CN105317021A - Connection method and structure for variable-section continuous rigid frame aqueducts - Google Patents
Connection method and structure for variable-section continuous rigid frame aqueducts Download PDFInfo
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- CN105317021A CN105317021A CN201510339771.8A CN201510339771A CN105317021A CN 105317021 A CN105317021 A CN 105317021A CN 201510339771 A CN201510339771 A CN 201510339771A CN 105317021 A CN105317021 A CN 105317021A
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Abstract
The invention discloses a connection method and structure for variable-section continuous rigid frame aqueducts. The connection method comprises the steps that a transition aqueduct is arranged between the single-hole aqueduct and the two-hole aqueduct, the single-hole aqueduct and the two-hole aqueduct with different sections are connected together smoothly through the transition aqueduct, and sudden connection change generated in the connection position of the single-hole aqueduct and the two-hole aqueduct is avoided; and meanwhile, a base plate of the transition aqueduct is provided with a water-stop device through which water is prevented from gradually seeping into the connection position, and the base plate of the transition aqueduct is prevented from being corroded. According to the connection method and structure, the problem that the connection stress of an existing connection structure is reduced due to sudden connection change generated in the connection position of the single-hole aqueduct and the two-hole aqueduct is solved through the method that the transition aqueduct is added to the connection position of the single-hole aqueduct and the two-hole aqueduct. Meanwhile, the water is prevented from gradually seeping into the connection position through the water-stop device, so that the deficiency that the water seeps into the connection position, the base plate of the transition aqueduct is corroded, and consequently corrosion damage is generated to structural concrete and reinforcing steel bars, cracking of construction joints is generated finally, and accordingly the durability of the aqueducts is severely influenced, and even the safety of a structure is affected are overcome.
Description
Technical field
the present invention relates to a kind of method of attachment and structure of variable cross-section continuous rigid frame aqueduct, belong to aqueduct technical field in hydraulic engineering.
Technical background
along with developing rapidly of China's hydraulic engineering, the application of Long span defeated draining continuous rigid frame aqueduct is more and more extensive.The bottom surface of Long span defeated draining continuous rigid frame aqueduct is generally arch, and therefore vault part adopts single cell box girder to form usually, usually adopts two chamber beam to form, therefore will inevitably occur the connectivity problem of single cell box girder and two chamber beam near arch abutment.
the single cell box girder of existing continuous rigid frame aqueduct is the direct connected mode adopted with two chamber beam, because single cell box girder is different from two chamber beam section shape, the constuction joint of an abrupt change of cross section will inevitably be there is at tie point, the abrupt change of cross section due to constuction joint place can cause stress to concentrate, there is construction quality hidden danger, because continuous rigid frame aqueduct stroke is larger, the erosion damage of structural concrete and reinforcing bar can be caused gradually with the water body in time slot body, finally cause the cracking of constuction joint, have a strong impact on the durability of aqueduct, even affect the safety of structure.Single cell box girder in existing most continuous rigid frame aqueduct and two direct connected mode of chamber beam, cannot guarantee application life and the structural safety of continuous rigid frame aqueduct.
Summary of the invention
goal of the invention of the present invention is: the method for attachment and the structure that provide a kind of variable cross-section continuous rigid frame aqueduct, concentrate with the stress reducing two kinds of dissimilar aqueduct junctions, improve the waterproof ability of junction, extend the application life of aqueduct, improve the security reliability of aqueduct, thus overcome the deficiencies in the prior art.
technical scheme of the present invention is achieved in that
the method of attachment of a kind of variable cross-section continuous rigid frame aqueduct of the present invention is, the method arranges lead-over groove between single hole aqueduct and diplopore aqueduct, by lead-over groove by the single hole aqueduct of two different cross sections and level and smooth the linking together of diplopore aqueduct, avoid producing to be connected with the junction of diplopore aqueduct at single hole aqueduct suddenling change; Antipriming is set on lead-over groove base plate simultaneously, prevents junction water from infiltrating gradually by antipriming and corrode the base plate of lead-over groove.
