CN204898699U - Bridge caisson foundation - Google Patents
Bridge caisson foundation Download PDFInfo
- Publication number
- CN204898699U CN204898699U CN201520583604.3U CN201520583604U CN204898699U CN 204898699 U CN204898699 U CN 204898699U CN 201520583604 U CN201520583604 U CN 201520583604U CN 204898699 U CN204898699 U CN 204898699U
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- China
- Prior art keywords
- caisson
- top board
- bridge
- side plate
- base plate
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Abstract
The utility model discloses a bridge caisson foundation, it includes roof, caisson and bottom plate, on the pier set up the roof, the bottom plate setting was on the supporting course, the caisson is the upper and lower communicating frame box structure compriseed multilateral curb plate, is sidelong the slope in the multilateral curb plate bottom, and the cross -section is the closed angle form, bottom plate and caisson bottom and roof be the back castable with the caisson top, are equipped with connecting reinforcement between roof and bottom plate and the caisson respectively, and the caisson sets up to one or more, and the caisson sets up when a plurality of, passes through the connecting piece connection between the caisson. Compared with the prior art, the utility model discloses need not to excavate the foundation ditch at whole work progress, more be applicable to the geological conditions that the supporting course is deep and weak, groundwater is abundant, and because the caisson is prefabricated for the mill, can guarantee engineering construction quality.
Description
Technical field
The utility model belongs to ground foundation engineering field, relates to a kind of bridge foundation, is specifically related to a kind of bridge laying foundation.
Background technology
Bridge foundation is the structure of bridge foot, is directly seated on rock or soil base, and its top connects bridge pier or abutment, and effect ensures pier safety and by dynamic changes process to ground.Therefore, in order to safety and the normal use of full-bridge, require that will there be enough intensity, rigidity and resistance to overturning in ground and basis, make it not produce excessive horizontal displacement or differential settlement.Building of bridge foundation, occupies very consequence in whole bridge engineering.
Bridge foundation of the prior art, floor is arranged on bearing stratum, in construction, need excavation pit to construct, when the above thicker soil of bearing stratum and very soft time, be often difficult to excavate out foundation ditch simply, especially when upper soil horizon water content is very large, cannot foundation ditch be formed at all, bring great difficulty to construction, even if form foundation ditch, also cannot ensure concrete pouring quality, bring hidden danger of quality to engineering.
Utility model content
For above-mentioned the deficiencies in the prior art, the utility model provides a kind of bridge laying foundation.
The technical solution adopted in the utility model is:
A kind of bridge laying foundation, it comprises top board, caisson and base plate, and bridge pier arranges on top board, and base plate is arranged on bearing stratum; Caisson is the framework box body structure communicated up and down be made up of polygon side plate, and be sidelong slope in polygon side plate bottom, cross section is tip-angled shape; Bottom base plate and caisson and top board and caisson top is rear castable, top board and be respectively equipped with connecting reinforcement between base plate and caisson, and caisson is set to one or more, when caisson is set to multiple, is connected between caisson by connector.
Connecting reinforcement is divided into vertical connecting reinforcement and lateral connection reinforcing bar, and the top of vertical connecting reinforcement and bottom are stretched in the polygon side plate of top board and caisson respectively, in the polygon side plate bottom that caisson is stretched at the two ends of lateral connection reinforcing bar respectively and base plate.
Bridge pier and top board are integrated builds shaping.
Further, described caisson is the framework box body structure communicated up and down be made up of four side plates.
Connector is anchor, and the polygon side plate of caisson is provided with one or more eyelet for installing anchor; The eyelet at the same position place on side plate adjacent between caisson is connected and is connected by anchor.
Caisson bottom the utility model is transported to scene after prefabricated, and then by the soil body within the scope of excavation caisson, caisson is sunk gradually, whole work progress is without the need to excavation pit.Compared with prior art, be more applicable to that bearing stratum is deep and weak, the geological conditions of rich groundwater; And due to caisson be prefabrication, can engineering construction quality be ensured.When adopting multiple caisson, the weight of single caisson can be reduced, making caisson be convenient to transport, being applicable to the job location that conditions of transportation is very poor.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of anchor in the utility model.
Fig. 3 is the top plan view of the utility model caisson.
Fig. 4 is the top plan view of the utility model embodiment 1 caisson.
Fig. 5 is the top plan view of the utility model embodiment 2 caisson.
Fig. 6 is the structural representation of prior art.
Reference numeral: bridge pier 1, top board 2, vertical connecting reinforcement 3, caisson 4, lateral connection reinforcing bar 5, base plate 6, anchor 7, anchor cable 8, ground tackle 9.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described further, but scope of the present utility model is not limited to following embodiment.
Embodiment 1:
A kind of bridge laying foundation, it comprises top board 2, caisson 4 and base plate 6, and bridge pier 1 arranges on top board 2, and base plate 6 is arranged on bearing stratum; Caisson 4 is the framework box body structure communicated up and down be made up of four side plates, and four side plate bottom inside put slope, and cross section is tip-angled shape; Bottom base plate 6 and caisson 4 and top board 2 be rear castable with caisson 4 top, top board 2 and be respectively equipped with connecting reinforcement between base plate 6 and caisson 4.
