CN102493343A - Construction method for building trestle bridge piers in bedrock-exposed riverbed - Google Patents
Construction method for building trestle bridge piers in bedrock-exposed riverbed Download PDFInfo
- Publication number
- CN102493343A CN102493343A CN2011103808416A CN201110380841A CN102493343A CN 102493343 A CN102493343 A CN 102493343A CN 2011103808416 A CN2011103808416 A CN 2011103808416A CN 201110380841 A CN201110380841 A CN 201110380841A CN 102493343 A CN102493343 A CN 102493343A
- Authority
- CN
- China
- Prior art keywords
- bridge pier
- trestle
- bedrock
- building
- basement rock
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000010902 straw Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 17
- 238000009412 basement excavation Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method for building trestle bridge piers in a bedrock-exposed riverbed, wherein the bedrock-embedded trestle bridge piers are fixed by manually-excavated bedrock and concrete. The construction method comprises the following steps of: 1, building a temporary straw bag cofferdam; 2, removing water in the temporary cofferdam; 3, excavating foundation pits of the trestle bridge piers on the bedrock; and 4, pouring trestle steel pipe pile pier foundations in the foundation pits, so that the piers are embedded into the bedrock and are fixed with a foundation. The construction method disclosed by the invention can realize the purposes of rapid construction and reduced cost.
Description
Technical field
The present invention relates to a kind of job practices of in the riverbed of exposed bedrock, building the trestle bridge pier.
Background technology
At present; The construction bridge bridge pier generally adopts rig boring or crawler crane to join vibrating hammer in the riverbed of exposed bedrock; Cost is higher, progress is slow to adopt rig to hole; Adopt crawler crane to join that the vibrating hammer cost is high, progress is slow, and when the saturated compressive strength of single shaft of basement rock greatly the time, vibrating hammer can't be squeezed into the steel pipe pile bridge pier degree of depth of basement rock design demand.
Summary of the invention
The object of the present invention is to provide a kind of new job practices of in the riverbed of exposed bedrock, building the trestle bridge pier, the cost that prior art exists is higher to overcome, progress waits deficiency slowly.
Technical scheme of the present invention is following: the trestle bridge pier that embeds basement rock is fixed by hand excavation's basement rock, concrete, specifically may further comprise the steps:
Step 1 is built the interim cofferdam of straw bag;
Step 2 is removed the ponding in the interim cofferdam;
Step 3, excavation trestle bridge pier foundation ditch on basement rock;
Step 4 is built trestle steel pipe pile pier footing in foundation ditch, bridge pier embeds basement rock, with bridge pier and basic fixed.
In step 2, adopt water pumper that the ponding in the interim cofferdam is drained.
In step 3, adopt manual work, comprise that the crushing appliance that uses pneumatic pick is broken with basement rock, and excavate and transport.
In step 4, the half the concrete of cast inserts concrete to the steel pipe pile bridge pier of trestle then in the bridge pier foundation ditch, continues fluid concrete to basement rock surface, and the steel pipe pile bridge pier is laterally connected by design, and the trestle bridge pier is built and finished.
When in the riverbed of exposed bedrock, building the trestle bridge pier, confirm the planar dimension and the cross dimensions of trestle bridge pier according to working design, the interim cofferdam of build planar dimension outside, and remove ponding in the interim cofferdam, for the trestle bridge pier provides the construction plant.
The invention has the beneficial effects as follows that can construct simultaneously many places, progress is very fast, it is less to compare the mechanical execution potential safety hazard, reduces overall cost.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is described further.
A kind of job practices of in the riverbed of exposed bedrock, building the trestle bridge pier provided by the invention may further comprise the steps:
Step 1 is built the interim cofferdam of straw bag: adopt common straw bag to build interim cofferdam at the water surface during low or dry season.
Step 2 is removed the ponding in the interim cofferdam: adopt water pumper that the ponding in the interim cofferdam is drained, for formal foundation ditch cofferdam or trestle bridge pier provide the construction plant.
Step 3, excavation cofferdam foundation ditch or trestle bridge pier foundation ditch on basement rock: equipment such as use pneumatic pick are broken with basement rock, and excavate and transport.Foundation depth and cross dimensions are calculated according to instructions for use and are confirmed.