in preceding method, the shape of described single hole aqueduct is rectangle, and single hole aqueduct base plate is inclined plane, and inclined plane is provided with anchoring tooth plate, and anchoring tooth plate is provided with pave-load layer, by anchoring tooth plate anchor foundation plate longitudinal prestressing steel bundle.
in preceding method, the cross sectional shape of described diplopore aqueduct is day font, and diplopore aqueduct is separated into bottom outlet and water hole two part by dividing plate by centre; Described lead-over groove base plate is inclined plane, and lead-over groove is connected an end section with single hole aqueduct be rectangle; Lead-over groove and the end section that diplopore aqueduct connects are the day font corresponding with diplopore aqueduct cross sectional shape, be provided with in the middle of lead-over groove corresponding with diplopore aqueduct internal partition in plate; Middle plate extends to the position that diplopore aqueduct length direction is less than half, sealing is provided with between middle plate end and the base plate of lead-over groove, by sealing closed lead-over groove bottom outlet, lead-over groove is connected one end with single hole aqueduct and is provided with bed course, makes smoothly transition bottom the cross-section of river by sealing and bed course; Antipriming is provided with between bed course and sealing.
in preceding method, described sealing and bed course seam crossing top are provided with groove, closed-cell foam plate is plugged with in sealing and bed course seam, U-shaped GB composite rubber water stop is provided with in the seam at closed-cell foam plate top, waterstop both sides are bolted on groove floor, be lined with GB offset plate between waterstop and groove floor, the electrolysis of bolt and waterstop is provided with pressing plate; Waterstop top is provided with polyethylene filleting plate, and its complementary space acrylamide sand grout of groove is filled, the two component polysulfide sealant shutoff in polyethylene filleting plate top.
in preceding method, described U-shaped GB composite rubber water stop two ends are provided with stainless steel sealing termination, stainless steel sealing termination adopts modified epoxide resin adhesive to be closely pasted on groove notch and lead-over groove web handover region, U-shaped GB composite rubber water stop two ends are pasted on stainless steel sealing termination, and remainder is then pasted on groove notch bottom surface.
syndeton according to of the present invention a kind of variable cross-section continuous rigid frame aqueduct of said method formation is that this structure comprises single hole aqueduct and diplopore aqueduct, between single hole aqueduct and diplopore aqueduct, be provided with lead-over groove; Antipriming is provided with bottom lead-over groove.
in aforementioned structure, the cross sectional shape of described single hole aqueduct is rectangle, and single hole aqueduct base plate is inclined plane, and inclined plane is provided with anchoring tooth plate, and anchoring tooth plate is provided with pave-load layer.
in aforementioned structure, be provided with dividing plate in the middle of described diplopore aqueduct, cross sectional shape is day font, and diplopore aqueduct base plate is inclined plane; Described lead-over groove is corresponding with the end section that single hole aqueduct connects and single hole aqueduct cross section, and lead-over groove is corresponding with the end section that diplopore aqueduct connects and diplopore aqueduct cross section, be provided with in the middle of diplopore aqueduct corresponding with diplopore aqueduct internal partition in plate; Middle plate end is positioned at close to lead-over groove medium position, and middle plate end is connected with lead-over groove base plate through sealing, and one end that diplopore aqueduct is connected with single hole aqueduct is provided with bed course, is provided with antipriming between bed course and sealing.
in aforementioned structure, described sealing and bed course seam crossing top are provided with groove, closed-cell foam plate is plugged with in sealing and bed course seam, U-shaped GB composite rubber water stop is provided with in the seam at closed-cell foam plate top, waterstop both sides are bolted on groove floor, be lined with GB offset plate between waterstop and groove floor, the electrolysis of bolt and waterstop is provided with pressing plate; Waterstop top is provided with polyethylene filleting plate, and its complementary space acrylamide sand grout of groove is filled, the two component polysulfide sealant shutoff in polyethylene filleting plate top.
in aforementioned structure, described U-shaped GB composite rubber water stop two ends are provided with stainless steel sealing termination, stainless steel sealing termination is pasted on groove notch and lead-over groove web handover region, U-shaped GB composite rubber water stop two ends are pasted on stainless steel sealing termination, and remainder is then pasted on groove notch bottom surface.
