CN103924557A - Panel dam concrete squeezing side wall cut-through method - Google Patents
Panel dam concrete squeezing side wall cut-through method Download PDFInfo
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- CN103924557A CN103924557A CN201410152204.7A CN201410152204A CN103924557A CN 103924557 A CN103924557 A CN 103924557A CN 201410152204 A CN201410152204 A CN 201410152204A CN 103924557 A CN103924557 A CN 103924557A
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- side wall
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Abstract
The invention discloses a panel dam concrete squeezing side wall cut-through method. The method includes the steps that firstly, a first trapezoid groove is formed in a designed squeezing side wall slope along a dam panel vertical joint parting position, wherein the groove bottom width of the first trapezoid groove is larger than the width of a W-shaped water stoppage copper piece at the bottom of a designed dam panel vertical parted joint; secondly, a second trapezoid groove is formed in the groove bottom of the first trapezoid groove, wherein the width of the groove opening of the second trapezoid groove is smaller than that of the groove bottom of the first trapezoid groove, and the groove depth of the second trapezoid groove is larger than the thickness of a squeezing side wall so that the squeezing side wall can be completely cut through; thirdly, after the squeezing side wall is cut through, a trapezoid groove below a mortar cushion block can be backfilled with cushion layer materials. The method has the advantages that the stress distribution and working state of a dam panel after construction are effectively improved, and the crushing stress peak value is decreased. Because the trapezoid groove below the mortar cushion block can be backfilled with the cushion layer materials, the squeezing side wall and the cushion layer materials are less restrained by each other, and the influence of the squeezing side wall on dam body and panel stress deformation is greatly reduced.
Description
Technical field
The present invention relates to face dam concrete extrusion side wall, especially relate to the disconnected method of panel dam concrete extrusion side wall cutter.
Background technology
At present, the lower metope that high face dam concrete extrusion side wall contacts with dam body bedding material mostly is along the staircase structural model of the domatic setting of dam body.After concrete extrusion side wall has been constructed, before panel construction, excessive at retaining phase panel deformation for preventing face dam dam body, cause panel crack, as one of major measure, need to cut a hole disconnected processing to concrete extrusion side wall, make extrusion side wall top and dam body panel, bottom disconnected with being connected from cutting a hole disconnected front hinged becoming completely of bedding material, even like this when extrusion side wall is out of shape with dam deformation, also can fully adapt to sedimentation and the distortion in bedding material district, reach the object that extrusion side wall bottom is difficult for forming cavity, avoid dam body panel to cause adverse effect, also make the dam body panel on extrusion side wall top synchronize sedimentation with it, distortion.Also different because of different its stress deformations of build and the effect of cutter breaking joint, therefore cut a hole breaking joint three-dimensional-structure and select just to seem extremely important.
Summary of the invention
The object of the invention is to provide a kind of face dam concrete extrusion side wall cutter disconnected method.
For achieving the above object, the present invention takes following technical proposals:
The disconnected method of face dam concrete extrusion side wall cutter of the present invention, carries out according to following step;
The first step, before dam body panel construction, along the extrusion side wall at dam body panel vertical lap seam parting place of design is domatic, offer the first dovetail groove that cross section is trapezium structure, the bottom land width of described the first dovetail groove is greater than the width of the vertical parting of the dam body panel bottom W shape copper seal of design, to guarantee laying of described W shape copper seal;
Second step, along the bottom land of described the first dovetail groove, offer the second dovetail groove that cross section is trapezium structure, the width of rebate of described the second dovetail groove is less than the bottom land width of the first dovetail groove, and the thickness that the groove depth of the second dovetail groove is equal to or greater than extrusion side wall disconnects extrusion side wall completely;
The 3rd step, extrusion side wall cutter is had no progeny, and before the mortar pad below construction is positioned at described W shape copper seal, adopts the dovetail groove of below, mortar pad region described in bedding material backfill, and the bedding material compacting criteria of backfill is with the compacting criteria in dam body bed course district.
The invention has the advantages that along the extrusion side wall at dam body panel vertical lap seam parting place of design and offer the first dovetail groove, and along the bottom land of the first dovetail groove, offer the second dovetail groove extrusion side wall is disconnected completely.Therefore, the disconnected construction of cutter of extrusion side wall and the layout of W shape copper seal have not only been facilitated, the cutter breaking joint of extrusion side wall is adopted to two trapezoidal broken line crack structures simultaneously, effectively improved stress distribution and the work condition of the dam body panel after construction, reduced tension and compression peak stress.Extrusion side wall cutter is had no progeny, before mortar pad below construction is positioned at W shape copper seal, described in the backfill of employing bedding material, the dovetail groove of below, mortar pad region, has reduced the constraint of extrusion side wall and bedding material, has greatly reduced extrusion side wall to dam body and stress and deformations of concrete face slab impact.
Accompanying drawing explanation
Fig. 1 is the face dam slope structure schematic diagram before dam body panel construction of the present invention.
Fig. 2 is the structural representation that the A of Fig. 1 has no progeny to (the domatic normal direction of face dam) extrusion side wall cutter.
Fig. 3 is that the B-B of Fig. 1 is to sectional drawing.
Fig. 4 is that the C-C of Fig. 1 is to sectional drawing.
