CN105064289A - Concrete panel structure applied to high-toe wall and construction method - Google Patents

Concrete panel structure applied to high-toe wall and construction method Download PDF

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Publication number
CN105064289A
CN105064289A CN201510472576.2A CN201510472576A CN105064289A CN 105064289 A CN105064289 A CN 105064289A CN 201510472576 A CN201510472576 A CN 201510472576A CN 105064289 A CN105064289 A CN 105064289A
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China
Prior art keywords
toe
slope
concrete
concrete slab
construction
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CN201510472576.2A
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CN105064289B (en
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熊燕梅
吴森华
覃昕慧
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Powerchina Huadong Engineering Corp Ltd
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Powerchina Huadong Engineering Corp Ltd
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Abstract

The invention relates to a concrete panel structure applied to a high-toe wall and a construction method, in order to improve stress and deformation conditions of a toe board and the overall stability of a panel, thereby improving the operation safety and reliability of a project. The concrete panel structure is characterized in that the concrete panel structure applied to the high-toe wall is provided with a concrete panel, toe boards arranged at the periphery of the concrete panel, and a rock-filled layer below the concrete panel; the toe boards arranged along a side slope of a mountain body is excavated to form a side surface slope with the gradient of 1:0.5; a balance weight type toe wall is arranged between the side surface slope and the concrete panel; a slope with the bottom extending outward is arranged on one side, close to the concrete panel, of the balance weight type toe wall; a balance weight platform is arranged on one side, close to the side surface slope, of the balance weight type toe wall; a groove of which the cross section is in an inverse-trapezoid shape is formed between the balance weight platform and the side surface slope; the groove is backfilled with rock ballast; the concrete panel is vertically connected with the balance weight type toe wall; and a water stop system is arranged in a connection seam formed by the concrete panel and the balance weight type toe wall.

