CN205134193U - Bridge owner mound cushion cap underground structure on gentle slope riverbed basement rock - Google Patents
Bridge owner mound cushion cap underground structure on gentle slope riverbed basement rock Download PDFInfo
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- CN205134193U CN205134193U CN201520550258.9U CN201520550258U CN205134193U CN 205134193 U CN205134193 U CN 205134193U CN 201520550258 U CN201520550258 U CN 201520550258U CN 205134193 U CN205134193 U CN 205134193U
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Abstract
The utility model discloses a bridge owner mound cushion cap underground structure on gentle slope riverbed basement rock, build the island including a cofferdam, its characterized in that, the cofferdam is built the island and is provided with steel sheet pile stagnant water curtain around, steel sheet pile stagnant water curtain constitute by the vertical steel sheet pile of arranging side by side of a plurality of, adjacent steel sheet pile side interlock each other forms quadrangle stagnant water curtain, steel sheet pile stagnant water curtain inboard is provided with the steel -pipe pile and supports the curtain, the steel -pipe pile support the curtain and constitute by the vertical steel -pipe pile of arranging side by side of a plurality of, the steel -pipe pile supports the curtain inboard and is provided with the angle steel crossbeam, the angle steel crossbeam closely the laminating support the curtain at the steel -pipe pile and inboard and support the reinforced liner with steel -pipe pile welding formation quadrangle crossbeam together, the utility model discloses effectively realize the stagnant water, waterproof of foundation ditch, the smooth construction of cushion cap deep basal pit excavation construction of guarantee aquatic and cushion cap part when guaranteeing foundation ditch safety, improves construction progress and quality, reduction construction cost.
Description
Technical field
The utility model relates to a kind of foundation pit supporting construction building Main Pier of Bridges cushion cap on riverbed, gentle slope basement rock.
Background technology
Large bridge construction in the wild and construction in, often run into crossing river channel, the large bridge of Jiang Dao and stop to lead the way engineering construction construction, the main pier of described large bridge is a lot, and different main pier bearing platform can be built in different positions, in the face of different geographical position, lineament and geological structure.Such as when the Main Pier of Bridges cushion cap of crossing river channel, Jiang Dao is built, part main pier bearing platform can build the position, riverbed, gentle slope at crossing river channel, Jiang Dao, especially by position, riverbed, riverain gentle slope, at this moment Main Pier of Bridges cushion cap embeds riverbed strongly weathered sand-rock certain depth, and riverbed surface is the cobble covering layer of about half meter, riverbed geology is severely-weathered silty and middle weathering silty.
Because Main Pier of Bridges cushion cap is reinforced concrete construction, its size is larger, main pier bearing platform on the one hand needs carrying bridge weight, to its construction quality and security requirement higher, on the other hand, described main pier bearing platform needs in the face of complicated lineament and geological structure, Ji Shi navigation channel, its side, main pier bearing platform and foundation pit construction must immerse pressure in the face of the SEA LEVEL VARIATION of the water surface and river, side slope construction by navigation channel is unstable, faced by hydraulic pressure comparatively large and pressure change exists uncertain, owing to manually filling the material ground building cofferdam, island, there is water permeability in addition, during construction, side slope seepage is serious, slope instability is very easily caused even to lead to landslide security incident.A couple of days at least main pier bearing platform engineering time of bridge, several months at most, as the boundary time of flood season and non-flood period, more should pay attention to its working security and quality, so the construction of described Main Pier of Bridges cushion cap foundation ditch needs in the face of complicated geology, hydrology structure, construction requirement is higher.
The construction of prior art, especially can overcome hard architectonic static-pressure pile planting machine construction for general employing of the Main Pier of Bridges foundation pit supporting construction construction on riverbed, gentle slope basement rock, build in cofferdam and island carries out the construction of cushion cap foundation ditch and build main pier bearing platform on foundation ditch.But prior art cost is very high, in addition, also undesirable to the effect of foundation ditch inner waterproofing, sealing, so need a kind of foundation pit supporting construction more preferably building Main Pier of Bridges cushion cap on riverbed, gentle slope basement rock.
