CN101899827B - Broken soil vibration and compaction treatment method by utilizing impact hammer in immersed tube in riprap filled foundation - Google Patents

Broken soil vibration and compaction treatment method by utilizing impact hammer in immersed tube in riprap filled foundation Download PDF

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Publication number
CN101899827B
CN101899827B CN200910099163.9A CN200910099163A CN101899827B CN 101899827 B CN101899827 B CN 101899827B CN 200910099163 A CN200910099163 A CN 200910099163A CN 101899827 B CN101899827 B CN 101899827B
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immersed tube
pipe
foundation
pile
vibration
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CN200910099163.9A
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Chinese (zh)
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CN101899827A (en
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严平
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严平
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Abstract

The invention relates to a method for carrying out shallow and deep foundation treatment on a common riprap filled foundation in the civil engineering. The method comprises the following steps of: when an immersed tube can not be vibrated and impacted while meeting broken stones, such as dimension stones, and the like in the foundation, starting a freely-falling body impact hammer in the immersed tube to carry out impacting and crushing on the dimension stones by utilizing a newly-developed broken soil vibrating pile squeezer-expander with the impact hammer in the immersed tube as well as special structures of the tube head, and simultaneously carrying out crushing and squeezing-expanding on the dimension stones by combining the vibration and the impact of a vibration hammer of the immersed tube; if necessary, filling concrete, broken stones, sands, slag, and the like in the immersed tube, and carrying out impacting, squeezing-expanding and compaction treatment on the shallow layer and the deep layer of the filled foundation. In the method, the reinforcing treatment, such as grouting, and the like can be carried out in the tube immersing process according to requirements; an engineering pile can be directly constructed on the foundation that needs subjacent bed filling treatment; and a soft subjacent layer can also be reinforced by adopting a high pressure grouting or jet grouting pile so as to satisfy various engineering requirements to the foundation.

Description

Jump bit broken soil vibration compaction method in immersed tube in riprap filled ground

Technical field

The present invention relates to a kind of for riprap filled ground treatment technology---jump bit broken soil vibration ground compaction processing method in immersed tube.This technology is filled out the processing of the riprap filled ground of ditch, hill excavating and offshore filling (lake, river) formation mainly for cutting into a mountain, when transforming the object of construction production such as bridge, water conservancy, municipal pipeline and industry and civilian construction on this type of ground, provide a kind of processing method of ground.

Background technology

In as civil engineering constructions such as road and bridge engineering, hydraulic engineering, municipal pipeline engineering, Industrial and Civil Engineering, often cut into a mountain as required and fill out ditch, hill excavating and offshore filling, fill out lake and fill out river construction, formed thus this class riprap filled ground.The feature of this riprap filled ground is:

1, fill stratum is comprised of the very inhomogeneous stone riprap of granular size, and the size of particle is very inhomogeneous, and the large diameter that has surpasses the megalith of 1~2m;

2, the arrangement skeleton of fill stratum particle is very inhomogeneous, exists very large space and unstability, easily produces particle and rearrange and produce local subsiding under external force;

3, the thickness of fill stratum and buried depth and distribution are very inhomogeneous, and thin shallow place is that basement rock exposes, and thick place can reach tens meters;

4, under fill stratum, often have soft substratum, especially fill out sea, lake engineering, ground is also in sinking state under fill stratum effect, and distortion reaches far away stable.

Because particle and the distributed pole of this class riprap filled ground are inhomogeneous, existing various stake types almost cannot pass through pile, and unique percussive grabbing boring stake also exists, pile is difficult, speed of application is slow, high cost shortcoming.In addition process this class and banket that to process degree of depth limited due to it for existing dynamic compaction and grouting, and cannot solve intensity, distortion and the stable problem of soft substratum and restricted.Therefore how to handle this class riprap filled ground well, the difficult problem that all kinds of civil engineering projects of construction that make safety on this class ground are current geotechnical engineerings circle.

Summary of the invention

The present invention is directed to riprap filled ground common in civil engineering, develop and a kind ofly can carry out the technology that shallow-layer and deep foundation are processed to it, this method for processing foundation is the interior band of the immersed tube jump bit broken soil vibration extruded and extended pile machine of exploitation, adopt the broken soil of jump bit to vibrate squeezed and second-time breakage method in conjunction with immersed tube head, can according to requirement of engineering, carry out deep layer and the compacted displacement ground processing of shallow-layer to riprap filled ground, also can pass through riprap fill stratum and enter design bearing stratum formation engineering pile, make to meet and on this type of ground, build the requirement of various civil engineering projects to foundation.

