CN102031787B - Construction method for cofferdam by taking steel tubes, bamboo basketries and plastic cloth as materials - Google Patents
Construction method for cofferdam by taking steel tubes, bamboo basketries and plastic cloth as materials Download PDFInfo
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- CN102031787B CN102031787B CN2010105516121A CN201010551612A CN102031787B CN 102031787 B CN102031787 B CN 102031787B CN 2010105516121 A CN2010105516121 A CN 2010105516121A CN 201010551612 A CN201010551612 A CN 201010551612A CN 102031787 B CN102031787 B CN 102031787B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 110
- 239000010959 steel Substances 0.000 title claims abstract description 110
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 104
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 104
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 104
- 241001330002 Bambuseae Species 0.000 title claims abstract description 100
- 239000011425 bamboo Substances 0.000 title claims abstract description 100
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- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000010276 construction Methods 0.000 title abstract description 25
- 239000004033 plastic Substances 0.000 title abstract description 6
- 229920003023 plastic Polymers 0.000 title abstract description 6
- 230000009189 diving Effects 0.000 claims abstract description 7
- 238000009313 farming Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
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- 229910001296 Malleable iron Inorganic materials 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
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- 230000005540 biological transmission Effects 0.000 abstract description 15
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 11
- 239000002689 soil Substances 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 10
- 230000009977 dual effect Effects 0.000 description 8
- 238000012258 culturing Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 241000209128 Bambusa Species 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 206010027146 Melanoderma Diseases 0.000 description 4
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- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
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- 239000011888 foil Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
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- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
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Abstract
The invention discloses a construction method for a cofferdam by taking steel tubes, bamboo basketries and plastic cloth as materials, comprising the following process steps of selecting a starting point and an intersection point, setting an upright column as a control point, carrying out farming rope lofting, piling an outer upright column, piling an inner upright column, arranging inner and outer longitudinal bars, arranging a slant rod, arranging a cross bar, arranging a channel steel tube, checking stress of all steel tube bar fasteners, arranging a bamboo basketry plate, arranging color strip cloth, checking in a diving way and observing with draining. Compared with the traditional method, the construction method has the advantages that the construction time is shortened by at least 20 days, the construction cost is saved by over 50 percent, is environment friendly without pollution and construction wastes, and exerts active actions in the building construction of a transmission line.
Description
Technical field
The present invention relates to a kind of employing steel pipe bamboo basketry, to mould cloth be that material carries out the cofferdam job practices, belongs to the electric power construction technical field.
Background technology
Along with the fast development of local economy, power grid construction is like a raging fire, and how iron tower silver line crosses over the in an unbroken line pearl pool, and power construction person are searching out practicable method always untiringly hardy.Originally, in the pearl culture pool, build iron tower foundation, need a large amount of earth of outsourcing, behind PE woven bag or the burlap packeted soil; Manpower delivery is beaten earlier spacing 2-3m two row's timbers to the place, and middle then earth bag laminated repeatedly; Construction is handled a large amount of earth rubbish after finishing, because the Acidity of Aikalinity of assorted soil can pollute pearl pool water quality; Have a strong impact on the growth of pearl culturing clam, the construction freight and miscellaneous charges is big, and the engineering time is long.
Summary of the invention
The objective of the invention is to transmission line of electricity through like the boundless sea during pearl culture base; The tower position can't be avoided building in the pearl pool and culture in the pool; With steel pipe pole horizontal, vertical with diagonal brace uniqueness structural arrangement in an orderly manner, outside sealed envelope colour bar cloth, liner bamboo basketry plate; Discharge the water in the place, cofferdam just blocks water firmly.
In order to reach above-mentioned purpose, solution of the present invention is:
It is that material carries out the cofferdam job practices that a kind of employing steel pipe bamboo basketry is moulded cloth, comprises following processing step: selecting starting point and intersecting point to set up bar is longitudinal rod → arrangement hound → placement transverse bar → placement passage steel pipe → stressed inspection of all steel pipe pole fasteners → placement bamboo basketry plate → placement colour bar cloth → diving inspection → draining observation inside and outside the outer vertical rod of control point → farmings rope setting-out → beat → beat interior vertical rod → placement; The steel pipe that wherein vertically inserts at the bottom of the pool is called vertical rod, and pool subsoil earth 0.5-1.0m is inserted in the vertical rod lower end, the vertical rod upper end 0.3-0.5m that surfaces, and vertical rod is divided into outer vertical rod and interior vertical rod, and outer vertical rod and interior vertical rod are all evenly arranged in a straight line; Longitudinal rod is divided into outer longitudinal rod and interior longitudinal rod, and the inboard of outer vertical rod epimere is called outer longitudinal rod near being provided with a horizontal steel tube; The inboard of interior vertical rod epimere is called interior longitudinal rod near being provided with a horizontal steel tube; Be provided with transverse bar and hound between outer vertical rod and the interior vertical rod.
Between described outer vertical rod and the outer longitudinal rod; Between interior vertical rod and the interior longitudinal rod; Between outer vertical rod and transverse bar, the hound; All adopt fastener to be connected between interior vertical rod and transverse bar, the hound; And outer vertical rod, interior vertical rod, outer longitudinal rod, interior longitudinal rod, transverse bar, hound all adopt steel pipe pole.
Described fastener is that malleable cast iron is made bolt fastener; Fastening bolt is tightened torsional moment between 40N-m to 55N-m.
Described cofferdam corner is made three continuous 30 ° of corners, and the corner outer rim length of side is 7 times to 10 times of transverse bar spacing.
Described outer vertical rod is adopted single steel pipe to arrange according to the fish pond depth of water and is placed or 2 steel pipes arrangement placements; Interior vertical rod adopts single placement or 2 dischargings to put according to the fish pond depth of water; And vertical rod position lateral deviation≤20mm, along track bias≤35mm, verticality departs from≤and 1.5%.