owing to have employed technique scheme, the present invention compared with prior art, the present invention, by increasing the method for lead-over groove in the junction of single hole aqueduct and diplopore aqueduct, solves the structural mutation that existing syndeton produces because of single hole aqueduct and diplopore aqueduct junction, slow down connection stress.Prevent junction water from infiltrating gradually by antipriming simultaneously and corrode the base plate of lead-over groove, thus cause the erosion damage of structural concrete and reinforcing bar, finally cause the cracking of constuction joint, had a strong impact on the durability of aqueduct, even affected the deficiency of the safety of structure.Present invention reduces the stress concentration phenomenon of structure, waterproof ability is strong, good endurance.
figure of description
fig. 1 is structural representation of the present invention;
fig. 2 is the partial enlarged drawing of antipriming in Fig. 1;
fig. 3 is the connection diagram of waterstop two ends and transition cell wall;
fig. 4 is A-A sectional view in Fig. 2;
fig. 5 is the sectional schematic diagram of single hole aqueduct;
fig. 6 is the sectional schematic diagram of diplopore aqueduct.
being labeled as in accompanying drawing: 1-single hole aqueduct; 2-lead-over groove; 3-diplopore aqueduct; 4-anchoring tooth plate; 5-pave-load layer; 6-dividing plate; 7-bottom outlet; 8-water hole; Plate in 9-; 10-seals; 11-bed course; 12-antipriming; 13-water; 14-closed-cell foam plate; 15-U shape GB composite rubber water stop; 16-bolt; 17-GB offset plate; 18-pressing plate; 19-polyethylene filleting plate; 20-acrylamide sand grout; The two component polysulfide sealant of 21-; 22-groove; 23-acrylamide sand grout circular arc chamfering, 24-waterproofing course; 25-aerated concrete layer; 26-stainless steel sealing termination.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail.
the method of attachment of a kind of variable cross-section continuous rigid frame aqueduct of the present invention, as shown in Figure 1, the method arranges lead-over groove 2 between single hole aqueduct 1 and diplopore aqueduct 3, by lead-over groove by the single hole aqueduct of two different cross sections and level and smooth the linking together of diplopore aqueduct, avoid producing to be connected with the junction of diplopore aqueduct at single hole aqueduct suddenling change; Antipriming 12 is set on lead-over groove base plate simultaneously, prevents junction water 13 from infiltrating gradually by antipriming and corrode the base plate of lead-over groove 2.The cross sectional shape of single hole aqueduct 1 is rectangle (see figure 5), and single hole aqueduct base plate is inclined plane, and inclined plane is provided with anchoring tooth plate 4, and anchoring tooth plate is provided with pave-load layer 5, by anchoring tooth plate anchor foundation plate longitudinal prestressing steel bundle.The cross sectional shape of diplopore aqueduct 3 is day font (see figure 6), and diplopore aqueduct is separated into bottom outlet 7 and water hole 8 liang of parts by dividing plate 6 by centre; Described lead-over groove base plate is inclined plane, and lead-over groove 2 is connected an end section with single hole aqueduct 1 be rectangle; Lead-over groove and the end section that diplopore aqueduct connects are the day font corresponding with diplopore aqueduct cross sectional shape, be provided with in the middle of lead-over groove corresponding with diplopore aqueduct internal partition in plate 9; Middle plate extends to the position that diplopore aqueduct length direction is less than half, sealing 10 is provided with between middle plate end and the base plate of lead-over groove, by sealing closed lead-over groove bottom outlet, lead-over groove is connected one end with single hole aqueduct and is provided with bed course 11, makes smoothly transition bottom the cross-section of river by sealing and bed course; Antipriming 12 is provided with between bed course and sealing.As shown in Figure 2, sealing 10 and bed course 11 seam crossing top are provided with groove 22, closed-cell foam plate 14 is plugged with in sealing and bed course seam, U-shaped GB composite rubber water stop 15 is provided with in the seam at closed-cell foam plate top, waterstop both sides are fixed on groove floor by bolt 16, be lined with GB offset plate 17 between waterstop and groove floor, the electrolysis of bolt and waterstop is provided with pressing plate 18; Waterstop top is provided with polyethylene filleting plate 19, and its complementary space acrylamide sand grout 20 of groove is filled, two component polysulfide sealant 21 shutoff in polyethylene filleting plate top.As shown in Figure 3, U-shaped GB composite rubber water stop 15 two ends are provided with stainless steel sealing termination 26, stainless steel sealing termination adopts modified epoxide resin adhesive to be closely pasted on groove notch and lead-over groove web handover region, U-shaped GB composite rubber water stop 15 two ends are pasted on stainless steel sealing termination 26, and remainder is then pasted on groove 22 notch bottom surface.
