CN1580411A - Podium type bridge pier foundation structure method - Google Patents
Podium type bridge pier foundation structure method Download PDFInfo
- Publication number
- CN1580411A CN1580411A CN 03153624 CN03153624A CN1580411A CN 1580411 A CN1580411 A CN 1580411A CN 03153624 CN03153624 CN 03153624 CN 03153624 A CN03153624 A CN 03153624A CN 1580411 A CN1580411 A CN 1580411A
- Authority
- CN
- China
- Prior art keywords
- pier footing
- bridge pier
- podium
- footing
- foundation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
This invention relates to a construction method for a bridge pier foundation including the following steps: digging and clearing regions for building the bridge pier foundation, isolating and enclosing water to the cleared region, applying under water concrete to seal the bottom of the water enclosing device to be digged till the foundation bottom surface standard hight is designed so as to form a foundation pit for the bridge pier, putting a steel reinforcement cage in the pit and casting concrete to thep it to form a bridge pier foundation.
Description
Technical field
The present invention relates to a kind of pier footing construction process of bridge, especially relate to a kind of construction process of thin wall-type bridge pier podium type pier footing.
Background technology
At present, in bridge construction, especially under geography, hydrological environment harsh conditions, the construction of pier footing all is a bigger technical problem of puzzlement design and construction personnel.General solution has two kinds, a kind of for adopting open cut foundation, promptly use and enclose wetting system, very big zone around the pier footing is surrounded water, extraction is enclosed the water that wetting system surrounds and is exposed the face of land, the face of land is cleared up and whole under dig, until exposing the rock stratum, on the rock stratum, carry out the concrete integral cast again, form pier footing.The difficulty of construction of the method is bigger, because the degree of depth that will dig out whole pier footing in enclosing aqua region, construction volume is surprising, in order to build bridge pier on described pier footing, require the pier footing planar dimension must be big more a lot of than bridge pier, it be very big therefore to enclose the wetting system engineering.
Another kind method is to adopt clump of piles formula pier footing, promptly make up a lot of pile bodies under the described face of land, build a cushion cap again on pile body, this cushion cap connects as one all pile bodies, in order to guarantee the stability of bridge pier, require the distance between the pile body very big, also than big many of pier shaft, the concrete work amount that therefore makes up cushion cap is very big for the planar dimension that causes cushion cap, if it is bigger that basement rock buries more shallow surface gradient, when intensity was higher, then anti-to push away rigidity excessive, unfavorable to structure stress.
Summary of the invention
Therefore, main purpose of the present invention is the shortcoming in view of above-mentioned prior art, and a kind of shortcoming and deficiency that exists in the prior art that solve is provided, and greatly reduces the podium type pier footing and the construction process thereof of pier footing construction volume and consumption of raw materials.
According to the present invention, a kind of construction process of podium type pier footing is provided, this method may further comprise the steps:
1. cleaning is excavated in the zone of the pier footing that will build;
2. the water conservancy project journey is enclosed in the zone that is cleared;
3. adopt underwater concrete to carry out back cover to enclosing the wetting system bottom;
4. the continuation of the zone behind the back cover is cut a hole by the rectangle that designs or other shape and dig, until design elevation, thus the foundation ditch of formation podium type pier footing;
5. to cut a hole descending reinforcing cage in the foundation ditch that digs out;
6. fluid concrete in foundation ditch forms the podium type pier footing;
Compare with expansion formula pier footing with original clump of piles formula pier footing, the effect that the present invention produced is very remarkable, greatly reduce the concrete work amount, the excavated volume of basement rock only is the nearly 1/10th of prior art, and has reduced difficulty of construction and construction risk.
Description of drawings
Fig. 1 is the schematic diagram that water makes up expansion formula pier footing that encloses of prior art;
Fig. 2 is the schematic diagram of the clump of piles formula pier footing of prior art;
Fig. 3 A to Fig. 3 E is for implementing the schematic flow sheet of one embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing, further understand feature of the present invention by detailed description to preferred embodiment.
With reference to Fig. 3 A to Fig. 3 E, at first according to the selected position of designing institute, clean out and place the zone 1 of enclosing wetting system 2, to enclose wetting system 2 then sinks in the zone 1, enclose wetting system 2 in the present embodiment and use circular double-walled steel cofferdam, sinking double-walled steel cofferdam is to substrate, and between the wall of cofferdam, fill concrete or jackstone mud jacking, form the strong water-bound that encloses, in order further to seal the bottom in described cofferdam, use bottom, 3 pairs of cofferdam of underwater concrete to carry out back cover, can be thereby guaranteed to enclose wetting system water on every side to its internal penetration.After will enclosing water in the wetting system 2 and extracting out, in the bottom, cofferdam the zone behind the back cover continued to cut a hole by the rectangle of design or other shape and dig,, thereby form the foundation ditch 4 of podium type pier footing until design elevation; To cut a hole descending reinforcing cage and concreting formation podium type pier footing 5 in the foundation ditch 4 that digs out, after building out podium type pier footing 5, directly on this basis, build bridge pier 6, the area of the cross section of this bridge pier 6 and the cross section of this pier footing is unanimous on the whole, thereby can reduce the input of a large amount of construction manpower, equipment and material.