Described hound adopts monocline support or diclinic support according to the fish pond depth of water, i.e. set up hound between vertical rod outside and the interior vertical rod upper and lower side, sets up hound between interior vertical rod and the interior vertical rod upper and lower side.
Described transverse bar and hound are also vertical with outer longitudinal rod, interior longitudinal rod respectively, all fastener center to center distance host node place≤150mm (host node is a point of resultant force).
The vertical bamboo chip of described bamboo basketry plate is parallel to vertical rod to be placed, and is close to the outer vertical rod outside, mud at the bottom of the insertion pool, lower end, and surface >=100mm in the upper end, and adjacent bamboo basketry plate is side by side near placement; Two bamboo basketry plates and neat on the corner, surplus long part is pressed folded at adjacent bamboo basketry plate, and all bamboo basketry plate upper ends are firmly fixed with the longitudinal rod watchman's wooden clapper.
Described colour bar cloth length must integral body continue, and two ends are overlapping to be sewed up with fine rule; Begin from the bank end earlier during placement that total length is to another bank end along the dam, colour bar cloth is shelved on the transverse bar 4, stretches to the water surface then, and the place of every interval 20m folds 0.5m, and 2m is extended in two ends on former earth embankment.Colour bar cloth sinks at the bottom of the pool, make it near the bamboo basketry plate and the pool at the bottom of, divide in pool bottom and to leave the above length of 2m.
Beneficial effect of the present invention is: the present invention is basis with the innovative idea of the protection environment that economizes on resources, and tries to explore new technology, new technology, and successfully having obtained employing steel pipe bamboo basketry, to mould cloth be the job practices that material carries out the cofferdam dash.With steel pipe pole horizontal, vertical with diagonal brace uniqueness structural arrangement in an orderly manner, outside sealed envelope colour bar cloth, liner bamboo basketry plate is discharged the water in the place, cofferdam just blocks water firmly.Adopt steel pipe bamboo basketry of the present invention to mould the cofferdam dash job practices that cloth is material, through different electric pressures, corner and straight line tower base form; The cofferdam construction practice of different depth; With the soil comparison of building a dam, the engineering time shortens 20 days at least, and engineering cost is practiced thrift more than 50%.Be the green engineering of pollution-free, a no building waste, in the transmission line construction engineering, play a positive role.
Description of drawings
Fig. 1 is a cofferdam cross-section structure of the present invention;
Steel pipe pole structure chart in cofferdam when Fig. 2 is depth of water 1.5m of the present invention;
Steel pipe pole structure chart in cofferdam when Fig. 3 is depth of water 2.0m of the present invention;
Steel pipe pole structure chart in cofferdam when Fig. 4 is depth of water 2.5m of the present invention;
Steel pipe pole structure chart in cofferdam when Fig. 5 is depth of water 3.0m of the present invention;
Fig. 6 is the structural representation of bamboo basketry plate of the present invention;
Fig. 7 is the A-A sectional view of Fig. 6;
Fig. 8 is a weir turning sketch map of the present invention.
The specific embodiment
The fish pond of present embodiment: because pearl culturing clam is relatively stricter to environmental requirement, otherwise can influence the quality of pearl, river Acidity of Aikalinity pH value 7-8, water temperature 10-30 ℃, below the dark 1.5m of the water surface.During the transmission line of electricity location, the tower position is chosen near earth embankment, preferably is selected in the two dike arms of angle.Like Fig. 1, shown in Figure 2.
The cofferdam scope: the cofferdam scope according to the iron tower root open, basic pattern and digging mode decide.The basis volume of placing into the soil is big, needs to consider to pile up earth and area increases.Adopt machinery to cut the earth, consider the excavation machinery working face.Generally serve as the rectangle on long limit with former earth embankment, the place net area, left and right sides minor face edge of foundation adds 15m, and the outer long side edge of foundation adds 10m.
It is that material carries out the cofferdam job practices that a kind of employing steel pipe bamboo basketry of present embodiment indication is moulded cloth, comprises following processing step: selecting starting point and intersecting point to set up bar is longitudinal rod → arrangement hound → placement transverse bar → placement passage steel pipe → stressed inspection of all steel pipe pole fasteners → placement bamboo basketry plate → placement colour bar cloth → diving inspection → draining observation inside and outside the outer vertical rod of control point → farmings rope setting-out → beat → beat interior vertical rod → placement; The steel pipe that wherein vertically inserts at the bottom of the pool is called vertical rod, and pool subsoil earth 0.5-1.0m is inserted in the vertical rod lower end, the vertical rod upper end 0.3-0.5m that surfaces, and vertical rod is divided into outer vertical rod 1 and interior vertical rod 2, and outer vertical rod 1 and interior vertical rod 2 spacing 3m are evenly arranged in a straight line; Longitudinal rod is divided into outer longitudinal rod 3 and interior longitudinal rod 8, and the inboard of outer vertical rod 1 epimere is called outer longitudinal rod 3 near being provided with a horizontal steel tube; The inboard of interior vertical rod 2 epimeres is called interior longitudinal rod 8 near being provided with a horizontal steel tube; Be provided with transverse bar 4 and hound 5 between outer vertical rod 1 and the interior vertical rod 2.
Between described outer vertical rod 1 and the outer longitudinal rod 3; Between interior vertical rod 2 and the interior longitudinal rod 8; Between outer vertical rod 1 and transverse bar 4, the hound 5; Adopt fastener to be connected between interior vertical rod 2 and transverse bar 4, the hound 5.Described fastener is that malleable cast iron is made bolt fastener; Fastening bolt is tightened torsional moment between 40N-m to 55N-m.And outer vertical rod 1, interior vertical rod 2, outer longitudinal rod 3, interior longitudinal rod 8, transverse bar 4, hound 5 all adopt steel pipe pole.