Description

A kind of concrete surface plated construction and construction method applying High-toe wall
Technical field
The present invention relates to a kind of concrete surface plated construction and the construction method of applying High-toe wall.Mainly be applicable in Concrete Face Rockfill Dam engineering due to the factors such as geology orographic condition cause toe board can not the similar engineering of smooth-going setting.
Background technology
In Concrete Face Rockfill Dam engineering, the requirement of toe board to basis is higher, and " Concrete Face Rockfill Dam design specifications " (DL/T5016-2011) specifies: toe board should be placed in hard, not erosion and the weak weathering that can be in the milk, weak off-load on fresh matrix.But in Practical Project, due to the impact of geology orographic condition, toe board regional area basis possibility cutting depth is comparatively large, and then makes the toe board at this position can not smooth-goingly be connected with periphery toe board; The fluctuating that toe board foundation plane is larger simultaneously brings certain impact to the monolithic stability of panel.
Summary of the invention
The technical problem to be solved in the present invention is: for above-mentioned Problems existing, a kind of concrete surface plated construction and the construction method of applying High-toe wall are provided, improve the stability of the stressed of toe board and deformation condition, increase panels en bloc, the safety of engineering operation and reliability are strengthened.
The technical solution adopted in the present invention is: a kind of concrete surface plated construction applying High-toe wall, there is concrete slab, be located at the toe board of this panel periphery, and the heap rock layers below concrete slab, it is characterized in that: along the slope, side of the toe board excavation formation 1:0.5 that massif side slope is arranged, between this slope, side and concrete slab, be provided with the toe wall of load retaining wall; Described toe wall is the slope that bottom outwards expands by concrete slab side, and toe wall is weight platform by side, slope, side, and becomes section to be the groove of inverted trapezoidal shape with side domatic, and in groove, backfill has rock ballast material; Described concrete slab and toe wall vertical connection are also furnished with water-stopping system in the connecting sewing formed.
Between described heap rock layers and concrete slab, be furnished with bitumen sand cushion near toe wall place.
The bottom of described toe wall is provided with the vertical dowel arranged, one end of this dowel is welded on the reinforcing bar bottom toe wall, and the length that the other end gos deep into basement rock below toe wall is more than or equal to 5m, and arrangement pitch is 1 ~ 2m.
The gradient that described toe wall expanding reach connects with heap rock layers is 1:N, N=0.3 ~ 0.7.
Described water-stopping system comprises the base copper sealing be embedded in connecting sewing, middle part rubber bar, stitches embedded underfill material, and is arranged on the surface watertight seal in this connecting sewing top V-type groove; Described surface watertight seal comprises the antiseepage protective cover sheet on SR filler in the rubber bar of V-type trench bottom, V-type groove and top layer.
The construction method of the concrete surface plated construction of the present invention's application High-toe wall, comprises the following steps:
1, the anchoring of toe wall: arrange toe wall between concrete slab and slope, side, adopts dowel zygodactyl wall to carry out anchoring, and firmly, arrangement pitch is 1 ~ 2m to the reinforcement welding bottom this dowel and toe wall, and the length going deep into basement rock below toe wall is more than or equal to 5m;
2, the building of toe wall: toe wall base foundation carries out the concrete pouring construction of toe wall after having excavated, toe wall adopts load retaining wall structure, and the weight platform of toe wall becomes section to be the groove of inverted trapezoidal shape with side domatic, and it is closely knit to adopt rock ballast material to backfill this groove;
3, sealing and caulking material filling: between heap rock layers and concrete slab, bitumen sand cushion is arranged near toe wall place, after the construction of this bitumen sand cushion, in the connecting sewing that toe wall and concrete slab are formed, base copper sealing, middle part rubber bar be installed and stitch embedded underfill material;
4, concrete slab is built: concreting panel above heap rock layers, and strengthens at base copper sealing position vibrating;
5, surface watertight seal construction: arrange surface watertight seal in the top V-type groove of concrete slab and toe wall connecting sewing, this surface watertight seal comprises the antiseepage protective cover sheet on SR filler in the rubber bar of V-type trench bottom, V-type groove and top layer.
The invention has the beneficial effects as follows: the setting of High-toe wall in the present invention, make the axis of toe board more smooth-going, improve the stressed of toe board and deformation condition; In addition, the setting of High-toe wall, adds the lateral rigidity support of concrete slab and the resistance to overturning of panel, the safety of engineering operation and reliability is strengthened.