according to the syndeton of of the present invention a kind of variable cross-section continuous rigid frame aqueduct that said method is formed, as shown in Figure 1, this structure comprises single hole aqueduct 1 and diplopore aqueduct 3, is provided with lead-over groove 2 between single hole aqueduct 1 and diplopore aqueduct 3; Antipriming 12 is provided with bottom lead-over groove 2.As shown in Figure 5, the cross sectional shape of single hole aqueduct 1 is rectangle, and single hole aqueduct base plate is inclined plane, and inclined plane is provided with anchoring tooth plate 4, and anchoring tooth plate is provided with pave-load layer 5.As shown in Figure 6, be provided with dividing plate 6 in the middle of diplopore aqueduct 3, cross sectional shape is day font, and diplopore aqueduct base plate is inclined plane; Described lead-over groove 2 is corresponding with the end section that single hole aqueduct 1 connects and single hole aqueduct cross section, and lead-over groove is corresponding with the end section that diplopore aqueduct connects and diplopore aqueduct cross section, be provided with in the middle of diplopore aqueduct 3 corresponding with diplopore aqueduct internal partition 6 in plate 9; Middle plate end is positioned at close to lead-over groove medium position, and middle plate end is connected with lead-over groove base plate through sealing 10, and one end that diplopore aqueduct is connected with single hole aqueduct is provided with bed course 11, is provided with antipriming 12 between bed course and sealing.As shown in Figure 2, sealing 10 and bed course 11 seam crossing top are provided with groove 22, closed-cell foam plate 14 is plugged with in sealing and bed course seam, U-shaped GB composite rubber water stop 15 is provided with in the seam at closed-cell foam plate top, waterstop both sides are fixed on groove floor by bolt 16, be lined with GB offset plate 17 between waterstop and groove floor, the electrolysis of bolt and waterstop is provided with pressing plate 18; Waterstop top is provided with polyethylene filleting plate 19, and its complementary space acrylamide sand grout 20 of groove is filled, two component polysulfide sealant 21 shutoff in polyethylene filleting plate top.As shown in Figure 3, U-shaped GB composite rubber water stop 15 two ends are provided with stainless steel sealing termination 26, stainless steel sealing termination is pasted on groove notch and lead-over groove web handover region, U-shaped GB composite rubber water stop 15 two ends are pasted on stainless steel sealing termination 26, and remainder is then pasted on groove 22 notch bottom surface.
to the present invention, supplementary notes are as follows further more below:
the section of single hole aqueduct as shown in Figure 5, the base plate of single hole aqueduct is provided with anchoring tooth plate 4, anchoring tooth plate is provided with pave-load layer 5, anchoring tooth plate and pave-load layer are provided with aerated concrete layer 25, aerated concrete layer 25 is provided with waterproofing course 24, single hole aqueduct circular arc chamfering adopt be after water light weight concrete construction or concrete, it is waterproofing course 24.The section of diplopore aqueduct as shown in Figure 6.Diplopore aqueduct dividing plate adopts concrete monobloc cast, and dividing plate is provided with waterproofing course 24.
sealing in lead-over groove section base plate, lead-over groove section in plate, lead-over groove section, between base plate all adopts concrete; Bed course on lead-over groove section base plate can select concrete, cementitious capillary waterproofing material, spray polyurea waterproofing coating, polyurethane water-proof paint, polymer cement waterproof paint, also the combination of optional above-mentioned material; Sealing termination adopts the thick stainless strip of 2 ~ 5mm to make, modified epoxide resin adhesive is adopted closely to be pasted on groove notch and lead-over groove web handover region, U-shaped GB composite rubber water stop utilizes bolt to carry out secondary and fixes, and bolt adopts stainless steel bolt, pitch of bolts 200 ~ 400mm.