The present embodiment steel pipe pole adopts scaffolding steel pipe; Current national standard " vertical masonry joint electric welded steel pipe " (GB/T 13793-2008); Industry standard " building operations fastener type steel pipe scaffold technical specification of security " (JGJ 130-2001); Its quality specifications meets Q235-A level steel regulation in the current national standard " structural carbon steel " (GB/T 700-2006), tension, resistance to compression and flexural strength design load f=205N/mm
2Using always has two kinds of steel pipe pole specifications, diameter 48mm wall thickness 3.5mm and diameter 51mm wall thickness 3.0mm.Table 1 is the steel tube section characteristic index.
Fastener adopts malleable cast iron to make bolt fastener.As the node of right angle, rotation, butt joint power transmission, when guaranteeing that bolt is tightened torsion and reached 65N.m, do not destroy.Quality and performance National standard " steel tube scaffold clasp " (GB 15831-2006) regulation, fastener connects the antiskid bearing capacity and is not less than 8kN.
Described cofferdam corner is made three continuous 30 ° of corners, and corner outer rim length of side L is 7 times of transverse bar 4 spacings, and is as shown in Figure 8.Vertical rod position lateral deviation≤20mm, along track bias≤35mm, verticality departs from≤and 1.5%.Described transverse bar 4 and hound 5 are also vertical with outer longitudinal rod 3, interior longitudinal rod 8 respectively, and fastener is put on transverse bar 4, all fastener center to center distance host node place≤150mm (host node is a point of resultant force).Present embodiment adopts the monocline support, and the position that hound 5 is provided with is employed between outer vertical rod 1 upper end and interior vertical rod 2 lower ends.The vertical bamboo chip of described bamboo basketry plate 6 is parallel to vertical rod to be placed, and is close to the outer vertical rod outside, like Fig. 6, shown in 7; Mud at the bottom of the outer vertical rod 1 and the insertion pool, interior vertical rod 2 lower ends, surface >=100mm in the upper end; Two bamboo basketry plates 6 and neat on the corner, surplus long part is pressed folded at adjacent bamboo basketry plate 6, and all bamboo basketry plate 6 upper ends and longitudinal rod watchman's wooden clapper are firmly fixed.Bamboo basketry plate 6 adopts mao bamboon or the bamboos of growth more than 3 years, withered and yellow, blackspot, damage by worms, rotten bamboo can not use.Bamboo chip width 600mm, length 1700mm, thickness is not less than 6mm, deadweight 0.08kN/m
2About, horizontal close volume, vertical sheet distance is not more than 160mm, and vertically both sides clamp with bamboo chip, and the perforating hole, wear iron wire and fasten.
Described colour bar cloth 7 length must integral body continue, and two ends are overlapping to be sewed up with fine rule; Begin from the bank end earlier during placement that total length is to another bank end along the dam, colour bar cloth 7 is shelved on the transverse bar 4, stretches to the water surface then, and the place of every interval 20m folds 0.5m, and 2m is extended in two ends on former earth embankment.Colour bar cloth 7 sinks at the bottom of the pool, makes it near at the bottom of bamboo basketry plate 6 and the pool, divides in bottom, the pool and leaves the above length of 2m.Plastics colour bar cloth 7 is raw material by propylene, polyvinyl, makes through heating extruded plastic foil → scraping → heat drawing → oven dry → rolling → operations such as circular weaving machine braiding → PE hot pressing coating → scissors finished product.General fabric width 4m, length 50m, weight specification has 100g/m
2-190g/m
2, antiseepage film has dual coated and single face to apply, and material has brand-new PE and new and old PE to mix.Being used in cofferdam construction colour bar cloth should be 100% virgin material PE, flat filament pricker degree 1500D, weight specification 150g/m
2More than, fabric width 4-6m, dual coated, soft, structure is tight.
The present invention is basis with the innovative idea of the protection environment that economizes on resources, and tries to explore new technology, new technology, and successfully having obtained employing steel pipe bamboo basketry, to mould cloth be the job practices that material carries out the cofferdam dash.With steel pipe pole horizontal, vertical with diagonal brace uniqueness structural arrangement in an orderly manner, outside sealed envelope colour bar cloth, liner bamboo basketry plate is discharged the water in the place, cofferdam just blocks water firmly.Adopt steel pipe bamboo basketry of the present invention to mould the cofferdam dash job practices that cloth is material, through different electric pressures, corner and straight line tower base form; The cofferdam construction practice of different depth; With the soil comparison of building a dam, the engineering time shortens 20 days at least, and engineering cost is practiced thrift more than 50%.Be the green engineering of pollution-free, a no building waste, in the transmission line construction engineering, play a positive role.
The fish pond of present embodiment:, otherwise can influence the quality of pearl, river Acidity of Aikalinity pH value 7-8, water temperature 10-30 ℃, the dark 2.0m of the water surface because pearl culturing clam is relatively stricter to environmental requirement.During the transmission line of electricity location, the tower position is chosen near earth embankment, preferably is selected in the two dike arms of angle.Like Fig. 1, shown in Figure 3.
The cofferdam scope: the cofferdam scope according to the iron tower root open, basic pattern and digging mode decide.The basis volume of placing into the soil is big, needs to consider to pile up earth and area increases.Adopt machinery to cut the earth, consider the excavation machinery working face.Generally serve as the rectangle on long limit with former earth embankment, the place net area, left and right sides minor face edge of foundation adds 15m, and the outer long side edge of foundation adds 10m.
