CN101718099B - Automatic wall-forming device and method of static pressure continuous concrete wall - Google Patents
Automatic wall-forming device and method of static pressure continuous concrete wall Download PDFInfo
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- CN101718099B CN101718099B CN2009102301708A CN200910230170A CN101718099B CN 101718099 B CN101718099 B CN 101718099B CN 2009102301708 A CN2009102301708 A CN 2009102301708A CN 200910230170 A CN200910230170 A CN 200910230170A CN 101718099 B CN101718099 B CN 101718099B
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Abstract
The invention belongs to the technical field of buildings, relating to an automatic wall-forming device and method of static pressure continuous concrete wall used for anti-seepage, water interception and retaining occasions such as deep foundation pit, tunnel and riverbank; the existing full hydraulic static pile machine is used as a host machine; two automatic wall-forming device combinations mutually associated and respectively independently moved having wave-shaped sections can be clamped simultaneously; the surface shape of the wave-shaped plate and the rectangle inside casing are used as references, and the two short outer edges thereof are respectively provided with connectors having specific guiding limit function; the automatic wall-forming device provided with a double-open type valve at the end part thereof is internally pre-hung with a steel reinforcement cage; concrete is filled sequentially, and the wall-forming device is pressed into a preset thickness of soil layer one by one; one of the wall-forming device combination is lifted, and simultaneously a high frequency vibrator installed in a wave-shaped body is started; a reinforced concrete unit wall sections are formed by vibrating and lifting the wall-forming device; and the device and method has novel technology, good environmental protection effect, reliable quality, high bearing capacity, board applicability and short construction period.
Description
Technical field:
The invention belongs to builing industry foundation construction technical field, relate to a kind of static pressure continuous concrete wall automatic wall-forming device and method that is used for engineering retaining soil such as complicated deep foundation ditch, tunnel, river levee, antiseepage, the aspect that intercepts water.
Background technology:
Steel concrete diaphragm wall (abbreviation diaphragm wall) is as the supporting body of wall of complicated deep foundation ditch, subway, tunnel excavation support system, have that rigidity is big, intensity is high, good integrity and durability and impervious good characteristics, except that as foundation pit supporting construction and have concurrently the impervious function that intercepts water, toward contact with underground agent structure as the building bearing structure.Existing construction method of underground continuous wall, be with special trench equipment on ground, under the condition of mud off, the excavation section by section deep trouth, and in groove install reinforcing cage, with tremie method concreting under cement paste,, many unit wall section is coupled together with suitable joint style and form continuous underground wall body in a unit of underground formation wall section.The machinery of present domestic diaphragm wall body construction has three major types: bucket formula, impact type, swinging; And bucket formula machinery is divided into freshwater mussel formula grab bucket, scraper bowl, and wherein the grab bucket of freshwater mussel formula is divided into two kinds of hoist cable formula and guide rod types again; Impact type is divided into the drill bit impact formula and cuts a hole two kinds of plane formulas; Swinging has single head to bore and bull is bored two kinds; Job practices is mainly: carry out the groove section earlier and divide, dig guide channel, build and lead wall, with trench machine grooving section, the input mud off, because a large amount of dregs sink to bottom land in the digging process, can make subterranean wall produce excessive sedimentation and reduction bearing capacity as not removing, and sediment also produce a series of influences to subsequent handling, as reduce the underwater concrete flowability, influence cement and reinforcing bar bond stress, concrete strength is reduced or the like, can the clear end be the important procedure that guarantee the underground wall body quality after the grooving; Therefore after the unit groove section is excavated design elevation, before laying joint and reinforcing cage, must in time remove bottom land mud and sediment (being called for short the clear end); The general compressed air that adopts rises the liquid method at the existing clear end, sandstone suction pump spoil disposal method, three kinds of modes such as submersible pump spoil disposal method, the anti-cycle operation of normally proceeding mud after the groove section scrapes out is " changing the slurry method " clear end, the clear again end after also remaining at the bottom of the basic settling pit of dregs, dregs sinks to the bottom general needs 2～4h, hangs in joint then, lays reinforcing cage, insert conduit, concreting is transported the mud removing in time that concrete is extruded, and in time pulls out joint before the concrete ot-yet-hardened.
Diaphragm wall generally is suitable for: 1, the foundation ditch of cutting depth softer weak or soil layer property more complicated of soil condition more than 10 meters; 2, foundation ditch surrounding buildings thing or life pipeline should adopt the diaphragm wall support system to be able to effective guarantee to sedimentation is responsive; 3, the diaphragm wall body is impregnated with when being strict with as the part of agent structure and antagonism; When 4, foundation pit construction adopts contrary sequence method.Its supporting performance of existing diaphragm wall is superior, but its price is high with respect to support forms such as castinplace pile, steel sheet pile or cement earth piles, difficulty of construction is bigger, duration is long relatively, the discarded slurry difficult treatment has to a certain degree pollution to environment, becomes the wall difficulty in saturability clay, mud matter clay, artesian water soil layer, bearing capacity of wall body is lower, and comprehensive economy is not good enough.
Summary of the invention:
The objective of the invention is to overcome the defective of prior art, deficiency at construction of diaphragm wall equipment and method existence, design a kind of employing static(al) stake machine as main frame can clamping automatic wall-forming device implement static pressure type construction of continuous concrete wall method, realize diaphragm wall do not excavate, pollution-free, non-exhaust emission, the discharge of no mud, the feature of environmental protection is good, short construction period, reliable in quality, bearing capacity height, it is good to keep off the native antiseepage effect that intercepts water, the wider general purpose of suitable soil layer.
