CN203782692U - Underwater pouring root type foundation provided with retaining wall and internal mold system thereof - Google Patents
Underwater pouring root type foundation provided with retaining wall and internal mold system thereof Download PDFInfo
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- CN203782692U CN203782692U CN201420208969.3U CN201420208969U CN203782692U CN 203782692 U CN203782692 U CN 203782692U CN 201420208969 U CN201420208969 U CN 201420208969U CN 203782692 U CN203782692 U CN 203782692U
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- retaining wall
- type foundation
- tubing string
- concrete
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- 239000004567 concrete Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 238000005266 casting Methods 0.000 claims description 26
- 238000009415 formwork Methods 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 21
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses an underwater pouring root type foundation provided with a retaining wall and an internal mold system thereof. The underwater pouring root type foundation is characterized in that a retaining wall layer is formed between a cast-in-situ reinforcement concrete pipe column and a pore-forming inner wall and is poured by adopting underwater quick setting material, root keys are arranged on the side wall of the concrete pipe column in the radial direction of the pipe column, a concrete back cover is formed in the bottom of the concrete pipe column, and a top cover is poured at the top of the concrete pipe column, so that an underwater pouring root type foundation provided with the retaining wall is formed. The underwater pouring root type foundation can be effectively applied to civil engineering, bridge housing construction and hydraulic structure, and improves the construction efficiency.
Description
Technical field
The utility model relates to that civil engineering, bridge room are built, basis and construction inner formwork system thereof in hydro-structure.
Background technology
Existing open caisson and immersed tube foundation construction adopt the method that relies on deadweight or ancillary method heightening and sinking then to carry out mud jacking processing after segmentation prefabricating member to construct.For this technique, except existing, construction prefabricated component transport difficulty, hanging device are large, prefabricated component sinks the problems such as difficulty, also has following what time being difficult to control: after sinking because the easy integral inclination of residue is arranged at bottom; Segmentation prefabricating, respectively saves interface concatenation construction difficulty large; Mud jacking complex process, squeezing quality is difficult to control, and cost long in time limit is high.The above problem of prefabrication construction has become a difficult problem recognized within the industry.
Utility model content
The utility model is for avoiding the existing weak point of above-mentioned prior art, and a kind of underwater casting base type foundation and inner formwork system thereof with retaining wall is provided, with convenient construction, raising efficiency of construction.
The utility model is that technical solution problem adopts following technical scheme:
The utility model with the design feature of the underwater casting base type foundation of retaining wall is: described base type foundation is between cast-in-place reinforced-concrete tubing string and pore-forming inwall, to adopt under water fast gel material to build to be formed with retaining wall layer, on the sidewall of described concrete tubing string, be radially provided with root key along tubing string, be formed with concrete back cover in the bottom of described concrete tubing string, build top cover at the top of described concrete tubing string and form the underwater casting base type foundation with retaining wall.
The utility model is also with the design feature of the underwater casting base type foundation of retaining wall: the thickness of described retaining wall layer is 5 to 20cm.
The utility model is to comprise with the design feature of the underwater casting self-floating inner formwork system of the underwater casting base type foundation of retaining wall: a steel work coxopodite template, in described coxopodite template, assemble section by section each precast segment inner formword from bottom to top; Described each precast segment inner formword is the totally-enclosed steel structure pontoon that can obtain buoyancy in water.
The design feature of the utility model underwater casting self-floating inner formwork system is also:
Described coxopodite template is cast in the concrete back cover in tubing string hole and positions; Described each precast segment inner formword is to be formed by tile template assembly; In described each precast segment inner formword, be horizontally disposed " ten " word bracing frame and be supported with positioning vertical column on it is four support levels of " ten " word, the mutual inlay card of positioning vertical column on each tile template and adjacent position, and can vertically slide taking described positioning vertical column as lead; Between the prefabricated inner formword of adjacent segment, the positioning vertical column on correspondence position is threaded mutually; Be in adjacent locational the first precast segment inner formword of described coxopodite template in positioning vertical column be to be threaded on the end face of described coxopodite template, between described each precast segment inner formword, run through the locking steel hinge line for stretch-draw; Described locking steel hinge line utilizes jack to carry out stretch-draw on the limiting platform of top, hole.
The epimere of described coxopodite template is cylindrical tube, and hypomere is divergent-cone wall, and described coxopodite template is to position in the concrete back cover to be cast in tubing string hole at the bottom of its conical tube.
The center of Ge road " ten " word bracing frame is respectively arranged with steel strand and fastens node, and has recovery to fasten the aperture that is connected in series and extends to tubing string hole between node at each steel strand with steel strand, for reclaiming " ten " word bracing frame.