It is that material carries out the cofferdam job practices that a kind of employing steel pipe bamboo basketry of present embodiment indication is moulded cloth, comprises following processing step: selecting starting point and intersecting point to set up bar is longitudinal rod → arrangement hound → placement transverse bar → placement passage steel pipe → stressed inspection of all steel pipe pole fasteners → placement bamboo basketry plate → placement colour bar cloth → diving inspection → draining observation inside and outside the outer vertical rod of control point → farmings rope setting-out → beat → beat interior vertical rod → placement; The steel pipe that wherein vertically inserts at the bottom of the pool is called vertical rod, and pool subsoil earth 0.5-1.0m is inserted in the vertical rod lower end, the vertical rod upper end 0.3-0.5m that surfaces, and vertical rod is divided into outer vertical rod 1 and interior vertical rod 2, and outer vertical rod 1 and interior vertical rod 2 spacing 3m are evenly arranged in a straight line; Longitudinal rod is divided into outer longitudinal rod 3 and interior longitudinal rod 8, and the inboard of outer vertical rod 1 epimere is called outer longitudinal rod 3 near being provided with a horizontal steel tube; The inboard of interior vertical rod 2 epimeres is called interior longitudinal rod 8 near being provided with a horizontal steel tube; Be provided with transverse bar 4 and hound 5 between outer vertical rod 1 and the interior vertical rod 2.
Between described outer vertical rod 1 and the outer longitudinal rod 3; Between interior vertical rod 2 and the interior longitudinal rod 8; Between outer vertical rod 1 and transverse bar 4, the hound 5; All adopt fastener to be connected between interior vertical rod 2 and transverse bar 4, the hound 5.Described fastener is that malleable cast iron is made bolt fastener; Fastening bolt is tightened torsional moment between 40N-m to 55N-m.And outer vertical rod 1, interior vertical rod 2, outer longitudinal rod 3, interior longitudinal rod 8, transverse bar 4, hound 5 all adopt steel pipe pole.
The present embodiment steel pipe pole adopts scaffolding steel pipe; Current national standard " vertical masonry joint electric welded steel pipe " (GB/T 13793-2008); Industry standard " building operations fastener type steel pipe scaffold technical specification of security " (JGJ 130-2001); Its quality specifications meets Q235-A level steel regulation in the current national standard " structural carbon steel " (GB/T 700-2006), tension, resistance to compression and flexural strength design load f=205N/mm
2Using always has two kinds of steel pipe pole specifications, diameter 48mm wall thickness 3.5mm and diameter 51mm wall thickness 3.0mm.Table 1 is the steel tube section characteristic index.
Fastener adopts malleable cast iron to make bolt fastener.As the node of right angle, rotation, butt joint power transmission, when guaranteeing that bolt is tightened torsion and reached 65N.m, do not destroy.Quality and performance National standard " steel tube scaffold clasp " (GB 15831-2006) regulation, fastener connects the antiskid bearing capacity and is not less than 8kN.
Described cofferdam corner is made three continuous 30 ° of corners, and corner outer rim length of side L is 8 times of transverse bar 4 spacings, and is as shown in Figure 8.Described outer vertical rod 1 is adopted single placement with interior vertical rod 2.As shown in Figure 3.And vertical rod position lateral deviation≤20mm, along track bias≤35mm, verticality departs from≤and 1.5%.Between outer vertical rod 1 and the interior vertical rod 2 diclinic strut 5 is set, between position vertical rod outside 1 upper and lower side and interior vertical rod 2 upper and lower sides that promptly hound 5 is provided with, between outer vertical rod 1 and interior vertical rod 2 upper ends transverse bar 4 is set.Between outer vertical rod 1 and interior vertical rod 2 upper ends transverse bar 4 is set, all the fastener center to center distance host node place≤150mm (host node is a point of resultant force) on the transverse bar 4.Described transverse bar 4 and hound 5 are also vertical with outer longitudinal rod 3, interior longitudinal rod 8 respectively, and the vertical bamboo chip of described bamboo basketry plate 6 is parallel to vertical rod to be placed, and is close to outside the outer vertical rod, like Fig. 6, shown in 7; Two bamboo basketry plates 6 and neat on the corner, surplus long part is pressed folded at adjacent bamboo basketry plate 6, and all bamboo basketry plate 6 upper ends and longitudinal rod watchman's wooden clapper are firmly fixed.Bamboo basketry plate 6 adopts mao bamboon or the bamboos of growth more than 3 years, withered and yellow, blackspot, damage by worms, rotten bamboo can not use.Bamboo chip width 600mm, length 1100mm, thickness is not less than 6mm, about deadweight 0.08kN/m2, horizontal close volume, vertical sheet distance is not more than 160mm, and vertically both sides clamp with bamboo chip, and the perforating hole, wear iron wire and fasten.
Described colour bar cloth 7 length must integral body continue, and two ends are overlapping to be sewed up with fine rule; Begin from the bank end earlier during placement that total length is to another bank end along the dam, colour bar cloth 7 is shelved on the transverse bar 4, stretches to the water surface then, and the place of every interval 20m folds 0.5m, and 2m is extended in two ends on former earth embankment.Colour bar cloth 7 sinks at the bottom of the pool, makes it near at the bottom of bamboo basketry plate 6 and the pool, divides in bottom, the pool and leaves the above length of 2m.Plastics colour bar cloth 7 is raw material by propylene, polyvinyl, makes through heating extruded plastic foil → scraping → heat drawing → oven dry → rolling → operations such as circular weaving machine braiding → PE hot pressing coating → scissors finished product.General fabric width 4-8m, length 50m, weight specification has 100g/m
2-190g/m
2, antiseepage film has dual coated and single face to apply, and material has brand-new PE and new and old PE to mix.Being used in cofferdam construction colour bar cloth should be 100% virgin material PE, flat filament pricker degree 1500D, weight specification 150g/m
2More than, fabric width 4.5m, dual coated, soft, structure is tight.
