CN107794957A - The horizontal static load device of super-large diameter single-pile foundation and test method - Google Patents
The horizontal static load device of super-large diameter single-pile foundation and test method Download PDFInfo
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- CN107794957A CN107794957A CN201711195550.3A CN201711195550A CN107794957A CN 107794957 A CN107794957 A CN 107794957A CN 201711195550 A CN201711195550 A CN 201711195550A CN 107794957 A CN107794957 A CN 107794957A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- General Engineering & Computer Science (AREA)
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses the horizontal static load device of super-large diameter single-pile foundation, including the tensile machine being arranged on pile body, the grip mechanism being arranged on outside pile body, pulley assembly and multistage anchor cable, anchor cable includes first section anchor cable, interlude anchor cable and latter end anchor cable, one end of first section anchor cable is connected with tensile machine, and the other end is connected with pulley assembly；One end of latter end anchor cable is connected with pulley assembly, and the other end is connected with grip mechanism；Interlude anchor cable is set around pulley assembly.Using the test method of described device, tensile machine is set on pile body；Grip mechanism is set outside pile body；Pulley assembly is set, one end of first section anchor cable is connected with tensile machine, the other end is connected with pulley assembly；Interlude anchor cable is set around pulley assembly；One end of latter end anchor cable is connected with pulley assembly, the other end is connected with grip mechanism.Compared with prior art, the present invention has the advantages that simple in construction, easy to operate, the economic, practical property of cost is strong.
Description
Technical field
The invention belongs to architecture foundation pile detection technique field, and in particular to a kind of horizontal static load dress of super-large diameter single-pile foundation
Put and test method.
Background technology
Horizontal static load test is to judge that pile foundation level bearing capacity the most directly with accurate method, passes through static load test
The rational rated figure of ground earth resistance and corresponding flexibly base system can be determined in the hope of the lateral subgrade reaction of foundation soil
Number, and obtain the horizontal bearing capacity of test pile.
Marine single pile, particularly marine super-large diameter single pile Its ultimate bearing capacity are much larger than normal dia pile foundation, and perpendicular
Similar to bearing capacity static load test, horizontal force experiment equally exists the problem of loading method is with tonnage is loaded.For conventional water
The horizontal force of work building such as Pile Foundation of Wharf or offshore wind turbine foundation sea single pile is tested, if continuing to use past counter-force stake pattern,
Beat single pile and be used as counter-force stake, only the fee of material of counter-force single pile just millions of members easily, and the not yet expense such as consideration ship machine.Cause
This must take into consideration new counter-force pattern, reduce test pile expense.
The content of the invention
The shortcomings that for above-mentioned prior art or deficiency, the technical problem to be solved in the present invention is to provide a kind of letter of structure
The horizontal static load device of super-large diameter single-pile foundation single, easy to operate, that the economic, practical property of cost is strong and test method.
In order to solve the above technical problems, the present invention has following form：
The horizontal static load device of super-large diameter single-pile foundation, including tensile machine, grip mechanism, pulley assembly and multistage anchor
Rope, the tensile machine are arranged on pile body, and the grip mechanism is arranged on the outside of the pile body and thrown to seabed, the anchor cable
Including first section anchor cable, interlude anchor cable and latter end anchor cable, one end of the first section anchor cable is fixedly connected with the tensile machine,
The other end is fixedly connected with the pulley assembly；One end of the latter end anchor cable is fixedly connected with the pulley assembly, the other end
It is fixedly connected with the grip mechanism；The interlude anchor cable is set around the pulley assembly.
The pulley assembly includes fixed pulley, at least one column and at least one movable pulley, the fixed pulley and institute
Column is stated to be fixedly mounted on the pile body；The movable pulley is arranged on the outside of the pile body；Described first section anchor cable one end is fixed
In the tensile machine, the other end is fixedly mounted on the column, and intermediate portion winds the fixed pulley and institute
State movable pulley setting；One end of the latter end anchor cable is fixed on the central shaft of last movable pulley, and the other end is fixedly mounted
In the grip mechanism；The interlude anchor cable winds the fixed pulley and the movable pulley is set, wherein, the interlude
One end of anchor cable is fixed on the column, and it is set around the fixed pulley and the movable pulley successively, and the other end fixes peace
On the central shaft of a upper movable pulley.
