CN1223322A - Construction method of in-situ pouring concrete pile and adopted construction equipment - Google Patents
Construction method of in-situ pouring concrete pile and adopted construction equipment Download PDFInfo
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- CN1223322A CN1223322A CN 99100566 CN99100566A CN1223322A CN 1223322 A CN1223322 A CN 1223322A CN 99100566 CN99100566 CN 99100566 CN 99100566 A CN99100566 A CN 99100566A CN 1223322 A CN1223322 A CN 1223322A
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Abstract
The construction method for in-situ filled concrete pile includes the following steps: placing a vertical protective tube for guide on the ground surface where the pile position is defined, under the guidance of the protective tube, using ramming hammer to make repeated primary impact on the bottom end soil of the protective tube along said tube vertically; lifting the ramming hammer upwards, before said ramming hammr is fallen down, pressing the protective tube down, then falling the hammer down again to impact the bottom end soil in the protective tube; repeatedly making the above-mentioned operations of lifting hammer, pressing protective tube downwards, falling hammer and impacting bottom end soil, until the protective tube is reached to the defined depth; filling the bottom end of the protective tube with ramming material; ramming to form expanded tip; forming pile body and then lifting out protective tube.
Description
The present invention relates to field of civil engineering, particularly the job practices of foundation pile and equipment.
In the foundation construction of building, usually adopt cast-in-place concrete pile, a kind of form of construction work of this stake is to adopt casing and elongated hammer construct (being the patent of invention manual of CN1153847A referring to notification number), promptly form tamper diffusion head at the stake end by this elongated hammer, perfusion pile concrete when promoting casing, thereby form whole cast-in-place concrete pile, before forming the concrete pile body, at first be that casing is sunk to prescribed depth, thereby form the stake hole.At present along with City Building develops on a large scale towards height, to foundation pile requirement for bearing capacity more and more higher, so just need to form at the scene and have larger-diameter cast-in-place concrete pile, and then must adopt larger-diameter casing, when the prescribed depth that this casing sunk in the ground, can run into the bigger situation of the suffered frictional force of casing, thereby be difficult to it is sunk to prescribed depth, or propose from assigned position.In addition, above-mentioned prior art is filled compacting by the limit and is expected that the limit sinks casing by the inner soil body of hammering blow casing, thereby speed of application is slower.
The object of the present invention is to provide a kind of job practices of in-site pouring concrete pile, its can be fast with the casing sinking in the required ground degree of depth, but the larger-diameter casing of sinking in addition, thereby satisfy the construction needs of larger-diameter concrete pile.
Above-mentioned purpose of the present invention is to realize that by the job practices that following bottom has an in-site pouring concrete pile of enlarged footing this method comprises the steps:
A) casing is vertically stood on the foundation surface of regulation stake position;
B) by above-mentioned casing guiding, make hammer ram along vertically repeatedly the casing bottom soil body tentatively being impacted, until specified degree in the mode of mentioning the back let-down earlier;
C) above-mentioned hammer ram is promoted, before the let-down hammer ram, above-mentioned casing is pressed to prescribed depth;
D) once more by above-mentioned casing guiding, the let-down hammer ram impacts hammer ram downwards to the casing inside soil body, thereby reduces or the internal friction when eliminating the casing sinking;
E) carry out above-mentioned steps c repeatedly) and d), until above-mentioned casing is set to prescribed depth;
F) by casing, fill the compacting material to its bottom, its compacting to required degree, is formed enlarged footing;
G) form the concrete pile body, propose casing.
Method according to the invention described above, because the step that before the let-down hammer ram, has adopted casing to press down, the sinking of casing is actually by pressing down and impacts with hammer ram that the inner soil body of casing realizes like this, thereby can accelerate the speed that casing sinks, improved work efficiency, needn't when casing sinks, fill the compacting material, make that construction is convenient, quick, civilized.
In said method, in above-mentioned steps c, in the lifting process of this hammer ram, when the bottom of above-mentioned hammer ram is promoted to the bottom surface of casing, above-mentioned casing is pressed to prescribed depth;
Owing to adopted the step that when hammer ram rises, presses down casing, can shorten the sinking time of casing so more.
In said method, in above-mentioned steps c, comprise following operation:
1) in the lifting process of this hammer ram, casing is rotated so that reduce the frictional force of the soil body to the casing external surface;
2) before the let-down hammer ram, above-mentioned casing is pressed to prescribed depth.
According to the method described above, owing to being pressed down, hammer ram impact, casing rotation and casing combine, reduce the frictional force of the soil body by the casing rotation like this to the casing external surface, impact the soil body of casing inside by hammer ram, it is dashed pound out outside, casing bottom, can reduce the frictional force of casing inwall like this, by casing being pressed down the mode that replaces filler limit, limit to ram, thereby accelerated construction progress, make casing sink down into desired location in the ground fast, thereby can sink bigger casing, promptly carry out the construction of larger-diameter concrete pile.
In said method, aforesaid operations 1) action and aforesaid operations 2 in to the casing rotation) in the pressing action of casing hocket.