Accompanying drawing explanation
Accompanying drawing 1 is floor map of the present invention.
Accompanying drawing 2 is generalized sections of the present invention.
Accompanying drawing 3 is office of the present invention section portion schematic diagrames.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the present embodiment is a kind of concrete surface plated construction and construction method of applying High-toe wall, this structure comprises heap rock layers 12 below by concrete slab 6, concrete slab, is arranged in the toe board 10 of concrete slab 6 periphery, and excavates along the toe board 10 that massif side slope is arranged the slope, side 9 forming 1:0.5; The toe wall 1 of load retaining wall is set between concrete slab 6 and slope, side 9, and between heap rock layers 12 and concrete slab 6, arranges bitumen sand cushion 11 near toe wall 1 place.
In the present embodiment, toe wall 1 is that bottom outwards expands by concrete slab 6 side and the gradient connected with heap rock layers 12 is the slope of 1:N, N=0.3 ~ 0.7, and the top on slope should ensure connection orthogonal with concrete slab 6 as far as possible; Toe wall 1 is weight platform by side, slope, side 9, and becomes section to be the groove of inverted trapezoidal shape with side domatic, and it is closely knit that this groove adopts rock ballast material 8 to backfill; Toe wall 1 connects with concrete slab 6 in the connecting sewing that formed and is furnished with water-stopping system; Vertical welding dowel 2 on toe wall 1 base foundation reinforcing bar, the arrangement pitch of this dowel 2 is 1 ~ 2m, and the length going deep into basement rock below toe wall is not less than 5m.
As shown in Figure 3, water-stopping system comprises the base copper sealing 3 be embedded in connecting sewing, middle part rubber bar 4, stitches embedded underfill material 5, and is arranged on the surface watertight seal 7 in this connecting sewing top V-type groove; Surface watertight seal 7 comprises the antiseepage protective cover sheet on SR filler in the rubber bar of V-type trench bottom, V-type groove and top layer.
The Specific construction step of the present embodiment is as follows:
A. the anchoring of toe wall 1: toe wall 1 is set between concrete slab 6 and slope, side 9, for guaranteeing the stability of toe wall 1, dowel 2 zygodactyl wall 1 is adopted to carry out anchoring, dowel 2 should be firm with toe wall 1 base foundation reinforcement welding, generally dowel 2 arrangement pitch is 1 ~ 2m, and the length that dowel 2 gos deep into basement rock below toe wall 1 is not less than 5m;
B. the building of toe wall 1: after toe wall 1 base foundation excavation reaches designing requirement, (design size of toe wall 1 should be determined as calculated to carry out concrete pouring construction according to the design size of toe wall 1, during computational analysis, not only to consider that the stress of self is with stable, also should consider the resistance to overturning of toe wall, concrete slab and toe board etc. simultaneously); Toe wall 1 adopts load retaining wall structure, adopts rock ballast material 8 to backfill closely knit, thus add the stability of toe wall and entirety between its weight platform and slope, side 9; Toe wall 1 should ensure orthogonal with concrete slab 6 by the top of piling slope, rock layers 12 1 side as far as possible, thus make both contact and fully stressed, the bottom on slope, face is connect with heap rock layers 12 and the slope outwards expanded, the gradient is 1:N, N=0.3 ~ 0.7, is convenient to the construction rolling of dam material at toe wall position piling rock layers 12;
C. sealing and caulking material filling: arrange bitumen sand cushion 11 near toe wall 1 place above heap rock layers 12, after the construction of this bitumen sand cushion, install base copper sealing 3, middle part rubber bar 4 and stitch embedded underfill material 5 in the connecting sewing that toe wall 1 and concrete slab 6 are formed, the setting of middle part rubber bar 4 is mainly the stop safe water strengthening toe wall 1 site boundary seam;
D. the building of concrete slab 6: carry out building of concrete slab 6 according to the thickness of design, at base copper sealing 3 position, should strengthen vibrating, guarantee the concrete density in sealing position, the construction technology level of site operation personnel should be strengthened simultaneously, ensure the damage that can not cause base copper sealing 3 in construction;
E. surface watertight seal 7 is constructed: arrange surface watertight seal 7 in the top V-type groove of the connecting sewing formed at toe wall 1 and concrete slab 6, and surface watertight seal 7 comprises the antiseepage protective cover sheet etc. on SR filler in the rubber bar of V-type trench bottom, V-type groove, top layer; Wherein the construction of surface watertight seal 7 should be carried out after bottom concrete strength reaches 70% of design strength, full and closely knit in order to ensure SR filler, and SR plug is filled out and should be adopted mechanical execution.