Utility model content
The purpose of this utility model is for prior art defect; a kind of foundation pit supporting construction building Main Pier of Bridges cushion cap on riverbed, gentle slope basement rock is provided; the technical problem that the utility model solves is on riverbed, the gentle slope basement rock of lineament and geology, hydrology complex structure, build the cushion cap foundation pit supporting construction of Main Pier of Bridges; effectively realize the sealing of foundation ditch, waterproof; ensure the smooth construction of underwater support table deep pit construction and cushion cap part; while guaranteeing deep pit monitor; improve construction speed and quality, reduce construction cost.
The technical solution of the utility model is as described below:
Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, a kind of gentle slope basement rock, comprise a cofferdam and build island, it is characterized in that, described cofferdam is built island and surrounding is provided with steel sheet pile water-stop curtain, the steel sheet pile that described steel sheet pile water-stop curtain is vertically arranged side by side by several is formed, described adjacent steel sheet pile side is engaged each other and forms quadrangle water-stop curtain, be provided with steel pipe pile inside described steel sheet pile water-stop curtain and support curtain, the steel pipe pile that described steel pipe pile support curtain is vertically arranged side by side by several is formed, described adjacent steel pipe pile side forms quadrangle apart from 2-3 rice to each other and supports curtain, described steel pipe pile supports inside curtain and is provided with angle steel crossbeam, described angle steel crossbeam fits tightly and to support inside curtain at steel pipe pile and to be welded together to form quadrangle cross beam support reinforced liner with steel pipe pile, steel pipe support beam and steel tube girder is welded with between the angle steel crossbeam of described different sides, excavate in the region that described quadrangle crossbeam reinforcing curtain is formed and have Main Pier of Bridges cushion cap foundation ditch, foundation ditch built-in bridging beam main pier bearing platform.
According to the utility model of said structure, be further characterized in that, described each steel sheet pile cross section is " C " type structure, and adjacent steel sheet pile is relative between two, and side is engaged formation water-stop curtain each other.
According to the utility model of said structure, be further characterized in that, described each steel sheet pile and steel pipe pile go deep into cofferdam and to build under the ground of island in lithosphere.
According to the utility model of said structure, be further characterized in that, between described angle steel crossbeam and steel pipe pile, be welded with fixing bracket.
According to the utility model of said structure, steel sheet pile water-stop curtain can effective sealing, steel pipe pile supports curtain and quadrangle cross beam support reinforced liner and steel pipe support beam and steel tube girder and can form powerful support to steel sheet pile water-stop curtain and fix, and guarantees the stability of supporting and protection structure.Cushion cap foundation ditch is formed in the quadrangle cross beam support reinforced liner that island is built in cofferdam, the smooth construction of Main Pier of Bridges cushion cap can be carried out, effectively to overcome by the geology of side, navigation channel complexity, hydrology structure and feature the adverse effect of Main Pier of Bridges bearing platform construction, solve river water level change, river pressure and river immerse the construction problem that foundation ditch affects Main Pier of Bridges cushion cap.
According to the construction method of the Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, above-mentioned gentle slope basement rock, it is characterized in that, comprise the steps:
1) build island in the intersection construction formation cofferdam in riverbed, gentle slope basement rock and navigation channel, by the landfill of sandstone dirt bed, island is built in the cofferdam formed higher than urban river water plane;
2) the edge part on island is built in cofferdam, inserted to play steel pipe pile, form quadrangle steel pipe pile and support curtain: because steel pipe pile needs into rock, so first scene adopts Spiral digging machine to utilize casing to carry out cutting, casing needed for cutting adopts two steel pipe casings to be used alternatingly, and when lower steel pipe casing, ensures its verticality, after cutting completes in a casing, casing is extracted and inserts steel pipe pile immediately;
3) build on island in cofferdam, after steel pipe pile inserted to play completes, along outer edge inserted to play steel sheet pile outside steel pipe pile, described adjacent steel sheet pile side is engaged each other and forms quadrangle water-stop curtain;
4) angle steel crossbeam is set inside steel pipe pile support curtain, described angle steel crossbeam fits tightly and to support inside curtain at steel pipe pile and to be welded together to form quadrangle cross beam support reinforced liner with steel pipe pile, welded steel pipe brace summer and steel tube girder between the angle steel crossbeam of different sides, weld some fixing brackets between different angle steel crossbeams and the steel pipe pile of adjacent upright;
5) Main Pier of Bridges cushion cap foundation ditch is excavated, foundation ditch built-in bridging beam main pier bearing platform in the region that described quadrangle cross beam support reinforced liner is formed;
6) in described foundation ditch, the infiltration of a small amount of river adopts water pumper uninterruptedly to extract out, is convenient to the smooth construction of carrying out Main Pier of Bridges cushion cap.