In said method, carry out aforesaid operations 1 earlier) in the action to casing rotation, carry out aforesaid operations 2 afterwards) in the pressing action of casing.
The pressing action of the casing in said method, advanced line operate 1) carries out above-mentioned steps 2 afterwards) in the action to the casing rotation.
In said method, the active force that presses down of above-mentioned casing is to come balance by the counter-force that anchor pole is set in ground provides.
According to the method described above, owing to adopt anchor pole that counter-force is provided, the downforce of casing increases like this, thereby can sink bigger casing, promptly carries out the construction of bigger concrete pile.
In said method, at above-mentioned steps g) in, insert the pile body reinforcing cage, pour into pile concrete afterwards.
In said method, above-mentioned steps f) be performed such:
1) by this casing to stake hole bottom gradation insert building waste, make hammer ram do elevating movement along this casing by vertical direction, the building waste of being inserted is carried out macro-energy to be rammed, this rams degree is to determine like this, when hammer ram produces bounce-back, the injection amount that test hammer ram continuous three hits under the situation of filler not, wherein previous injection amount greater than after once injection amount, or with after once injection amount maintain an equal level, and above-mentioned three total injection amounts are less than design load, this design load is according to surrounding soil is farthest tamped, but the mode that this surrounding soil is not damaged is determined again, receive the degree of depth that the hammer hour hammer goes out casing greater than 50cm, thereby forming the bottom of artificial bearing stratum in the casing bottom;
2) irritate to the gradation of stake hole bottom by this casing and fill out building waste and cement sand-lime, or the compound of harsh concrete, the amount of inserting always of this compound is at 0.3～1m
3Scope in, and the amount of inserting always less than above-mentioned building waste makes hammer ram do elevating movement by vertical direction along this casing, to irritate building waste and the cement sand-lime of filling out, or the compound of harsh concrete carries out macro-energy and rams, thereby forms the intermediate layer of artificial bearing stratum in the casing bottom;
3) pass through this casing to bottom, stake stake hole gradation perfusion harsh concrete, the amount of inserting always of this harsh concrete is at 0.3～1m
3Scope in, and less than above-mentioned building waste and cement sand-lime, or the amount of inserting always of the compound of harsh concrete, make hammer ram do elevating movement along this casing by vertical direction, the harsh concrete that is poured into is carried out macro-energy to be rammed, receiving the degree of depth that the hammer hour hammer goes out casing greater than 5cm, thereby forming the upper strata of artificial bearing stratum and finally constitute spherical artificial bearing stratum;
Carry out the construction of enlarged footing owing to adopt above-mentioned steps, make the compacting degree of compacted enlarged footing reach required degree like this, promptly farthest carry out compacted to surrounding soil and compacting material, transferring surrounding soil fully participates in stressed, unlikely again destruction of causing surrounding soil, thereby can form more shallow artificial bearing stratum at the ground shallow place, increase the bearing capacity of concrete pile greatly, and made the cost of building reduce greatly.
Another object of the present invention is to provide a kind of and realize that above-mentioned bottom has the construction equipment of job practices of the in-site pouring concrete pile of enlarged footing, this equipment can make said method finish quickly and easily.
Above-mentioned another purpose of the present invention is to realize by the construction equipment of job practices that the above-mentioned bottom of the realization of following structure has an in-site pouring concrete pile of enlarged footing, this equipment comprises hammer ram and casing, it is characterized in that this equipment comprises the chassis, this chassis front end is provided with framework along perpendicular direction, this framework is supported on the chassis by the inclination support unit, on the chassis, be fixed with and put the formula main winch soon, top at framework is provided with pulley mechanism, walk around above-mentioned pulley mechanism and suspend above-mentioned hammer ram in midair from the rope that above-mentioned main winch stretches out, this equipment also comprises the casing hold-down devices.
If adopt the construction equipment of said structure, owing to be provided with the casing hold-down devices, hammer ram is impacted to press down like this combining with casing, can apace the casing sinking be arrived the required ground degree of depth, shortened the construction period of concrete pile.
In above-mentioned construction equipment, above-mentioned casing hold-down devices comprises that the casing that is arranged at front portion, above-mentioned chassis promotes with the secondary hoist engine that presses down usefulness, is fixed in pulley on the above-mentioned chassis, is fixed in the pulley on framework top, pulley on the pulley that the rope that stretches out from above-mentioned secondary hoist engine is walked around the said frame top successively and the chassis and being connected with the lanyard portion that forms in the top of above-mentioned casing outer rim, thus can realize pressing down of casing.
According to above-mentioned construction equipment, because the secondary hoist engine that allows the suspention casing use also has the function that presses down casing, make full use of each parts, device in the equipment like this, transfer its potentiality, reduced the cost of construction equipment.
In above-mentioned construction equipment, walk around the said frame top pulley rope by suspension hook with walk around the chassis on pulley and the rope that is connected with lanyard portion on the casing connects so that directly hook the suspension ring of casing top ends or coupled rope by above-mentioned suspension hook when carrying out the suspention of casing not carrying out the pressing action of casing and promoting action.
