CN101962953A - New method for constructing part-bonding pre-stress uplift pile - Google Patents
New method for constructing part-bonding pre-stress uplift pile Download PDFInfo
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- CN101962953A CN101962953A CN2010102825509A CN201010282550A CN101962953A CN 101962953 A CN101962953 A CN 101962953A CN 2010102825509 A CN2010102825509 A CN 2010102825509A CN 201010282550 A CN201010282550 A CN 201010282550A CN 101962953 A CN101962953 A CN 101962953A
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Abstract
The invention discloses a new method for constructing a part-bonding pre-stress uplift pile, which comprises the following steps of: drilling down and picking up by using a special drilling tool, pressing in cement paste by using a high-pressure pump, repeatedly performing jet grouting, and performing directional jet grouting to the designed elevation to form a cement-soil pile; and inserting a concrete steel wire strand cage into the formed cement-soil pile to the designed elevation, wherein after the cement-soil pile is solidified, cement mortar or plain concrete is formed, and forms a pile with the concrete steel wire strand cage; and the special drilling tool comprises a high-power stirring pile machine, a high-power jet grouting pile rig or a long screw jet grouting and directional jet grouting rig. The new method has the advantages that: because the cement paste is stirred with original foundation soil or drilled foundation soil to be jetted to form the cement-soil pile, the subsequent insertion of a reinforcement cage or concrete steel wire strand cage is easily implemented; and the new method is suitable for strata such as tight sand layer and pebbly sand which are not applicable for conventional methods, and solves the problems that the concrete is difficultly poured in a long screw holing pipe and then the reinforcement or concrete steel wire strand cage is more difficultly inserted.
Description
Technical field
The present invention relates to stake of a kind of novel resistance to plucking anti-floating and piling method thereof, it specifically is a kind of new method of the part binding prestress resistance to plucking anti-floating stake of constructing, belong to the piling method in the building foundation construction, can be used for the construction of resistance to plucking anti-floating stake, also can be used for the construction of compressive pile or slope protection pile.Especially be applied in more apparent advantage in closely knit layer of sand and the sand-pebble layer.
Background technology
The advantage of the part binding prestress resistance to plucking anti-floating stake of prior art is: changed the stressed proterties of concrete, made concrete stressed more reasonable, can carry out resistance to plucking anti-floating stake design by one-level cracking resistance seam; Save a large amount of reinforcing bars; Insert reinforcing bar-steel strand cage behind the long spiral pore-forming guncreting and realized rapid construction, the efficient height is constructed fast 5～10 times than classical inverse circulation drilling machine; Without mud off, there is not mud contamination, realized dried operation, be beneficial to safety construction, especially in city construction, more apparent its advantage.
Promote rapidly with its obvious superiority by ZL200710065368.6 " partial adhered prestressed pile against drawing and floating and job practices thereof " and ZL200720104256.2 " the steel strand cage of partial adhered prestressed pile against drawing and floating " patented technology that my application has also been authorized.Its construction technology is to adopt the long-spiral drilling machine pore-forming, pump pressure in pipe high slump granule concrete, and reinforcing bar-steel strand cage pile is inserted in the back.But when running into close sand pebble layer or thick sand bed, just the concrete perfusion difficulty can occur, even the back is slotting, and reinforcing bar-the steel strand cage is very difficult, certain engineering anti-floating stake design stake footpath 600mm, the long 20m of stake, layer of sand thick 17～18m in bottom in the long scope of its king-pile, densification, rear inserting cage is extremely difficult, 2～3 piles of can only constructing in one day, and cage can only be inserted into 13～15m, and efficient is low, and quality can not guarantee.Adopted the more powerful vibrating hammer of bigger weight can not descend projected depth, the constructor is extremely puzzled.Adopted that more high slump granule concrete is also of no avail, concrete supply the merchant also have strong comments.Construction unit is to such construction speed and also strong dissatisfaction of quality.
According to relevant document introduction, stir or the churning cement earth pile not obvious with the interface of soil, thereby make its side frictional resistance equal 5 times of side frictional resistance of reinforced concrete pile and soil! These characteristics have determined stirring concrete earth pile, churning cement earth pile or rotary jet stirring cement earth pile its side frictional resistance if can be brought into play, and its bearing capacity will improve greatly.Stake just can be shortened, and is convenient to construction, can ensure the quality of products and progress.
