CN211973377U - Anti-impact pile protection plate combined structure - Google Patents
Anti-impact pile protection plate combined structure Download PDFInfo
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- CN211973377U CN211973377U CN202020447475.6U CN202020447475U CN211973377U CN 211973377 U CN211973377 U CN 211973377U CN 202020447475 U CN202020447475 U CN 202020447475U CN 211973377 U CN211973377 U CN 211973377U
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Abstract
The utility model provides a scour protection stake board integrated configuration, include the whole structure of constituteing by a plurality of scour protection stake board integrated configuration, scour protection stake board integrated configuration includes upper portion scour protection board and constitutes with a plurality of fender piles of upper portion scour protection board sub-unit connection, be equipped with the construction joint between the upper portion scour protection board of per two scour protection stake board integrated configuration, the upper portion scour protection board outside of the whole both sides of structure that a plurality of scour protection stake board integrated configuration become is equipped with the structure joint, each upper portion scour protection board at a plurality of scour protection stake board integrated configuration top links roof beam through the board top and connects and form a whole, evenly arrange on the board top even roof beam have a plurality of prestressed anchorage cable of passing board top even roof beam and anchoring in protection river course side slope mountain body basement rock in advance. The utility model provides a scour protection protects pile sheet joint construction can solve the protection under geological environment complex conditions such as mountain valley is precipitous, the river course is narrow, deep overburden and handle the technological problem, protects processing, energy dissipation scour protection in the influence area of both sides of the trip when the dam high water head flood discharge of power station.
Description
Technical Field
The utility model belongs to the technical field of the water conservancy and hydropower construction technique and specifically relates to a scour protection protects pile sheet united structure that processing, energy dissipation scour protection are protected to downstream both sides influence area when power station dam high water head floods.
Background
Due to the development requirement of hydropower resources, the hydropower station dam is mostly built in a high mountain canyon, the valley is narrow, the riverbed covering layer is deep, and the environment and geological conditions are complex in structure, high in technical difficulty, limited in environment, high in construction difficulty and high in safety risk. As the dam construction requirement must meet the flood control flood-fighting flood discharge safety level requirement, the protection treatment on the two bank affected areas of the downstream flood discharge of the high dam is a normal state, if the protection treatment is improper, large-scale instability and landslide of the two banks can block the river channel, disastrous consequences can be caused to the power station, even the life and property safety of downstream residents can be affected, and immeasurable loss can be brought to the country.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a scour protection pile protection plate combined structure, which can solve the technical problem of protection treatment under the complex geological environment conditions of steep valley, narrow river channel, deep covering layer and the like, and carry out protection treatment, energy dissipation and scour protection on the downstream two bank affected areas when the hydropower station dam discharges flood at high water head; simple structure, easy construction, economy and reasonableness.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a scour protection stake board integrated configuration, include the whole structure of constituteing by a plurality of scour protection stake board integrated configuration, scour protection stake board integrated configuration includes upper portion scour protection board and constitutes with a plurality of fender piles of upper portion scour protection board sub-unit connection, be equipped with the construction joint between the upper portion scour protection board of per two scour protection stake board integrated configuration, the upper portion scour protection board outside of the whole both sides of structure that a plurality of scour protection stake board integrated configuration become is equipped with the structure joint, each upper portion scour protection board at a plurality of scour protection stake board integrated configuration top links roof beam through the board top and connects and form a whole, evenly arrange on the board top even roof beam have a plurality of prestressed anchorage cable of passing board top even roof beam and anchoring in protection river course side slope mountain body basement rock in advance.
Preferably, a plurality of anchor cable piers are cast on the outer side surface of the plate top coupling beam.
Preferably, the depth of the lower part of an upper protection plate of the anti-impact pile plate combined unit entering the complete bedrock is 3-5 m.
