5 of a diameter 0.3m is respectively opened with electronic puncher;
5, on the place of design cell groove section 7, the unit groove section 7 of rectangular shape is excavated with excavator, the degree of depth 1-2m of unit groove section 7, the bearing of trend of unit groove section 7 is parallel to the bearing of trend of ground-connecting-wall, the both sides of unit groove section 7 are the revetment 8 of reinforcing bar composition that gets up of construction concrete filling parcel colligation respectively, the effect of revetment 8 prevents shallow-layer place sand to the movement of unit groove section 7, the length of revetment 8 is the width of length+two metal sheet piles 2 in unit groove section 7 two ends of unit groove section 7, the degree of depth 1-2m of revetment 8, the width 0.1-0.25m of revetment 8, place sand is close in the outside of revetment 8,
6, groover is moved to the centre of unit groove section 7, dig downwards along revetment 8, calculate from Ground, the cutting depth of groover is to the projected depth 3 of ground-connecting-wall;
7, Spiral digging machine is moved to the left side of unit groove section 7, Spiral digging machine drill bit extend into ground-connecting-wall projected depth 3, rotary drill, boring 6 of spudding in, 6 diameters of holing >=metal sheet pile 2 catercorner length, and the degree of depth of boring 6 equals metal sheet pile prolongation 4;
8, Spiral digging machine is moved to the right side of unit groove section 7, Spiral digging machine drill bit extend into ground-connecting-wall projected depth 3, rotary drill, boring 6 of spudding in, 6 diameters of holing >=metal sheet pile 2 catercorner length, and the degree of depth of boring 6 equals metal sheet pile prolongation 4;
9, with crane, metal sheet pile 2 is hung in the boring 6 of unit groove section 7 left and right sides;
10, use timber wedge 9 by metal sheet pile 2 and revetment 8 wedging;
11, drawn top is embedding by unit groove section 7 two ends metal sheet pile 2 with channel-section steel 10, the little steel disc of the two ends welding of channel-section steel 10 covers on metal sheet pile 2;
12, toward concrete perfusion in metal sheet pile 2, then concrete is flow in the space between boring 6 and prolongation 4 by circular hole 5, is filled into top of concrete to prolongation 4 pushes up, like this bottom of metal sheet pile 2 is fixed;
13, etc., after the concrete initial set between boring 6 and prolongation 4 in space, in metal sheet pile 2, concrete perfusion is to Ground;
14, with crane along the space between unit groove section 7 liang of channel-section steels 10, reinforcing cage 12 is transferred to ground-connecting-wall projected depth 3, and between the two blocks of wing plates 1 reinforcing cage 12 2 end shape being reduced partly be stuck in metal sheet pile 2;
15, hanging joint case 11 with crane is put into outside metal sheet pile 2 and Site Soil, in space between two blocks of wing plates 1, ensure that joint case 11 top is Ground, prevention unit groove section 7 moves outside unit groove section 7;
16, with concrete filling parcel reinforcing cage 12, space between reinforcing cage 12 and metal sheet pile 2, and make concrete top to Ground;
17, with manually removing timber wedge 9, channel-section steel 10, the joint case 11 outside unit groove section 7 left and right sides metal sheet pile 2 and between Site Soil is removed with crane, joint case is put on place, with place sand fill up timber wedge 9, two channel-section steels 10, the space that stays of joint case 11.
Beneficial effect of the present invention
1, the inside concrete filling of metal sheet pile, adds the rigidity of metal sheet pile.Object rigidity is large, then object is not flexible.Therefore, decrease coupled together by concrete and metal sheet pile, the length of reinforcing cage in unit groove section, generally reduce 1/1 to two/3rd than the length of the reinforcing cage of conventional ground-connecting-wall.The minimizing of length of reinforcing cage, can reduce the material cost of ground-connecting-wall.
2, the reduction of length of reinforcing cage, decreases the weight of reinforcing cage, thus reduces the cost of install reinforcing cage in unit groove section.
3, the minimizing of length of reinforcing cage, the cell wall degree of depth of unit groove section also reduces, and when transferring reinforcing cage, the possibility occurred because the injustice of unit groove section two cell wall causes reinforcing cage to transfer also reduces, and can not only accelerate speed of application, and can reduce construction cost.