The column is identical with the setting quantity of the movable pulley.
One fewer than the setting quantity of the column or the movable pulley of the setting quantity of the interlude anchor cable.
It is additionally provided with the pile body and strengthens steel construction job platform.
The tensile machine is hoist engine.
The grip mechanism is high holding power anchor.
Super-large diameter single-pile foundation horizontally loading test method, S1：Tensile machine is set on the pile body；S2：Institute
State and grip mechanism is set outside pile body；S3：Pulley assembly is set, one end of the first section anchor cable and the tensile machine are fixed and connected
Connect, the other end is fixedly connected with the pulley assembly；The interlude anchor cable is set around the pulley assembly；By the end
One end of section anchor cable is fixedly connected with the pulley assembly, and the other end is fixedly connected with the grip mechanism.
In step S3, described first section anchor cable one end is fixedly mounted in the tensile machine, intermediate portion winding institute
State fixed pulley and the movable pulley is set, the other end is fixedly mounted on the column；By described in interlude anchor cable winding
Fixed pulley and the movable pulley are set, wherein, one end of the interlude anchor cable is fixed on the column, and it bypasses institute successively
State fixed pulley and the movable pulley is set, the other end is fixedly mounted on the central shaft of a movable pulley；By the latter end anchor
One end of rope is fixed on the central shaft of last movable pulley, and the other end is fixedly mounted in the grip mechanism.
Compared with prior art, the present invention has the following technical effect that：
The present invention can realize in-site installation and dismounting, simple to operate, reusable, eliminate and make counter-force stake, consolidate
Determine counterforce device or the high cost of ballast platform transport, greatly reduce input cost；
The present invention changes Impact direction using pulley assembly, and due to province's force characteristic of pulley assembly, hoist engine only needs to pacify
Put at the top of pile body and only need to apply the actual loading load much smaller than pile body, you can meet the needs of horizontal addload；The present invention
Purpose to the horizontal static load of super-large diameter single-pile foundation application is reached by pluck power caused by hoist engine, and coordinates normal direction to grab greatly
Power anchor provides tensioning stable horizontal pull；
The high holding power anchor that the present invention uses have stabilising fin, it is abundant and roomy, to the strong adaptabilities of various substrates, to nibble soil fast
Speed, grab the advantages that bottom stability is good, holding power to weight ratio is high.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1：The horizontal static load apparatus structure schematic diagram of super-large diameter single-pile foundation of the present invention；
Fig. 2：The top view of structure as shown in Figure 1；
Fig. 3：The structural representation of grip component in the present invention.
Embodiment
Design, concrete structure and the caused technique effect of the present invention are described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
As shown in Figure 1 to Figure 2, the horizontal static load device of the present embodiment super-large diameter single-pile foundation, including it is arranged on pile body 10
On tensile machine 20, be arranged on the outside of pile body 10 and throw to the grip mechanism 30 in seabed, pulley assembly and multistage anchor cable 50,
The anchor cable 50 includes first section anchor cable, interlude anchor cable and latter end anchor cable, one end and the puller system of the first section anchor cable
Structure 20 is fixedly connected, and the other end is fixedly connected with the pulley assembly；One end of the latter end anchor cable is consolidated with the pulley assembly
Fixed connection, the other end are fixedly connected with the grip mechanism 30；The interlude anchor cable is set around the pulley assembly.This reality
In-site installation and dismounting can be realized by applying example, simple to operate, reusable, eliminated and made counter-force stake, fixed counterforce device
Or the high cost of ballast platform transport, greatly reduce input cost.