Embodiment
implementation step of the present invention is as follows:
first complete the construction of the whole single hole aqueduct of aqueduct and diplopore aqueduct base plate, complete lead-over groove base plate when single hole aqueduct and diplopore aqueduct base plate are about to closure at closure mouth and leave standstill 30 days.The construction of plate in then completing on lead-over groove base plate, sealing and bed course, the space of reserved lead-over groove section water-stopping structure simultaneously; Adopt modified epoxide resin adhesive that stainless steel sealing termination is closely pasted on waterstop and reserve notch and web handover region; During construction, as shown in Figure 3, first stainless steel sealing termination is bonded in notch and lead-over groove web handover region, and then U-shaped GB composite rubber water stop is installed, in order to the structure of clear expression stainless steel sealing end, Fig. 3 does not draw U-shaped GB composite rubber water stop.Closed-cell foam plate partial stowage lead-over groove section water-stopping structure is adopted to reserve notch; GB offset plate tight bond is reserved notch in water-stopping structure; U-shaped GB composite rubber water stop is installed, its underpart tight bond is in GB offset plate, top adopts stainless steel band steel pressing plate to compress, and utilize bolt by the U-shaped GB composite rubber water stop groove floor being pressed in sealing and bed course tightly, finally adopt acrylamide sand grout backfill to close water-stopping structure and reserve notch and acrylamide sand grout circular arc chamfering.
Claims (10)
1. the method for attachment of a variable cross-section continuous rigid frame aqueduct, it is characterized in that: the method arranges lead-over groove between single hole aqueduct and diplopore aqueduct, by lead-over groove by the single hole aqueduct of two different cross sections and level and smooth the linking together of diplopore aqueduct, avoid producing to be connected with the junction of diplopore aqueduct at single hole aqueduct suddenling change; Antipriming is set on lead-over groove base plate simultaneously, prevents junction water from infiltrating gradually by antipriming and corrode the base plate of lead-over groove.
2. the method for attachment of variable cross-section continuous rigid frame aqueduct according to claim 1, it is characterized in that: the shape of described single hole aqueduct is rectangle, single hole aqueduct base plate is inclined plane, inclined plane is provided with anchoring tooth plate, anchoring tooth plate is provided with pave-load layer, by anchoring tooth plate anchor foundation plate longitudinal prestressing steel bundle.
3. the method for attachment of variable cross-section continuous rigid frame aqueduct according to claim 2, is characterized in that: the cross sectional shape of described diplopore aqueduct is day font, middlely by dividing plate, diplopore aqueduct is separated into bottom outlet and water hole two part; Described lead-over groove base plate is inclined plane, and lead-over groove is connected an end section with single hole aqueduct be rectangle; Lead-over groove and the end section that diplopore aqueduct connects are the day font corresponding with diplopore aqueduct cross sectional shape, be provided with in the middle of lead-over groove corresponding with diplopore aqueduct internal partition in plate; Middle plate extends to the position that diplopore aqueduct length direction is less than half, sealing is provided with between middle plate end and the base plate of lead-over groove, by sealing closed lead-over groove bottom outlet, lead-over groove is connected one end with single hole aqueduct and is provided with bed course, makes smoothly transition bottom the cross-section of river by sealing and bed course; Antipriming is provided with between bed course and sealing.
4. the method for attachment of variable cross-section continuous rigid frame aqueduct according to claim 3, it is characterized in that: described sealing and bed course seam crossing top are provided with groove, closed-cell foam plate is plugged with in sealing and bed course seam, U-shaped GB composite rubber water stop is provided with in the seam at closed-cell foam plate top, waterstop both sides are bolted on groove floor, be lined with GB offset plate between waterstop and groove floor, the electrolysis of bolt and waterstop is provided with pressing plate; Waterstop top is provided with polyethylene filleting plate, and its complementary space acrylamide sand grout of groove is filled, the two component polysulfide sealant shutoff in polyethylene filleting plate top.