Compared with the prior art, the useful technique effect of the utility model is embodied in:
1, in the utility model, retaining wall layer has higher intensity mass ratio, rigidity mass ratio and good decay resistance, and barrier performance is good, using it as the concrete protecting sheathing of pipe shaft, concrete structure is implemented to life-cycle protection;
2, in the utility model retaining wall layer can retrain preferably immersed tube longitudinally and hoop strain, cage of reinforcement can configure according to minimum steel ratio, greatly reduce with ordinary reinforced concrete immersed tube reinforcement ratio, after construction, Inner template is reused, thereby saving cost, consumption has also alleviated cage of reinforcement lifting weight.
3,, compared with concrete prefabricated immersed tube, the matching of retaining wall layer and inner formword in the utility model, has solved the prefabricated Large-diameter Sinking Pipe in place and has transported difficult problem, can greatly improve efficiency of construction, reduction of erection time;
4, the utility model heads into root key to form base type foundation at tubing string sidewall, utilizes base type foundation to play the carrying effect of footing beam, gives full play to soil bearing capacity.Due to the implantation of root key, base type foundation is compared with other form bases of same diameter, and its effective diameter strengthens, bearing capacity is effectively improved, for thick-covering, Large Span Bridges basis, traditional underlying table reveals slenderness ratio seriously lacks of proper care especially, and base type foundation can effectively solve above-mentioned engineering problem.
5, and in prior art the prefabricated height that connects is in junction difficult treatment, and quality is wayward, and the utility model is realized cylinder pile foundation primary concreting and completed, and basis is complete entirety, can effectively improve fundamental mechanics performance, and mass of foundation is reliable.
6, the prefabricated sinking engineering method in prior art needs to carry out mud jacking processing after prefabricated component has sunk, and mud jacking complex process is difficult to control for cylinder pile foundation bottom squeezing quality especially, causes foundation bottom periphery loose, and foundation bearing capacity is reduced.The utility model is realized disposable cast-in-place, does not need mud jacking processing.And the utility model adopts steel work taper coxopodite template, can stretch to compared with depths, then completes and builds, because the concrete flowability of building can be infiltrated each space, the loose problem of bottom periphery that there will not be traditional engineering method to cause through extruding by force.
Brief description of the drawings
Fig. 1 is the utility model self-floating inner formwork system elevation;
Fig. 2 is the utility model self-floating inner formwork system plan view;
Fig. 3 is coxopodite locating template scheme of installation in the utility model;
Fig. 4 is second section column and cross supporting frame scheme of installation in the utility model;
Fig. 5 is from floating template and positioning vertical column connection diagram in the utility model;
Fig. 6 is cross supporting frame and positioning vertical column connection diagram in the utility model;
Fig. 7 is the underwater casting base type foundation elevational schematic view of the utility model with retaining wall;
Fig. 8 is the underwater casting base type foundation floor map of the utility model with retaining wall;
Fig. 9 is that the utility model has been built rear structural representation with the underwater casting base type foundation of retaining wall.
Number in the figure: 1 retaining wall layer, 2 reinforcing cages, 3 inner formwords, 3a stiffener, 4 coxopodite templates, 5 is " ten " word bracing frame, 5a cone pin, 6 positioning vertical columns, 6a supports bracket, 7 locking steel hinge lines, 8 top, hole limiting platforms, 9 jack, 10 steel strand are fastened node, 11 concrete back covers, 12 recovery steel strand, 13 through wires holes, 14 keyholes, 15 keys, 16 pipe shaft concrete.
Detailed description of the invention
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, in the present embodiment, be provided for construction and with the form of structure of the inner formwork system of the underwater casting base type foundation of retaining wall be:
As shown in Figure 1, comprise a steel work coxopodite template 4, in coxopodite template 4, assemble section by section each precast segment inner formword 3 from bottom to top; Each precast segment inner formword 3 is for can obtain the totally-enclosed steel work hollow pontoon structure of buoyancy in water, and after discharging the locking of internal mold, each sections inner formword 3 can rely on buoyancy floating to realize and reclaim; Coxopodite template 4 is cast in the concrete back cover 11 in tubing string hole and positions.
As shown in Figure 2 and Figure 5, each precast segment inner formword 3 is to be formed by tile template assembly; In each precast segment inner formword 3, be horizontally disposed " ten " word bracing frame 5 and be supported with positioning vertical column 6 on it is four support levels of " ten " word, the mutual inlay card of positioning vertical column 6 on each tile template and adjacent position, and can vertically slide taking positioning vertical column 6 as lead; Each tile template is hollow totally-enclosed floating template, is provided with each road stiffener 3a in it; Each precast segment inner formword 3 can 6-15m according to practice of construction condition.