Caisson 4 is two, and two caissons 4 are consolidated by anchor 7.
Connecting reinforcement is divided into vertical connecting reinforcement 3 and lateral connection reinforcing bar 5, and the top of vertical connecting reinforcement 3 and bottom are stretched in the polygon side plate of top board 2 and caisson 4 respectively, in the polygon side plate bottom that caisson 4 is stretched at the two ends of lateral connection reinforcing bar 5 respectively and base plate 6.
Bridge pier 1 and top board 2 are integrated builds shaping.
Connector is anchor 7, and the polygon side plate of caisson 4 is provided with one or more eyelet for installing anchor 7; The eyelet at the same position place on side plate adjacent between caisson 4 is connected and is connected by anchor 7.Anchor 7 is made up of anchor cable 8 and the ground tackle 9 being placed in two ends.
Caisson 4 prefabrication can be transported to job site again, then by digging out the soil body of caisson 4 internal range, caisson 4 is progressively sunk, until arrive bearing stratum bottom caisson 4, then bottom caisson, cast-in-place concrete forms base plate 6, and top board 2 and bridge pier 1 are formed at top again fluid concrete.
Embodiment 2:
On the basis of embodiment 1, caisson 4 is four, and four caissons 4 are consolidated by anchor 7.
Anchor 7 is made up of anchor cable 8 and the ground tackle 9 being placed in two ends.
Caisson 4 is provided with multiple eyelet for fixedly mounting anchor 7, and the eyelet at different caisson 4 same position place can be connected.
This bridge laying foundation Specific construction order is as follows:
(1) precast caisson 4, vertical connecting reinforcement 3 and lateral connection reinforcing bar 5 in advance on caisson 4, and are transported to job site, locate.
(2) excavate the caisson 4 internal range soil body, caisson 4 is progressively sunk, in sinking watching, can adopt the mode of placing weight at caisson 4 top, auxiliary caisson 4 sinks.
(3) caisson 4 progressively sinks down into bearing stratum design elevation.
(4) formwork concreting forms base plate 6.
(5) other caisson 4 adopts preceding method to sink down into design attitude, builds and forms base plate 6, be consolidated by adjacent caisson 4 by anchor 7.
(6) formed by integrally casting concrete forms bridge pier 1 and top board 2.
Claims (5)
1. a bridge laying foundation, it comprises top board (2), caisson (4) and base plate (6), bridge pier (1) arranges on top board (2), base plate (6) is arranged on bearing stratum, it is characterized in that, caisson (4) is the framework box body structure communicated up and down be made up of polygon side plate, and be sidelong slope in polygon side plate bottom, cross section is tip-angled shape; Base plate (6) and caisson (4) bottom and top board (2) and caisson (4) top are rear castable, top board (2) and be respectively equipped with connecting reinforcement between base plate (6) and caisson (4), caisson (4) is set to one or more, when caisson (4) is set to multiple, caisson is connected by connector between (4).
2. a kind of bridge laying foundation as claimed in claim 1, it is characterized in that, connecting reinforcement is divided into vertical connecting reinforcement (3) and lateral connection reinforcing bar (5), the top of vertical connecting reinforcement (3) and bottom are stretched in the polygon side plate of top board (2) and caisson (4) respectively, in the polygon side plate bottom that caisson (4) is stretched at the two ends of lateral connection reinforcing bar (5) respectively and base plate (6).
3. a kind of bridge laying foundation as claimed in claim 1 or 2, is characterized in that, described bridge pier (1) and top board (2) are integrated builds shaping.
4. a kind of bridge laying foundation as claimed in claim 1 or 2, is characterized in that, described caisson (4) is the framework box body structure communicated up and down be made up of four side plates.
5. a kind of bridge laying foundation as claimed in claim 1 or 2, is characterized in that, described connector is anchor (7), and the polygon side plate of caisson (4) is provided with one or more eyelet for installing anchor (7); The eyelet at the same position place on side plate adjacent between caisson (4) is connected and is connected by anchor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583604.3U CN204898699U (en) | 2015-08-06 | 2015-08-06 | Bridge caisson foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520583604.3U CN204898699U (en) | 2015-08-06 | 2015-08-06 | Bridge caisson foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204898699U true CN204898699U (en) | 2015-12-23 |
Family
ID=54920888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520583604.3U Expired - Fee Related CN204898699U (en) | 2015-08-06 | 2015-08-06 | Bridge caisson foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204898699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440796A (en) * | 2018-11-30 | 2019-03-08 | 中铁第四勘察设计院集团有限公司 | Suitable for the inverted T shaped precast caisson of deep water drift net area or shallow overburden basis and its construction method |
-
2015
- 2015-08-06 CN CN201520583604.3U patent/CN204898699U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440796A (en) * | 2018-11-30 | 2019-03-08 | 中铁第四勘察设计院集团有限公司 | Suitable for the inverted T shaped precast caisson of deep water drift net area or shallow overburden basis and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20151223 Termination date: 20170806 |