To achieve these goals, the present invention utilizes existing all-hydraulic static(al) stake machine as main frame, can the clamping cross section be two the interrelated automatic wall-forming device of self-movement combinations separately again of waveform simultaneously, cross sectional shape also can be made into many groups trapezoidal tabular, that heavy wall is straight is tabular etc.; Cross section inside casing shape has ellipse, rectangle, circle, polygon etc., and is different but function and principle are identical, for telling conveniently, states as benchmark with corrugated sheet surface configuration and rectangle inside casing.The cross section is that the automatic wall-forming device two minor face outer rims of waveform are shaped on the connector of specific guide to position-limiting action respectively, its end is equipped with in the automatic wall-forming device body of double-open flap valve and hangs in reinforcing cage in advance, fill concrete in succession, wall-forming device is pressed into predetermined soil depth one by one, because bottom soil is to the reaction force of flap valve, the bottom flap valve can not be opened, things such as its inner concrete can not flow out, things such as outside muddy water also can't enter, promote one of them in the wall-forming device combination, the reaction force that acts on the flap valve of end disappears, flap valve mixture deadweight effect is in vivo opened down, concrete flows out smoothly, start the dither of installing in the wave shape body simultaneously, promote wall-forming device while vibrating and form steel concrete unit wall section, it is incremental one by one that wall-forming device is pressed certain orientation, forms the diaphragm wall body that is formed by connecting by multiple-unit wall section.
Apparatus of the present invention only ooze to support system and retaining soil with different engineerings that requirement is different to be provided with multiple sectional dimension, and total length docks with being connected joint contract mouth by fundamental segment, and the usefulness contiguous block is connected adjustment with attachment screw; Positive and negative two facades in long limit vertically are provided with many groups and connect corrugated sheet, and the minor face left side is shaped on open type annular butt joint body by both sides, long limit, and corresponding both sides, long limit near place, the minor face right side are shaped on cylindrical butt joint body, and butt joint body and element body are isometric; The automatic wall-forming device of two same model structures is one group, and annular butt joint body is inserted in and is connected mutually in the cylindrical butt joint body and slides up and down, and two are pressed into one by one successively to extract and implement circulation; The automatic wall-forming device end is shaped on the double-open flap valve, magnetic devices is installed in the flap valve, when in the automatic wall-forming device body when unloaded, the magnetic devices rated attraction force is conducted oneself with dignity greater than flap valve, flap valve is in closed condition, tote weight surpasses the magnetic devices rated attraction force in the automatic wall-forming device body, and flap valve is opened; In process of press in since bottom soil to the reaction force of flap valve, mixture weight still can not be opened above magnetic devices rated attraction force flap valve in the body, when having only the automatic wall-forming device of lifting, the reaction force that acts on the flap valve of bottom disappears, flap valve just can be opened under the mixture action of gravity in vivo automatically, concrete flows out smoothly, start the vibrator of installing in the automatic wall-forming device corrugated sheet, promote automatic wall-forming device while vibrating and form underground unit wall section, multiple-unit wall section is connected to form diaphragm wall.
Construction method of underground continuous wall of the present invention comprises load-bearing retaining soil type diaphragm wall technology (retaining soil is that main load-bearing is auxilliary), keep off native bearing type diaphragm wall technology (load-bearing is that main retaining soil is auxilliary) and provide the diaphragm wall technology that outer support system is set three parts, the function that not only can be pressed into but also can promote of utilizing that the huge chucking power of all-hydraulic static(al) stake machine forms, adopt automatic wall-forming device, per two as a combination, concrete casting is filled in the automatic wall-forming device that preestablishes shape, be pressed into the body of wall (both the body of wall shape was with the device change of shape) that the predetermined depths of soil layer forms same device contour shape, each automatic wall-forming device of direction of advance back of only extracting, to stay in the soil another automatic wall-forming device as benchmark, because the guiding and the constraint of automatic wall-forming device butt joint body in the soil, during second automatic wall-forming device cover buries behind the docking adapter of automatic wall-forming device its direction and space promptly be subjected to the restriction of wall-forming device in the soil, two devices can only the minor face face be close to do and be slided up and down and can not do other direction displacements, upwards extract a device that is positioned at the back along preceding device butt joint body straight line and just form a unit wall section automatically, and the concrete of this unit wall section can will be arranged in the adjacent butt joint body of device of front wrap, this device of extracting is moved to the front device front end and be inserted in before the device preceding docking adapter be pressed into soil layer, then the device of former front has become one of the back of new press-in device again, one of back is extracted, the not solidified unit of the concrete wall section that forms new unit wall Duan Bingyu moulding just before realizes the mixed-forming of minor face interface, so be pressed into and extract circulation, form and a plurality ofly prolong the continuous unit wall section that connects and formed diaphragm wall; Load-bearing retaining soil type diaphragm wall technology is pressed into automatic wall-forming device under the soil layer earlier and stops about 2m, successively be pressed into predetermined soil layer after presetting reinforcing cage or shaped steel in it, promote automatic wall-forming device then while vibrating, concrete flows out the space that full device is abdicated, form and the identical unit wall section of the device bodily form, be connected to form diaphragm wall by a plurality of unit wall section, its function is foundation pit supporting construction system and double as agent structure exterior wall; Keeping off first automatic wall-forming device is pressed under the soil of native bearing type diaphragm wall technology stops about 2m, reinforcing cage and concrete are placed in it, flap valve becomes tight closed condition when being pressed into, unit wall section as Construction of Engineering Pile, two times of single wall section characteristic load bearing capacity that single wall section pressure reaches designing requirement can stop to press, wall section end absolute altitude buries the complexity of fluctuating inequality and rock and soil properties and may produce difference owing to ground, but the top mark height can be consistent, as when finding that the automatic wall-forming device bottom former calculating amount of concrete of the super desired depth of absolute altitude is not enough, just all do not built interpolation in time as yet at the automatic wall-forming device inner concrete, reinforcing cage is reserved and the reinforcing bar length of superstructure anchor or the shaped steel type of attachment of enough structural strengths, the limit slowly promotes limit vibration moulding then, the basis that adapts to the superstructure carrying is set at the diaphragm wall top, agent structure connects on the basis, forms not only to keep off that soil is impervious to intercept water but also as permanent bearing wall reliable delivery superstructure load; The diaphragm wall that outer support system is set technology is provided, pre-buried plastic pipe in reinforcing cage appropriate location or steel cylinder in automatic wall-forming device, pipe or tube suitable position are shaped on waterproof construction, prevent outer support slip casting bad sealing and produce seepage, pipe or tube two are given earlier and being sealed before pre-buried, be strayed into pipe when avoiding concreting or tube results in blockage, excavation of foundation pit cutter goes surperficial concrete to expose the pre-buried hole outer support anchor rod of can constructing easily in the future.