As shown in Fig. 3, Fig. 4 and Fig. 5, between the prefabricated inner formword 3 of adjacent segment, the positioning vertical column 6 on correspondence position is threaded mutually; Be in adjacent locational the first precast segment inner formword of coxopodite template 4 in positioning vertical column be to be threaded on the end face of coxopodite template 4, between each precast segment inner formword 3, run through the locking steel hinge line 7 for stretch-draw by the through wires hole 13 being arranged in prefabricated inner formword 3; Locking steel hinge line 7 utilizes jack 9 to carry out stretch-draw on top, hole limiting platform 8.
In concrete enforcement, the epimere of coxopodite template 4 is cylindrical tube, and hypomere is divergent-cone wall, and coxopodite template 4 is to position in the concrete back cover 11 to be cast in tubing string hole at the bottom of its conical tube;
As shown in Figure 6, " ten " word bracing frame 5 arranges according to stressing conditions, every joint positioning vertical column 6 at least arranges twice " ten " word bracing frame 5, the center of Ge road " ten " word bracing frame 5 is respectively arranged with steel strand and fastens node 10, and have to reclaim and fasten and between node 10, be connected in series and extend to aperture at each steel strand with steel strand 12, for reclaiming " ten " word bracing frame 5, on the inside wall of positioning vertical column 6, arrange and support bracket 6a, " ten " word bracing frame 5 is connected to and is supported bracket 6a by cone pin 5a.
Referring to Fig. 7, Fig. 8 and Fig. 9, in the present embodiment, be between cast-in-place reinforced-concrete tubing string and pore-forming inwall, to adopt under water fast gel material to build to be formed with retaining wall layer 1 with the form of structure of the underwater casting base type foundation of retaining wall, on the sidewall of concrete tubing string, be radially provided with root key 15 along tubing string, be formed with concrete back cover 11 in the bottom of concrete tubing string, build top cover at the top of concrete tubing string and form the underwater casting base type foundation with retaining wall.
Construction method with the underwater casting base type foundation of retaining wall in the present embodiment is carried out as follows:
1, at the basic position place setting, with drilling machine construction pore-forming.
2, in pore-forming, utilize annular sliding form apparatus to build retaining wall layer 1 along pore-forming inwall with fast gel material under water from bottom to top, form retaining wall hole; In retaining wall hole, transfer tubular reinforcing cage 2, reinforcing cage 2 is reserved with root keyhole 14 at desired location.
3, in the cylinder of reinforcing cage 2, transfer coxopodite template 4, in coxopodite template 4, assembling transfer each precast segment inner formword 3 by plug-in counterweight and form internal mold section by section from bottom to top; Locking is built underplate concrete after internal mold and is formed concrete back cover 11 in retaining wall hole, and coxopodite template 4 is cast in the concrete back cover 11 in tubing string hole and positions, and makes retaining wall hole shape become the circular cylinder of back cover; Concrete implement be below coxopodite template 4 to its end face while being in position, aperture, at the end face of coxopodite template 4, positioning vertical column and " ten " word bracing frame in the first sections prefab form is installed; Again transfer to the top end of the positioning vertical column in the first sections prefab form when the position, aperture, with the positioning vertical column and " ten " word bracing frame that are threaded in a upper precast segment template; Continue to transfer positioning vertical column and " ten " word bracing frame in the pre-inner formword of each sections, when utilizing plug-in counterweight that each tile template in each precast segment template is sunk on assigned address for 6 times along positioning vertical column successively from aperture place, on top, hole limiting platform 8, utilize jack 9 stretch-draw to be applied in the locking steel strand 7 in through wires hole 13 on each precast segment inner formword 3 and carry out compacting locking, complete internal mold and install.
4, in the circular cylinder of back cover, taking retaining wall layer 1 as external mold, between external mold and internal mold, build pipe shaft concrete 16 and in root keyhole 14, heading into root key 15, reach after intensity at pipe shaft concrete, remove the locking to internal mold, take out each precast segment inner formword 3 from top to bottom, form the underwater casting radical tubing string with retaining wall;
5, complete the construction with the underwater casting base type foundation of retaining wall at the end face cast top cover of radical tubing string.
In concrete enforcement, under water fast gel material be with cement, gypsum, HPMC material and water by 1: 1: 0.01: 0.5 quality mixture ratio mixes, can highly wait actual condition suitably to adjust according to building, fast gel material setting time is 1 hour, intensity is 2MPa, and the thickness of building the retaining wall layer 1 of formation is 5 to 20cm.
The casting process of annular sliding form apparatus is to build the strength of materials at initial position to reach after permissible value, mobile traveling formwork to the next position continues to build, realize continuous placing, sliding traveling formwork in annular sliding form apparatus is annular, and this construction technology is used widely at present in engineering construction.