According to said structure, because the rope that stretches out from secondary hoist engine is connected by the rope that suspension hook and casing press down usefulness, like this when not carrying out the casing pressing action, the rope that above-mentioned suspension hook and the suspension ring or the suspention casing of casing are used can be connected, thereby made things convenient for constructing operation, simplified device structure.
In above-mentioned construction equipment, above-mentioned casing hold-down devices comprises force bearing plate, and following force bearing plate is arranged at the driving cylinder between the force bearing plate and following force bearing plate on this, above-mentioned casing passes from the pars intermedia of casing hold-down devices, and this pars intermedia is provided with along the mechanism of horizontal clamping casing.
In above-mentioned construction equipment, the front portion on above-mentioned chassis, along said frame can be provided with recovery type displaced spirals anchor pole device along the mode of vertical slip.
Construction equipment according to said structure, owing to be provided with recovery type displaced spirals anchor pole device, when construction, it can be screwed in the ground like this, itself and equipment is anterior fixing, counter-force is provided, avoid because of weight of equipment gently cause equipment on lift, can carry out the construction of larger-diameter stake, when construction finishes, can reclaim this anchor pole in addition fast on equipment, thereby easily, the construction of also having saved every pile all sets the expense of anchoring pile separately, has saved whole construction cost.
In above-mentioned construction equipment, said frame is a portal framed structure, it comprises two vertical supports, these two vertical supports tops are provided with crossbeam, above-mentioned inclination support unit is the inclination cramp bar, the one end is connected with the chassis, and its other end down is connected with this vertical supports a distance on the top from above-mentioned vertical supports.
In above-mentioned construction equipment, be vertically arranged with guide rail in the inboard of above-mentioned two vertical supports, be fixed with the casing centralizer on the external surface of the close above-mentioned guide rail in casing respectively, this casing centralizer includes the roller that can roll on above-mentioned guide rail.
According to the construction equipment of said structure, owing to adopted the casing centralizer that leads by framework, can avoid the crooked of casing like this, improved the construction quality of stake, also saved many correction operations that bring because of casing is crooked in addition, simplified constructing operation greatly.
In above-mentioned construction equipment, above-mentioned vertical supports is a truss structure, and it comprises 3 vertical poles that are triangularly arranged and connects cross bar between them.
According to the construction equipment of said structure, can increase the stability of framework, intensity is higher.
In above-mentioned construction equipment, said frame comprises two vertical supports, these two vertical supports tops are provided with crossbeam, above-mentioned inclination support unit is the inclination girder truss, one end and chassis are hinged, its other end and above-mentioned crossbeam are hinged, and above-mentioned vertical supports is telescopic, the thin bar that it comprises thick hollow stem and can insert this hollow stem inside.
In above-mentioned construction equipment, this equipment also comprises the casing whirligig.
According to the construction equipment of said structure, owing to adopt the casing whirligig, the impact with the pressing down of casing, rotation, hammer ram combines like this, can overcome the inside and outside frictional force of bigger casing, thereby can carry out the construction of the concrete pile of larger diameter.
In above-mentioned construction equipment, this casing whirligig is the clipping whirligig of casing that is arranged at the front portion of this main support, the clipping whirligig of this casing by the lifting driving cylinder below being positioned at it, can be supported on ground reaction plate and be connected.
In above-mentioned construction equipment, the clipping whirligig of above-mentioned casing comprises two casing clamping limbs that at one end are hinged, thereby by the driving cylinder connection two casing clamping limbs are tightly clamped casing between the other end of these two casing clamping limbs, be provided with at the relative side of above-mentioned two casing clamping limbs and be connected with a driving cylinder respectively, these two driving cylinders are hinged with above-mentioned chassis respectively.
In above-mentioned construction equipment, the clipping whirligig of above-mentioned casing comprises two casing clamping limbs that at one end are hinged, thereby by the driving cylinder connection two casing clamping limbs are tightly clamped casing between the other end of these two casing clamping limbs, be provided with at the relative side of above-mentioned two casing clamping limbs and be connected with a driving cylinder respectively, these two driving cylinders are connected with the main frame of above-mentioned casing clamping device respectively, their mutual keeping parallelisms, but extend in opposite direction, this main frame is connected with the chassis.
In above-mentioned construction equipment, the front end on above-mentioned chassis is supported on the above-mentioned reaction plate by driving cylinder.
In above-mentioned construction equipment, this equipment is provided with leveler.
According to the equipment of said structure, owing to be provided with leveler, can exactly equipment chassis be adjusted to horizontal level like this, thereby can guarantee the verticality of casing, guarantee the construction quality of stake, also simplified the operation of equipment leveling in addition.