The pulley assembly includes fixed pulley 12, at least one column 11 and at least one movable pulley 40, described fixed sliding
Wheel 12 and the column 11 are fixedly mounted on the pile body 10；The movable pulley 40 is arranged on the outside of pile body 10；It is described
First section anchor cable one end is fixedly mounted in the tensile machine 20, and the other end is fixedly mounted on the column 11, intermediate portion
The winding fixed pulley 12 and the movable pulley 40 is divided to set；One end of the latter end anchor cable is fixed on last movable pulley 40
Central shaft on, the other end is fixedly mounted in the grip mechanism 30；The interlude anchor cable winds the He of fixed pulley 12
The movable pulley 40 is set, wherein, one end of the interlude anchor cable is fixed on the column 11, and it is successively around described fixed sliding
Wheel 12 and the movable pulley 40 are set, and the other end is fixedly mounted on the central shaft of a movable pulley 40.Using pulley assembly
Impact direction can be changed, and due to province's force characteristic of movable pulley, hoist engine only needs to be placed at the top of pile body and only needs application remote small
In the actual loading load of pile body, you can meet the needs of horizontal addload.
The column 11 is identical with the setting quantity of the movable pulley 40, described in the setting quantity ratio of the interlude anchor cable
The setting quantity of column 11 or the movable pulley 40 is few one.To increase sliding stability, first section anchor cable or interlude anchor cable according to
Secondary to bypass the movable pulley 40 and fixed pulley 12, the other end is fixedly mounted on the column 11 corresponding with the movable pulley 40.
In the present embodiment, the setting quantity of the movable pulley 40 is not limited to as shown in Figure 1 two, further to reduce hoist engine
The pulling force of offer, the setting quantity of increase movable pulley 40 that can be suitably, the quantity of the column 11 and interlude anchor cable also phase
It should increase.
It is additionally provided with the pile body 10 and strengthens steel construction job platform 13, the reinforcement steel construction job platform 13 can increases
The intensity and rigidity of strong pile body 10, while provide job platform for test pile.
The tensile machine 20 is preferably hoist engine, or other can provide the mechanism of larger pluck power.
The grip mechanism 30 of the present embodiment is preferably high holding power anchor.The species of anchor is more, different with purposes by its structure, can
It is divided into stocked anchor, patent anchor, high holding power anchor and extraordinary anchor etc..Stocked anchor is simple in construction, and pawl power is big (holding power to weight ratio 4~8), and it is steady to grab bottom
It is qualitative preferable；But its inconvenience of casting anchor and collect, easily snarls anchor cable, hull bottom is easily scratched in shallow water anchorage.Two when patent anchor grabs soil
Pawl buries simultaneously, simple in construction, throw anchor operation and collection is convenient；It is easy during circulation but its grip is small (holding power to weight ratio 2.5~4)
Harrow loose soil and cause and drag of anchor.High holding power anchor point has bar high holding power anchor and without bar high holding power anchor, is characterized in that anchor fluke is wide and long, nibbles
Soil is deep, stability is good and holding power to weight ratio is big.The design feature of extraordinary anchor is different from common anchor, is generally used for buoy, light boat, floating dock
And the permanent mooring such as floating wharf.Marine anchor market at this stage is with first generation patent anchor (mainly Hall'sanchor and speke anchor
Deng) and second generation patent anchor (i.e. without bar high holding power anchor, mainly AC-14 types anchor etc.) based on, the former is applied to big-and-middle type ship,
The latter is applied to super large marine.
The present embodiment requires that anchor has preferable position stability.The sub-sea conditions of anchorage are very soft sill clay, ground
Matter is preferable.Analyzed with reference to species and the purposes of anchor, the AC-14 type anchors in high holding power anchor, have stabilising fin it is abundant and roomy, to each
The strong adaptability of kind of substrate, nibble it is native it is rapid, grab that bottom stability is good and holding power to weight ratio height (value 12~14), also, AC-14 types are big
The grip of grip anchor is at least the common patent anchor of equivalent weight more than twice.To sum up, grip mechanism 30 is preferred described in the present embodiment
For the AC-14 types anchor (as shown in Figure 3) in high holding power anchor.
The present embodiment super-large diameter single-pile foundation horizontally loading test method, comprises the following steps：
Step 1：Tensile machine 20 is set on the pile body 10, hoist engine is preferably arranged on to the top of the pile body 10
Portion；
Step 2：Grip mechanism 30, the AC-14 type anchors being preferably provided with high holding power anchor are set outside the pile body 10；
Step 3：Install pulley assembly, one end of the first section anchor cable is fixedly connected with the hoist engine, the other end and
The pulley assembly is fixedly connected；The interlude anchor cable is set around the pulley assembly；By the one of the latter end anchor cable
End is fixedly connected with the pulley assembly, and the other end is fixedly connected with the high holding power anchor.