Summary of the invention
In order to solve above-mentioned layer of sand and the sand-pebble layer concrete perfusion difficulty of running into that prior art exists, reinforcing bar-more difficult problem of steel strand cage is inserted in the back, simultaneously in order to bring into play the potentiality of the huge side friction of stake that paddling process, churning method or rotary jet stirring method form, the present invention has used " composite combined thinking method ", and a kind of new method of the part binding prestress resistance to plucking anti-floating stake of constructing is provided.
Technical scheme of the present invention is: a kind of new method of the part binding prestress resistance to plucking anti-floating stake of constructing is characterized in that, at layer of sand or sand-pebble layer, the employing specific drilling tool drills down and up, and being pressed into cement paste with high-pressure pump simultaneously, design elevation is revolved, is sprayed onto surely in spray repeatedly, forms cement earth pile; In this cement earth pile that forms, insert concrete-steel twisted wire cage then to design elevation, with ground tackle the steel strand of concrete-steel twisted wire cage are locked in reserved location afterwards; Be cement mortar or plain concrete after described cement earth pile condenses, constitute pile with concrete-steel twisted wire cage; Described specific drilling tool comprises that high-power mixing pile machine is used to stir into cylindrical cement earth pile, or the churning of high-power rotary churning pile machine becomes cylindrical cement earth pile, or adopts long-auger jet-grouting, sprays rig surely and stir into the cement earth pile that has lug.
Described employing long-auger jet-grouting, fixed spray stir in the cement earth pile that has lug, form in the process of lug carrying out deciding spray, and drilling tool does not rotate, and the cross sectional shape of the pile body of formation is all identical everywhere axis.
Described employing long-auger jet-grouting, fixed spray stir in the cement earth pile that has lug, form in the process of lug carrying out deciding spray, drilling tool whenever keeps at a certain distance away and just rotates an angle, and cross sectional shape each on axis of the pile body of formation is section inequality, differs described angle.
Described high-power mixing pile machine is long helical stir stake machine.
Adopt described high-power mixing pile machine with qualified cement paste and foundation soil or after drawing the hole loosening foundation soil stir into cement earth pile, be cement mortar or plain concrete after condensing.
Adopt high-power rotary churning pile machine with qualified cement paste with foundation soil or after drawing the hole loosening foundation soil construct into the cement-soil rotary churning pile, be cement mortar or plain concrete after condensing.
Loosening foundation soil stirs spray or is sprayed into cement earth pile surely employing large power long auger jet-grouting mixing pile machine with qualified cement paste and foundation soil or after drawing the hole, is cement mortar or plain concrete after condensing.
Described pile can be realized the purpose of construction resistance to plucking anti-floating stake, the purpose of also can realize constructing compressive pile and slope protection pile.
The invention has the beneficial effects as follows: since to be cement paste with former foundation soil stir or draw the hole after foundation soil stir to spray and form " cement-soil " pile body, the back inserts reinforcing cage or reinforcing bar-steel strand cage just is easy to enforcement.Can be widely used in the stratum that conventional methods such as closely knit layer of sand and sandy gravel can not be suitable for, solved and inserted reinforcing bar or reinforcing bar-more difficult difficult problem of steel strand cage in the long spiral pore-forming pipe after the concrete perfusion difficulty, construction is become easily, and speed of application improves greatly, and quality reaches assurance; And the stake that the more traditional piling method of its bearing capacity forms will improve greatly, and cost descends greatly.Compared with prior art shown its great superiority.
Description of drawings
Fig. 1 is a process chart of the present invention;
Fig. 2 is the construct general structure schematic diagram of pile body first embodiment that forms of the present invention;
Fig. 3 is the D-D sectional drawing of Fig. 2;
Fig. 4 is the construct general structure schematic diagram of pile body second embodiment that forms of the present invention;
Fig. 5 is the E-E sectional drawing of Fig. 4;
Fig. 6 is the F-F sectional drawing of Fig. 4;
Fig. 7 is the G-G sectional drawing of Fig. 4;
Fig. 8 is the construct general structure schematic diagram of the 3rd embodiment of the pile body that forms of the present invention;
Fig. 9 is the A-A sectional drawing of Fig. 8;
Figure 10 is the B-B sectional drawing of Fig. 8;
Figure 11 is the C-C sectional drawing of Fig. 9.