5. the method for attachment of variable cross-section continuous rigid frame aqueduct according to claim 3, it is characterized in that: described U-shaped GB composite rubber water stop two ends are provided with stainless steel sealing termination, stainless steel sealing termination adopts modified epoxide resin adhesive to be closely pasted on groove notch and lead-over groove web handover region, U-shaped GB composite rubber water stop two ends adopt GB offset plate to be closely pasted on stainless steel sealing termination, and remainder adopts GB offset plate to be closely pasted on groove notch bottom surface.
6. the syndeton of the variable cross-section continuous rigid frame aqueduct that method is formed according to the arbitrary claim of Claims 1 to 5, comprise single hole aqueduct (1) and diplopore aqueduct (3), it is characterized in that: between single hole aqueduct (1) and diplopore aqueduct (3), be provided with lead-over groove (2); Lead-over groove (2) bottom is provided with antipriming (12).
7. the syndeton of variable cross-section continuous rigid frame aqueduct according to claim 6, it is characterized in that: the cross sectional shape of described single hole aqueduct (1) is rectangle, single hole aqueduct base plate is inclined plane, and inclined plane is provided with anchoring tooth plate (4), and anchoring tooth plate is provided with pave-load layer (5).
8. the syndeton of variable cross-section continuous rigid frame aqueduct according to claim 7, is characterized in that: is provided with dividing plate (6) in the middle of described diplopore aqueduct (3), cross sectional shape is day font, and diplopore aqueduct base plate is inclined plane; Described lead-over groove (2) is corresponding with the end section that single hole aqueduct (1) connects and single hole aqueduct cross section, lead-over groove is corresponding with the end section that diplopore aqueduct connects and diplopore aqueduct cross section, is provided with the middle plate (9) corresponding with diplopore aqueduct internal partition (6) in the middle of diplopore aqueduct (3); Middle plate end is positioned at close to lead-over groove medium position, and middle plate end is connected with lead-over groove base plate through sealing (10), and one end that diplopore aqueduct is connected with single hole aqueduct is provided with bed course (11), is provided with antipriming (12) between bed course and sealing.
9. the syndeton of variable cross-section continuous rigid frame aqueduct according to claim 8, it is characterized in that: described sealing (10) and bed course (11) seam crossing top are provided with groove (22), closed-cell foam plate (14) is plugged with in sealing and bed course seam, U-shaped GB composite rubber water stop (15) is provided with in the seam at closed-cell foam plate top, waterstop both sides are fixed on groove floor by bolt (16), be lined with GB offset plate (17) between waterstop and groove floor, the electrolysis of bolt and waterstop is provided with pressing plate (18); Waterstop top is provided with polyethylene filleting plate (19), and its complementary space of groove acrylamide sand grout (20) is filled, two component polysulfide sealant (21) shutoff in polyethylene filleting plate top.
10. the syndeton of variable cross-section continuous rigid frame aqueduct according to claim 9, it is characterized in that: described U-shaped GB composite rubber water stop (15) two ends are provided with stainless steel sealing termination (26), stainless steel sealing termination is pasted on groove notch and lead-over groove web handover region, U-shaped GB composite rubber water stop (15) two ends are pasted on stainless steel sealing termination (26), and remainder is then pasted on groove (22) notch bottom surface.
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| CN201510339771.8A CN105317021B (en) | 2015-06-18 | 2015-06-18 | A kind of connection method of variable cross-section continuous rigid frame aqueduct and structure |
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| CN107034927A (en) * | 2017-06-01 | 2017-08-11 | 河北宝力工程装备股份有限公司 | Caulking type sealing component |
| CN110777732A (en) * | 2019-12-11 | 2020-02-11 | 河南省水利勘测设计研究有限公司 | Back water stopping method for joint between water inlet pool and main canal box culvert of supporting engineering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107034927A (en) * | 2017-06-01 | 2017-08-11 | 河北宝力工程装备股份有限公司 | Caulking type sealing component |
| CN110777732A (en) * | 2019-12-11 | 2020-02-11 | 河南省水利勘测设计研究有限公司 | Back water stopping method for joint between water inlet pool and main canal box culvert of supporting engineering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105317021B (en) | 2017-06-16 |
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