In order more to clearly demonstrate feature of the present invention, existing clump of piles formula pier footing and expansion formula pier footing with podium type pier footing of the present invention and prior art compares.
As shown in Figure 1, adopt the pier footing of the expansion formula of 33.5 meters * 27.5 meters planar dimensions, foundation bed is arranged on absolute altitude-15.9 meter, high 3.4 meters as the water surface, normal excavation construction can't be carried out in the basis, the double-walled steel cofferdam must be set,, should adopt steel cofferdam size shown in Figure 1 according to the planar dimension on basis.
Drafting cofferdam top mark height is 6 meters, and absolute altitude is-15.9 meters at the bottom of the cofferdam.According to this project scale, the rolled steel dosage of the every square metre of about 375.3kg of sidewall area in cofferdam, cofferdam sidewall area 3302.4m
2, so cofferdam steel quantity is: G
The cofferdam steel=0.3753 * 3302.4=1239 ton.
For guaranteeing the stable of cofferdam, No. 25 underwater concretes of 6 meters thickness should be poured into a mould in borehole wall bottom in cofferdam, and this part concrete quantity is 1315 cubic metres.
Be in acclive scar as pier footing, suppose that excavation adopts Fig. 1 pattern to carry out, according to No. 7 pier landform actual measurements of white stone bridge under the Fujian, its total excavated volume is 43464 cubic metres.
It is 4934 cubic metres that expansion formula pier footing uses No. 25 concrete quantity, and number of steel bars is 202 tons, adopts " highway engineering budgetary estimate, budget compilation way " to carry out cost and calculates, and this total cost that enlarges the pier footing of formula is 7,980,000 yuan.
If adopt clump of piles formula pier footing, the drilled pile area of platform is 384 square metres under the equal conditions, 110 tons of steel casing gross weights, pile foundation adopts 2.5 meters dark 14 meters drilled piles of 19 diameters, needs 368 cubic metres of pile foundation concrete sevens so, 1004 tons of steel, for the cushion cap that will make up, its cushion cap concrete is 7853 cubic metres, and 503 tons of reinforcing bars, the total cost of this clump of piles formula pier footing are 1,198 ten thousand yuan.
Under the equal conditions, adopt podium type pier footing of the present invention, the double-walled steel cofferdam is set, its steel quantity is 215 tons, and it is 1200 cubic metres that cofferdam wall and back cover use No. 25 underwater concrete quantity, and its excavated volume is 5508m
3It is 624 cubic metres that the podium type pier footing uses No. 50 concrete quantity, and number of steel bars is 140 tons, and total cost only is 2,060,000 yuan.
Three kinds of base form main materials and cost comparison sheet
| Expansion formula pier footing | Clump of piles formula pier footing | The podium type pier footing | |
| Concrete (cubic meter) | ????6173 | ????15221 | ????1824 |
| Steel (ton) | ????1517 | ????1617 | ????355 |
| Total cost (ten thousand yuan) | ????798 | ????1198 | ????206 |
This shows that podium type pier footing engineering quantity is few, difficulty of construction is little, and cost is low, and the duration is short, has good social benefit and economic benefit.
The above is the preferred embodiments of the present invention only, is not the scope that is used for limiting the embodiment of the invention.Those of ordinary skill in the art can not break away under the spirit of the present invention, makes various changes and replacement, and the equalization of being done according to the present patent application claim changes and modifies in every case, all should fall into claim of the present invention and contain.
Claims (2)
1. the construction process of a podium type pier footing, this method may further comprise the steps:
1) cleaning is excavated in the zone of the pier footing that will build;
2) the water conservancy project journey is enclosed in the zone that is cleared;
3) adopt underwater concrete to carry out back cover to enclosing the wetting system bottom;
4) zone behind the back cover is continued to cut a hole by the rectangle of design or other shape dig,, thereby form the foundation ditch of podium type pier footing until design elevation;
5) to cut a hole descending reinforcing cage in the foundation ditch that digs out;
6) fluid concrete in foundation ditch forms the podium type pier footing.