The present invention is used for " one " font single wall formula wall construction technology, " ∏ " shape or "T"-shaped wall construction technology, spliced structure wall construction technology and special-shaped pile constructing process; Building shape needs often to change the body of wall axis direction under the diaphragm wall base area of its formation, therefore there is the problem that turns in advancing in the stake machine, construction market is being walking with static(al) stake machine at present, during stake machine straight line moving, heavy stand unclamps clamping and extracts one of them device, can vacate the straight line of making respective distance for static(al) stake machine in one section rich space that is equivalent to the long back gauge of extracting apparatus in heavy stand horizontal linear direction and move, and walking stake machine must possess institute and adds and hold thing with the ground disengaging or imbed below ground and can implement when turning to; Automatic wall-forming device in use must be reserved the effective height (apart from about the above 4m in ground) of enough heavy stand clampings to the reliable clamping of wall-forming device for the assurance clamper, can not just wall-forming device be abandoned in underground because turn to, can only select wall-forming device is all promoted built on stilts, a machine is turned to smoothly, but as not taking extraordinary measure, automatic wall-forming device must cause the diaphragm wall integrally closed to lose efficacy after losing benchmark and reliably being connected when turning to; This worker method corner closing process is exactly that this characteristic of solving the stake machine turns to static pressure continuous concrete wall to be achieved and keeps anti-permeability performance good.
The present invention compared with prior art, its process novelty need not excavated, environmental protection effect is remarkable, economic benefit is good, wall quality can, the bearing capacity height, the scope of application is extensive, construction technology is convenient simple and direct, short construction period; Its apparatus structure novelty, easy to install, save the manpower financial capacity, automatic Continuity is good.
Description of drawings:
Fig. 1 faces the facade structures principle schematic for automatic wall-forming device of the present invention.
Fig. 2 looks the facade structures principle schematic for a left side of the present invention.
Fig. 3 looks up the cross-section structure principle schematic for Fig. 1 of the present invention.
Fig. 4 is the inventive method static pressure continuous concrete wall construction sequence schematic diagram.
The specific embodiment:
Also further specify in conjunction with the accompanying drawings below by embodiment:
Embodiment:
The automatic wall-forming device of present embodiment is made of element body, butt joint body, flap valve group three parts; Its element body partly comprises fundamental segment 1, connects joint 2, wedge interface 3, minor face face 4, minor face face 4 ', main channel 5, cable transverse passage-way 6, cooling water cocycle passage 7, circulation canal 7 ' under the cooling water, corrugated sheet 8, top wave form plate 9, end corrugated sheet 9 ', weather strip 10, water supply connector 11, water out adapter 12, cable accessing port 13, attachment screw 14, vibrator 15 connects corrugated sheet 18, last shutoff 24 and following shutoff 24 '; Major function is: 1, stressed and power transmission main body, 2, the mixture carrier wall section form mould of holding concurrently, 3, butt joint body, flap valve group component settle matrix; Long limit, element body cross section is 300mm～1200mm, and minor face is 100mm～1000mm, its surface configuration have combination trapezoidal tabular, that heavy wall is straight is tabular, waveform is tabular etc.; Element body cross section inside casing has ellipse, rectangle, circle, polygon etc., and is different but function and principle are identical, for telling conveniently, states as benchmark with corrugated sheet surface configuration and rectangle inside casing.The length overall of element body is to adopt wedge interface 3 to adjust by fundamental segment 1 with being connected joint 2, to adapt to the requirement of the different engineering degree of depth; Connect with its appearance and structure and the corrugated sheet 8 identical corrugated sheets 18 that are connected, connect corrugated sheet 18 back sides and make the multiple tracks bump slot structure, during butt joint emboss pit is embedded in the corresponding tongue and groove in long limit, element body cross section, and fastening with attachment screw 14, attachment screw 14 heads are imbedded and are prevented in the screw that attachment screw 14 from grinding examine damage in ground; Wave mode plate 8 profiles are waveform cement roof plate shape, along the vertical total length setting of the positive and negative facade of element body, all wave mode plate 8 contour shapes are identical with structure, its length is that fundamental segment 1 saves 2 integers of dividing exactly with being connected, every corrugated sheet 8 upper and lower end faces are shaped on for the groove of laying weather strip 10, during butt joint, weather strip 10 in the corrugated sheet 8 upper surface grooves of the groove alignment bottom, corrugated sheet 8 lower surface on top, the enforcement end face bumps to connect with attachment screw 14 and element body and fixes, and adjacent two corrugated sheet seam crossings are non-leakage; Corrugated sheet 8, top wave form plate 9 and end corrugated sheet 9 ' vertically are shaped on the main channel 5 of up/down perforation along element body, main channel 5 both sides concave faces are shaped on the screw that is screwed into for attachment screw 14 makes it that corrugated sheet is fixed on the element body, and what main channel 5 was used for vibrator 15 lays space and cable, cooling-water duct space; 5 bottoms, the main channel sealing of end corrugated sheet 9 ', top wave form plate 9 is shaped on water supply connector 11, water out adapter 12 and cable inlet 13, other main channel also is closed, positive and negative two facades are installed corresponding top wave form plate 9 at element body top and end, respectively one of end corrugated sheet 9 ', circulation canal 7 ' under the horizontal cooling water cocycle passage 7 of mutual dislocation and the cooling water about main channel 5 wherein is provided with, guarantee that cooling water is come in from the water supply connector 11 of first main channel 5 in the element body, circulation canal 7 ' enters another main channel 5, next door under the cooling water of bottom, this road again, cooling water circulation canal 7 flow to next main channel 5 again from the main channel 5 in next door, so circulation, go out from last main channel 5 top water out adapter 12, advance, water out adapter 11,12 and cable inlet 13 be installed in two top wave form plate 9 top end faces of positive and negative two facades respectively, enter outer tank by connecting flexible pipe; Examine area by arcuation surface increase element body surface area and rubbing of element body and clamper that a plurality of corrugated sheets 8 are formed, compressive stress obtains diffusion, element body seal ring thickness and rigidity have also been increased, settle vibrator in the corrugated sheet 8 in the main channel 5, be shaped on a horizontal cable passage 6 near the position of the main channel 5 inherent arrangement vibrators of every corrugated sheet 8, the cable of being convenient to vibrator 15 inserts and maintenance; The pressure type of element body cooling water cycles through water-in and water-out joint 11,12 usefulness flexible pipes and communicates with the water tank of stake on the machine, the water pump that is arranged in the water tank constantly pumps water, force cooling water to enter main channel 5 from water supply connector 11, after circulating, flow to water tank, in water tank, heat is distributed to and implements cooling in the atmosphere from water out adapter 12; The vibrator of installing in the element body 15 is a dither, and vibrator 15 places recirculated cooling water; Amplitude makes the automatic wall-forming device and the whole body soil body immediately transfer moving adsorbed state to from quiet adsorbed state, and concrete produces slip with inwall under vibration, and external friction in reducing reduces promotion power; Corrugated sheet 8 is made up of a plurality of along element body is vertically elongated, quantity is set can be increased and decreased on demand of vibrator then, and for preventing to shake, vibrator 15 is by the control of reasonable combination grouping time sharing segment.