The specific embodiment
Referring to Fig. 2～Figure 11, the basic structure that adopts the pile body that process method construction of the present invention forms is columniform stake core 1 that is formed by churning and the lug 2 that is formed by fixed spray, and it is uniform that lug 2 is generally the outer peripheral faces of two or four an edge core 1.
Fig. 2 and first embodiment shown in Figure 3 be four lugs 2 of whole pile body all on straight line (parallel) separately with axis, just drill bit does not rotate in lug 2 processes that form pile body, sprays (vectored injection cement paste) surely in a direction all the time.
The pile body (four lugs 2) of second embodiment of Fig. 4～shown in Figure 7 is formed by three sections, Fig. 4～Fig. 6 has represented the cross section structure of the three sections pile bodies in upper, middle and lower respectively, the lug 2 corresponding (on same straight line) of the pile body of two sections, the lug 2 of the pile body in stage casing differs 45 with the lug 2 of the pile body of two sections, just in lug 2 processes that form the three sections pile bodies in upper, middle and lower, one section pile body drill bit of every formation just rotates 45.
The pile body (two lugs 2) of the 3rd embodiment of Fig. 8～shown in Figure 11 is also formed by three sections, and forming process is identical with second embodiment.
Except above-mentioned pile body shape, " cement-soil " pile body shape also can not established lug, is cylindrical.
After construction forms above-mentioned " cement-soil " pile body, insert reinforcing cage or reinforcing bar-steel strand cage, solidify the back and form the pile pile body.
Construction with Yunnan Province city cultural center science and technology museum, cultural center, national grand theater, museum, the art museum is an example below, and in conjunction with Fig. 1 technology of the present invention is elaborated.The job site was vegetable plot, fish pond originally, and local location is filled and led up.
1.1 stratum, place
Plan to build the face of land, place and cover artificial earth fill's layer, being mainly the plain fill part accompanies a small amount of miscellaneous fill and ploughs soil, thickness is 0.0～2.4 meter, it is Quaternary system slope proluvial down, dash, the lake is long-pending and sloping eluvial cohesive soil, varied in thickness is bigger, and thickness is about 2.4～17.2 meters, and the bottom is by Cretaceous System Man Gang group (K
1M) mud stone is formed.
In 33.4 meters drilling depth scopes, according to the genetic type, ground title, the physico-mechanical properties that disclose the stratum, foundation soil is divided into five big layers, several subgrades and lens, division is as follows from top to bottom:
1, artificial earth fill's layer (Q
M1):
1.
1Banket: reddish brown, reddish brown, yellowish-brown, wet, loose slightly, based on silty clay, hole is bigger, local folder Φ 1-3cm mud stone, siltstone rubble, accidental Φ＞5cm mud stone, siltstone rubble.Thickness 0.0-2.4 rice changes greatlyyer, and local location folder thin layer is ploughed soil and a small amount of miscellaneous fill.
1.
2Plough soil: brown, brownish red, wet slightly, hole is bigger, and is loosely organized, presss from both sides a large amount of plant roots and stems, and this layer distribution is less, only distributes to some extent near the edge, fish pond, and thickness is also less, for 10cm～50cm does not wait, lacks in the fish pond.
2, sloping diluvial formation (Q
D1+p1):
2.
1Clay: red, the yellow folder cervinus of red, the yellowish green folder of reddish brown, yellowish green, yellow folder, wet slightly, mould firmly, the part is hard-plastic state, middle compression soil, no shake reaction, tangent plane is more smooth, dry strength is big, folder lamelliform silty clay, silt accidentally accompany severely-weathered mud stone particle, and average mark passes through hammering several 9.0 and hits
2.
2Silt: yellow, the grey of brown red, brown red folder, wet slightly, close slightly state, the part is a loose condition (of surface), middle compression, tarnish, the shake of having slightly reaction, dry strength, toughness are lower, press from both sides homochromy flour sand and silty clay thin layer, average mark passes through hammering several 11.4 and hits, and this layer distributes very uneven in the venue, local location disappearance.
3, dash, lacustrine formation (Q
A1+1):
3.