Fig. 3 is the schematic diagram of the casing suspention hold-down devices in the equipment shown in Figure 1;
Fig. 4 is the elevation of the construction equipment of the in-site pouring concrete pile of the present invention the 2nd embodiment;
Fig. 5 is the anterior end surface figure of construction equipment shown in Figure 4;
Fig. 6 is the side view that thin portion amplifies in the construction equipment shown in Figure 4, the lift drive mechanism of its expression casing;
Fig. 7 is the vertical view of reaction plate shown in Figure 6;
Fig. 8 is the schematic diagram of an embodiment of the clipping whirligig of casing in the construction equipment of in-site pouring concrete pile shown in Figure 6;
Fig. 9 is the schematic diagram of another embodiment of the clipping whirligig of casing in the construction equipment of in-site pouring concrete pile shown in Figure 4;
Figure 10 is the elevation of the construction equipment of the in-site pouring concrete pile of the present invention the 3rd embodiment.
As illustrated in fig. 1 and 2, construction equipment as the in-site pouring concrete pile of the present invention the 1st embodiment comprises chassis 7, this chassis 7 is anterior along vertically being provided with framework B, the rear portion on chassis 7 is fixed with and puts formula main winch 3 soon in addition, these main winch 3 back are provided with electrical control cubicles 16 and ballast pouring weight 6, between framework B and chassis 7, be connected with inclination cramp bar 2, said frame B is the gate-type structure, the crossbeam 20 that it comprises two vertical supports 21 and is positioned at vertical supports 21 tops, vertical supports 21 is a truss-like, it comprises 3 of the vertical extension vertical poles that are triangularly arranged and is connected in stull (not shown) between them, on the pars intermedia end face of crossbeam 20, be fixed with head pulley 8, the wire rope 28 that stretches out from main winch 3 is walked around this head pulley 8 and is connected with hammer ram 9 end faces, the arranged outside on above-mentioned chassis 7 has a plurality of vertical support mechanism 14,7 bottom surfaces, chassis are provided with rotating disk 27, and this rotating disk 27 is supported on hydraulic moving mechanism system 5.On each above-mentioned vertical supports 21, move anchor pole device 34 being provided with recovery type along its mode that vertically moves, it comprises the rotating driver that is positioned at the top, such as motor 35, the axis of rotation bottom in this rotating driver 35 is connected with spiral anchor rod 36 tops.As shown in Figure 2, two side surfaces of the close vertical supports 21 in the casing 13 are fixed with casing centralizer 38, be provided with roller 39 in this casing centralizer 38, be provided with vertical guide 37 in the inboard of vertical supports 21, when above-mentioned casing 13 liftings, above-mentioned rollers 39 realizes rolling on above-mentioned guide rail 37.
As shown in figs. 1 and 3, this equipment comprises that also casing presses down suspension apparatus C, it comprises the secondary hoist engine 4 that is arranged at main winch 3 the place aheads, this pair hoist engine is fixed on the chassis 7, pars intermedia in crossbeam 20 bottom surfaces is fixed with auxiliary pulley 30, can walk around auxiliary pulley 30 from the wire rope 17 that secondary hoist engine 4 stretches out, and be connected with a suspension hook 29 downwards, this suspension hook 29 can be directly be connected with suspension ring 37 on the casing 13, or the wire rope that is connected on the above-mentioned suspension ring 37 connects (being used for suspention or decline casing 13), also can be connected with following wire rope 31, this wire rope 31 is walked around the pulley 32 that is fixed on the chassis 7 downwards, and is connected (being used for casing 9 is pressed down) with wire rope fixed part 33 on being formed at casing 13 external surfaces.
Below in conjunction with the equipment shown in Fig. 1 and 2, the job practices that bottom of the present invention is had the in-site pouring concrete pile of enlarged footing is described.
1. by secondary hoist engine 4 casing 13 is vertically stood on the stake position of foundation surface, hammer ram 9 is sling by main winch 3; By above-mentioned casing 13 guiding, make hammer ram 9 along vertically repeatedly the casing 13 bottom soil bodys tentatively being impacted in the mode of mentioning the back let-down earlier, until specified degree, form shallow bore hole, and the internal friction when tentatively reducing to press down casing;
2. above-mentioned hammer ram 9 is promoted, in the lifting process of this hammer ram, when the bottom of above-mentioned hammer ram 9 is promoted to the bottom surface (can confirm by the mark on the wire rope) of casing, start secondary hoist engine 4, tense wire rope 17, this wire rope 17 is by suspension hook 29 tense wire ropes 31, and this wire rope 31 is walked around pulley 32 and pulled the wire rope fixed part 33 that forms the casing top downwards, thereby above-mentioned casing 9 is pressed to prescribed depth;
3. once more by above-mentioned casing 13 guiding, let-down hammer ram 9 impacts hammer ram 9 downwards to the casing 13 inner soil bodys, thereby reduces or the internal friction when eliminating the casing sinking;
4. carry out above-mentioned steps 2 and 3 repeatedly, until above-mentioned casing 13 is set to prescribed depth;
5. by casing 13, fill the compacting material, its compacting to required degree, is formed the enlarged footing (not shown) to its bottom;
6. form the concrete pile body, propose casing.