A construction method of the anti-impact pile-plate combined structure comprises the following steps:
firstly, excavating a supporting and backfilling operation platform on a side slope at the position of the side slope; adopting artificial well excavation construction, carrying out pile-plate combined excavation wellhead locking opening lining construction, then carrying out well excavation operation of an I-sequence anti-impact pile-protecting plate combined structure on the side slope on one side of the protective river channel, then carrying out concrete pouring of the I-sequence anti-impact pile-protecting plate combined structure, and carrying out concrete pouring of the II-sequence anti-impact pile-protecting plate combined structure on the side slope on the other side of the protective river channel according to the steps; and then pile plate top connecting beams are installed on a plurality of anti-impact pile plate combined units of the I-order anti-impact pile plate combined structure and a plurality of anti-impact pile plate combined units of the II-order anti-impact pile plate combined structure, and then a plurality of prestressed anchor cables are installed, so that the construction of the anti-impact pile plate combined structure is completed.
Preferably, the detailed steps of the method are as follows:
step 1: excavating a supporting and backfilling operation platform on the side slope of the position where the supporting and backfilling operation platform is located;
step 2: performing anti-seepage treatment;
and step 3: pile plate jointly excavates well head fore shaft construction and well head enclosure:
step 3-1: the pile plate jointly excavates the shaft mouth and locks the excavation lining construction, about 1m of depth;
step 3-2: installing a slag vertical lifting system and a safety protection device and debugging;
and 4, step 4: i-sequence anti-impact pile protection plate combined structure well excavation and acceptance inspection:
step 4-1: excavating and supporting a side slope covering layer, wherein the thickness of the covering layer is 0.6-1.2 m by layer according to stratum properties, a concrete lining and a steel support are adopted for supporting, one layer of support is excavated, and the side slope covering layer is installed next to the steel support;
step 4-2: excavating and supporting slope bedrock, wherein the bedrock is excavated in a layered mode, the thickness of the bedrock is 1.5-2.0 m according to the rock stratum property, and after entering the bedrock, a layer of support is excavated by adopting a spray anchor support;
step 4-3: excavating pile plates to a designed elevation in a combined mode, carrying out combined acceptance inspection, and entering the next procedure for construction after the pile plates are qualified;
and 5: i-order anti-scour pile protection plate combined structure concrete construction:
step 5-1: the reinforcing steel bars of the anti-impact piles of each anti-impact pile plate combination unit are manufactured and installed, a reinforcing cage is integrally manufactured, and a truck crane is hoisted into a well;
step 5-2: the upper impingement plate steel bars of each impingement plate combination unit are installed in the pit manually;
step 5-3: after the installation of the steel bars and the embedded parts is finished, checking and accepting;
step 5-4: pouring concrete, namely putting the concrete into a bin by adopting a chute, and continuously pouring the top at one time; the pile well with water seepage is partially poured by underwater concrete; namely, the concrete construction of the I-sequence anti-impact pile-protecting plate combined structure is completed;
step 6: repeating the steps 1-5 to complete the concrete construction of the I-sequence anti-impact pile-protecting plate combined structure;
and 7: pile plate top connecting beams are arranged on a plurality of anti-impact pile plate combined units of the I-order anti-impact pile plate combined structure and a plurality of anti-impact pile plate combined units of the II-order anti-impact pile plate combined structure, then a plurality of prestressed anchor cables are arranged,
and finishing the construction of the anti-impact pile-plate combined structure.
The utility model provides a scour protection protects pile sheet combined structure adopts the pile sheet combined form that "upper portion scour protection board + lower part circular (scour protection) stake" combines together, and the scour protection stake is main atress structure, and its main effect is fixed scour protection board and undertakes the thrust of scour protection board transmission, guarantees slope overall stability; the anti-impact plate and the anti-impact pile form a closed wall body to prevent a covering layer on the surface layer of the side slope of the river course and strongly weathered rock bodies from being washed (drawn) and brushed; the plate pile top is provided with a plate top connecting beam and a prestressed anchor cable according to the structural design requirement, so that the structural integrity and stability are improved; the technical problem of protection treatment under complex geological environment conditions such as steep valleys, narrow river channels, deep covering layers and the like can be solved, and protection treatment, energy dissipation and scour prevention are carried out on the influence areas of the two banks at the downstream when the hydropower station dam is subjected to high-water head flood discharge; simple structure, easy construction, economy and reasonableness.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
fig. 3 is a side view of the present invention;
FIG. 4 is a schematic cross-sectional view of the operation platform and the anti-seepage treatment in the two steps 1 and 2 of the embodiment of the present invention;
FIG. 5 is a schematic plan sectional view of the concrete dug and poured in the two steps 4 and 5 of the embodiment of the present invention;
fig. 6 is a schematic longitudinal section of the concrete dug and poured in the two steps 4 and 5 of the embodiment of the present invention.