The butt joint body of present embodiment partly comprises cylindrical butt joint body 16, and annular butt joint body 17, minor face face 4 and minor face face 4 ' play butt joint and guide function; Butt joint body also can be made into forms such as keyway formula butt joint body, trapezoidal butt joint body, polygon butt joint body, oval butt joint body, fan-shaped butt joint body; The element body cross section respectively is shaped on the elongated annular butt joint body 17 of element body near two sides, minor face face 4 director limit and protrudes minor face face 4 certain distances, and the annular opening on its both sides is symmetry mutually inwardly, and center line is met again, elongated bottom of annular ring and top open-ended; Two sides, long limit is located near minor face face 4 ' in the element body cross section, each limit is shaped on the cylindrical butt joint body 16 elongated with element body, cylinder is by the sectional dimension supporting key close with annular opening, be welded on and be close to the annular opening position that minor face face 4 ' is located the corresponding annular butt joint body 17 of two long limit faces, its cylinder when two element body minor face faces 4 ' and 4 are adjacent to is inserted in the annular ring, the supporting key is inserted in the annular opening, cylindrical butt joint body 16 slides up and down and can not make other directions along annular butt joint body 17 and is shifted, annular butt joint body 17 is installed in the both sides of wall-forming device element body minor face face 4, cylindrical butt joint body 16 is installed in two of wall-forming device element body minor face face 4 ', when pasting mutually with 4 opposites, two wall-forming device minor face faces 4 ' could realize above-mentioned functions, guarantee the minor face face 4 ' and 4 elongated being close to of element body, form inseparable assembly; Annular ring is open-ended up and down, slide up and down or cylinder slides up and down along annular ring along cylinder, in element body length overall scope, not limited by sliding distance, bury wall section bottom, the unit absolute altitude difference that rises and falls and cause when irregular to adapt to underground ground, ensure each unit wall section bearing capacity demand, two parallel annular butt joint bodies 17 are along the parallel protrusion minor face of element body two long limit horizontal axis directions face 4 a bit of distances, cooperate formation concave cross section shape with minor face face 4, two cylindrical butt joint bodies 16 are in parallel recessed minor face face 4 ' the corresponding a bit of distance of two long limit horizontal axis directions, cooperate formation convex shape section shape with minor face face 4 ', three limits in cross section closely cooperate and are concave cross section when forming two wall-forming devices butt joints in the convex shape section embedding concave cross section, spill restricts cylindrical butt joint body 16 and inserts in the annular butt joint body 17 just, or annular butt joint body 17 is inserted in the cylindrical butt joint body 16 just, can only slide up and down by the butt joint body restriction of two devices, the spill that has formed body of wall automatically connects.
The flap valve ingredient of present embodiment comprises flap valve 19, reinforcing rib flap valve 19 ', reinforcing rib 20, fundamental segment flap valve seat 21, flap valve seat 21 ', flap valve axle 22 and magnetic devices 23; Playing the ligand body deposits mixture, seals or open two big functions on demand; The flap valve 19 of carrying magnetic device 23, reinforcing rib flap valve 19 ' when automatic wall-forming device is unloaded since the magnetic attraction effect always close, when weight or external force surpass magnetic attraction in the device, flap valve 20,20 ' is opened, become 180 ° of straight hanging down with the long limit of element body face, need rotate to towards closing direction by external force and be less than 180 ° after flap valve was opened, and magnetic attraction just can attract flap valve 19, reinforcing rib flap valve 19 ' to close automatically; Reinforcing rib 20 has the process of press in guiding, strengthens flap valve seam crossing compressive strength and strengthens three effects of flap valve joint water shutoff; Fundamental segment 1 bottom face is shaped on uniform a plurality of fundamental segment flap valve seats 21 at interval, flap valve is shaped on and the identical flap valve seat 21 ' of fundamental segment flap valve seat 21 physical dimensions with fundamental segment bottom face joint, two flap valve seat convex-concaves dislocation butt joint, flap valve axle 22 is packed in flap valve seat 21 and the 21 ' circular hole, flap valve 19 and reinforcing rib flap valve 19 ' are fixed on the element body bottom face, do radially to rotate along flap valve axle 22, reach flap valve and open and close freely; Flap valve 19 and reinforcing rib flap valve 19 ' are arranged on element body bottom face long side direction two sides, and when unloaded, flap valve 19 and reinforcing rib flap valve 19 ' are in and close shape automatically under the suction of magnetic devices 23, be convenient to construct handling and centering; During static pressure continuous concrete wall, the mixture weight of packing in the automatic wall-forming device body must surpass the suction of magnetic devices 23, should be earlier during use automatic wall-forming device alignment fiducials point when the zero load be pressed into that the segment degree of depth stops in the soil, and then install reinforcing cage, concrete perfusion, although mixture weight is considerably beyond the suction of magnetic devices 23 in the element body, because of the reaction force of bottom soil to flap valve 19 and reinforcing rib flap valve 19 ', flap valve still is in the state of closing, mixture can not flow out in the body, outside muddy water can not be clamp-oned, and has guaranteed the one-tenth wall quality and the progress of static pressure unit wall section.