Shown in Figure 4 and 5, construction equipment as the in-site pouring concrete pile of the present invention the 2nd embodiment comprises chassis 7, this chassis 7 is anterior along vertically being provided with framework B, the rear portion on chassis 7 is fixed with and puts formula main winch 3 soon in addition, these main winch 3 back are provided with electrical control cubicles 16 and ballast pouring weight 6, main winch 3 the place aheads are provided with wire rope suspensioning with secondary hoist engine 4, between framework B and chassis 7, be connected with inclination cramp bar 2, said frame B is the gate-type structure, the crossbeam 20 that it comprises two vertical supports 21 and is positioned at vertical supports 21 tops, vertical supports 21 is telescopic, it comprises the below, in this hollow stem 1 of hollow stem 1 that diameter is thicker and insertion, the bar 18 that diameter is thinner, be fixed with pulley mechanism 8 on the crossbeam 20, the wire rope 28 that stretches out from main winch 3 is walked around this pulley mechanism 8 and is connected with hammer ram 9 end faces, the wire rope 17 that stretches out on the secondary hoist engine 4 can pass through pulley 15, and pulley mechanism 8 is connected with casing 13, thereby casing 13 suspentions can be got up.The arranged outside on above-mentioned chassis 7 has a plurality of vertical support mechanism 14, and 7 bottom surfaces, chassis are provided with rotating disk 27, and this rotating disk 27 is supported on hydraulic moving mechanism system 5.
As shown in figure 10, as the construction equipment of the in-site pouring concrete pile of another embodiment of the present invention and Fig. 3 and shown in Figure 4 similar, difference is with the inclination cramp bar 2 among inclination truss semi girder 2 ' replacement Fig. 3, and top that should inclination truss semi girder 2 ' and the top of framework B are hinged, and its bottom and chassis 7 are hinged, be supported with rotating disk 27 below the chassis 7 in addition, this rotating disk 27 is supported on the sleeper 8.
Shown in Fig. 6 and 7, the front portion on the chassis 7 in construction equipment of the present invention is provided with the clipping whirligig A of casing, casing 13 passes from this device A, the clipping whirligig A of this casing is by a plurality of, be supported on the reaction plate 19 such as two lifting hydraulic drive cylinders 12, between the front portion on chassis 7 and reaction plate 19, can be provided with vertical before support hydraulic pressure driving cylinder 14 so that make body keep stablizing.
As shown in Figure 8, the clipping whirligig A of above-mentioned casing comprises two casing clamping limbs 22,22 ' that at one end are hinged, be provided with hydraulic drive cylinder 24 between two clamping limbs 22,22 ' the other end, thereby can realize casing 13 is clamped, be connected with hydraulic drive cylinder 23,23 ' respectively at two casing clamping limbs 22,22 ' relative side place, these two hydraulic drive cylinders 23,23 ' extend in opposite direction, and are connected with the main frame of the clipping whirligig A of not shown casing.When operation, at first casing 13 is clamped by hydraulic drive cylinder 24, two hydraulic drive cylinders 23,23 ' are driven, piston rod is stretched out, just can make the casing clamping limb with and interior casing 13 produce rotation, make the piston rod retraction in two hydraulic drive cylinders 23,23 ' afterwards more simultaneously, just make casing clamping limb and casing 13 to the commentaries on classics of circling round, carry out this action repeatedly, cooperate hammer ram 9 moving up and down simultaneously along casing 13, and the lifting action of hydraulic drive cylinder 12, but just overcome friction, with casing 13 fast heavy people to prescribed depth.
As shown in Figure 9, another embodiment as the clipping whirligig of casing, this device A comprises two casing clamping limbs 22 that at one end are hinged, 22 ', two clamping limbs 22, be provided with hydraulic drive cylinder 24 between 22 ' the other end, thereby can realize casing 13 is clamped, at two casing clamping limbs 22,22 ' opposite sides is connected with hydraulic drive cylinder 23 respectively, 23 ', these two hydraulic drive cylinders 23,23 ' the other end and chassis 7 are hinged, and these two hydraulic drive cylinders 23,23 ' along inclined direction, extend to a side, and the kernel of section line of casing clamping limb keeps symmetry relatively.When operation, at first casing 13 is clamped by hydraulic drive cylinder 24, piston rod in the hydraulic drive cylinder 23 is stretched out, make the piston rod retraction in the hydraulic drive cylinder 23 ' simultaneously, thereby make the casing clamping limb with and interior casing 13 produce rotation, afterwards, make the piston rod retraction in the hydraulic drive cylinder 23, piston rod in the hydraulic drive cylinder 23 ' is stretched out, thereby make the casing clamping limb with and interior casing 13 along counter-rotating, perseveration like this, casing 13 is swung back and forth, and cooperate the lifting action of driving cylinder 12 and the percussion of hammer ram 9, and just can overcome the inside and outside frictional force of casing, casing 13 is sunk to prescribed depth fast.
Below in conjunction with the equipment shown in Fig. 4 and 8, the job practices that bottom of the present invention is had the in-site pouring concrete pile of enlarged footing is described.