1Silty clay: grey, grey, greyish black, the grey black look of greyish white, shallow orchid, wet, soft moulding-plastic, the part is plastic, middle compressibilty, accompany ribbon black organic matter, this layer skewness changes bigger, peat soil, mucky soil lens that the thick stream of local folder 10～15cm is moulded state, average mark passes through hammering several 5.6 and hits.
3.
2Silty clay: the yellow ash of red, the brown red folder of yellow folder ash, brown cervinus, wet slightly～wet, plastic, local for moulding firmly, middle compression, dry strength is bigger, the silt of close state and the cohesive soil of plastic state during folder is a small amount of, the rotten wood of accidental bulk and a small amount of breeze, average mark passes through hammering several 10.2 and hits.Accompany
Layer lens.
3.
3Silt: brown red, brown red folder ash, Dark grey, very wet～saturated, in close state, the part is close slightly state, middle compression, tarnish, the shake of having slightly reaction, dry strength, toughness are lower, local folder a little homochromy in the flour sand of close～dense state and the silty clay of plastic state, accidental folder grey black look organic and bulk is rotten wooden, varied in thickness is bigger, average mark passes through hammering several 14.2 and hits, and interlayer accompanies
Layer lens.
3.
4Flour sand: ash, light gray, pale yellow folder ash, yellow ash, local folder lime look, very wet～saturated, in close～closely knit, middle compression, press from both sides about 5% Φ 1cm and justify gravel and Φ 0.5cm quartz particles 13.0 rice and about 18.0 meters are located local location, local folder lamelliform fine sand, medium sand, idol accompanies the rotten wood of bulk, and this layer thickness is bigger, physico-mechanical properties is better, and average mark passes through hammering several 29.5 and hits.Accompany
Layer lens.
Clay: yellow ash, light gray folder yellow, wet slightly, soft moulding～plastic, in～high-compressibility, toughness is better, and dry strength is big, and local idol accompanies the peat soil of thin layer soft-plastic state, is lens and distributes.
4, eluvium (Q
E1):
4.
1Clay: lark, greyish white, reddish brown folder is yellow, and is wet slightly, moulds state firmly, low compressibility, tangent plane is smooth glossy, and dry strength is big.
4.
2The completely decomposed mud stone: bronzing, wet slightly, be the silty clay state, low compressibility, tangent plane is glossy, and No. 2068, No. 2074 holes and No. 2094 holes disclose.
5, basement rock (K
1M):
5.
1Severely-weathered mud stone: bronzing, wet slightly, structure is most of to be destroyed, and the core fragmentation is chunky shape, bottom for big block, and joint fissure is comparatively grown.
5.
2Middle weathering mud stone: bronzing, wet slightly, core is short cylinder, and joint fissure is grown.
A representative section data list is as follows in the 30m degree of depth:
1.2 underground water
During this prospecting on the occasion of autumn rain season of this area.The fish pond spreads all in planning to build the place according to investigations, next-door neighbour river, east side, place.The main supply mode of surface water is man-made irrigation supply, runoff supply and Atmospheric precipitation supply.
In the depth of exploration scope, all there is stable underground water to exist, initial water level buried depth 0.4-1.8 rice, fixed level is a 0.8-1.4 rice, and place underground water belongs to diving, and the little pressure-bearing property of tool, underground water are mainly composed and are stored in the relatively large silt of particle, flour sand layer.The result shows according to water test, and hydrochemical type is
Type water, the pH value of water are 6.7, the aggressivity CO of water
2Be 8.80 (mg/l), water is not had corrosivity to the reinforcing bar in concrete structure and the concrete structure, but the steel work that exposes is had weak erosive.
With the grand theater is example: slotting reinforcing cage technology behind the long spiral pore-forming guncreting is adopted in former design, can only do 2～3 piles in one day, and reinforcing cage transfers very difficultly, adjusts the granule concrete slump repeatedly, changes high-power vibrating hammer and does not still prove effective.Compressive pile is revised design, changes length of reinforcing cage 1/2 of former length into.Uplift pile (especially stake type 5) construction is same not in place down.So adopt the present invention to construct.