Existing static(al) stake machine is that central authorities are provided with a heavy stand, be provided with many group clamping oil cylinders and jaw in the heavy stand, pile tube or rectangle pile holder is tight and overcome counter-force in the piling process and can be with pile holder bad or produce and skid relatively, under the driving of piling oil cylinder, piecemeal stake is pressed into predetermined soil depth, herein with the clamping of the many groups in heavy stand oil cylinder and jaw general designation clamper.
Present embodiment should change the stake machine into by two heavy stands when implementing and be no less than 2.6m along same horizontal axis direction clamper inside casing size length overall side by side, but beam overall is no less than the not only synchronous working but also can work alone respectively and the heavy stand combination that is independent of each other of automatic wall-forming device that the mid point in length overall of 1.2m is separated into two same models of clamping simultaneously of two groups of clampers.Static(al) stake facility just can use automatic wall-forming device to implement static pressure continuous concrete wall worker method after being equipped with this condition.
Preparation, static(al) pile-forming machine perching are adjusted level, ground wall axis and unit wall section central point that mutatis mutandis transit is discharged, and to put with this be starting point, a stake machine is advanced along ground wall axis direction, except that corner or meet obstacle can not backward need handling.
The 1st step, be pressed into about 2 meters of soil layers after earlier wherein an A use clamper A ' to clamp with the automatic wall-forming device of two same specification models earlier and stop that (convenient single the automatic wall-forming device that is pressed into for the first time is called A for telling, the clamper of clamping first time A is A '; What be pressed into subsequently is called B, and clamper is B '), then in A, hang in reinforcing cage or other skeletons, pour into an amount of concrete, and then successively be pressed into predetermined soil depth and reach the design termination pressure simultaneously and can stop to press;
The 2nd step, B annular butt joint body 17 is inserted in slowly is pressed into soil layer in the cylindrical butt joint body 16 of A and stops for about 2 meters, in the B device, hang in reinforcing cage or other skeletons, pour into an amount of concrete, and then uninterruptedly be pressed into predetermined soil depth continuously and reach the design termination pressure simultaneously and can stop to press;
The 3rd step, since B annular butt joint body 17 can only slide up and down along the cylindrical butt joint body 16 of A, and restricted by the concave shaped space of A, B butt joint body, A, B can only be that right left minor face face is adjacent to side by side filling under the concrete situation in predetermined depths, stratum, and forming the cross section is the docking port of spill;
The clamper B ' of the 4th step, clamping B keeps the clamped condition original position motionless, start the A vibrator immediately, upwards slowly promote A simultaneously, ground disappears to A end flap valve reaction force, concrete overcomes magnetic devices suction under gravity and vibration double action, open flap valve and flow out the space that full automatic wall-forming device is vacateed in succession in the A, until A bottom built on stilts, so just progressively form with the A profile phase with concrete unit wall section A;
The 5th step, unclamp the clamper B ' of clamping B, being provided in A that the arm suspention on the static(al) stake machine extracted advances along the wall axis and stops (having the rectangular space of 2.6m side by side along the wall axis direction because of two heavy stands after being equal to the long back gauge in B cross section approximately, and a wall-forming device is along the longest 1.2m of axis direction, there is behind one of them wall-forming device the 2.6m-1.2m=1.4m axial length space can be in the heavy stand if extract) for stake machine displacement, the clamper A ' of former clamping A is because of the stake machine long back gauge of A that moved forward, and B stop original position is moving, A ' is become face B, use A ' that B is clamped and keep original position, the clamper B ' of former clamping B has just in time aimed at and has newly hung in the into A of the front that is positioned at B of heavy stand, using B ' to clamp A is pressed into soil layer in the cylindrical butt joint body 16 of B during annular butt joint body 17 covers are buried and stops for about 2 meters, in A, hang in reinforcing cage or other skeletons, pour into an amount of concrete, and then constantly be pressed into predetermined soil depth and reach the design termination pressure simultaneously and can stop to press; Because B is clamped and can not be shifted by A ', A annular butt joint body 17 can only be pressed into to lower slider along the cylindrical butt joint body of B 16, and be subjected to the space constraints of B.A butt joint body, can only be that the minor face face is adjacent to side by side in the B.A, form and be seen as " recessed " shape docking port from the cross section filling under the concrete situation in predetermined depths, stratum;
The 6th step, B ' clamp A and keep original position, start the B vibrator, upwards slowly promote B simultaneously, ground disappears to B end flap valve reaction force, concrete overcomes magnetic devices suction under gravity and vibration double action, in B, flow out the space that full automatic wall-forming device is vacateed in succession, so formed again and B profile phase concrete unit wall section B together, and, B unit wall section and A unit wall section are just mixed in the cross section is the docking groove of spill at its minor face face before the concrete ot-yet-hardened and are connected in aggregatesly, are formed with the continuous body of wall that two unit of A+B wall section makes up;
The 7th step, unclamp clamper B ', the B that the suspention of static(al) stake machine arm has been extracted advances along the wall axis and is equal to the long back gauge in A cross section approximately, at this moment A ' aligns A again, A is clamped and the maintenance original position, during B annular butt joint body 17 covers are buried in the cylindrical butt joint body 16 of A and be pressed into soil layer and stop for about 2 meters, in B, hang in reinforcing cage or other skeletons, pour into an amount of concrete, and then uninterruptedly be pressed into predetermined soil depth continuously and reach the design termination pressure simultaneously and can stop to press, because B annular butt joint body 17 can only be along the cylindrical butt joint body of A 16 to lower slider, and be subjected to A, the space constraints of B butt joint body, A, B can only be that to be adjacent to formation arranged side by side cross section be spill docking groove shape to the minor face face filling under the concrete situation in predetermined soil layer depths;
The 8th goes on foot, still clamps B, start A internal vibration device, upwards slowly promote A simultaneously, ground disappears to A end flap valve reaction force, and concrete overcomes magnetic attraction and opens flap valve and flow out the space that full automatic wall-forming device is vacateed in succession in A under gravity and vibration double action; Until A bottom built on stilts, so formed concrete unit wall section A again with the A profile
2, and A
2Unit wall section and B wall section were just closely mixed in aggregates before concrete does not still all solidify in Baltimore groove, were extended for A+B+A
2Diaphragm wall;
The 9th goes on foot, unclamps B ' clamper, static(al) stake machine is hung A and is advanced along the wall axis direction and be equal to the long back gauge in B cross section approximately, at this moment A ' clamps over against B and with it and keeps original position, B ' is clamped the A that newly hangs in, again A annular butt joint body 17 being pressed into soil layer along the cylindrical butt joint body 16 of B stops for about 2 meters, in A, hang in reinforcing cage or other skeletons, pour into an amount of concrete, and then uninterruptedly be pressed into predetermined soil depth continuously and reach the design termination pressure simultaneously and can stop to press.
