CN104480903A - Panel joint structure for concrete panel rockfill dam and construction method of panel joint structure - Google Patents
Panel joint structure for concrete panel rockfill dam and construction method of panel joint structure Download PDFInfo
- Publication number
- CN104480903A CN104480903A CN201410763722.2A CN201410763722A CN104480903A CN 104480903 A CN104480903 A CN 104480903A CN 201410763722 A CN201410763722 A CN 201410763722A CN 104480903 A CN104480903 A CN 104480903A
- Authority
- CN
- China
- Prior art keywords
- concrete
- parting
- panel
- joints
- slab
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
Abstract
The invention discloses a panel joint structure for a concrete panel rockfill dam and a construction method of the panel joint structure, and belongs to the technical field of hydraulic engineering. The panel joint structure comprises a concrete panel and concrete toe boards, wherein the concrete toe boards are positioned on the lower edge of the concrete panel; the concrete panel is provided with a plurality of joints which are longitudinally distributed along the concrete panel; the joints comprise vertical extrusion joints and vertical tension joints; the vertical extrusion joints are formed in the middle section of the concrete panel; the vertical tension joints are formed in two ends of the concrete panel. The construction method comprises the following steps: determining the length of a compressive zone; determining longitudinal displacement; calculating the widths of the joints; calculating the quantity of the joints; processing the joints. According to the technical scheme, the panel joints on the concrete panel rockfill dam are scientifically and reasonably calculated; due to the allowable sum of elastic deformation widths, the joints between the panels adapt to longitudinal displacement of the dam, so that extrusion between anti-seepage panels of the concrete rockfill dam is avoided, and the effect of effectively avoiding extrusion damage between the panels is achieved.
Description
Technical field
The invention belongs to hydraulic engineering technical field, relate to a kind of concrete surface plated construction of hydraulic engineering dam, especially relate to a kind of Face Slab of Concrete-faced Rockfill and divide crack structure and construction method thereof.
Background technology
Storehouse is built a dam in Modern Water Conservancy engineering, Concrete Face Rockfill Dam is one of the most frequently used dam pattern, this kind of dam type upstream face is concrete slab, it is rockfill after concrete slab, concrete slab is used for antiseepage dash, rockfill is used for bearing water pressure, and therefore, concrete slab is the core texture in this kind of dam type.But, find during rock engineering operation built at home and abroad, there is the concrete slab of many engineerings all because parting between panel is improper, there occurs the situation of extruding mutually between panel, even cause panel breakage, cause larger economic loss, and give engineering bring larger potential safety hazard, which results in the attention of hydraulic engineering circle.Trace it to its cause, mainly between counter plate, the understanding of importance of point crack structure is unclear, counter plate parting is only the consideration based on construction technology aspect, the seam of parting is wide does not do special requirement and specially treated yet, when dam two sides are subjected to displacement (hereinafter referred to as length travel) along the axis of dam, namely can be squeezed between panel power effect, when this shift value acquires a certain degree, when stress in concrete slab exceedes concrete intensity, concrete slab will produce squeeze and destroy.
Summary of the invention
In order to solve the problem, the invention provides a kind of Face Slab of Concrete-faced Rockfill and dividing crack structure and construction method thereof, thus reaching the effect avoiding panel to suffer squeeze and destroy.
The present invention is achieved by following technical solution.
A kind of Face Slab of Concrete-faced Rockfill divides crack structure, comprise concrete slab and concrete toe board, described concrete toe board is positioned at concrete slab lower limb, described concrete slab is provided with some partings along concrete slab genesis analysis, described parting comprises extruding vertical lap seam and tension vertical lap seam, described extruding vertical lap seam is positioned at concrete slab stage casing, and be provided with elastic waterstop material in extruding vertical lap seam, described tension vertical lap seam is positioned at concrete slab two ends.
A kind of Face Slab of Concrete-faced Rockfill parting construction method, comprises the steps:
(1) pressure zone span access location length L is determined.Adopt engineering analog method or triaxiality deformation analysis method to analyze the duty of concrete slab, namely the length of compressive stress region N be panel pressure zone span access location length L;
(2) dam body length travel B is determined.Engineering analog method or triaxiality deformation analysis method is adopted to analyze dam length travel B in the axial direction;
(3) parting width b is calculated.Owing to will establish elastic waterstop material in seam, parting width b is the width b that selected elastic waterstop material is compressed to the limit
0with the width b of allowable transformation after its compression
1sum;
(4) parting number n is calculated.For meeting anti-extrusion condition, the width b of elastic waterstop material allowable transformation
1sum is greater than dam body length travel B, can obtain the minimum value of parting number n thus; Meanwhile, for meeting panel concrete slding form operation condition, panel piecemeal width S=L/n-1, can determine suitable parting number n thus;
(5) parting is processed.In parting, fill elastic waterstop material, and by face dam conventional anti-permeation method, Anti-seeping technology is carried out to parting.