Accompanying drawing explanation
Fig. 1 is I-shaped shaped steel front view
Fig. 2 is I-shaped shaped steel top view
Fig. 3 is metal sheet pile top view
Fig. 4 is metal sheet pile panorama sketch
Fig. 5 is prolongation top and top view of holing after prolongation puts into boring
Fig. 6 is channel-section steel panorama sketch
Fig. 7 is supporting and protection structure ingredient top view before concrete perfusion
Fig. 8 is supporting and protection structure ingredient front view after concrete perfusion
Fig. 9 is supporting and protection structure ingredient top view after concrete perfusion
Reference numeral: 1-wing plate; 2-metal sheet pile; 3-ground-connecting-wall projected depth; 4-prolongation; 5-circular hole; 6-boring; 7-unit groove section; 8-revetment; 9-timber wedge; 10-channel-section steel; 11-joint case; 12-reinforcing cage.
Detailed description of the invention
Embodiment 1
The dark 12m of the west of a river, Nanjing foundation ditch, foundation ditch one length of side 7m.Ground is silty clay to below ground 4m, and below 4m is silt, and below ground 1.5m is phreatic surface.The outer 10m of foundation pit side-wall is Line of Nanjing Subway No. 2 lines.In order to ensure being perfectly safe of Line 2 Metro, the water and soil outside foundation ditch must be stoped to flow in foundation ditch, simultaneously in order to reduce construction investment, owner determines between foundation ditch and foundation pit side-wall, to arrange ground-connecting-wall, to play the multi-function action of ground-connecting-wall---and keep off soil, sealing, carry vertical force as the exterior wall of building.Ground-connecting-wall length 7m, degree of depth 12m, width 1m, be made up of a unit groove section 7 and two metal sheet pile 2 joints, unit groove section 7 length 6m, degree of depth 12m, width 1m, each metal sheet pile 2 is made up of the prolongation 4 of 12m ground-connecting-wall projected depth 3 and 12m, the length of the parallel ground-connecting-wall bearing of trend of metal sheet pile 2 is 0.5m, the width of the vertical ground-connecting-wall bearing of trend of metal sheet pile 2 is 0.9m, then a kind of foundation pit supporting construction of diaphragm wall is as follows.
Adopt the I-shaped shaped steel that Ma'anshan Iron and Steel Co., Ltd produces, the length of the I-shaped shaped steel of every block is 12m, respectively there are two blocks of wing plates left and right, in I-shaped molded breadth degree i.e. " work " word, " erecting " the end of a thread is to last 0.9m, every block wing plate 1 is 0.25m along the length of ground-connecting-wall bearing of trend, distance in " work " word about " erecting " line between two pieces of wing plate 1 outermost end is 0.5m, ground on the scene welds the end face of the bottom surface of first piece of I-shaped shaped steel and second piece of I-shaped shaped steel, with same method, the 3rd piece of I-shaped shaped steel and the 4th piece of I-shaped shaped steel are welded, thus form the I-shaped shaped steel of two block length 24m, above last ground on the scene, the left side two block wing plate 1 of two blocks, the right side of the I-shaped shaped steel of two block length 24m wing plate 1 with the I-shaped shaped steel of another block length 24m is welded, form the metal sheet pile 2 of length 24m, then the length of metal sheet pile 2 equals the prolongation 4 of the ground-connecting-wall projected depth 3+12m of 12m, the length of the parallel ground-connecting-wall bearing of trend of metal sheet pile 2 is 0.5m, the width of vertical ground-connecting-wall bearing of trend is 0.9m, slice off prolongation 4 left side in metal sheet pile 2, each two blocks of wing plates 1 in the right, at lower end, the distance 1m place, metal sheet pile 2 bottom surface of four sides of prolongation 4, respectively open the circular hole 5 of a diameter 0.3m with the electronic puncher of 58J, the unit groove section 7 of rectangular shape is excavated with HB205-1 excavator, the degree of depth 1m of unit groove section 