The specific embodiment
As Figure 1-4, the disconnected method of face dam concrete extrusion side wall cutter of the present invention, carries out according to following step;
The first step, before dam body panel construction, the domatic normal direction of extrusion side wall 2 along dam body panel vertical lap seam parting center line 1 place of layout design is offered the first dovetail groove 3 that cross section is isosceles trapezoidal structure, width of rebate 80cm, the groove depth 10cm of described the first dovetail groove 3, bottom land width are greater than the width that is arranged on the vertical parting of dam body panel bottom W shape copper seal of design, to guarantee laying of described W shape copper seal;
Second step, along the bottom land of described the first dovetail groove 3, offer the second dovetail groove 4 that cross section is isosceles trapezoidal structure, the width of rebate 10cm of described the second dovetail groove 4, the thickness that the groove depth of the second dovetail groove 4 is greater than extrusion side wall 2 disconnects extrusion side wall 2 completely;
The 3rd step, extrusion side wall 2 cutters are had no progeny, before mortar pad below construction is positioned at described W shape copper seal, the second dovetail groove 4 of below, mortar pad region described in 5 backfills of employing bedding material, bedding material 5 compacting criterias of backfill are with the compacting criteria in dam body bed course district 6.
Claims (1)
1. the disconnected method of face dam concrete extrusion side wall cutter, is characterized in that: according to following step, carry out;
The first step, before dam body panel construction, along the extrusion side wall at dam body panel vertical lap seam parting place of design is domatic, offer the first dovetail groove that cross section is trapezium structure, the bottom land width of described the first dovetail groove is greater than the width of the vertical parting of the dam body panel bottom W shape copper seal of design, to guarantee laying of described W shape copper seal;
Second step, along the bottom land of described the first dovetail groove, offer the second dovetail groove that cross section is trapezium structure, the width of rebate of described the second dovetail groove is less than the bottom land width of the first dovetail groove, and the thickness that the groove depth of the second dovetail groove is equal to or greater than extrusion side wall disconnects extrusion side wall completely;
The 3rd step, extrusion side wall cutter is had no progeny, and before the mortar pad below construction is positioned at described W shape copper seal, adopts the dovetail groove of below, mortar pad region described in bedding material backfill, and the bedding material compacting criteria of backfill is with the compacting criteria in dam body bed course district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152204.7A CN103924557A (en) | 2014-04-16 | 2014-04-16 | Panel dam concrete squeezing side wall cut-through method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152204.7A CN103924557A (en) | 2014-04-16 | 2014-04-16 | Panel dam concrete squeezing side wall cut-through method |
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| Publication Number | Publication Date |
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| CN103924557A true CN103924557A (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410152204.7A Pending CN103924557A (en) | 2014-04-16 | 2014-04-16 | Panel dam concrete squeezing side wall cut-through method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192898A (en) * | 2016-07-11 | 2016-12-07 | 中国水利水电第十工程局有限公司 | The joint construction method of Face Slab of Concrete-faced Rockfill anti-settling deformation |
| CN110193872A (en) * | 2019-05-28 | 2019-09-03 | 西安理工大学 | A kind of composable mold for studying extrusion side wall Cracking Mechanism |
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| CN101100848A (en) * | 2007-07-30 | 2008-01-09 | 中国葛洲坝水利水电工程集团有限公司 | Construction method for panel rock-fill dams extrusion side wall staking |
| CN101701448A (en) * | 2009-11-19 | 2010-05-05 | 潘志洪 | Bridge expansion joint structure |
| CN201506946U (en) * | 2009-05-21 | 2010-06-16 | 赵树青 | Expansion joint on cement concrete pavement |
| CN101831889A (en) * | 2010-05-05 | 2010-09-15 | 河海大学 | Anti-seismic combination slab for earth and rockfill dam and construction method thereof |
| CN201635195U (en) * | 2009-09-30 | 2010-11-17 | 黄庆钟 | Structure of water-blocking path for expansion joint |
| CN202658519U (en) * | 2012-07-10 | 2013-01-09 | 重庆亲禾预制品有限公司 | Bridge expansion joint structure |
| CN103288385A (en) * | 2013-06-04 | 2013-09-11 | 重庆佳厚建筑材料有限公司 | Expansion joint material for bridge and expansion joint structure |
| WO2014166996A1 (en) * | 2013-04-09 | 2014-10-16 | Carpi Tech B.V. | Method and device for covering and waterproofing joints in hydraulic works |
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2014
- 2014-04-16 CN CN201410152204.7A patent/CN103924557A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100848A (en) * | 2007-07-30 | 2008-01-09 | 中国葛洲坝水利水电工程集团有限公司 | Construction method for panel rock-fill dams extrusion side wall staking |
| CN201506946U (en) * | 2009-05-21 | 2010-06-16 | 赵树青 | Expansion joint on cement concrete pavement |
| CN201635195U (en) * | 2009-09-30 | 2010-11-17 | 黄庆钟 | Structure of water-blocking path for expansion joint |
| CN101701448A (en) * | 2009-11-19 | 2010-05-05 | 潘志洪 | Bridge expansion joint structure |
| CN101831889A (en) * | 2010-05-05 | 2010-09-15 | 河海大学 | Anti-seismic combination slab for earth and rockfill dam and construction method thereof |
| CN202658519U (en) * | 2012-07-10 | 2013-01-09 | 重庆亲禾预制品有限公司 | Bridge expansion joint structure |
| WO2014166996A1 (en) * | 2013-04-09 | 2014-10-16 | Carpi Tech B.V. | Method and device for covering and waterproofing joints in hydraulic works |
| CN103288385A (en) * | 2013-06-04 | 2013-09-11 | 重庆佳厚建筑材料有限公司 | Expansion joint material for bridge and expansion joint structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192898A (en) * | 2016-07-11 | 2016-12-07 | 中国水利水电第十工程局有限公司 | The joint construction method of Face Slab of Concrete-faced Rockfill anti-settling deformation |
| CN110193872A (en) * | 2019-05-28 | 2019-09-03 | 西安理工大学 | A kind of composable mold for studying extrusion side wall Cracking Mechanism |
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Application publication date: 20140716 |