Further, the middle parting width b value of described step (3) is between 5 ~ 60mm.
Further, the interval S value in described step (4) between parting is 10 ~ 18m.
The invention has the beneficial effects as follows:
A kind of Face Slab of Concrete-faced Rockfill of the present invention divides crack structure and construction method thereof, by carrying out scientific and reasonable calculating to the panel parting in Concrete Face Rockfill Dam, parting between panel is adopted to allow elastic deformation width sum to adapt to the length travel of dam, to avoid extruding between concrete loose rock dam face slab for water retaining, reach the effect effectively avoiding squeeze and destroy between panel, improve the security performance of concrete loose rock dam face slab for water retaining, save dam operation and maintenance cost; Simultaneously the technical program has sufficient theoretical foundation, can be realized by simple computation and construction control, has that structure is simple, an advantage of economy and constructability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the cross section structure schematic diagram of I-I in Fig. 1;
Fig. 3 is the structural representation at A place in Fig. 2.
In figure: 1-concrete slab, 2-concrete toe board, 3-extrudes vertical lap seam, 301-elastic waterstop material, 4-tension vertical lap seam.
Detailed description of the invention
Technical scheme of the present invention is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, Figure 2, Figure 3 shows, concrete slab 1 is divided into tensile region M and pressure zone N by its duty, and M position, tensile region is distributed in concrete slab about 1 two ends, and N position, pressure zone is distributed in concrete slab 1 central region.
A kind of Face Slab of Concrete-faced Rockfill of the present invention divides crack structure, comprise concrete slab 1 and concrete toe board 2, described concrete toe board 2 is positioned at concrete slab 1 lower limb and both sides of the edge, described concrete slab 1 is provided with some partings along concrete slab 1 genesis analysis, described parting comprises extruding vertical lap seam 3 and tension vertical lap seam 4, described extruding vertical lap seam 3 is positioned at concrete slab 1 stage casing, be provided with elastic waterstop material 301 in extruding vertical lap seam 3, described tension vertical lap seam 4 is positioned at concrete slab 1 two ends.
A kind of Face Slab of Concrete-faced Rockfill parting construction method in the technical program, that reserved corresponding seam is wide when concrete slab 1 pressure zone N arranges parting, seamed wide sum is made to be greater than dam length travel, to avoid extruding between panel seam, thus prevent the generation of squeeze and destroy between panel.
Embodiment
A kind of Face Slab of Concrete-faced Rockfill parting construction method, comprises and determines pressure zone span access location length, determines length travel, calculates parting width, calculate parting number and carry out treatment step to parting, specific as follows:
(1) pressure zone span access location length L is determined.Adopt engineering analog method or triaxiality deformation analysis method to analyze the duty of concrete slab, the length of compressive stress region N is pressure zone span access location length L;
(2) dam body length travel B is determined.Engineering analog method or triaxiality deformation analysis method is adopted to analyze dam length travel B in the axial direction.
(3) parting width b is calculated.For ease of construction, stitch wide can not be too little, can not be too large, most crack width is taken as 5mm, the wide 60mm of maximum seam, carries out Anti-seeping technology to establish in seam on elastomeric material and opposite joint.Namely parting width b span is 5 ~ 60mm.The concrete definition stitching wide b is:
B=b
0+ b
1(formula 1)
In formula:
B---parting width (mm);
B
0---elastomeric material is compressed to the width (mm) of the limit;
B
1---the width (mm) of allowable transformation after elastomeric material compression.
(4) parting number n is calculated.For meeting anti-extrusion condition, parting width should meet the requirement of following formula, that is:
N (b-b
0) ﹥ B or n × b
1﹥ B (formula 2)
In formula:
N---extrusion slot parting number;
B---dam body length travel (mm).
Simultaneously for meeting panel concrete slding form operation condition, panel piecemeal width S is taken as 10 ~ 18m, and panel piecemeal width S should meet the requirement of following formula, that is:
S=L/n-1 (formula 3)
In formula:
S---concrete slab crush zone piecemeal width (m);
L---panel pressure zone length (m).