7, width 1.4m, length 7m, the bearing of trend of unit groove section 7 is parallel to the bearing of trend of ground-connecting-wall, is respectively the revetment 8 of steel concrete in the both sides of parallel ground-connecting-wall bearing of trend, unit groove section 7, the length of revetment 8 is 7m, degree of depth 1m, the width 0.2m of revetment 8, place sand is close in the outside of revetment 8, SG35 groover is dug downwards along revetment 8, now unit groove section 7 length 7m, width 1m, cutting depth is to the projected depth 12 meters of ground-connecting-wall, with ZR100A Spiral digging machine in unit groove section 7 both sides, hole 6 diameter 1.1m respectively, and the degree of depth 12m of boring 6 equals the prolongation 4 of 12m, with QY25E crane, metal sheet pile 2 is hung in the boring 6 of unit groove section 7 left and right sides, with timber wedge 9 by wedging between metal sheet pile 2 and revetment 8, drawn top is embedding by the metal sheet pile 2 at unit groove section 7 two ends with the channel-section steel 10 of width 0.05m, the little steel disc of channel-section steel 10 two ends welding covers on metal sheet pile 2, and the distance between two channel-section steels 10 is 0.9m again, concrete perfusion in metal sheet pile 2, then concrete flows in the space between boring 6 and prolongation 4 by the circular hole 5 of diameter 0.3m, and the concrete of perfusion, to prolongation 4 pushes up, is fixed the bottom of metal sheet pile 2 like this, after concrete initial set, then toward concrete perfusion in metal sheet pile 2 to Ground, space between two channel-section steels 10, the reinforcing cage of length 6m, width 0.9m, degree of depth 12m is transferred to ground-connecting-wall projected depth 3, wherein reinforcing cage two end shape reduces that the length of part is 0.20m, width is less than 0.7m, makes reinforcing cage two end shape reduce part and is stuck between two blocks of wing plates 1 of metal sheet pile, joint case 11 is placed in the space between two blocks of wing plates 1 outside metal sheet pile 2, with concrete filling wrap up reinforcing cage, reinforcing cage two end shape reduces the space formed after part is stuck between two blocks of wing plates 1, and makes concrete top to Ground, when after concrete consolidation, with manually removing timber wedge 9, channel-section steel 10, joint case 11, make the foundation pit supporting construction of first interior diaphragm wall of unit groove section (7), make the foundation pit supporting construction of the diaphragm wall in second unit groove section by above-mentioned same parts connected mode again.
Embodiment 2
The dark 12m of Zhongshan Road, Nanjing foundation ditch, foundation ditch one length of side 7m.Ground is clay to below ground 4m, and below 4m is sand, and below ground 1m is phreatic surface.The outer 5m of foundation pit side-wall is Metro Line 1 in Nanjing and Nanjing city traffic hinge Zhongshan Road.In order to ensure being perfectly safe of subway Line 1 and Zhongshan Road, transport hub, the water and soil outside foundation ditch must be stoped to flow in foundation ditch, simultaneously in order to reduce construction investment, owner determines between foundation ditch and foundation pit side-wall, to arrange ground-connecting-wall, to play the multi-function action of ground-connecting-wall---and keep off soil, sealing, carry vertical force as skin.Ground-connecting-wall length 7m, degree of depth 12m, width 1m, be made up of a unit groove section 7 and two metal sheet pile 2 joints, unit groove section 7 length 6m, degree of depth 12m, width 1m, each metal sheet pile 2 is made up of the prolongation 4 of 12m ground-connecting-wall projected depth and 18m, the length 0.5m of the parallel ground-connecting-wall bearing of trend of metal sheet pile 2, the width 0.9m of the vertical ground-connecting-wall bearing of trend of metal sheet pile 2, then a kind of construction method of diaphragm wall metal sheet pile joint, its construction sequence is as follows.