1. by secondary hoist engine 4 casing 13 is vertically stood on the stake position of foundation surface, hammer ram 9 is sling by main winch 3;
2. by above-mentioned casing 13 guiding, make hammer ram 9 along vertically repeatedly the casing 13 bottom soil bodys tentatively being impacted, until specified degree in the mode of mentioning the back let-down earlier;
3. above-mentioned hammer ram 9 is promoted, in the lifting process of this hammer ram 9, by the hydraulic drive cylinder 24 among the clipping whirligig A of above-mentioned casing, make casing clamping limb 22,22 ' clamps casing 13, piston rod in the hydraulic drive cylinder 23 is stretched out, make the piston rod retraction in the hydraulic drive cylinder 23 ' simultaneously, thereby make the casing clamping limb with and interior casing 13 produce rotation, afterwards, make the piston rod retraction in the hydraulic drive cylinder 23, the piston rod in the hydraulic drive cylinder 23 ' is stretched out, thereby make the casing clamping limb with and interior casing 13 along counter-rotating, perseveration just makes casing 13 swing back and forth like this, reduces the frictional force of the external surface of casing;
Above-mentioned hammer ram 9 promote put in place after, and before the let-down, drives two lifting hydraulic drive cylinders 12 (piston rod is bounced back), above-mentioned casing 9 is pressed to prescribed depth;
5. once more by above-mentioned casing 13 guiding, let-down hammer ram 9 impacts hammer ram 9 downwards to the casing 13 inner soil bodys, thereby reduces or the internal friction when eliminating the casing sinking;
6. carry out above-mentioned steps 3～5 repeatedly, until above-mentioned casing 13 is set to prescribed depth;
7. by casing 13, fill the compacting material, its compacting to required degree, is formed the enlarged footing (not shown) to its bottom;
8. form the concrete pile body, propose casing.
Claims (25)
1. a bottom has the job practices of the in-site pouring concrete pile of enlarged footing, and it comprises the steps:
A) casing is vertically stood on the foundation surface of regulation stake position;
B) by above-mentioned casing guiding, make hammer ram along vertically repeatedly the casing bottom soil body tentatively being impacted, until specified degree in the mode of mentioning the back let-down earlier;
C) above-mentioned hammer ram is promoted, before the let-down hammer ram, above-mentioned casing is pressed to prescribed depth;
D) once more by above-mentioned casing guiding, the let-down hammer ram impacts hammer ram downwards to the casing inside soil body, thereby reduces or the internal friction when eliminating the casing sinking;
E) carry out above-mentioned steps c repeatedly) and d), until above-mentioned casing is set to prescribed depth;
F) by casing, fill the compacting material to its bottom, its compacting to required degree, is formed enlarged footing;
G) form the concrete pile body, propose casing.
2. method according to claim 1 is characterized in that in above-mentioned steps c, in the lifting process of this hammer ram, when the bottom of above-mentioned hammer ram is promoted to the bottom surface of casing, above-mentioned casing is pressed to prescribed depth.
3. method according to claim 1 is characterized in that comprising following operation in above-mentioned steps c:
1) in the lifting process of this hammer ram, casing is rotated so that reduce the frictional force of the soil body to the casing external surface;
2) before the let-down hammer ram, above-mentioned casing is pressed to prescribed depth;
4. method according to claim 3 is characterized in that aforesaid operations 1) in action and aforesaid operations 2 to casing rotation) in the pressing action of casing hocket.
5. method according to claim 3 is characterized in that carrying out earlier aforesaid operations 1) in the action to casing rotation, carry out aforesaid operations 2 afterwards) in the pressing action of casing.
6. method according to claim 3 is characterized in that advanced line operate 1) in the pressing action of casing, carry out above-mentioned steps 2 afterwards) in the action to the casing rotation.
7. method according to claim 1, the active force that presses down that it is characterized in that above-mentioned casing are to come balance by the counter-force that anchor pole is set in ground provides.
8. method according to claim 1 is characterized in that at above-mentioned steps g) in, insert the pile body reinforcing cage, pour into pile concrete afterwards.