The squeezed immersed tube method for processing foundation of jump bit broken soil vibration in a kind of pipe, while using vibrator sunk pile machine consolidated subsoil, utilize the impact grinding of jump bit in pipe and the squeezed compacted effect that jump bit drives immersed tube to sink, start vibrating hammer simultaneously and make the downward shock and vibration of immersed tube, reach the reinforcing object to riprap fill stratum shallow-layer and deep layer;

On vibrator sunk pile machine, be equipped with vibrating hammer and can pass through vibrating hammer and enter the jump bit in pipe; Jump bit is for straightening footpath step cylinder, and the inside of immersed tube head has hammering tube wall to drive the protruding margo of pipe sinking, and immersed tube head has the immersed tube of convex outer curve shape to impact and vibrate squeezed head outward.

In the immersed tube process of facility, in immersed tube, pour into rubble, sand or slag, utilize the effect of ramming of hammer in pipe to carry out compacted filling to soil layer, after vibration pipe-drawing, form flexible pile composite foundation.

In the immersed tube process of facility, in immersed tube, pour into dry and hard concrete, utilize the effect of ramming of hammer in pipe to carry out compacted filling to soil layer, immersed tube, after design elevation, pours into concrete, forms rigid pile composite foundation after vibration pipe-drawing.

In the immersed tube process of facility, in pipe, fill with sand bath, the space of riprap fill stratum is squeezed and filled out, and carry out cement grouting operation, riprap fill stratum is carried out to the grout and strengthen processing of shallow-layer and deep layer.

In the immersed tube process of facility, pass through fill stratum, enter the bearing stratum of designing requirement, put into reinforcing cage, pour into concrete, vibration pipe-drawing forms engineering pile, as the pile foundation that is built in object of construction production on this class filled ground; Or in immersed tube, pour into dry and hard concrete, and utilize the immersed tube of ramming of hammer in pipe to enter bearing stratum and expand pile crown, pull into the rigid pile that expands head into band on after then putting into reinforcing cage and pouring into concrete.

Immersed tube at facility passes through after riprap fill stratum, soft substratum under fill stratum is carried out to slip casing by pressure and rotary churning pile reinforcing, then in immersed tube, pour into rubble, sand or slag, utilize the effect of ramming of hammer in pipe to carry out compacted filling to soil layer, after vibration pipe-drawing, form flexible pile composite foundation; Also can in immersed tube, pour into as required dry and hard concrete, utilize the effect of ramming of hammer in pipe to carry out compacted filling to soil layer, immersed tube, after design elevation, pours into concrete, forms rigid pile composite foundation after vibration pipe-drawing; Can also in pipe, fill with sand bath, the space of riprap fill stratum be squeezed and filled out, and carry out cement grouting effect, riprap fill stratum be carried out to the grout and strengthen processing of shallow-layer and deep layer, form compound foundation;

Or pour into sandstone put into churning pipe in pile pipe after, after soft sleeper layer rotary jet strengthening processed, the churning of immersed tube limit is pulled out to ground in limit, forms the reinforced composite ground of omnidistance rotary churning pile.

The present invention solves the technical scheme that its technical problem adopts

The technical scheme that the present invention solves its technical problem employing is the interior band of the immersed tube jump bit broken soil vibration extruded and extended pile machine of exploitation, utilize the special tectonic of tube head, when in meeting ground, the obstacle such as boulder cannot vibratory impulse immersed tube, in startup pipe, freely falling body jump bit carries out impact grinding to piece stone, again piece stone is carried out to fragmentation and squeezed in conjunction with the vibration of immersed tube vibrating hammer with impact simultaneously; In immersed tube, insert if desired concrete, rubble, sand, slag etc., to the shallow-layer of filled ground and deep layer impact, squeezed and compaction.The consolidation process such as also can be in the milk in immersed tube process as required; The ground that the substratum that will banket is processed, directly construction works stake, to meet the requirement of various engineerings to ground.

Accompanying drawing explanation

Accompanying drawing 1: the structure sketch of immersed tube vibrating hammer and jump bit and squeezed head;

Accompanying drawing 2: the broken native squeezed ground compaction handling principle signal of immersed tube;

Accompanying drawing 3: the flexible pile of riprap fill stratum shallow-layer and deep layer is processed schematic diagram;

Accompanying drawing 4: the rigid pile of riprap fill stratum shallow-layer and deep layer is processed schematic diagram;

Accompanying drawing 5: the high-pressure slip-casting of riprap fill stratum shallow-layer and deep layer is processed schematic diagram;

Accompanying drawing 6: through the rigid pile foundation of riprap fill stratum;

Accompanying drawing 7: through riprap fill stratum, soft substratum is carried out the composite foundation of high-pressure slip-casting or rotary churning pile reinforcing formation.