Utilize above-mentioned (formula 1), (formula 2) and (formula 3) can determine suitable parting number n.
(5) parting is processed.In parting, fill high-compressibility filler, and by face dam conventional anti-permeation method, Anti-seeping technology is carried out to parting.
When dam body length travel direction is contrary, above-mentioned steps is utilized to repeat rightabout design and construct.
Embodiments of the present invention are not limited to above-described embodiment, and the various changes made under the prerequisite not departing from present inventive concept all belong within protection scope of the present invention.
Claims (4)
1. a Face Slab of Concrete-faced Rockfill divides crack structure, comprise concrete slab (1) and concrete toe board (2), described concrete toe board (2) is positioned at concrete slab (1) lower limb and both sides of the edge, described concrete slab (1) is provided with some partings along concrete slab (1) genesis analysis, it is characterized in that: described parting comprises extruding vertical lap seam (3) and tension vertical lap seam (4), described extruding vertical lap seam (3) is positioned at concrete slab (1) stage casing, elastic waterstop material (301) is provided with in extruding vertical lap seam (3), described tension vertical lap seam (4) is positioned at concrete slab (1) two ends.
2. a Face Slab of Concrete-faced Rockfill parting construction method, is characterized in that, comprises the steps:
(1) pressure zone span access location length L is determined.Adopt engineering analog method or triaxiality deformation analysis method to analyze the duty of concrete slab, namely the length of compressive stress region N be panel pressure zone span access location length L;
(2) dam body length travel B is determined.Engineering analog method or triaxiality deformation analysis method is adopted to analyze dam length travel B in the axial direction;
(3) parting width b is calculated.Owing to will establish elastic waterstop material in seam, parting width b is the width b that selected elastic waterstop material is compressed to the limit
0with the width b of allowable transformation after its compression
1sum;
(4) parting number n is calculated.For meeting anti-extrusion condition, the width b of elastic waterstop material allowable transformation
1sum is greater than dam body length travel B, can obtain the minimum value of parting number n thus; Meanwhile, for meeting panel concrete slding form operation condition, panel piecemeal width S=L/n-1, can determine suitable parting number n thus;
(5) parting is processed.In parting, fill elastic waterstop material, and by face dam conventional anti-permeation method, Anti-seeping technology is carried out to parting.
3. a kind of Face Slab of Concrete-faced Rockfill parting construction method according to claim 2, is characterized in that: in described step (3), parting width b value is between 5 ~ 60mm.
4. a kind of Face Slab of Concrete-faced Rockfill parting construction method according to claim 2, is characterized in that: the interval S value in described step (4) between parting is 10 ~ 18m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763722.2A CN104480903B (en) | 2014-12-12 | 2014-12-12 | A kind of Face Slab of Concrete-faced Rockfill parting structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763722.2A CN104480903B (en) | 2014-12-12 | 2014-12-12 | A kind of Face Slab of Concrete-faced Rockfill parting structure and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104480903A true CN104480903A (en) | 2015-04-01 |
| CN104480903B CN104480903B (en) | 2016-07-06 |
Family
ID=52755501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410763722.2A Active CN104480903B (en) | 2014-12-12 | 2014-12-12 | A kind of Face Slab of Concrete-faced Rockfill parting structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104480903B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912035A (en) * | 2015-06-12 | 2015-09-16 | 中国电建集团贵阳勘测设计研究院有限公司 | Elastic connection structure of concrete panel vertical joints and construction method thereof |
| CN105297685A (en) * | 2015-11-23 | 2016-02-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Base concrete face rock fill dam and construction method thereof |
| CN107022980A (en) * | 2017-03-30 | 2017-08-08 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of method of face dam dam body and panel deformation control with adapting to |
| CN107180011A (en) * | 2016-03-10 | 2017-09-19 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of non-wide pressure property vertical lap seam slit width evaluation method of CFRD |