1, smooth location, removes obstruction and underground utilities on the ground, keeps levelling of the land;
2, adopt the I-shaped shaped steel that Ma'anshan Iron and Steel Co., Ltd produces, I-shaped shaped steel about the length 12m of every block has two blocks of wing plates, in I-shaped shaped steel width i.e. " work " word, " erecting " the end of a thread is to last 0.9m, every block wing plate 1 is along the length 0.25m of ground-connecting-wall bearing of trend, distance in " work " word about " erecting " line between two pieces of wing plate 1 outermost end is 0.5m, one piece of I-shaped shaped steel is divided equally the I-shaped shaped steel being sawn into two block length 6m, then weld after docking with other two pieces of I-shaped shaped steel respectively, make the I-shaped shaped steel of two block length 30m respectively, ground on the scene welds the left side two block wing plate 1 of two blocks, the right side of the I-shaped shaped steel of block length 30m wing plate 1 with the I-shaped shaped steel of another block length 30m, make the metal sheet pile 2 of length 30m, then the length of metal sheet pile 2 equals the prolongation 4 of the ground-connecting-wall projected depth 3+18m of 12m, the length of the parallel ground-connecting-wall bearing of trend of metal sheet pile 2 is 0.5m, the width of vertical ground-connecting-wall bearing of trend is 0.9m,
3, prolongation 4 left side in metal sheet pile 2, each two blocks of wing plates 1 in the right are sliced off;
4, at lower end, the distance 1m place, metal sheet pile 2 bottom surface of four sides of prolongation 4, the hole 5 of a diameter 0.3m is respectively opened with the electronic puncher of 58J;
5, on the place of design cell groove section 7, the unit groove section 7 of rectangular shape is excavated with HB205-1 excavator, the degree of depth 1m of unit groove section 7, width 1.4m, length 7m, the bearing of trend of unit groove section 7 is parallel to the bearing of trend of ground-connecting-wall, at parallel ground-connecting-wall bearing of trend, the both sides of unit groove section 7 are the revetment 8 of reinforcing bar composition that gets up of construction concrete filling parcel colligation respectively, the effect of revetment 8 prevents shallow-layer place sand to the movement of unit groove section 7, the length of revetment 8 is the length of length+two metal sheet piles 2 in unit groove section 7 two ends of unit groove section 7, namely the length of revetment 8 is 7m, the degree of depth 1m of revetment 8, the width 0.2m of revetment 8, place sand is close in the outside of revetment 8,
6, SG35 groover is moved to the centre of unit groove section 7, dig downwards along revetment 8, now unit groove section 7 length 7m, the cutting depth of width 1m, SG35 groover is to the projected depth 3 of ground-connecting-wall;
7, ZR100A Spiral digging machine is moved on the left of unit groove section 7, ZR100A Spiral digging machine drill bit extend into ground-connecting-wall projected depth 3, rotary drill, boring 6 of spudding in, and hole 6 diameter 1.1m, 6 diameters of holing>=metal sheet pile 2 catercorner length
the degree of depth 12m of boring 6 equals the prolongation 4 of 12m;
8, ZR100A Spiral digging machine is moved on the right side of unit groove section 7, ZR100A Spiral digging machine drill bit extend into ground-connecting-wall projected depth 3, rotary drill, boring 6 of spudding in, and hole 6 diameter 1.1m, 6 diameters of holing>=metal sheet pile 2 catercorner length
the degree of depth 12m of boring 6 equals the prolongation 4 of 12m in metal sheet pile 2;
9, with QY25E crane, metal sheet pile 2 is hung in the boring 6 of unit groove section 7 left and right sides;
10, use timber wedge 9 by metal sheet pile 2 and revetment 8 wedging;
11, drawn top is embedding by unit groove section 7 two ends metal sheet pile 2 with the channel-section steel 10 of width 0.05m, the steel disc small in ends of channel-section steel 10 covers on metal sheet pile 2, and the distance between two channel-section steels 10 is 0.9m.
12, toward concrete perfusion in metal sheet pile 2, then concrete is flow in the space between boring 6 and prolongation 4 by the circular hole 5 of diameter 0.3m, is filled into top of concrete to prolongation 4 pushes up, like this bottom of metal sheet pile 2 is fixed;
13, etc., after the concrete initial set between boring 6 and prolongation 4 in space, in metal sheet pile 2, concrete perfusion is to Ground;
14, use QY25E crane along the space between two channel-section steels 10, the reinforcing cage of length 6m, width 0.9m, degree of depth 12m is transferred to ground-connecting-wall projected depth 3, wherein reinforcing cage two end shape reduce part length is less than 0.25m, width is less than 0.9m, make reinforcing cage two end shape reduce part be stuck between two blocks of wing plates 1;
15, hanging joint case 11 with QY25E crane is put into outside metal sheet pile 2 and Site Soil, in space between two blocks of wing plates 1, ensure that joint case 11 top is Ground, prevention unit groove section 7 moves outside unit groove section 7;
16, with concrete filling wrap up reinforcing cage, reinforcing cage two end shape reduces the space formed after part is stuck between two blocks of wing plates 1, and makes concrete top to Ground;
17, with manually removing timber wedge 9, channel-section steel 10, the joint case 11 outside unit groove section 7 left and right sides metal sheet pile 2 and between Site Soil is removed with crane, joint case 11 is put on place, with place sand fill up timber wedge 9, two channel-section steels 10, the space that stays of joint case 11.