According to technique scheme, after bearing platform construction completes, first should backfill foundation ditch, adopt Cast-in-situ Piles in Sand-filling and pour water closely knit, make internal and external pressure balance, after angle steel crossbeam, steel pipe support beam and steel tube girder are all removed, pile driver can be adopted directly to extract steel sheet pile and steel pipe pile.
According to the utility model of said structure and construction method, its beneficial effect is: steel sheet pile water-stop curtain can effective sealing, steel pipe pile supports curtain and angle steel crossbeam, steel pipe support beam and steel tube girder can form powerful support and reinforcement protection to steel sheet pile water-stop curtain, guarantee the stability of supporting and protection structure, support curtain inside at steel pipe pile and form cushion cap foundation ditch, the smooth construction of Main Pier of Bridges cushion cap can be carried out, effectively overcome the geology by side, navigation channel complexity, hydrology structure and feature are to the adverse effect of Main Pier of Bridges bearing platform construction, solve river water level change, river pressure and river immerse the construction problem that foundation ditch affects Main Pier of Bridges cushion cap, the utility model effectively can realize the sealing of foundation ditch, waterproof, ensure the smooth construction of underwater support table deep pit construction and cushion cap part, while guaranteeing deep pit monitor, improve construction speed and quality, reduce construction cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is conducted further description:
Fig. 1 is the Main Pier of Bridges cushion cap foundation pit supporting construction vertical section structure schematic diagram on riverbed, the utility model gentle slope basement rock;
Fig. 2 is the three-dimensional section structure schematic diagram of Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, the utility model gentle slope basement rock;
Fig. 3 is the Main Pier of Bridges cushion cap foundation pit supporting construction top view on riverbed, the utility model gentle slope basement rock.
In the drawings, 1, island is built in cofferdam; 2, cushion cap; 3, main pier; 4, riverbed, gentle slope basement rock; 5, steel pipe pile; 6, steel sheet pile; 7, river; 8, angle steel crossbeam; 9, steel pipe support beam; 10, steel tube girder; 11, bracket; 12, foundation ditch.
Detailed description of the invention
As Fig. 1, 2, shown in 3, Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, a kind of gentle slope of the utility model basement rock, comprise a cofferdam and build island 1, it is characterized in that, described cofferdam is built island 1 and surrounding is provided with steel sheet pile water-stop curtain, the steel sheet pile 6 that described steel sheet pile water-stop curtain is vertically arranged side by side by several is formed, described adjacent steel sheet pile 6 side is engaged each other and forms quadrangle water-stop curtain, be provided with steel pipe pile inside described steel sheet pile water-stop curtain and support curtain, the steel pipe pile 5 that described steel pipe pile support curtain is vertically arranged side by side by several is formed, described adjacent steel pipe pile 5 side forms quadrangle apart from 2-3 rice to each other and supports curtain, described steel pipe pile supports inside curtain and is provided with angle steel crossbeam 8, described angle steel crossbeam 8 fits tightly and to support inside curtain at steel pipe pile and to be welded together to form quadrangle cross beam support reinforced liner with steel pipe pile 5, steel pipe support beam 9 and steel tube girder 10 is welded with between the angle steel crossbeam 8 of described different sides, excavate in the region that described quadrangle crossbeam reinforcing curtain is formed and have Main Pier of Bridges cushion cap foundation ditch 12, foundation ditch 12 built-in bridging beam main pier bearing platform 2.
As shown in Figure 3, described each steel sheet pile 6 cross section is " C " type structure, and adjacent steel sheet pile 6 is relative between two, and side is engaged formation water-stop curtain each other.