Claims (6)

1. apply the concrete surface plated construction of High-toe wall for one kind, there is concrete slab (6), be located at the toe board (10) of this panel periphery, and the heap rock layers (12) of concrete slab (6) below, it is characterized in that: along the slope, side (9) of toe board (10) the excavation formation 1:0.5 that massif side slope is arranged, between this slope, side and concrete slab (6), be provided with the toe wall (1) of load retaining wall; Described toe wall (1) is the slope that bottom outwards expands by concrete slab (6) side, toe wall is weight platform by slope, side (9) side, and becoming section to be the groove of inverted trapezoidal shape with side domatic, in groove, backfill has rock ballast material (8); Described concrete slab (6) and toe wall (1) vertical connection are also furnished with water-stopping system in the connecting sewing formed.
2. the concrete surface plated construction of application High-toe wall according to claim 1, it is characterized in that: between described heap rock layers (12) and concrete slab (6), be furnished with bitumen sand cushion (11) near toe wall (1) place.
3. the concrete surface plated construction of application High-toe wall according to claim 1 and 2, it is characterized in that: the bottom of described toe wall (1) is provided with the vertical dowel (2) arranged, one end of this dowel is welded on the reinforcing bar bottom toe wall, the length that the other end gos deep into basement rock below toe wall is more than or equal to 5m, and arrangement pitch is 1 ~ 2m.
4. the concrete surface plated construction of application High-toe wall according to claim 3, is characterized in that: the gradient that described toe wall (1) expanding reach connects with heap rock layers (12) is 1:N, N=0.3 ~ 0.7.
5. the concrete surface plated construction of application High-toe wall according to claim 4, it is characterized in that: described water-stopping system comprises the base copper sealing (3) be embedded in connecting sewing, middle part rubber bar (4), stitches embedded underfill material (5), and is arranged on the surface watertight seal (7) in this connecting sewing top V-type groove; Described surface watertight seal (7) comprises the antiseepage protective cover sheet on SR filler in the rubber bar of V-type trench bottom, V-type groove and top layer.
6. a construction method for the concrete surface plated construction of application High-toe wall as claimed in claim 4, is characterized in that step is as follows:
6.1, the anchoring of toe wall (1): toe wall (1) is set between concrete slab (6) and slope, side (9), dowel (2) zygodactyl wall (1) is adopted to carry out anchoring, reinforcement welding bottom this dowel and toe wall is firm, arrangement pitch is 1 ~ 2m, and the length going deep into basement rock below toe wall is more than or equal to 5m;
6.2, the building of toe wall (1): after toe wall (1) base foundation has been excavated, carry out the concrete pouring construction of toe wall (1), toe wall adopts load retaining wall structure, weight platform and slope, side (9) of toe wall form the groove that section is inverted trapezoidal shape, and adopt rock ballast material (8) to backfill closely knit this groove;
6.3, sealing and caulking material filling: arrange bitumen sand cushion (11) between heap rock layers (12) and concrete slab (6), near toe wall (1) place, after the construction of this bitumen sand cushion, base copper sealing (3), middle part rubber bar (4) are installed and stitch embedded underfill material (5) in the connecting sewing that toe wall (1) and concrete slab (6) are formed;
6.4, concrete slab (6) is built: at heap rock layers (12) top concreting panel (6), and strengthens at base copper sealing (3) position vibrating;
6.5, surface watertight seal (7) construction: arrange surface watertight seal (7) in the top V-type groove of concrete slab (6) and toe wall (1) connecting sewing, this surface watertight seal comprises the antiseepage protective cover sheet on SR filler in the rubber bar of V-type trench bottom, V-type groove and top layer.
CN201510472576.2A 2015-08-04 2015-08-04 Concrete panel structure applied to high-toe wall and construction method Active CN105064289B (en)

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CN105064289B CN105064289B (en) 2017-03-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5891212A (en) * 1981-11-25 1983-05-31 Taisei Corp Rock-fill dam
CN1760462A (en) * 2005-11-13 2006-04-19 中国水电顾问集团华东勘测设计研究院 Waterstop structure of peripheral joint of rock fill dam with face slab, and construction method
CN104120686A (en) * 2014-07-28 2014-10-29 中国电建集团西北勘测设计研究院有限公司 High elastic die cushion type composite dam
CN205000296U (en) * 2015-08-04 2016-01-27 中国电建集团华东勘测设计研究院有限公司 Use concrete panel structure of high toe wall

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5891212A (en) * 1981-11-25 1983-05-31 Taisei Corp Rock-fill dam
CN1760462A (en) * 2005-11-13 2006-04-19 中国水电顾问集团华东勘测设计研究院 Waterstop structure of peripheral joint of rock fill dam with face slab, and construction method
CN104120686A (en) * 2014-07-28 2014-10-29 中国电建集团西北勘测设计研究院有限公司 High elastic die cushion type composite dam
CN205000296U (en) * 2015-08-04 2016-01-27 中国电建集团华东勘测设计研究院有限公司 Use concrete panel structure of high toe wall

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