| CN110004886A (en) * | 2019-05-15 | 2019-07-12 | 中国电建集团中南勘测设计研究院有限公司 | Asphaltic concrete core wall basement construction method and its structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617431A (en) * | 1992-06-30 | 1994-01-25 | Sumitomo Rubber Ind Ltd | Joint sealant for civil engnieering concrete placing |
| CN101603299A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of broken line type dam joint structure and job practices thereof |
| CN101906768A (en) * | 2010-08-19 | 2010-12-08 | 中国水电建设集团十五工程局有限公司 | Panel construction method of concrete faced rock-fill dam |
| CN203307776U (en) * | 2013-06-06 | 2013-11-27 | 中国水电顾问集团华东勘测设计研究院 | Concrete face rock fill dam toe board structure |
-
2014
- 2014-12-12 CN CN201410763722.2A patent/CN104480903B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617431A (en) * | 1992-06-30 | 1994-01-25 | Sumitomo Rubber Ind Ltd | Joint sealant for civil engnieering concrete placing |
| CN101603299A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of broken line type dam joint structure and job practices thereof |
| CN101906768A (en) * | 2010-08-19 | 2010-12-08 | 中国水电建设集团十五工程局有限公司 | Panel construction method of concrete faced rock-fill dam |
| CN203307776U (en) * | 2013-06-06 | 2013-11-27 | 中国水电顾问集团华东勘测设计研究院 | Concrete face rock fill dam toe board structure |
Non-Patent Citations (2)
| Title |
|---|
| 杨泽艳等: "峡谷地区200m级高面板堆石坝筑坝技术研究及应用", 《水利水电科技进展》 * |
| 湛正刚等: "董箐水电站面板堆石坝设计", 《贵州水力发电》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912035A (en) * | 2015-06-12 | 2015-09-16 | 中国电建集团贵阳勘测设计研究院有限公司 | Elastic connection structure of concrete panel vertical joints and construction method thereof |
| CN105297685A (en) * | 2015-11-23 | 2016-02-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Base concrete face rock fill dam and construction method thereof |
| CN107180011A (en) * | 2016-03-10 | 2017-09-19 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of non-wide pressure property vertical lap seam slit width evaluation method of CFRD |
| CN107022980A (en) * | 2017-03-30 | 2017-08-08 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of method of face dam dam body and panel deformation control with adapting to |
| CN107022980B (en) * | 2017-03-30 | 2019-03-05 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of dam body of face dam and the Deformation control and adaptive method of panel |
| CN110004886A (en) * | 2019-05-15 | 2019-07-12 | 中国电建集团中南勘测设计研究院有限公司 | Asphaltic concrete core wall basement construction method and its structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104480903B (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104480903B (en) | A kind of Face Slab of Concrete-faced Rockfill parting structure and construction method thereof | |
| CN103225285B (en) | A kind of steel membrane rock | |
| CN204023501U (en) | A kind of reinforcement Anti-seeping technology structure for earth and rockfill dam | |
| CN103215946A (en) | Electroosmosis electrode and electroosmosis draining system thereof | |
| CN106192984B (en) | The reinforcing soft soil roadbed system of ring tube-in-tube pile joint electric osmose and construction method | |
| CN105297686A (en) | Grid type concrete faced rockfill dam | |
| CN203716168U (en) | Toe slab foundation structure of deep covering layer of concrete face rockfill dam | |
| CN204571337U (en) | A kind of fixed structure repairing floor empty drum cracking | |
| CN202509464U (en) | Panel rockfill dam capable of improving panel stress deformation | |
| CN204024065U (en) | A kind of mass concrete construction seam joint form | |
| CN205382637U (en) | Hot rolling ribbed steel bar | |
| CN207988211U (en) | A kind of wall with damping capacity | |
| CN205206055U (en) | Basement outer wall post -cast strip thickening anti -seepage waterstop structure | |
| CN205577166U (en) | Energy -saving ceramsite concrete building block | |
| CN204311408U (en) | The low temperature resistant corresponding shape rubber fastening band of high-elastic tension | |
| CN203213319U (en) | Water stopping steel plate fixing device in building construction | |
| CN204553357U (en) | A kind of Under Water Pumps that is used for carries the anti-stone net arrangement of lime mortar | |
| CN204312100U (en) | The mounted rubber fastening band of multi-function back | |
| CN204401564U (en) | A kind of gate dam transverse joint sealing and joint filling structure | |
| CN107022980B (en) | A kind of dam body of face dam and the Deformation control and adaptive method of panel | |
| CN204703130U (en) | A kind of elastic connection structure of concrete slab vertical lap seam | |
| CN203625943U (en) | Water stopping device | |
| CN205875097U (en) | Anti extrusion concrete floor slab structure | |
| CN204875693U (en) | High dam antipriming | |
| CN205763159U (en) | A kind of reinforcing bar indentation arrangements |
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 |