In above-mentioned steps three, it is specifically described with being provided with the embodiment of four movable pulleys 40：
In the present embodiment, four movable pulleys be named as successively the first movable pulley, second movable pulley, the 3rd it is dynamic
Pulley and the 4th movable pulley, the interlude anchor cable being corresponding in turn to the movable pulley entitled first interlude anchor successively
Rope, the second interlude anchor cable and the 3rd interlude anchor cable, are named as successively with the column that the movable pulley is corresponding in turn to
First column, the second column, the 3rd column and the 4th column.
One end of the first section anchor cable is fixedly mounted on the hoist engine, intermediate portion wind the fixed pulley and
First movable pulley is set, and the other end is fixedly mounted on the first column；One end of the first interlude anchor cable is fixed on
On two columns, it is set around the fixed pulley and the second movable pulley successively, and the other end is fixedly mounted in the first movable pulley
In mandrel；One end of the second interlude anchor cable is fixed on the 3rd column, it bypasses the fixed pulley and the 3rd successively
Movable pulley is set, and the other end is fixedly mounted on the central shaft of the second movable pulley；One end of the 3rd interlude anchor cable is consolidated
It is scheduled on the 4th column, it is set around the fixed pulley and the 4th movable pulley successively, and the other end is fixedly mounted on the 4th dynamic cunning
On the central shaft of wheel；One end of the latter end anchor cable is fixed on the central shaft of the 4th movable pulley, the other end is fixedly mounted on
On the AC-14 types anchor.
The present invention changes the direction of stress using pulley assembly, and because province's force characteristic of pulley assembly, hoist engine only need
It is placed at the top of pile body and only needs to apply and be much smaller than pile body actual loading load, you can meets the needs of horizontal addload.Using volume
Raise machine force and pulling force is provided, the direction of hoist engine offer power is provided jointly using pulley assembly and AC-14 types anchor, is super large single pile
Basis provides the self-reaction force of horizontal direction；The present invention can realize in-site installation and dismounting, simple to operate, reusable, save
The cost for making counter-force stake, fixed counterforce device or ballast platform transport has been gone, has greatly reduced input cost；Therefore, this hair
It is bright that there is good market application foreground.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is non-limiting, reference only to preferred embodiment to this hair
It is bright to be described in detail.It will be understood by those within the art that technical scheme can be modified
Or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, all should cover in scope of the presently claimed invention
It is interior.
Claims (9)
1. the horizontal static load device of super-large diameter single-pile foundation, it is characterised in that
Including tensile machine (20), grip mechanism (30), pulley assembly and multistage anchor cable (50),
The tensile machine (20) is arranged on pile body (10),
The grip mechanism (30) is arranged on the outside of the pile body (10),
The anchor cable (50) includes first section anchor cable, interlude anchor cable and latter end anchor cable,
One end of the first section anchor cable is fixedly connected with the tensile machine (20), and the other end is fixed with the pulley assembly to be connected
Connect；
One end of the latter end anchor cable is fixedly connected with the pulley assembly, the other end and the fixed company of the grip mechanism (30)
Connect；
The interlude anchor cable is set around the pulley assembly.
2. the horizontal static load device of super-large diameter single-pile foundation according to claim 1, it is characterised in that the pulley assembly
Including fixed pulley (12), at least one column (11) and at least one movable pulley (40),
The fixed pulley (12) and the column (11) are fixedly mounted on the pile body (10)；
The movable pulley (40) is arranged on the outside of the pile body (10)；
Described first section anchor cable one end is fixedly mounted in the tensile machine (20), and the other end is fixedly mounted on the column (11)
On, intermediate portion winds the fixed pulley (12) and the movable pulley (40) is set；
One end of the latter end anchor cable is fixed on the central shaft of last movable pulley (40), and the other end is fixedly mounted on described
In grip mechanism (30)；
The interlude anchor cable winds the fixed pulley (12) and the movable pulley (40) is set, wherein, the interlude anchor cable
One end be fixed on the column (11), its successively around the fixed pulley (12) and the movable pulley (40) setting, the other end
It is fixedly mounted on the central shaft of a movable pulley (40).