Step 4, in foundation ditch, build trestle steel pipe pile pier footing: the half the concrete of cast in the bridge pier foundation ditch, insert concrete to the steel pipe pile bridge pier of trestle then, continue fluid concrete to basement rock surface, the steel pipe pile bridge pier is laterally connected by design.The trestle bridge pier is built and is finished.
Claims (4)
1. job practices of in the riverbed of exposed bedrock, building the trestle bridge pier, it is characterized in that: the trestle bridge pier that embeds basement rock is fixed by hand excavation's basement rock, concrete, specifically may further comprise the steps:
Step 1 is built the interim cofferdam of straw bag;
Step 2 is removed the ponding in the interim cofferdam;
Step 3, excavation trestle bridge pier foundation ditch on basement rock;
Step 4 is built trestle steel pipe pile pier footing in foundation ditch, bridge pier embeds basement rock, with bridge pier and basic fixed.
2. job practices of in the riverbed of exposed bedrock, building the trestle bridge pier according to claim 1 is characterized in that: in step 2, adopt water pumper that the ponding in the interim cofferdam is drained.
3. job practices of in the riverbed of exposed bedrock, building the trestle bridge pier according to claim 1 is characterized in that: in step 3, adopt manual work, comprise that the crushing appliance that uses pneumatic pick is broken with basement rock, and excavate and transport.
4. job practices of in the riverbed of exposed bedrock, building the trestle bridge pier according to claim 1; It is characterized in that: in step 4; The half the concrete of cast inserts concrete to the steel pipe pile bridge pier of trestle then in the bridge pier foundation ditch, continues fluid concrete to basement rock surface; The steel pipe pile bridge pier is laterally connected by design, and the trestle bridge pier is built and is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103808416A CN102493343A (en) | 2011-11-25 | 2011-11-25 | Construction method for building trestle bridge piers in bedrock-exposed riverbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103808416A CN102493343A (en) | 2011-11-25 | 2011-11-25 | Construction method for building trestle bridge piers in bedrock-exposed riverbed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102493343A true CN102493343A (en) | 2012-06-13 |
Family
ID=46185199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103808416A Pending CN102493343A (en) | 2011-11-25 | 2011-11-25 | Construction method for building trestle bridge piers in bedrock-exposed riverbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102493343A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335171A (en) * | 2020-03-13 | 2020-06-26 | 山东省公路桥梁建设有限公司 | Construction method of steel trestle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004324340A (en) * | 2003-04-28 | 2004-11-18 | Nishimatsu Constr Co Ltd | Steel shell for footing foundation, bridge structure, bridge construction method, and three-dimensional intersection bridge construction method |
| JP2006028750A (en) * | 2004-07-12 | 2006-02-02 | Takenaka Doboku Co Ltd | Construction method of pier |
| CN101235648A (en) * | 2008-01-04 | 2008-08-06 | 贵州省桥梁工程总公司 | Underwater bridge foundation construction method |
| CN101962954A (en) * | 2010-09-27 | 2011-02-02 | 中铁大桥局集团第一工程有限公司 | Cylindrical steel boxed cofferdam and construction method thereof |
| CN102191777A (en) * | 2011-05-12 | 2011-09-21 | 广州市市政集团有限公司 | Steel sheet pile coefferdam structure and topdown construction method thereof |
-
2011
- 2011-11-25 CN CN2011103808416A patent/CN102493343A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004324340A (en) * | 2003-04-28 | 2004-11-18 | Nishimatsu Constr Co Ltd | Steel shell for footing foundation, bridge structure, bridge construction method, and three-dimensional intersection bridge construction method |
| JP2006028750A (en) * | 2004-07-12 | 2006-02-02 | Takenaka Doboku Co Ltd | Construction method of pier |
| CN101235648A (en) * | 2008-01-04 | 2008-08-06 | 贵州省桥梁工程总公司 | Underwater bridge foundation construction method |
| CN101962954A (en) * | 2010-09-27 | 2011-02-02 | 中铁大桥局集团第一工程有限公司 | Cylindrical steel boxed cofferdam and construction method thereof |
| CN102191777A (en) * | 2011-05-12 | 2011-09-21 | 广州市市政集团有限公司 | Steel sheet pile coefferdam structure and topdown construction method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335171A (en) * | 2020-03-13 | 2020-06-26 | 山东省公路桥梁建设有限公司 | Construction method of steel trestle |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20120613 |