In figure: 1---stake immersed tube; 2---the squeezed head of immersed tube; 3---jump bit in pipe; 4---immersed tube vibrating hammer; 5---squeezed the broken alloy of side direction protrudes cutter head; 6---impact tup alloy crushing cutter head; 7---the broken alloy cutter head of immersed tube head.

The specific embodiment

According to the thickness of riprap fill stratum, the banket soil nature of substratum, and be built in the requirement of civil engineering project to ground on this class ground, to the processing of this type of riprap filled ground, can be divided into two parts of processing to soft substratum under the processing of fill stratum itself and fill stratum.Requirement according to the engineering of building to this class riprap filled ground, the inventive method can have following embodiment to the processing of this type of fill stratum:

1, by the latticed layout in stake position, adopt the squeezed compacted effect of hammering blow vibration sinking tube in pipe, make to huddle piece clitter stack structure and misplace compacted.Wherein in pipe, the impact of hammer is played broken boulder and pipe is sunk and to the compacted effect of ramming of ground, vibrating hammer drives vibration and the impact of immersed tube to play the squeezed and compacted effect of piece stone second-time breakage, so combines and can carry out to this type of fill stratum the compaction of shallow-layer and deep layer;

2, in above-mentioned " 1 " sinking tube compacted effect, in immersed tube, drop into rubble, sand or slag etc., utilize ramming of hammer in pipe to squeeze to fill stratum the effect of filling out, after vibration pipe-drawing, form the flexible pile composite foundations such as broken stone pile, sand pile or slag stake:

3, in above-mentioned " 1 " sinking tube compacted effect, first drop into dry and hard concrete in immersed tube, in same utilization pipe, ramming of hammer squeezed and filled out fill stratum.Immersed tube pulls out formation rigid pile composite foundation to pouring into after design elevation in concrete (can put into reinforcing cage if desired) vibration;

4, in above-mentioned " 1 " sinking tube compacted effect, in pipe, fill with sand bath, riprap space is squeezed and filled out, and can carry out as required cement grouting operation, random Stone-filled Ground is carried out to grout and strengthen processing.

Above-mentionedly to the reinforcement depth of riprap fill stratum and reinforcement degree, can to the requirement of ground, consider employing according to object of construction production.Fill stratum is existed below to the state of soft substratum, the requirement according to object of construction production to ground, can adopt following processing method:

1, adopt the squeezed immersed tube of hammering blow broken soil vibration in pipe to pass after fill stratum, directly vibration sinking tube enters bearing stratum, puts into reinforcing cage, pours into concrete, pulls out rear formation engineering pile in vibration, as the pile foundation of building object of construction production.Through after fill stratum, also can in pipe, pour into dry and hard concrete, in utilization pipe, hammer is rammed and is driven immersed tube to enter bearing stratum, and rams expansion pile crown, then puts reinforcing cage, and after filling concrete, tube drawing forms the pile foundation that band expands head, and pile capacity is significantly improved;

2, can by above-mentioned " 1 " requirement pile, make these stakes play control settlement action by designing requirement part immersed tube through fill stratum, form with the fill stratum of processed mistake the composite foundation that sliding bed is controlled sedimentation, meet the requirement of object of construction production to ground;

3, immersed tube, through after fill stratum, can carry out high-pressure slip-casting and rotary churning pile reinforcing to soft substratum, to meet the requirement of object of construction production to ground, then pours into rubble, sand, slag or concrete or fills with sand cement injection tube drawing form compound foundation; Also after can putting into churning pipe in pile pipe, pour into sandstone, after soft sleeper layer rotary jet strengthening processed, the churning of immersed tube limit is pulled out to ground in limit, forms the reinforced composite ground of omnidistance rotary churning pile.

Except above-mentioned embodiment, the present invention can also have other embodiment, and all employings are equal to the technical scheme of replacement or equivalents, all drop on the claimed scope of the present invention.