The present invention is basis with the innovative idea of the protection environment that economizes on resources, and tries to explore new technology, new technology, and successfully having obtained employing steel pipe bamboo basketry, to mould cloth be the job practices that material carries out the cofferdam dash.With steel pipe pole horizontal, vertical with diagonal brace uniqueness structural arrangement in an orderly manner, outside sealed envelope colour bar cloth, liner bamboo basketry plate is discharged the water in the place, cofferdam just blocks water firmly.Adopt steel pipe bamboo basketry of the present invention to mould the cofferdam dash job practices that cloth is material, through different electric pressures, corner and straight line tower base form; The cofferdam construction practice of different depth; With the soil comparison of building a dam, the engineering time shortens 20 days at least, and engineering cost is practiced thrift more than 50%.Be the green engineering of pollution-free, a no building waste, in the transmission line construction engineering, play a positive role.
The fish pond of present embodiment:, otherwise can influence the quality of pearl, river Acidity of Aikalinity pH value 7-8, water temperature 10-30 ℃, the dark 2.5m of the water surface because pearl culturing clam is relatively stricter to environmental requirement.During the transmission line of electricity location, the tower position is chosen near earth embankment, preferably is selected in the two dike arms of angle.Like Fig. 1, shown in Figure 4.
The cofferdam scope: the cofferdam scope according to the iron tower root open, basic pattern and digging mode decide.The basis volume of placing into the soil is big, needs to consider to pile up earth and area increases.Adopt machinery to cut the earth, consider the excavation machinery working face.Generally serve as the rectangle on long limit with former earth embankment, the place net area, left and right sides minor face edge of foundation adds 15m, and the outer long side edge of foundation adds 10m.
It is that material carries out the cofferdam job practices that a kind of employing steel pipe bamboo basketry of present embodiment indication is moulded cloth, comprises following processing step: selecting starting point and intersecting point to set up bar is longitudinal rod → arrangement hound → placement transverse bar → placement passage steel pipe → stressed inspection of all steel pipe pole fasteners → placement bamboo basketry plate → placement colour bar cloth → diving inspection → draining observation inside and outside the outer vertical rod of control point → farmings rope setting-out → beat → beat interior vertical rod → placement; The steel pipe that wherein vertically inserts at the bottom of the pool is called vertical rod, and pool subsoil earth 0.5-1.0m is inserted in the vertical rod lower end, the vertical rod upper end 0.3-0.5m that surfaces, and vertical rod is divided into outer vertical rod 1 and interior vertical rod 2 spacing 3m, and interior vertical rod 2 has two to arrange spacing 3m; Vertical rod side outside is outer longitudinal rod 3, and in interior vertical rod is interior longitudinal rod 8; Between outer vertical rod 1 and the interior vertical rod 2 diclinic bar 5 is set, monocline bar 5 is set between interior vertical rod, transverse bar 4 is arranged at vertical rod top.
Between described outer vertical rod 1 and the outer longitudinal rod 3; Between interior vertical rod 2 and the interior longitudinal rod 8; Between outer vertical rod 1 and transverse bar 4, the hound 5; All adopt fastener to be connected between interior vertical rod 2 and transverse bar 4, the hound 5.Described fastener is that malleable cast iron is made bolt fastener; Fastening bolt is tightened torsional moment between 40N-m to 55N-m.And outer vertical rod 1, interior vertical rod 2, outer longitudinal rod 3, interior longitudinal rod 8, transverse bar 4, hound 5 all adopt steel pipe pole.
The present embodiment steel pipe pole adopts scaffolding steel pipe; Current national standard " vertical masonry joint electric welded steel pipe " (GB/T 13793-2008); Industry standard " building operations fastener type steel pipe scaffold technical specification of security " (JGJ 130-2001); Its quality specifications meets Q235-A level steel regulation in the current national standard " structural carbon steel " (GB/T 700-2006), tension, resistance to compression and flexural strength design load f=205N/mm
2Using always has two kinds of steel pipe pole specifications, diameter 48mm wall thickness 3.5mm and diameter 51mm wall thickness 3.0mm.Table 1 is the steel tube section characteristic index.
Fastener adopts malleable cast iron to make bolt fastener.As the node of right angle, rotation, butt joint power transmission, when guaranteeing that bolt is tightened torsion and reached 65N.m, do not destroy.Quality and performance National standard " steel tube scaffold clasp " (GB 15831-2006) regulation, fastener connects the antiskid bearing capacity and is not less than 8kN.
Described cofferdam corner is made three continuous 30 ° of corners, and corner outer rim length of side L is 9 times of transverse bar 4 spacings, and is as shown in Figure 8.Vertical rod position lateral deviation≤20mm, along track bias≤35mm, verticality departs from≤and 1.5%.As shown in Figure 4, between the outer vertical rod 1 of a side and the interior vertical rod 2 diclinic strut 5 is set, between the outer vertical rod 1 of opposite side and the interior vertical rod 2 monocline strut 5 is set; Set up between i.e. vertical rod outside 1 and interior vertical rod 2 upper and lower sides between 5, two adjacent interior vertical rods 2 of hound and interior vertical rod 2 upper and lower sides and set up hound 5.Between outer vertical rod 1 and interior vertical rod 2 upper ends transverse bar 4 is set, all the fastener center to center distance host node place≤150mm (host node is a point of resultant force) on the transverse bar 4.Described transverse bar 4 and hound 5 are also vertical with outer longitudinal rod 3, interior longitudinal rod 8 respectively.The vertical bamboo chip of described bamboo basketry plate 6 is parallel to vertical rod to be placed, and is close to the outer vertical rod outside, like Fig. 6, shown in 7; Earlier just two bamboo basketry plates continue and are 2.3m, are close to outer vertical rod 1, mud at the bottom of the insertion pool, lower end, and surface >=100mm in the upper end, and adjacent bamboo basketry plate 6 is side by side near placement; Two bamboo basketry plates 6 and neat on the corner, surplus long part is pressed folded at adjacent bamboo basketry plate 6, and all bamboo basketry plate 6 upper ends and longitudinal rod watchman's wooden clapper are firmly fixed.Bamboo basketry plate 6 adopts mao bamboon or the bamboos of growth more than 3 years, withered and yellow, blackspot, damage by worms, rotten bamboo can not use.Bamboo chip width 800mm, length 1200mm, thickness is not less than 6mm, about deadweight 0.08kN/m2, horizontal close volume, vertical sheet distance is not more than 160mm, and vertically both sides clamp with bamboo chip, and the perforating hole, wear iron wire and fasten.