As shown in Figure 1, described each steel sheet pile and steel pipe pile go deep into cofferdam and to build under the ground of island in lithosphere.
As shown in Figure 1, fixing bracket 11 is welded with between described angle steel crossbeam 8 and steel pipe pile 5.
As shown in Figure 1, 2, 3, the construction method of the Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, above-mentioned gentle slope basement rock, is characterized in that, comprise the steps:
1) build island in the intersection construction formation cofferdam in riverbed, gentle slope basement rock 4 and navigation channel, by the landfill of sandstone dirt bed, island 1 is built in the cofferdam formed higher than urban river water plane;
2) the edge part on island 1 is built in cofferdam, inserted to play steel pipe pile 5, form quadrangle steel pipe pile and support curtain: because steel pipe pile 5 needs into rock, so first scene adopts Spiral digging machine to utilize casing to carry out cutting, casing needed for cutting adopts two steel pipe casings to be used alternatingly, and when lower steel pipe casing, ensures its verticality, after cutting completes in a casing, casing is extracted and inserts steel pipe pile 5 immediately;
3) build on island 1 in cofferdam, after steel pipe pile 5 inserted to play completes, along outer edge inserted to play steel sheet pile 6 outside steel pipe pile 5, described adjacent steel sheet pile 6 side is engaged each other and forms quadrangle water-stop curtain;
4) angle steel crossbeam 8 is set inside steel pipe pile support curtain, described angle steel crossbeam 8 fits tightly and to support inside curtain at steel pipe pile and to be welded together to form quadrangle cross beam support reinforced liner with steel pipe pile 5, welded steel pipe brace summer 9 and steel tube girder 10 between the angle steel crossbeam 8 of different sides, weld some fixing brackets 11 between different angle steel crossbeams 8 and the steel pipe pile 5 of adjacent upright;
5) Main Pier of Bridges cushion cap foundation ditch 12 is excavated, foundation ditch 12 built-in bridging beam main pier bearing platform 2 in the region that described quadrangle cross beam support reinforced liner is formed;
6) in described foundation ditch 12, the infiltration of a small amount of river adopts water pumper uninterruptedly to extract out, is convenient to the smooth construction of carrying out Main Pier of Bridges cushion cap.
The utility model applicating example:
Namely Zigong City Fushun County, Sichuan Province of China a small bay in a river Jiang Sanqiao 3# cushion cap deep foundation pit supporting structure and construction method are application examples of the present utility model, the local Fu Shi town of large spanning and East Lake town, across a small bay in a river rivers, applying 3# cushion cap deep foundation pit supporting structure of the present utility model is that bridge smooth construction lays the foundation, after this project construction is completed, be connected with Sichuan provincial highway S305 line, formed rich and smooth in city circuit, greatly improve the traffic of Fushun County access way.
Although the utility model describes with reference to the above embodiments; but those of ordinary skill in the art very clearly can recognize that above embodiment is only for illustration of the utility model completely; wherein can make various changes and revise and not depart from the utility model in a broad sense; so be not that conduct is to restriction of the present utility model; as long as in spirit of the present utility model, the change of above-described embodiment, distortion all will be fallen within protection domain that the utility model requires.
Claims (4)
1. the Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, gentle slope basement rock, comprise a cofferdam and build island, it is characterized in that, described cofferdam is built island and surrounding is provided with steel sheet pile water-stop curtain, the steel sheet pile that described steel sheet pile water-stop curtain is vertically arranged side by side by several is formed, described adjacent steel sheet pile side is engaged each other and forms quadrangle water-stop curtain, be provided with steel pipe pile inside described steel sheet pile water-stop curtain and support curtain, the steel pipe pile that described steel pipe pile support curtain is vertically arranged side by side by several is formed, described adjacent steel pipe pile side forms quadrangle apart from 2-3 rice to each other and supports curtain, described steel pipe pile supports inside curtain and is provided with angle steel crossbeam, described angle steel crossbeam fits tightly and to support inside curtain at steel pipe pile and to be welded together to form quadrangle cross beam support reinforced liner with steel pipe pile, steel pipe support beam and steel tube girder is welded with between the angle steel crossbeam of described different sides, excavate in the region that described quadrangle crossbeam reinforcing curtain is formed and have Main Pier of Bridges cushion cap foundation ditch, foundation ditch built-in bridging beam main pier bearing platform.