Claims (6)

1. the squeezed immersed tube method for processing foundation of jump bit broken soil vibration in a pipe, it is characterized in that: while using vibrator sunk pile machine consolidated subsoil, utilize the impact grinding of jump bit in pipe and the squeezed compacted effect that jump bit drives immersed tube to sink, start vibrating hammer simultaneously and make the downward shock and vibration of immersed tube, reach the reinforcing object to riprap fill stratum shallow-layer and deep layer;
On described vibrator sunk pile machine, be equipped with vibrating hammer and can pass through vibrating hammer and enter the jump bit in pipe; Jump bit is for straightening footpath step cylinder, and the inside of immersed tube head has hammering tube wall to drive the protruding margo of pipe sinking, and immersed tube head has the immersed tube of convex outer curve shape to impact and vibrate squeezed head outward.
2. the squeezed immersed tube method for processing foundation of jump bit broken soil vibration in pipe according to claim 1, it is characterized in that: in the immersed tube process of claim 1 facility, in immersed tube, pour into rubble, sand or slag, utilize the effect of ramming of hammer in pipe to carry out compacted filling to soil layer, after vibration pipe-drawing, form flexible pile composite foundation.
3. the squeezed immersed tube method for processing foundation of jump bit broken soil vibration in pipe according to claim 1, it is characterized in that: in the immersed tube process of claim 1 facility, in immersed tube, pour into dry and hard concrete, utilize the effect of ramming of hammer in pipe to carry out compacted filling to soil layer, immersed tube is after design elevation, pour into concrete, after vibration pipe-drawing, form rigid pile composite foundation.
4. the squeezed immersed tube method for processing foundation of jump bit broken soil vibration in pipe according to claim 1, it is characterized in that: in the immersed tube process of claim 1 facility, in pipe, fill with sand bath, the space of riprap fill stratum is squeezed and filled out, and carry out cement grouting operation, riprap fill stratum is carried out to the grout and strengthen processing of shallow-layer and deep layer.
5. the squeezed immersed tube method for processing foundation of jump bit broken soil vibration in pipe according to claim 1, it is characterized in that: in the immersed tube process of claim 1 facility, pass through fill stratum, enter the bearing stratum of designing requirement, put into reinforcing cage, pour into concrete, vibration pipe-drawing forms engineering pile, as the pile foundation that is built in object of construction production on this class filled ground; Or in immersed tube, pour into dry and hard concrete, and utilize the immersed tube of ramming of hammer in pipe to enter bearing stratum and expand pile crown, pull into the rigid pile that expands head into band on after then putting into reinforcing cage and pouring into concrete.
6. the squeezed immersed tube method for processing foundation of jump bit broken soil vibration in pipe according to claim 1, it is characterized in that: the immersed tube at claim 1 facility passes through after riprap fill stratum, soft substratum under fill stratum is carried out to slip casing by pressure and rotary churning pile and reinforce, then by claim 2,3 or 4 method tube drawing form compound foundation; Or pour into sandstone put into churning pipe in pile pipe after, after soft sleeper layer rotary jet strengthening processed, the churning of immersed tube limit is pulled out to ground in limit, forms the reinforced composite ground of omnidistance rotary churning pile.
CN200910099163.9A 2009-06-01 2009-06-01 Broken soil vibration and compaction treatment method by utilizing impact hammer in immersed tube in riprap filled foundation CN101899827B (en)

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CN103321203B (en) * 2013-07-03 2016-05-04 李华伟 Taper hammer ram brute force develops a method
CN105239567B (en) * 2015-10-26 2017-01-25 高佰明 Stirring pile driver with local vibration and high-pressure injection functions

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CN1099448A (en) * 1993-09-12 1995-03-01 黎应因 Construction method for basic pile
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Publication number Priority date Publication date Assignee Title
GB1039645A (en) * 1964-04-13 1966-08-17 Albert George Bodine Method and apparatus for creating a load bearing region in earthen material
CN1099448A (en) * 1993-09-12 1995-03-01 黎应因 Construction method for basic pile
CN1898445A (en) * 2003-10-23 2007-01-17 土工技术强化公司 Apparatus and method for building support piers from one or successive lifts formed in a soil matrix
WO2005090689A1 (en) * 2004-03-20 2005-09-29 Ext Co., Ltd. Pile with an extended head and working method of the same
WO2007090566A1 (en) * 2006-02-03 2007-08-16 Vibroflotation, B.V. Vibrator arrangement and method of producing material columns in the ground
CN101058111A (en) * 2007-05-11 2007-10-24 张立新 Dropping grabbing tamping hammer

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Address after: The ancient Pier Road Hangzhou city Zhejiang province 310000 No. 673 Xihu District Ruibo International Building, B block 16 layer

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