Described colour bar cloth 7 length must integral body continue, and two ends are overlapping to be sewed up with fine rule; Begin from the bank end earlier during placement that total length is to another bank end along the dam, colour bar cloth 7 is shelved on the transverse bar 4, stretches to the water surface then, and the place of every interval 20m folds 0.5m, and 2m is extended in two ends on former earth embankment.Colour bar cloth 7 sinks at the bottom of the pool, makes it near at the bottom of bamboo basketry plate 6 and the pool, divides in bottom, the pool and leaves the above length of 2m.Plastics colour bar cloth 7 is raw material by propylene, polyvinyl, makes through heating extruded plastic foil → scraping → heat drawing → oven dry → rolling → operations such as circular weaving machine braiding → PE hot pressing coating → scissors finished product.General fabric width 5m, length 50m, weight specification has 100g/m
2-190g/m
2, antiseepage film has dual coated and single face to apply, and material has brand-new PE and new and old PE to mix.Being used in cofferdam construction colour bar cloth should be 100% virgin material PE, flat filament pricker degree 1500D, weight specification 150g/m
2More than, fabric width 4-6m, dual coated, soft, structure is tight.
The present invention is basis with the innovative idea of the protection environment that economizes on resources, and tries to explore new technology, new technology, and successfully having obtained employing steel pipe bamboo basketry, to mould cloth be the job practices that material carries out the cofferdam dash.With steel pipe pole horizontal, vertical with diagonal brace uniqueness structural arrangement in an orderly manner, outside sealed envelope colour bar cloth, liner bamboo basketry plate is discharged the water in the place, cofferdam just blocks water firmly.Adopt steel pipe bamboo basketry of the present invention to mould the cofferdam dash job practices that cloth is material, through different electric pressures, corner and straight line tower base form; The cofferdam construction practice of different depth; With the soil comparison of building a dam, the engineering time shortens 20 days at least, and engineering cost is practiced thrift more than 50%.Be the green engineering of pollution-free, a no building waste, in the transmission line construction engineering, play a positive role.
The fish pond of present embodiment:, otherwise can influence the quality of pearl, river Acidity of Aikalinity pH value 7-8, water temperature 10-30 ℃ because pearl culturing clam is relatively stricter to environmental requirement.During the transmission line of electricity location, the tower position is chosen near earth embankment, preferably is selected in the two dike arms of angle.Like Fig. 1, shown in Figure 5.
The cofferdam scope: the cofferdam scope according to the iron tower root open, basic pattern and digging mode decide.The basis volume of placing into the soil is big, needs to consider to pile up earth and area increases.Adopt machinery to cut the earth, consider the excavation machinery working face.Generally serve as the rectangle on long limit with former earth embankment, the place net area, left and right sides minor face edge of foundation adds 15m, and the outer long side edge of foundation adds 10m.
It is that material carries out the cofferdam job practices that a kind of employing steel pipe bamboo basketry of present embodiment indication is moulded cloth, comprises following processing step: selecting starting point and intersecting point to set up bar is longitudinal rod → arrangement hound → placement transverse bar → placement passage steel pipe → stressed inspection of all steel pipe pole fasteners → placement bamboo basketry plate → placement colour bar cloth → diving inspection → draining observation inside and outside the outer vertical rod of control point → farmings rope setting-out → beat → beat interior vertical rod → placement; The steel pipe that wherein vertically inserts at the bottom of the pool is called vertical rod; Pool subsoil earth 0.5-1.0m is inserted in the vertical rod lower end; 0.3-0.5m surfaces in the vertical rod upper end; Vertical rod is divided into outer vertical rod 1 and interior vertical rod 2 (three rows are arranged), and it is 1.5m, 1.5m, 3.0m that outer vertical rod 1 is arranged in order spacing with interior vertical rod 2, and all evenly arranged in a straight line; Longitudinal rod is divided into outer longitudinal rod 3 and interior longitudinal rod 8, and the inboard of outer vertical rod 1 epimere is called outer longitudinal rod 3 near being provided with a horizontal steel tube; Interior vertical rod 2 epimeres are provided with a horizontal steel tube and are called interior longitudinal rod 8; Between outer vertical rod 1 and the interior vertical rod 2 (middle row) diclinic bar 5 is set, interior vertical rod 2 (removing middle exclusive) is provided with monocline bar 5, is provided with transverse bar 4 between vertical rod.
Between described outer vertical rod 1 and the outer longitudinal rod 3; Between interior vertical rod 2 and the interior longitudinal rod 8; Between outer vertical rod 1 and transverse bar 4, the hound 5; Adopt fastener to be connected between interior vertical rod 2 and transverse bar 4, the hound 5.Described fastener is that malleable cast iron is made bolt fastener; Fastening bolt is tightened torsional moment between 40N-m to 55N-m.And outer vertical rod 1, interior vertical rod 2, outer longitudinal rod 3, interior longitudinal rod 8, transverse bar 4, hound 5 all adopt steel pipe pole.
The present embodiment steel pipe pole adopts scaffolding steel pipe; Current national standard " vertical masonry joint electric welded steel pipe " (GB/T 13793-2008); Industry standard " building operations fastener type steel pipe pin is in the frame technical specification of security " (JGJ 130-2001); Its quality specifications meets Q235-A level steel regulation in the current national standard " structural carbon steel " (GB/T 700-2006), tension, resistance to compression and flexural strength design load f=205N/mm
2Using always has two kinds of steel pipe pole specifications, diameter 48mm wall thickness 3.5mm and diameter 51mm wall thickness 3.0mm.Table 1 is the steel tube section characteristic index.