The length of single-unit inner formword 3 is 6～15 meters, and each precast segment inner formword 3 is set to hollow pontoon structure, and after discharging the locking of inner formword, each sections inner formword 3 can rely on buoyancy floating to realize and reclaim, and it is reused, and saves cost, saves the duration; Be pressed into pore-forming bottom with steel work taper coxopodite template 4 and put compared with deep-seated, can effectively play effect fixing and location inner formword.
The utility model tubing string diameter to 6m, can be widely used in the engineering construction fields such as bridge room is built, hydro-structure 3, applicable to the construction on land conventional basis, as open caisson, tubing string etc.; Be particularly suited for the construction on basis in water, as Anchor Foundation, group wells basis etc. in the king-post basis of bridge, water.Also can on the basis of this structure, implement to increase the measure of frictional force, as head into root key formation base type foundation etc.
Claims (6)
1. the underwater casting base type foundation with retaining wall, it is characterized in that: described base type foundation is between cast-in-place reinforced-concrete tubing string and pore-forming inwall, to adopt under water fast gel material to build to be formed with retaining wall layer (1), on the sidewall of described concrete tubing string, be radially provided with root key (15) along tubing string, be formed with concrete back cover (11) in the bottom of described concrete tubing string, build top cover at the top of described concrete tubing string and form the underwater casting base type foundation with retaining wall.
2. the underwater casting base type foundation with retaining wall according to claim 1, is characterized in that: the thickness of described retaining wall layer (1) is 5 to 20cm.
Described in a claim 1 with the underwater casting self-floating inner formwork system of the underwater casting base type foundation of retaining wall, it is characterized in that comprising: a steel work coxopodite template (4), assemble section by section each precast segment inner formword (3) above, from bottom to top in described coxopodite template (4); Described each precast segment inner formword (3) for obtaining the totally-enclosed steel structure pontoon of buoyancy in water.
4. underwater casting self-floating inner formwork system according to claim 3, is characterized in that: described coxopodite template (4) is cast in the concrete back cover (11) in tubing string hole and positions; Described each precast segment inner formword (3) is to be formed by tile template assembly; In described each precast segment inner formword (3), be horizontally disposed " ten " word bracing frames (5) and be supported with positioning vertical column (6) on it is four support levels of " ten " word, positioning vertical column (6) inlay card mutually on each tile template and adjacent position, and can vertically slide taking described positioning vertical column (6) as lead; Between the prefabricated inner formword (3) of adjacent segment, the positioning vertical column (6) on correspondence position is threaded mutually; Be in adjacent locational the first precast segment inner formword of described coxopodite template (4) in positioning vertical column be to be threaded on the end face of described coxopodite template (4), between described each precast segment inner formword (3), run through the locking steel hinge line (7) for stretch-draw; Described locking steel hinge line (7) utilizes jack (9) to carry out stretch-draw on top, hole limiting platform (8).
5. underwater casting self-floating inner formwork system according to claim 3, it is characterized in that: the epimere of described coxopodite template (4) is cylindrical tube, hypomere is divergent-cone wall, and described coxopodite template (4) is to position in the concrete back cover (11) to be cast in tubing string hole at the bottom of its conical tube.
6. underwater casting self-floating inner formwork system according to claim 3, it is characterized in that: the center of Ge road " ten " word bracing frame (5) is respectively arranged with steel strand and fastens node (10), and have recovery to fasten the aperture that is connected in series and extends to tubing string hole between node (10) at each steel strand with steel strand (12), for reclaiming " ten " word bracing frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208969.3U CN203782692U (en) | 2014-04-25 | 2014-04-25 | Underwater pouring root type foundation provided with retaining wall and internal mold system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208969.3U CN203782692U (en) | 2014-04-25 | 2014-04-25 | Underwater pouring root type foundation provided with retaining wall and internal mold system thereof |
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| Publication Number | Publication Date |
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| CN203782692U true CN203782692U (en) | 2014-08-20 |
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| CN201420208969.3U Expired - Lifetime CN203782692U (en) | 2014-04-25 | 2014-04-25 | Underwater pouring root type foundation provided with retaining wall and internal mold system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911989A (en) * | 2014-04-25 | 2014-07-09 | 安徽省高速公路控股集团有限公司 | Underwater pouring root type foundation with retaining wall and construction method thereof |
-
2014
- 2014-04-25 CN CN201420208969.3U patent/CN203782692U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911989A (en) * | 2014-04-25 | 2014-07-09 | 安徽省高速公路控股集团有限公司 | Underwater pouring root type foundation with retaining wall and construction method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
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| CX01 | Expiry of patent term |