Detailed Description
Example one
As shown in fig. 1-3, an anti-impact pile plate combined structure, include the whole structure of compriseing a plurality of anti-impact pile plate combined unit, anti-impact pile plate combined unit includes upper portion impingement baffle 2 and constitutes with a plurality of fender pile 1 of 2 sub-unit connections of upper portion impingement baffle, be equipped with construction joint 6 between the upper portion impingement baffle 2 of per two anti-impact pile plate combined unit, the 2 outsides of upper portion impingement baffle of the whole both sides of structure that a plurality of anti-impact pile plate combined unit are constituteed are equipped with structural joint 7, each upper portion impingement baffle 2 at a plurality of anti-impact pile plate combined unit tops is even connected through roof beam 3 and is formed a whole, evenly arrange on roof beam 3 and have a plurality of pre-stressed anchor cables 5 that pass roof beam 3 and anchor in protection river course side slope mountain body basement rock in advance.
And a plurality of anchor cable anchor piers 4 are poured on the outer side surface of the plate top connecting beam 3.
The depth of the lower part of the upper protection plate 2 of the anti-impact pile plate combined unit entering the complete side slope bedrock 19 is 3-5 m.
The plane size of the upper impingement baffle 2 is 8m long and 2m wide, the radius of the protective pile 1 is 1m, and the pile spacing is 4 m;
be provided with the construction joint 6 of keyway between two adjacent upper portion impingement baffles 2, the steel bar crosses the joint connection, and every 24 ~ 32m is provided with the structure joint 7 of keyway, and the roof is even 3 structure joints of roof beam and 7 unanimities of structure joint of upper portion impingement baffle 2, and every 24 ~ 32m sets up.
Example two
As shown in fig. 4-6, a construction method of the anti-impact pile-plate combination structure includes:
firstly, excavating a supporting and backfilling operation platform 17 on the side slope of the position; then, carrying out pile-plate combined excavation wellhead locking opening 10 lining construction by adopting artificial well excavation construction, then carrying out I-order anti-impact pile-protecting plate combined structure well excavation operation on the side slope on one side of the protection river channel, then carrying out concrete pouring of the I-order anti-impact pile-protecting plate combined structure, and carrying out concrete pouring of the II-order anti-impact pile-protecting plate combined structure on the side slope on the other side of the protection river channel according to the steps; and then installing pile plate top connecting beams 3 on a plurality of anti-impact pile plate combined units of the I-order anti-impact pile plate combined structure and a plurality of anti-impact pile plate combined units of the II-order anti-impact pile plate combined structure, and then installing a plurality of prestressed anchor cables 5, namely completing the construction of the anti-impact pile plate combined structure.
The detailed steps of the method are as follows:
step 1: excavating a supporting and backfilling operation platform 17 on the side slope at the position, checking whether the construction road and the construction operation platform 17 are filled, and ensuring that the construction road is smooth and the platform surface is flat; and then measuring and lofting are carried out, and wind, water and electric pipelines are arranged.
Step 2: and (3) seepage control treatment: and (3) carrying out high-pressure rotary spraying grouting treatment on the side slope covering layer 18 by adopting a high-pressure rotary spraying grouting pipe 15, and carrying out curtain grouting on the side slope bedrock 19 by adopting a curtain grouting pipe 16.
And step 3: and (3) pile plate combined excavation wellhead locking 10 construction and wellhead enclosure:
step 3-1: the pile plate jointly excavates the shaft opening locking notch 10 and excavates the lining construction, about 1m of depth;
step 3-2: the installation is slagging tap and is promoted the system 8 and the safety arrangement 9 and debug:
the slag-out vertical lifting system 8 is manufactured by combining square steel and channel steel and comprises a base, a support frame, a winch, a steel wire rope, a pulley and a suspension arm, wherein the suspension arm can swing within the range of 180 degrees; the hoisting system is installed and fixed at a wellhead, the winch is started to lift the hopper to convey materials (or discharge slag), and the suspension arm is swung to enable the hopper to discharge materials outside the well.