Fastener adopts malleable cast iron to make bolt fastener.As the node of right angle, rotation, butt joint power transmission, when guaranteeing that bolt is tightened torsion and reached 65N.m, do not destroy.Quality and performance National standard " steel tube scaffold clasp " (GB 15831-2006) regulation, fastener connects the antiskid bearing capacity and is not less than 8kN.
Described cofferdam corner is made three continuous 30 ° of corners, and corner outer rim length of side L is 10 times of transverse bar 4 spacings, and is as shown in Figure 8.How side by side accommodated position is not enough for described outer vertical rod 1 factor amount, and is can two folded and place and squeeze into simultaneously together; Vertical rod position lateral deviation≤20mm, along track bias≤35mm, verticality departs from≤and 1.5%.As shown in Figure 5, described interior vertical rod 2 is provided with three rows, spacing 1500,1500,3000mm; Outer vertical rod 1 and one of interior vertical rod 2 centre are provided with diclinic strut 5, and other two interior vertical rods are provided with monocline strut 5; Set up between i.e. vertical rod outside 1 and interior vertical rod 2 upper and lower sides between 5, two adjacent interior vertical rods 2 of hound and interior vertical rod 2 upper and lower sides and set up hound 5.Between outer vertical rod 1 and interior vertical rod 2 upper ends transverse bar 4 is set, all the fastener center to center distance host node place≤150mm (host node is a point of resultant force) on the transverse bar 4.Described transverse bar 4 and hound 5 are also vertical with outer longitudinal rod 3, interior longitudinal rod 8 respectively.The vertical bamboo chip of described bamboo basketry plate 6 is parallel to vertical rod to be placed, and is close to the outer vertical rod outside, like Fig. 6, shown in 7; Earlier bamboo basketry plate length being continued is 3300, and mud at the bottom of the pool is inserted in the lower end, surfaces >=100mm in the upper end, and adjacent bamboo basketry plate 6 is side by side near placement; Two bamboo basketry plates 6 and neat on the corner, surplus long part is pressed repeatedly at adjacent bamboo basketry plate 6, and all bamboo basketry plate 6 upper ends and longitudinal rod watchman's wooden clapper are firmly fixed.Bamboo basketry plate 6 adopts mao bamboon or the bamboos of growth more than 3 years, withered and yellow, blackspot, damage by worms, rotten bamboo can not use.Bamboo chip width 600mm, length 1100mm, thickness is not less than 6mm, about deadweight 0.08kN/m2, horizontal close volume, vertical sheet distance is not more than 160mm, and vertically both sides clamp with bamboo chip, and the perforating hole, wear iron wire and fasten.
Described colour bar cloth 7 length must integral body continue, and two ends are overlapping to be sewed up with fine rule; Begin from the bank end earlier during placement that total length is to another bank end along the dam, colour bar cloth 7 is shelved on the transverse bar 4, stretches to the water surface then, and the place of every interval 20m folds 0.5m, and 2m is extended in two ends on former earth embankment.Colour bar cloth 7 sinks at the bottom of the pool, makes it near at the bottom of bamboo basketry plate 6 and the pool, divides in bottom, the pool and leaves the above length of 2m.Plastics colour bar cloth 7 is raw material by propylene, polyvinyl, makes through heating extruded plastic foil → scraping → heat drawing → oven dry → rolling → operations such as circular weaving machine braiding → PE hot pressing coating → scissors finished product.General fabric width 7m, length 50m, weight specification has 100g/m
2-190g/m
2, antiseepage film has dual coated and single face to apply, and material has brand-new PE and new and old PE to mix.Being used in cofferdam construction colour bar cloth should be 100% virgin material PE, flat filament pricker degree 1500D, weight specification 150g/m
2More than, fabric width 4-6m, dual coated, soft, structure is tight.
The present invention is basis with the innovative idea of the protection environment that economizes on resources, and tries to explore new technology, new technology, and successfully having obtained employing steel pipe bamboo basketry, to mould cloth be the job practices that material carries out the cofferdam dash.With steel pipe pole horizontal, vertical with diagonal brace uniqueness structural arrangement in an orderly manner, outside sealed envelope colour bar cloth, liner bamboo basketry plate is discharged the water in the place, cofferdam just blocks water firmly.Adopt steel pipe bamboo basketry of the present invention to mould the cofferdam dash job practices that cloth is material, through different electric pressures, corner and straight line tower base form; The cofferdam construction practice of different depth; With the soil comparison of building a dam, the engineering time shortens 20 days at least, and engineering cost is practiced thrift more than 50%.Be the green engineering of pollution-free, a no building waste, in the transmission line construction engineering, play a positive role.
Claims (9)
1. one kind is adopted steel pipe bamboo basketry to mould cloth to be that material carries out the cofferdam job practices, to it is characterized in that: comprise following processing step: selecting starting point and intersecting point to set up bar is longitudinal rod → arrangement hound → placement transverse bar → placement passage steel pipe → stressed inspection of all steel pipe pole fasteners → placement bamboo basketry plate → placement colour bar cloth → diving inspection → draining observation inside and outside the outer vertical rod of control point → farmings rope setting-out → beat → beat interior vertical rod → placement; The steel pipe that wherein vertically inserts at the bottom of the pool is called vertical rod, and pool subsoil earth 0.5-1.0m is inserted in the vertical rod lower end, the vertical rod upper end 0.3-0.5m that surfaces, and vertical rod is divided into outer vertical rod (1) and interior vertical rod (2), and outer vertical rod (1) and interior vertical rod (2) are all evenly arranged in a straight line; Longitudinal rod is divided into outer longitudinal rod (3) and interior longitudinal rod (8), and the inboard of outer vertical rod (1) epimere is called outer longitudinal rod (3) near being provided with a horizontal steel tube; The inboard of interior vertical rod (2) epimere is called interior longitudinal rod (8) near being provided with a horizontal steel tube; Be vertically installed with transverse bar (4) and hound (5) between outer vertical rod (1) and the interior vertical rod (2).
2. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 1 is moulded cloth, it is characterized in that: between described outer vertical rod (1) and the outer longitudinal rod (3); Between interior vertical rod (2) and the interior longitudinal rod (8); Between outer vertical rod (1) and transverse bar (4), the hound (5); Adopt fastener to be connected between interior vertical rod (2) and transverse bar (4), the hound (5), and steel pipe pole is all adopted in outer vertical rod (1), interior vertical rod (2), outer longitudinal rod (3), interior longitudinal rod (8), transverse bar (4), hound (5).
3. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 2 is moulded cloth, it is characterized in that: described fastener is that malleable cast iron is made bolt fastener; Fastening bolt is tightened torsional moment between 40Nm to 55Nm.
4. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 1 is moulded cloth, it is characterized in that: described cofferdam corner is made three continuous 30 ° of corners, and corner outer rim length is the multiple of transverse bar (4) spacing.
5. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 1 is moulded cloth, it is characterized in that: described outer vertical rod (1) is adopted single steel pipe to arrange according to the fish pond depth of water and is placed or 2 steel pipes arrangement placements; Interior vertical rod (2) adopts single placement or 2 dischargings to put according to the fish pond depth of water; And vertical rod position lateral deviation≤20mm, along track bias≤35mm, verticality departs from≤and 1.5%.
6. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 1 is moulded cloth; It is characterized in that: described hound (5) adopts monocline support or diclinic support according to the fish pond depth of water; Set up hound (5) between i.e. vertical rod outside (1) and interior vertical rod (2) upper and lower side, set up hound (5) between two adjacent interior vertical rods (2) and interior vertical rod (2) upper and lower side.
7. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 1 is moulded cloth, it is characterized in that: described transverse bar (4) and hound (5) also respectively with outer longitudinal rod (3), the vertical setting of interior longitudinal rod (8).
8. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 1 is moulded cloth; It is characterized in that: the vertical bamboo chip of described bamboo basketry plate (6) is parallel to vertical rod and places; Be close to outer vertical rod (1) outside; Mud at the bottom of the insertion pool, lower end, surface >=100mm in the upper end, and adjacent bamboo basketry plate (6) is side by side near placement; Two bamboo basketry plates (6) and neat on the corner, surplus long part is pressed folded at adjacent bamboo basketry plate (6), and all bamboo basketry plate (6) upper ends are firmly fixed with the longitudinal rod watchman's wooden clapper.
9. it is that material carries out the cofferdam job practices that employing steel pipe bamboo basketry as claimed in claim 1 is moulded cloth, it is characterized in that: described colour bar cloth (7) length must integral body continue, and two ends are overlapping to be sewed up with fine rule; Begin from the bank end earlier during placement that total length is to another bank end along the dam, colour bar cloth (7) is shelved on the transverse bar (4), stretches to the water surface then, and the place of every interval 20m folds 0.5m, and 2m is extended in two ends on former earth embankment; Colour bar cloth (7) sinks at the bottom of the pool, makes it near bamboo basketry plate (6) He Tangdi, divides in bottom, the pool and leaves the above length of 2m.
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| CN103966979A (en) * | 2014-05-19 | 2014-08-06 | 港海（天津）建设股份有限公司 | Vertical row-connected hydraulic reclamation dam structure for water areas |
| CN104594368B (en) * | 2015-01-28 | 2017-01-11 | 泰昌建设有限公司 | Bamboo raft pile oversized cofferdam and construction method for sea reclamation by adopting same |
| CN105178348A (en) * | 2015-09-07 | 2015-12-23 | 安徽华电工程咨询设计有限公司 | Method for designing soilless cofferdam structure applied to construction of shallow water region pole and tower foundation |
| CN105649095A (en) * | 2016-03-17 | 2016-06-08 | 陈洪伟 | Combined cofferdam and construction method thereof |
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| CN1380469A (en) * | 2002-05-29 | 2002-11-20 | 东营科华水力插板技术中心 | Combined plate-inserting dam and its construction process |
| CN201132960Y (en) * | 2007-11-05 | 2008-10-15 | 上海勘测设计研究院 | Composite batardeau of steel light structure |
| CN101333818A (en) * | 2008-07-17 | 2008-12-31 | 北京翔鲲水务建设有限公司 | Pile film cofferdam and its construction method |
| CN201339195Y (en) * | 2008-12-31 | 2009-11-04 | 中铁六局集团有限公司 | Cofferdam structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005139865A (en) * | 2003-11-10 | 2005-06-02 | Hitachi Zosen Corp | Underwater temporary cofferdam installation and its construction method |
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|---|---|---|---|---|
| CN1380469A (en) * | 2002-05-29 | 2002-11-20 | 东营科华水力插板技术中心 | Combined plate-inserting dam and its construction process |
| CN201132960Y (en) * | 2007-11-05 | 2008-10-15 | 上海勘测设计研究院 | Composite batardeau of steel light structure |
| CN101333818A (en) * | 2008-07-17 | 2008-12-31 | 北京翔鲲水务建设有限公司 | Pile film cofferdam and its construction method |
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Owner name: STATE ELECTRIC NET CROP. CHINA ELECTRIC POWER RESE Effective date: 20130107 |
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Effective date of registration: 20130107 Address after: 312000 Shaoxing Shengli Road, Zhejiang, No. 58 Patentee after: Shaoxing Power Bureau Patentee after: State Grid Corporation of China Patentee after: China Electric Power Science Research Address before: 312000 Shaoxing Shengli Road, Zhejiang, No. 58 Patentee before: Shaoxing Power Bureau |