Building shape needs often to change the underground wall body axis direction under the base area.When static(al) stake machine turned to, gripped object or be depressed into below the ground level maybe and must break away from ground turned to otherwise can hinder a machine; When enforcement ground wall turns to, the automatic wall-forming device combination all can only be lifted from ground, at this moment, new body of wall loses effective closed and butted matrix, for the ground wall that makes the new body of wall that turns to and former straightway effectively combination reach ground wall integral sealing effect, adopt gyrator to cooperate the corner closing process when turning to; One of gyrator is shaped on and the identical corrugated surface of two unit of straightway A.B wall section joint portion ripple for minor face 4 ' increases, and makes things convenient for the vertical butt joint of corner body of wall and straight line two wall section joints; Two of gyrator is to add system and the corrugated sheet 8 close identical wavy surfaces of annular butt joint body 17 place's ripples at minor face face 4 '; Three of gyrator is shaped on the ripple identical with corrugated sheet 8 external wavinesses surface of wall good fit when doing 90 ° of T shapes and intersect vertically with convenient and straightway body of wall for minor face face 4 ' increases; Specific practice is three the automatic wall-forming device that is pressed into the band gyrator when last unit of straightway wall section, extract three automatic wall-forming device of band gyrator then, the stake machine walks to and parallelly with former straightway body of wall by the foundation ditch outside wall-forming device corrugated surface is adjacent to the straightway body of wall and is pressed into the A.B A set of wall, A.B group groove interface should be close to the end surface dislocation of three unit wall section minor face face 4 ' of former straightway band gyrator and body of wall wavy surface and straightway body of wall wavy surface, ground is all lifted from the automatic wall-forming device combination once more, the stake machine is done 90 ° and is turned to, to aim at B body of wall wavy surface with two automatic wall-forming device minor face face 4 ' ripple of gyrator after turning to, two long limit corrugated surface of gyrator corresponds to three in type wall section ripples of gyrator, two wall-forming device of two the wall-forming device minor face face 4 ' that makes the band gyrator and B body of wall corrugated surface and band gyrator is pressed into about soil layer 2m after wherein minor face face 4 ' the ripple wall end face of last elementary section of wall-forming device of three of a long limit corrugated surface and band gyrator coincide as far as possible and stops, and does not design termination pressure and can stop toward not stopping to be pressed into predetermined soil depth continuously after two wall-forming device of band gyrator is placed the reinforcing cage concrete perfusion and reaching; Be pressed into A by the 2nd step, the annular butt joint body 17 of A is inserted in two the cylindrical butt joint body 16 of wall-forming device of band gyrator; Construct by 3 steps of worker's method step the to the 9th step circulation successively, just formed the new diaphragm wall behind the corner; According to the requirement of corner closed state, an also optional majority gyrator makes up strengthens the corner sealing.
Press the steps in sequence circulation construction of present embodiment, the a plurality of unit wall section that forms all coupled together before the concrete ot-yet-hardened, automatically form the diaphragm wall that unit wall section is connected with leakproof between the unit wall section, wall section joint, Unit two becomes the groove shape, is highly profitable for the impervious of body of wall.
Claims (3)
1. a static pressure continuous concrete wall automatic wall-forming device is characterized in that automatic wall-forming device is made of element body, butt joint body, flap valve group three parts; Its element body partly comprises fundamental segment, connects joint, wedged interface, minor face face, minor face face ', circulation canal, corrugated sheet, top wave form plate, end corrugated sheet, weather strip, water supply connector, water out adapter, cable accessing port, attachment screw, vibrator, connection corrugated sheet under the main channel, cable transverse passage-way, cooling water cocycle passage, cooling water, go up shutoff and following shutoff; Major function one is stressed and power transmission main body, the 2nd, and the mixture carrier wall section form mould of holding concurrently, the 3rd, butt joint body, flap valve group component are settled matrix; Long limit, element body cross section is 300mm～1200mm, and minor face is 100mm～1000mm, and its cross sectional shape is that waveform is tabular; Element body cross section inside casing is a rectangle; The length overall of element body is to adopt the wedged interface adjustment by fundamental segment with being connected joint, to adapt to the requirement of the different engineering degree of depth; The be connected corrugated sheet identical with corrugated sheet with its appearance and structure connects, connect the corrugated sheet back side and make the multiple tracks bump slot structure, during butt joint emboss pit is embedded in the corresponding tongue and groove in long limit, element body cross section, and fastening with attachment screw, the attachment screw head is imbedded and prevent in the screw that attachment screw from wearing and tearing in ground; Corrugated sheet is similar to waveform cement roof plate shape outward, along the vertical total length setting of the positive and negative facade of element body, the corrugated sheet contour shape is identical with structure, its length is that fundamental segment saves the integer of dividing exactly with being connected, every corrugated sheet upper and lower end face is shaped on for the groove of laying weather strip, during butt joint, and weather strip in the corrugated sheet upper surface groove of the groove alignment bottom, corrugated sheet lower surface on top, the enforcement end face bumps to connect with attachment screw and element body to be fixed, and makes adjacent two corrugated sheet seam crossings non-leakage; Corrugated sheet, top wave form plate and end corrugated sheet vertically are shaped on the main channel of up/down perforation along element body, both sides, main channel concave face is shaped on the screw that is screwed into for attachment screw makes it that corrugated sheet is fixed on the element body, and what the main channel was used for vibrator lays space and cable, cooling-water duct space; Bottom, the main channel sealing of end corrugated sheet, the top wave form plate is shaped on water supply connector, water out adapter and cable inlet, other main channel also is closed, positive and negative two facades are installed corresponding top wave form plate at element body top and end, each one of end corrugated sheet, circulation canal under the horizontal cooling water cocycle passage of mutual dislocation and the cooling water about main channel wherein is provided with, guarantee that cooling water is come in from the water supply connector of first main channel in the element body, circulation canal enters another main channel, next door under the cooling water of bottom, this road again, the cooling water circulation