9. method according to claim 1 is characterized in that above-mentioned steps f) be performed such:
1) by this casing to stake hole bottom gradation insert building waste, make hammer ram do elevating movement along this casing by vertical direction, the building waste of being inserted is carried out macro-energy to be rammed, this rams degree is to determine like this, when hammer ram produces bounce-back, the injection amount that test hammer ram continuous three hits under the situation of filler not, wherein previous injection amount greater than after once injection amount, or with after once injection amount maintain an equal level, and above-mentioned three total injection amounts are less than design load, this design load is according to surrounding soil is farthest tamped, but the mode that this surrounding soil is not damaged is determined again, receive the degree of depth that the hammer hour hammer goes out casing greater than 50cm, thereby forming the bottom of artificial bearing stratum in the casing bottom;
2) irritate to the gradation of stake hole bottom by this casing and fill out building waste and cement sand-lime, or the compound of harsh concrete, the amount of inserting always of this compound is in the scope of 0.3～1m3, and the amount of inserting always less than above-mentioned building waste, make hammer ram do elevating movement along this casing by vertical direction, to irritate building waste and the cement sand-lime of filling out, or the compound of harsh concrete carries out macro-energy and rams, thereby forms the intermediate layer of artificial bearing stratum in the casing bottom;
3) pass through this casing to bottom, stake stake hole gradation perfusion harsh concrete, the amount of inserting always of this harsh concrete is at 0.3～1m
3Scope in, and less than above-mentioned building waste and cement sand-lime, or the amount of inserting always of the compound of harsh concrete, make hammer ram do elevating movement along this casing by vertical direction, the harsh concrete that is poured into is carried out macro-energy to be rammed, receiving the degree of depth that the hammer hour hammer goes out casing greater than 5cm, thereby forming the upper strata of artificial bearing stratum and finally constitute spherical artificial bearing stratum.
10. construction equipment of realizing the described method of claim 1, this equipment comprises hammer ram, casing, chassis, this chassis front end is provided with framework along perpendicular direction, this framework is supported on the chassis by the inclination support unit, on the chassis, be fixed with and put the formula main winch soon, top at framework is provided with pulley mechanism, walks around above-mentioned pulley mechanism and suspends above-mentioned hammer ram in midair from the rope that above-mentioned main winch stretches out, and this equipment also comprises the casing hold-down devices.
11. equipment according to claim 10, it is characterized in that above-mentioned casing hold-down devices comprises that the casing that is arranged at front portion, above-mentioned chassis promotes with the secondary hoist engine that presses down usefulness, is fixed in pulley on the above-mentioned chassis, is fixed in the pulley on framework top, pulley on the pulley that the rope that stretches out from above-mentioned secondary hoist engine is walked around the said frame top successively and the chassis and being connected with the lanyard portion that forms in the top of above-mentioned casing outer rim, thus can realize pressing down of casing.
12. equipment according to claim 10, it is characterized in that walking around the said frame top pulley rope by suspension hook with walk around the chassis on pulley and the rope that is connected with lanyard portion on the casing connects so that directly hook the suspension ring of casing top ends or coupled rope by above-mentioned suspension hook when carrying out the suspention of casing not carrying out the pressing action of casing and promoting action.
13. equipment according to claim 10, it is characterized in that above-mentioned casing hold-down devices comprises force bearing plate, following force bearing plate, be arranged at the driving cylinder between the force bearing plate and following force bearing plate on this, above-mentioned casing passes from the pars intermedia of casing hold-down devices, and this pars intermedia is provided with along the mechanism of horizontal clamping casing.
14. equipment according to claim 10 is characterized in that the front portion on above-mentioned chassis, along said frame can be provided with recovery type displaced spirals anchor pole device along the mode of vertical slip.
15. equipment according to claim 10, it is characterized in that said frame is a portal framed structure, it comprises two vertical supports, these two vertical supports tops are provided with crossbeam, above-mentioned inclination support unit is the inclination cramp bar, the one end is connected with the chassis, and its other end down is connected with this vertical supports a distance on the top from above-mentioned vertical supports.
16. equipment according to claim 15, it is characterized in that being vertically arranged with guide rail in the inboard of above-mentioned two vertical supports, be fixed with the casing centralizer on the external surface of the close above-mentioned guide rail in casing respectively, this casing centralizer includes the roller that can roll on above-mentioned guide rail.
17. equipment according to claim 16 is characterized in that above-mentioned vertical supports is a truss structure, it comprises 3 vertical poles that are triangularly arranged and connects cross bar between them.
18. equipment according to claim 10, it is characterized in that said frame comprises two vertical supports, these two vertical supports tops are provided with crossbeam, above-mentioned inclination support unit is the inclination girder truss, one end and chassis are hinged, its other end and above-mentioned crossbeam are hinged, and above-mentioned vertical supports is telescopic, the thin bar that it comprises thick hollow stem and can insert this hollow stem inside.
19. equipment according to claim 10 is characterized in that this equipment also comprises the casing whirligig.
20. equipment according to claim 19, it is characterized in that this casing whirligig is the clipping whirligig of casing that is arranged at the front portion of this main support, the clipping whirligig of this casing by the lifting driving cylinder below being positioned at it, can be supported on ground reaction plate and be connected.
21. equipment according to claim 20, it is characterized in that the clipping whirligig of above-mentioned casing comprises two casing clamping limbs that at one end are hinged, thereby by the driving cylinder connection two casing clamping limbs are tightly clamped casing between the other end of these two casing clamping limbs, be provided with at the relative side of above-mentioned two casing clamping limbs and be connected with a driving cylinder respectively, these two driving cylinders are hinged with above-mentioned chassis respectively.