The safety protection device 9 is a purchased finished product of a limiter, is arranged at the front end of the lifting arm and is sleeved on the steel wire, so that the accidents caused by excessive lifting of the winch and breaking of the steel wire rope are prevented.
Step 3-3: well mouth protection is well done, because the side facing the slag discharge needs to move frequently, the telescopic movable railing 11 which is safe and reliable is adopted, the operation of workers is convenient, other three sides all adopt fixed sideboard, and the heights of the sideboard and the railing are not lower than 1.2 m.
And 4, step 4: i-sequence anti-impact pile protection plate combined structure well excavation and acceptance inspection:
step 4-1: excavating and supporting a side slope covering layer 18, wherein the thickness of the covering layer is 0.6-1.2 m by layer according to stratum properties, a concrete lining and a steel support are adopted for supporting, a layer of supporting layer is excavated, and the supporting layer is installed next to the steel support;
step 4-2: the slope bedrock 19 is excavated and supported, the bedrock is excavated in a layered mode, the thickness is 1.5-2.0 m according to the rock stratum property, and a layer of support is excavated by adopting a spray anchor support after entering the bedrock;
step 4-3: excavating pile plates to a designed elevation in a combined mode, carrying out combined acceptance inspection, and entering the next procedure for construction after the pile plates are qualified;
the support form excavated in the side slope covering layer 18 is 'retaining wall concrete 12+ horizontal steel support 13 and vertical steel support 14', the horizontal steel support 13 is I20a I-steel, and the vertical steel support 14 is I16 channel steel; and after the excavation enters the complete bedrock, the form is adjusted to a spray anchor supporting form, so that the safety operation is ensured.
And 5: i-order anti-scour pile protection plate combined structure concrete construction:
step 5-1: the anti-impact piles 1 of each anti-impact pile plate combined unit are manufactured by steel bars, a steel bar cage is integrally manufactured, and a truck crane is hoisted into a well;
step 5-2: the upper impingement plate steel bars of each impingement plate combination unit are installed in the pit manually;
step 5-3: after the installation of the steel bars and the embedded parts is finished, checking and accepting;
step 5-4: pouring concrete, namely putting the concrete into a bin by adopting a chute, and continuously pouring the top at one time; the pile well with water seepage is partially poured by underwater concrete; and the concrete construction of the I-sequence anti-impact pile-protecting plate combined structure is completed.
Step 6: and (5) repeating the steps 1-5 to complete the concrete construction of the I-sequence anti-impact pile-protecting plate combined structure.
And 7: a pile plate top connecting beam 3 is arranged on a plurality of anti-impact pile plate combined units of the I-order anti-impact pile plate combined structure and a plurality of anti-impact pile plate combined units of the II-order anti-impact pile plate combined structure, and a plurality of prestressed anchor cables 5 are arranged,
and finishing the construction of the scour prevention pile-plate combined structure to form a river channel energy dissipation scour prevention system.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (2)
1. The utility model provides an scour protection fender pile sheet integrated configuration which characterized in that: including the structure that constitutes by a plurality of scour protection stake board combination units is whole, scour protection stake board combination unit includes upper portion scour protection board (2) and constitutes with a plurality of fender pile (1) of upper portion scour protection board (2) sub-unit connection, be equipped with construction joint (6) between upper portion scour protection board (2) of per two scour protection stake board combination units, each upper portion scour protection board (2) at a plurality of scour protection stake board combination unit tops are connected through board top even roof beam (3) and are formed a whole, board top even arranges on roof beam (3) and has a plurality of prestressed anchorage cable (5) of passing board top even roof beam (3) and anchoring in protection river course side slope mountain body basement rock in advance.
2. The scour protection protects slabstone combined structure of claim 1, characterized in that: and a plurality of anchor cable anchor piers (4) are poured on the outer side surface of the plate top connecting beam (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020447475.6U CN211973377U (en) | 2020-03-31 | 2020-03-31 | Anti-impact pile protection plate combined structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254879A (en) * | 2020-03-31 | 2020-06-09 | 中国葛洲坝集团市政工程有限公司 | Anti-impact pile protection plate combined structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254879A (en) * | 2020-03-31 | 2020-06-09 | 中国葛洲坝集团市政工程有限公司 | Anti-impact pile protection plate combined structure and construction method |
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