canal flow to next main channel again from the main channel in next door, so circulation, go out from last top, main channel water out adapter, advance, water out adapter and cable inlet are installed in two top wave form plate top end faces of positive and negative two facades respectively, enter outer tank by connecting flexible pipe; The surface of the semicircle arcuation of being made up of a plurality of corrugated sheets increases the friction area of element body surface area and element body and clamper, compressive stress obtains diffusion, element body seal ring thickness and rigidity have also been increased, in corrugated sheet, settle vibrator in the main channel, make element body and peripheral soil solidifying lax easily; Be shaped on a horizontal cable passage near the position of the inherent arrangement in the main channel of every corrugated sheet vibrator, the cable of being convenient to vibrator inserts and maintenance; The pressure type of element body cooling water cycles through the water-in and water-out joint and communicates with the water tank of stake on the machine with flexible pipe, the water pump that is arranged in the water tank constantly pumps water, force cooling water to enter the main channel from water supply connector, after circulating, flow to water tank, in water tank, heat is distributed to and implements cooling in the atmosphere from water out adapter; The vibrator of installing in the element body is a dither, and vibrator places recirculated cooling water; Amplitude makes the automatic wall-forming device and the whole body soil body immediately transfer moving adsorbed state to from quiet adsorbed state, and concrete produces slip with inwall under vibration, and external friction in reducing reduces promotion power; Corrugated sheet is made up of a plurality of along element body is vertically elongated, thus vibrator according to demand arbitrarily increase and decrease quantity is set, vibrator is by the reasonable combination time sharing segment control that is set to divide into groups;
Butt joint body partly comprises cylindrical butt joint body, annular butt joint body, minor face face and minor face face ', play butt joint and guide function; Two sides, long limit, element body cross section respectively is shaped on the elongated annular butt joint body of element body and protrudes minor face face certain distance, and the annular opening on its both sides is symmetry mutually inwardly, and center line is met again, elongated bottom of annular ring and top open-ended; Two sides, long limit is near the minor face face in the element body cross section ' locate, each limit is shaped on the cylindrical butt joint body elongated with element body, cylinder is by the sectional dimension supporting key close with annular opening, be welded on by the minor face face ' locate the annular opening position of the corresponding annular butt joint body of two long limit faces, its cylinder when two element body minor face faces are adjacent to is inserted in the annular ring, the supporting key is inserted in the annular opening, cylindrical butt joint body inserts annular butt joint body and slides up and down and can not do the displacement of other directions, the annular butt joint body is installed in a bit of distance of both sides protrusion minor face face of the long limit of wall-forming device element body face, cylindrical butt joint body is installed in two recessed minor face faces of the long limit of wall-forming device element body face ' a bit of distance, when two wall-forming device minor face faces ' could realize above-mentioned functions when pasting mutually with the minor face face, guarantee elongated being close to of minor face face of element body, form inseparable assembly; Annular ring is open-ended up and down, slide up and down or cylinder slides up and down along annular ring along cylinder, in element body length overall scope, not limited by sliding distance, to bury wall section bottom, the unit absolute altitude that causes when irregular of rising and falling inconsistent to adapt to underground ground, two parallel annular butt joint bodies are along a bit of distance of element body two long limit horizontal axis direction parallel protrusion minor face faces, cooperate the formation concave cross section with the minor face face, two cylindrical butt joint bodies are in the parallel recessed minor face face of two long limit horizontal axis directions ' corresponding a bit of distance, with the minor face face ' cooperate and form convex shape section, three limits in cross section closely cooperate and are the concave cross section shape when forming two wall-forming devices butt joints in the convex shape section embedding concave cross section, spill limits cylindrical butt joint body and inserts just in the annular butt joint body, or annular butt joint body is inserted in the cylindrical butt joint body just, can only be slided up and down by two butt joint body constraints, the spill that has formed body of wall automatically connects;
The flap valve ingredient comprises flap valve, reinforcing rib flap valve, reinforcing rib, fundamental segment flap valve seat, flap valve seat, flap valve axle and magnetic devices; Playing the ligand body deposits mixture, sealing on demand or opens two big functions; The flap valve of carrying magnetic device when automatic wall-forming device is unloaded since the magnetic attraction effect always close, when weight or external force surpass magnetic attraction in the device, flap valve is opened, become 180 ° with the long limit of element body face, need be less than 180 ° towards closing direction by the external force rotation after flap valve is opened, magnetic attraction just can attract flap valve to close automatically; Reinforcing rib has the process of press in guiding, strengthens flap valve seam crossing compressive strength and strengthens three effects of flap valve joint water shutoff; The fundamental segment bottom face is shaped on uniform a plurality of fundamental segment flap valve seats at interval, flap valve and fundamental segment bottom face joint are shaped on and the measure-alike flap valve seat of fundamental segment flap valve holder structure, two flap valve seat convex-concaves dislocation butt joint, the flap valve axle is packed in the flap valve seat circular hole, flap valve is fixed on the element body bottom face, only radially rotate along the flap valve axle, reach flap valve and open and close freely; Flap valve is arranged on element body bottom face long side direction two sides, when unloaded, flap valve is under the suction of magnetic devices, be in and close shape automatically, be convenient to construct handling and centering, during static pressure continuous concrete wall, the mixture weight of packing in the automatic wall-forming device body surpasses the suction of magnetic devices, should be earlier during use automatic wall-forming device alignment fiducials point when the zero load be pressed into that the segment degree of depth stops in the soil, and then install reinforcing cage, concrete perfusion is although mixture weight is considerably beyond the suction of magnetic devices, because of the reaction force of bottom soil to flap valve in the element body, flap valve still is in the state of closing, mixture can not flow out in the body, and outside muddy water can not be clamp-oned, and has guaranteed the one-tenth wall quality and the progress of static pressure unit wall section.