2. the construction process of pier footing according to claim 1 is characterized in that step 2) in adopt circular double-walled steel cofferdam to enclose the water conservancy project journey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153624 CN1292127C (en) | 2003-08-15 | 2003-08-15 | Podium type bridge pier foundation structure method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153624 CN1292127C (en) | 2003-08-15 | 2003-08-15 | Podium type bridge pier foundation structure method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1580411A true CN1580411A (en) | 2005-02-16 |
| CN1292127C CN1292127C (en) | 2006-12-27 |
Family
ID=34580120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03153624 Expired - Fee Related CN1292127C (en) | 2003-08-15 | 2003-08-15 | Podium type bridge pier foundation structure method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1292127C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672007B (en) * | 2008-09-12 | 2011-08-17 | 株式会社大宇建设 | Constructing method of precast pier footing for bridge |
| CN105220699A (en) * | 2015-09-21 | 2016-01-06 | 中铁建大桥工程局集团第一工程有限公司 | Cofferdam construction method |
| CN105966561A (en) * | 2006-03-12 | 2016-09-28 | 严建军 | Ship body structure |
| CN111576457A (en) * | 2020-05-28 | 2020-08-25 | 四川公路桥梁建设集团有限公司 | Construction method of underwater deep buried structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100246571A1 (en) | 2009-03-30 | 2010-09-30 | Avaya Inc. | System and method for managing multiple concurrent communication sessions using a graphical call connection metaphor |
-
2003
- 2003-08-15 CN CN 03153624 patent/CN1292127C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966561A (en) * | 2006-03-12 | 2016-09-28 | 严建军 | Ship body structure |
| CN101672007B (en) * | 2008-09-12 | 2011-08-17 | 株式会社大宇建设 | Constructing method of precast pier footing for bridge |
| CN105220699A (en) * | 2015-09-21 | 2016-01-06 | 中铁建大桥工程局集团第一工程有限公司 | Cofferdam construction method |
| CN111576457A (en) * | 2020-05-28 | 2020-08-25 | 四川公路桥梁建设集团有限公司 | Construction method of underwater deep buried structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1292127C (en) | 2006-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108193642B (en) | Revetment reinforcing facility and construction method thereof | |
| Sokolov et al. | Preserving the natural landscape on the construction site for sustainable ecosystem | |
| CN112609591A (en) | Construction method for deep-water shallow-covering-layer fully-socketed bridge foundation | |
| CN1292127C (en) | Podium type bridge pier foundation structure method | |
| CN106988337B (en) | It is a kind of for reducing the reinforcement means of bar shaped shallow foundation house differential settlement | |
| US11124937B1 (en) | Rapid consolidation and compaction method for soil improvement of various layers of soils and intermediate geomaterials in a soil deposit | |
| CN110700270B (en) | Construction method for non-drainage earthwork excavation of ultra-deep foundation pit | |
| CN115874570A (en) | Supporting structure of deep and narrow river channel and construction method thereof | |
| Kempfert et al. | Experiences on dike foundations and land fills on very soft soils | |
| Auvinet-Guichard et al. | Construction of deep tunnel shafts in Mexico city soft clays by the flotation method | |
| CN115506382A (en) | Construction method for pile plate wall of island building platform | |
| CN109783878A (en) | Debris flow gully geological disaster data processing method and system, data processing terminal | |
| Asthana et al. | Recent advances in dam engineering | |
| CN114232602A (en) | Underground continuous pile construction process | |
| JP2023534788A (en) | Rapid consolidation and compaction methods for soil improvement of various layers of intermediate geological material within soils and soil sediments | |
| CN108532611A (en) | A kind of foundation pit supporting construction and construction method | |
| Hwang et al. | Design and construction of deep excavations in Taiwan | |
| CN214061668U (en) | Steel sheet pile cofferdam construction structure of shallow sand-covered gravel river bed | |
| CN109457725B (en) | H-shaped concrete plate assembled ecological retaining wall | |
| US20220235531A1 (en) | Rapid consolidation and compaction method for soil improvement of various layers of soils and intermediate geomaterials in a soil deposit | |
| Marinichev et al. | Regulation of additional settlements of dense urban infrastructure objects during execution of deep excavations and raft-pile foundation of high-rise buildings | |
| CN113882418A (en) | Construction method of underground building pipe pile group foundation in deep soft soil area | |
| CN1149095A (en) | Foundation structure of hollow well digging and its practice | |
| Wang | Construction Technology of Composite Cofferdam for Main Pier Bearing Platform of Dongjiang Lichuan Bridge | |
| Sooysmith | Concerning foundations for heavy buildings in New York City |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061227 Termination date: 20200815 |