22. equipment according to claim 20, it is characterized in that the clipping whirligig of above-mentioned casing comprises two casing clamping limbs that at one end are hinged, thereby by the driving cylinder connection two casing clamping limbs are tightly clamped casing between the other end of these two casing clamping limbs, be provided with at the relative side of above-mentioned two casing clamping limbs and be connected with a driving cylinder respectively, these two driving cylinders are connected with the main frame of above-mentioned casing clamping device respectively, their mutual keeping parallelisms, but extend in opposite direction, this main frame is connected with the chassis.
23. equipment according to claim 10 is characterized in that the front end on above-mentioned chassis is supported on the above-mentioned reaction plate by driving cylinder.
24. equipment according to claim 10 is characterized in that this equipment is provided with leveler.
25. equipment according to claim 24 is characterized in that above-mentioned leveler is arranged on the chassis, this leveler comprises the transverse horizontal meter of display device transverse horizontal degree and the vertical equity meter of display device vertical equity degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99100566 CN1093582C (en) | 1999-02-03 | 1999-02-03 | Construction method of in-situ pouring concrete pile and adopted construction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99100566 CN1093582C (en) | 1999-02-03 | 1999-02-03 | Construction method of in-situ pouring concrete pile and adopted construction equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1223322A true CN1223322A (en) | 1999-07-21 |
| CN1093582C CN1093582C (en) | 2002-10-30 |
Family
ID=5270071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99100566 Expired - Lifetime CN1093582C (en) | 1999-02-03 | 1999-02-03 | Construction method of in-situ pouring concrete pile and adopted construction equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093582C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381645C (en) * | 2003-11-21 | 2008-04-16 | 王继忠 | Constructure method of concrete pile |
| CN102561347A (en) * | 2012-01-19 | 2012-07-11 | 邓长峰 | Pile hammer with telescopic vertical columns |
| CN102677663A (en) * | 2012-06-01 | 2012-09-19 | 王彦 | Pile forming construction device for rammering, expanding and compacting fillers of composite foundation piles |
| CN102677664A (en) * | 2012-06-01 | 2012-09-19 | 王彦 | Pile-forming construction equipment for ramming and compacting filler of composite foundation pile |
| CN104314078A (en) * | 2014-11-05 | 2015-01-28 | 王继忠 | Concrete pile construction equipment and construction method thereof |
| CN106149480A (en) * | 2016-08-24 | 2016-11-23 | 中铁四局集团建筑工程有限公司 | It is applicable to the straight thread stake machine without hydraulic thick sand bed geology and construction method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350105C (en) * | 2005-09-28 | 2007-11-21 | 河北建设勘察研究院有限公司 | Vibrating piling-hammer sink-pull steel protective-cylinder piling method and special steel protective cylinder |
-
1999
- 1999-02-03 CN CN 99100566 patent/CN1093582C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381645C (en) * | 2003-11-21 | 2008-04-16 | 王继忠 | Constructure method of concrete pile |
| CN102561347A (en) * | 2012-01-19 | 2012-07-11 | 邓长峰 | Pile hammer with telescopic vertical columns |
| CN102561347B (en) * | 2012-01-19 | 2014-05-07 | 邓长峰 | Pile hammer with telescopic vertical columns |
| CN102677663A (en) * | 2012-06-01 | 2012-09-19 | 王彦 | Pile forming construction device for rammering, expanding and compacting fillers of composite foundation piles |
| CN102677664A (en) * | 2012-06-01 | 2012-09-19 | 王彦 | Pile-forming construction equipment for ramming and compacting filler of composite foundation pile |
| CN102677664B (en) * | 2012-06-01 | 2015-05-20 | 王彦 | Pile-forming construction equipment for ramming and compacting filler of composite foundation pile |
| CN102677663B (en) * | 2012-06-01 | 2016-06-22 | 王彦 | For the inserts of compound foundation pile being carried out the bore forming equipment of tamping compaction |
| CN104314078A (en) * | 2014-11-05 | 2015-01-28 | 王继忠 | Concrete pile construction equipment and construction method thereof |
| CN106149480A (en) * | 2016-08-24 | 2016-11-23 | 中铁四局集团建筑工程有限公司 | It is applicable to the straight thread stake machine without hydraulic thick sand bed geology and construction method |
| CN106149480B (en) * | 2016-08-24 | 2018-12-28 | 中铁四局集团建筑工程有限公司 | Straight rib line stake machine and construction method suitable for no hydraulic thick sand bed geology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1093582C (en) | 2002-10-30 |
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| C56 | Change in the name or address of the patentee | ||
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Address after: 102218, Beijing, Changping District East small town Taiping homes, building 31 Patentee after: Wang Jizhong Address before: 102209, Beijing, Changping District East small town Tiantongyuan Small District three, building 103, room 9 Patentee before: Wang Jizhong |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: BEIJING PUISSANT GEOTECHNICAL ENGINEERING CO., LTD. Assignor: Wang Jizhong Contract record no.: 2011110000108 Denomination of invention: Construction method of in-situ pouring concrete pile and adopted construction equipment Granted publication date: 20021030 License type: Exclusive License Open date: 19990721 Record date: 20110718 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20021030 |