Claims (3)
1. the foundation pit supporting construction of a diaphragm wall, it is characterized in that this foundation pit supporting construction is by metal sheet pile (2), unit groove section (7), revetment (8), timber wedge (9), channel-section steel (10), joint case (11) and reinforcing cage (12) formed, wherein I-shaped shaped steel has four pieces of wing plates (1), weld after two pieces, the right side wing plate (1) of one piece of I-shaped shaped steel is docked with two pieces of wing plates (1) on the left of the I-shaped shaped steel of another block and make metal sheet pile (2), the length of metal sheet pile (2) is equaled the length that ground-connecting-wall projected depth (3) adds prolongation (4), by the left side of metal sheet pile (2) prolongation (4), the each two blocks of wing plates in the right cut away, be respectively on tetragonal steel plate bore a circular hole (5) in the central authorities of the prolongation (4) of metal sheet pile (2), (6) are holed respectively bottom the two ends of unit groove section (7), the prolongation (4) of two metal sheet piles (2) of above-mentioned cutting wing plate is inserted in boring (6) respectively, and to placing of concrete in boring (6), the two sides of unit groove section (7) are revetment (8), the wedging of four pieces of timber wedge (9) is used in space between revetment (8) in two sides and two metal sheet piles (2) at two ends respectively, be overlapped on two metal sheet piles (2) at unit groove section (7) two ends respectively with the two ends of two channel-section steels (10), two joint casees (11) are placed between two blocks of wing plates outside two metal sheet piles (2) respectively, reinforcing cage (12) is put into unit groove section (7) between two channel-section steels (10), two metal sheet piles (2) and unit groove section (7) are reinforced concrete structure, when after concrete consolidation by timber wedge (9), channel-section steel (10) and joint case (11) take out, the foundation pit supporting construction of the diaphragm wall in first unit groove section (7) is made, the foundation pit supporting construction making the diaphragm wall of second unit groove section (7) is again linked by above-mentioned identical modular construction.
2. foundation pit supporting construction according to claim 1, it is characterized in that one piece of little steel disc is welded at the two ends of described channel-section steel (10) respectively, the little steel disc at two ends covers the top in metal sheet pile (2).
3. prepare a method for the foundation pit supporting construction of diaphragm wall described in claim 1, its method step is as follows:
A, smooth location, remove obstruction and underground utilities on the ground, keep levelling of the land;
B, ground on the scene weld the left side two piece wing plate (1) of two pieces, the right side of one piece of I-shaped shaped steel wing plate (1) with the I-shaped shaped steel of another block, make metal sheet pile (2), and make the length of metal sheet pile (2) equal ground-connecting-wall projected depth (3)+prolongation (4);
C, slice off prolongation (4) left side in metal sheet pile (2), each two blocks of wing plates in the right;
D, lower end in prolongation (4) four sides, respectively open the circular hole (5) of a diameter 0.3m with electronic puncher;
E, on the place of design cell groove section (7), the unit groove section (7) of rectangular shape is excavated with excavator, the degree of depth 1-2m of unit groove section (7), the bearing of trend of unit groove section (7) is parallel to the bearing of trend of ground-connecting-wall, the both sides of unit groove section (7) are the revetment (8) of reinforcing bar composition that gets up of construction concrete filling parcel colligation respectively, the effect of revetment (8) prevents shallow-layer place sand to the movement of unit groove section (7), the length of revetment (8) is the width of length+two metal sheet piles (2) in unit groove section (7) two ends of unit groove section (7), the degree of depth 1-2m of revetment (8), the width 0.1-0.25m of revetment (8), place sand is close in the outside of revetment (8),
F, groover is moved to the centre of unit groove section (7), dig downwards along revetment (8), calculate from Ground, the cutting depth of groover is to ground-connecting-wall projected depth (3);
G, Spiral digging machine is moved to the left side of unit groove section (7), Spiral digging machine drill bit extend into ground-connecting-wall projected depth (3), rotary drill, to spud in boring (6), boring (6) diameter >=metal sheet pile (2) catercorner length, the degree of depth of boring (6) equals metal sheet pile prolongation (4);