3. the horizontal static load device of super-large diameter single-pile foundation according to claim 2, it is characterised in that the column (11)
It is identical with the setting quantity of the movable pulley (40).
4. the horizontal static load device of super-large diameter single-pile foundation according to Claims 2 or 3, it is characterised in that the centre
One fewer than the setting quantity of the column (11) or the movable pulley (40) of the setting quantity of section anchor cable.
5. the horizontal static load device of super-large diameter single-pile foundation according to claim 1, it is characterised in that the pile body (10)
On be additionally provided with strengthen steel construction job platform (13).
6. the horizontal static load device of super-large diameter single-pile foundation according to claim 1, it is characterised in that the tensile machine
(20) it is hoist engine.
7. the horizontal static load device of super-large diameter single-pile foundation according to claim 1, it is characterised in that the grip mechanism
(30) it is high holding power anchor.
8. the test method based on the horizontal static load device of super-large diameter single-pile foundation as claimed in claim 1, it is characterised in that
Comprise the following steps,
S1：Tensile machine (20) is set on the pile body (10)；
S2：In the pile body (10), grip mechanism (30) is set outside；
S3：Pulley assembly is set, one end of the first section anchor cable is fixedly connected with the tensile machine (20), the other end and institute
Pulley assembly is stated to be fixedly connected；The interlude anchor cable is set around the pulley assembly；By one end of the latter end anchor cable
It is fixedly connected with the pulley assembly, the other end is fixedly connected with the grip mechanism (30).
9. super-large diameter single-pile foundation horizontally loading test method according to claim 8, it is characterised in that step S3
In,
Described first section anchor cable one end is fixedly mounted in the tensile machine (20), intermediate portion winds the fixed pulley
(12) set with the movable pulley (40), the other end is fixedly mounted on the column (11)；
The interlude anchor cable is wound into the fixed pulley (12) and the movable pulley (40) is set, wherein, the interlude anchor
One end of rope is fixed on the column (11), and it is set around the fixed pulley (12) and the movable pulley (40) successively, separately
One end is fixedly mounted on the central shaft of a movable pulley (40)；
One end of the latter end anchor cable is fixed on the central shaft of last movable pulley (40), the other end is fixedly mounted on institute
State in grip mechanism (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195550.3A CN107794957B (en) | 2017-11-24 | 2017-11-24 | Super-large-diameter single pile foundation horizontal static load device and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195550.3A CN107794957B (en) | 2017-11-24 | 2017-11-24 | Super-large-diameter single pile foundation horizontal static load device and test method |
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| Publication Number | Publication Date |
|---|---|
| CN107794957A true CN107794957A (en) | 2018-03-13 |
| CN107794957B CN107794957B (en) | 2023-06-20 |
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ID=61536569
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| CN201711195550.3A Active CN107794957B (en) | 2017-11-24 | 2017-11-24 | Super-large-diameter single pile foundation horizontal static load device and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878087A (en) * | 2020-07-30 | 2020-11-03 | 中铁五局集团有限公司 | Karst cave section anchor cable construction method based on karst cave underground river environment tunnel construction |
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| CN104674793A (en) * | 2015-02-14 | 2015-06-03 | 王运举 | Light-grab piling device for deep-foundation well |
| CN207499009U (en) * | 2017-11-24 | 2018-06-15 | 中交上海港湾工程设计研究院有限公司 | The horizontal static load device of super-large diameter single-pile foundation |
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2017
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| CN103046585A (en) * | 2013-01-28 | 2013-04-17 | 中国水电顾问集团西北勘测设计研究院 | Method for testing horizontal force bearing capacity static load of foundation single pile of wind power plant fan |
| CN203361209U (en) * | 2013-01-28 | 2013-12-25 | 中国水电顾问集团西北勘测设计研究院 | Single-pile horizontal bearing capacity static-load testing device for wind farm fan foundation |
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| CN111878087A (en) * | 2020-07-30 | 2020-11-03 | 中铁五局集团有限公司 | Karst cave section anchor cable construction method based on karst cave underground river environment tunnel construction |
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| CN107794957B (en) | 2023-06-20 |
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