2. the Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, gentle slope according to claim 1 basement rock, be further characterized in that, described each steel sheet pile cross section is " C " type structure, and adjacent steel sheet pile is relative between two, and side is engaged formation water-stop curtain each other.
3. the Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, gentle slope according to claim 1 basement rock, is further characterized in that, described each steel sheet pile and steel pipe pile go deep into cofferdam and to build under the ground of island in lithosphere.
4. the Main Pier of Bridges cushion cap foundation pit supporting construction on riverbed, gentle slope according to claim 1 basement rock, is further characterized in that, is welded with fixing bracket between described angle steel crossbeam and steel pipe pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520550258.9U CN205134193U (en) | 2015-07-28 | 2015-07-28 | Bridge owner mound cushion cap underground structure on gentle slope riverbed basement rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520550258.9U CN205134193U (en) | 2015-07-28 | 2015-07-28 | Bridge owner mound cushion cap underground structure on gentle slope riverbed basement rock |
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| CN205134193U true CN205134193U (en) | 2016-04-06 |
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| CN201520550258.9U Expired - Fee Related CN205134193U (en) | 2015-07-28 | 2015-07-28 | Bridge owner mound cushion cap underground structure on gentle slope riverbed basement rock |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049281A (en) * | 2016-06-01 | 2016-10-26 | 中国铁建大桥工程局集团有限公司 | Deep-water construction method of bridge at water pebble soil and argillaceous sandstone areas and auxiliary working platform |
| CN106351232A (en) * | 2016-08-30 | 2017-01-25 | 中国建筑西南勘察设计研究院有限公司 | Internal rigid frame support foundation pit supporting structure and construction method thereof |
| CN106400780A (en) * | 2016-08-31 | 2017-02-15 | 华北水利水电大学 | Pressure-reduction and shock-resistant sheet-pile wall structure |
| CN108222016A (en) * | 2018-02-01 | 2018-06-29 | 中纬建设工程有限公司 | A kind of support element of deep foundation pit fender post |
| CN108775020A (en) * | 2018-07-05 | 2018-11-09 | 哈尔滨工业大学 | Self-balancing steel sheet-pile cofferdam and its method for repairing underwater concrete liner plate |
| CN108824452A (en) * | 2018-08-29 | 2018-11-16 | 广东工业大学 | A kind of foundation pit enclosure support system |
-
2015
- 2015-07-28 CN CN201520550258.9U patent/CN205134193U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049281A (en) * | 2016-06-01 | 2016-10-26 | 中国铁建大桥工程局集团有限公司 | Deep-water construction method of bridge at water pebble soil and argillaceous sandstone areas and auxiliary working platform |
| CN106351232A (en) * | 2016-08-30 | 2017-01-25 | 中国建筑西南勘察设计研究院有限公司 | Internal rigid frame support foundation pit supporting structure and construction method thereof |
| CN106400780A (en) * | 2016-08-31 | 2017-02-15 | 华北水利水电大学 | Pressure-reduction and shock-resistant sheet-pile wall structure |
| CN108222016A (en) * | 2018-02-01 | 2018-06-29 | 中纬建设工程有限公司 | A kind of support element of deep foundation pit fender post |
| CN108775020A (en) * | 2018-07-05 | 2018-11-09 | 哈尔滨工业大学 | Self-balancing steel sheet-pile cofferdam and its method for repairing underwater concrete liner plate |
| CN108775020B (en) * | 2018-07-05 | 2020-04-28 | 哈尔滨工业大学 | Self-balancing steel sheet pile cofferdam and method for repairing underwater concrete lining plate by using same |
| CN108824452A (en) * | 2018-08-29 | 2018-11-16 | 广东工业大学 | A kind of foundation pit enclosure support system |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20200728 |
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| CF01 | Termination of patent right due to non-payment of annual fee |