2. a method of utilizing the described static pressure continuous concrete wall automatic wall-forming device of claim 1 to carry out automatic wall-forming is characterized in that into wall method and comprises load-bearing retaining soil type diaphragm wall technology, the native bearing type diaphragm wall technology of retaining and provide the diaphragm wall technology that outer support system is set three parts; The function that not only can be pressed into but also can promote of utilizing that the huge chucking power of all-hydraulic static(al) stake machine forms, adopt automatic wall-forming device, per two as a combination, concrete casting is filled in the automatic wall-forming device that preestablishes shape, be pressed into the body of wall that the predetermined depths of soil layer forms same device contour shape, each automatic wall-forming device of direction of advance back of only extracting, to stay in the soil another automatic wall-forming device as benchmark, because the guiding and the constraint of automatic wall-forming device butt joint body in the soil, its direction and space promptly are subjected to the restriction of device butt joint body in the soil behind the docking adapter that installs during second automatic wall-forming device cover buries, two devices can only the minor face face be close to do and be slided up and down and can not do other direction displacements, also can only upwards extracting along pre-installed postpone end butt joint body straight line of the device of back is back with regard to unit wall section of automatic formation, and the concrete of this unit wall section can be wrapped the device rear end butt joint body of front, this device of extracting is moved to the front device front end and be inserted in the docking adapter of this device and compress into soil layer, the then former device that comes the front has become one of the back of new press-in device again, one of back is extracted again, this new unit wall section just is destined to realize mixing of minor face mating face with the unit wall section of the concrete ot-yet-hardened of moulding just before, so be pressed into and extract circulation, form and a plurality ofly prolong the continuous unit wall section that connects and formed diaphragm wall; Load-bearing retaining soil type diaphragm wall technology is earlier automatic wall-forming device to be pressed into that 2m stops under the soil layer, successively be pressed into predetermined soil layer after presetting reinforcing cage or shaped steel in it, promote automatic wall-forming device then while vibrating, concrete flows out the space that full device is abdicated, the single wall section identical with the device bodily form forms, being connected to form to keep off soil by a plurality of unit wall section is that main load-bearing is the diaphragm wall of assisting, mainly as foundation pit supporting construction system double as agent structure exterior wall; Keep off native bearing type diaphragm wall technology earlier automatic wall-forming device is pressed into soil down 2m stop, reinforcing cage and concrete are placed in it, flap valve becomes tight closed condition when being pressed into, unit wall section as Construction of Engineering Pile, unit wall section pressure stops after reaching single wall section bearing capacity of designing requirement, body of wall bottom absolute altitude difference may occur because ground buries the complexity of rise and fall uneven and rock and soil properties, but when automatic wall-forming device bottom absolute altitude surpasses former desired depth, all do not built just in time to add as yet at the automatic wall-forming device inner concrete and can ensure the unanimity that top mark is high, reinforcing cage should be reserved and the reinforcing bar length of superstructure anchor or the shaped steel type of attachment of enough structural strengths, the limit slowly promotes limit vibration moulding then, the basis that adapts to the superstructure carrying is set at the underground wall body top, agent structure connects on the basis, form not only keep off soil impervious intercept water but also reliable delivery superstructure load be that main retaining soil is the permanent bearing wall of assisting with the load-bearing; The diaphragm wall that outer support system is set technology is provided, pre-buried plastic pipe or steel cylinder in the reinforcing cage in automatic wall-forming device, and will manage or tube making and settlement waterproof construction, prevent the seepage that anchor bolt construction grouting behind shaft or drift lining bad sealing causes, be provided with placket or the pipe two seal in advance, be strayed into socket when preventing concreting and result in blockage, but the excavation of foundation pit cutter goes surperficial concrete to expose the outer support anchor rod of pre-buried hole convenient construction in the future.
3. static pressure continuous concrete wall automatic wall-forming device according to claim 1 it is characterized in that its element body cross sectional shape or trapezoidal tabular for making up, or heavy wall is straight tabular; Element body cross section inside casing or be ellipse, rectangle, circle.
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| CN2009102301708A CN101718099B (en) | 2009-11-14 | 2009-11-14 | Automatic wall-forming device and method of static pressure continuous concrete wall |
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| JP6166264B2 (en) * | 2011-09-27 | 2017-07-19 | ガルツォン， モーリスＧａｒｚｏｎ， Ｍａｕｒｉｃｅ | How to build a retaining wall |
| CN104074195B (en) * | 2014-07-21 | 2016-08-17 | 浙江华展工程研究设计院有限公司 | A kind of method controlling the outer surface subsidence of foundation ditch by horizontal grouting |
| CN104612178B (en) * | 2014-12-31 | 2016-04-20 | 卢兴耐 | Soil-cement wall forming machine |
| CN105178314B (en) * | 2015-07-23 | 2017-01-18 | 青岛静力工程股份有限公司 | Squeezing type underground continuous wall gapless steering device |
| CN105002885B (en) * | 2015-07-23 | 2016-07-20 | 青岛静力工程股份有限公司 | Extruding type diaphram wall displacement wall-forming device and using method |
| CN105133574B (en) * | 2015-07-23 | 2017-01-04 | 青岛静力工程股份有限公司 | Extruding type diaphram wall terminal closes wall-forming device and using method |
| CN105133612B (en) * | 2015-07-23 | 2017-06-16 | 青岛静力工程股份有限公司 | Static(al) stake machine multifunction clips wall device |
| CN106393405B (en) * | 2016-09-28 | 2019-07-09 | 周兆弟 | Make the mold of diaphragm wall and the method with the Mold Making diaphragm wall |
| CN114441406B (en) * | 2022-01-05 | 2023-04-07 | 中交第四航务工程局有限公司 | Test system and test method for simulating local seepage of waterproof curtain of foundation pit |
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