H, Spiral digging machine is moved to the right side of unit groove section (7), Spiral digging machine drill bit extend into ground-connecting-wall projected depth (3), rotary drill, to spud in boring (6), boring (6) diameter >=metal sheet pile (2) catercorner length, the degree of depth of boring (6) equals metal sheet pile prolongation (4);
I, with crane, metal sheet pile (2) is hung in the boring (6) of unit groove section (7) left and right sides;
J, use timber wedge (9) are by metal sheet pile (2) and revetment (8) wedging;
K, embeddingly to be drawn top at unit groove section (7) two ends metal sheet pile (2) with channel-section steel (10), the little steel disc of the two ends welding of channel-section steel (10) covers on metal sheet pile (2);
L, past metal sheet pile (2) interior concrete perfusion, then concrete flows in the space between boring (6) and prolongation (4) by circular hole (5), be filled into top of concrete to prolongation (4) top, like this bottom of metal sheet pile (2) fixed;
M, etc. after the concrete initial set between boring (6) and prolongation (4) in space, past metal sheet pile (2) interior concrete perfusion is to Ground;
N, use crane are along the space between unit groove section (7) two channel-section steel (10), reinforcing cage (12) is transferred to ground-connecting-wall projected depth (3), and reinforcing cage (12) two end shape is reduced between two blocks of wing plates that part is stuck in metal sheet pile (2);
O, to hang in space that joint case (11) is put between metal sheet pile (2) outside and Site Soil, two pieces of wing plates (1) with crane, ensure that joint case (11) top is Ground, prevention unit groove section (7) outwards movement;
P, to wrap up reinforcing cage (12), space between reinforcing cage (12) and metal sheet pile (2) with concrete filling, and make concrete top to Ground;
Q, with manually removing timber wedge (9), channel-section steel (10), the joint case (11) between outside, unit groove section (7) left and right sides metal sheet pile (2) and Site Soil is removed with crane, joint case (11) is put on place, with the space that place sand fills up timber wedge (9), two channel-section steels (10), joint casees (11) stay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN104594359B (en) * | 2014-11-24 | 2016-05-04 | 江西中恒地下空间科技有限公司 | The construction method of a kind of many row's shaped steel overlap joints supporting |
| CN109736476A (en) * | 2019-01-07 | 2019-05-10 | 中建二局第一建筑工程有限公司 | A kind of post-stressed cast-in-place diaphragm wall |
| CN113957887B (en) * | 2021-09-23 | 2023-04-11 | 江苏东合南岩土科技股份有限公司 | Pile-wall integrated construction method of core barrel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2820960Y (en) * | 2005-07-14 | 2006-09-27 | 中船第九设计研究院 | Check shape underground wall self standing wall protection structure |
| CN101349057A (en) * | 2008-08-19 | 2009-01-21 | 上海建工股份有限公司 | Underground continuous wall construction method crossing city pipelines |
| CN201981532U (en) * | 2011-04-02 | 2011-09-21 | 中铁十二局集团建筑安装工程有限公司 | Bearing type super deep underground continuous wall adaptor |
| CN102535441A (en) * | 2012-03-16 | 2012-07-04 | 广州中煤江南基础工程公司 | Construction method of underground diaphragm wall |
Family Cites Families (2)
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| JP2928106B2 (en) * | 1994-11-10 | 1999-08-03 | 戸田建設株式会社 | Rebar basket used for underground continuous wall method |
| JP3663566B2 (en) * | 1998-01-22 | 2005-06-22 | 清水建設株式会社 | Underground continuous wall joint structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2820960Y (en) * | 2005-07-14 | 2006-09-27 | 中船第九设计研究院 | Check shape underground wall self standing wall protection structure |
| CN101349057A (en) * | 2008-08-19 | 2009-01-21 | 上海建工股份有限公司 | Underground continuous wall construction method crossing city pipelines |
| CN201981532U (en) * | 2011-04-02 | 2011-09-21 | 中铁十二局集团建筑安装工程有限公司 | Bearing type super deep underground continuous wall adaptor |
| CN102535441A (en) * | 2012-03-16 | 2012-07-04 | 广州中煤江南基础工程公司 | Construction method of underground diaphragm wall |
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Effective date of registration: 20151111 Address after: 210007 Jiangsu city of Nanjing province Shimenkan Baixia District No. 102 Huaxin Building Room 206 Patentee after: Jiangsu East China Geological Construction Group Co., Ltd. Address before: 210007 Jiangsu city of Nanjing province Shimenkan Baixia District No. 102 Patentee before: Jiangsu East China Geological Construction Group Co., Ltd. Patentee before: Jiangsu Huadu Construction Co., Ltd. Patentee before: Jiangsu Huadong Constructional Fundament Engineering Co., Ltd. |