The basic skills of the present invention's construction is to adopt " stirring of long spiral and churning composite methods are constructed ", promptly adopt existing high-power mixing pile machine (as long helical stir stake machine) to stir into " cement-soil " stake (being cement mortar or plain concrete after condensing), or become " cement-soil " rotary churning pile (being cement mortar or plain concrete after condensing equally) with existing high-power churning ram machine construction, also can adopt existing long spiral to revolve to decide spray to stir and construct " cement-soil " (being cement mortar or plain concrete after condensing equally) stake.Especially can form the pile body (promptly cross sectional shape everywhere is identical) of a section form as shown in Figures 2 and 3 after adopting fixed spray, or can form Fig. 4 after adopting the segmentation gyration to spray surely～pile body (cross sectional shape that is each section pile body turns an angle) of a plurality of different cross sections shown in Figure 11.
Concrete construction technology is: at first three supplies and one leveling carried out at the scene, carries out fixed stake position successively according to common process then, and the rig Installation and Debugging, the rig location, boring (be drilled at the bottom of absolute altitude) is checked and accepted whole hole; Meanwhile carry out the high-pressure pump Installation and Debugging, connect the cement paste delivery pump pipe, the rig flexible pipe is communicated with pump line, adopt above-mentioned specific drilling tool to spray repeatedly to revolve, be sprayed onto design elevation surely, formed " cement-soil "; Adopt conveying device in " cement-soil " stake that forms, to insert concrete-steel twisted wire cage then, constitute pile, pile is checked and accepted, and steel strand are locked in reserved location to design elevation; Getting the raw materials ready of cooperating with above-mentioned technology comprises: cement, concrete-steel twisted wire etc. is marched into the arena, and does slurry and cooperates material retrial when, and agitator is prepared, and cement paste stirs (making cement test block), and concrete-steel twisted wire cage is made, and the cement paste that stirs is supplied with the cement paste delivery pump.
The main material that uses has reinforcing bar, steel strand, prestressing force locking anchor head, cement, flyash, accelerating admixture, early strength admixture etc.
The cement that uses can adopt Portland cement, portland slag cement or pulverized fuel ash cement etc.; Flyash has the low strength cement effect, improves the pumpability of slurry simultaneously; The accelerating admixture effect is to promote the cement paste rapid solidification, and improves its early strength.Add early strength admixture in case of necessity,, shorten time of setting to improve its early strength.
Claims (8)
1. the new method of part binding prestress resistance to plucking anti-floating stake of constructing is characterized in that, at layer of sand or sand-pebble layer, adopts specific drilling tool to drill down and up, and is pressed into cement paste with high-pressure pump simultaneously, and design elevation is revolved, is sprayed onto surely in spray repeatedly, forms cement earth pile; In this cement earth pile that forms, insert concrete-steel twisted wire cage then to design elevation, with ground tackle the steel strand of concrete-steel twisted wire cage are locked in reserved location afterwards; Be cement mortar or plain concrete after described cement earth pile condenses, constitute pile with concrete-steel twisted wire cage; Described specific drilling tool comprises that high-power mixing pile machine is used to stir into cylindrical cement earth pile, or the churning of high-power rotary churning pile machine becomes cylindrical cement earth pile, or adopts long-auger jet-grouting, sprays rig surely and stir into the cement earth pile that has lug.
2. the new method of construction part binding prestress resistance to plucking anti-floating according to claim 1 stake, it is characterized in that, described employing long-auger jet-grouting, fixed spray stir in the cement earth pile that has lug, form in the process of lug carrying out deciding spray, drilling tool does not rotate, and the cross sectional shape of the pile body of formation is all identical everywhere axis.
3. the new method of construction part binding prestress resistance to plucking anti-floating according to claim 1 stake, it is characterized in that, described employing long-auger jet-grouting, fixed spray stir in the cement earth pile that has lug, form in the process of lug carrying out deciding spray, drilling tool whenever keeps at a certain distance away and just rotates an angle, cross sectional shape each on axis of the pile body that forms is section inequality, differs described angle.
4. the new method of construction part binding prestress resistance to plucking anti-floating according to claim 1 stake is characterized in that, described high-power mixing pile machine is long helical stir stake machine.
5. the new method of construction part binding prestress resistance to plucking anti-floating according to claim 1 stake, it is characterized in that: adopt described high-power mixing pile machine with qualified cement paste and foundation soil or after drawing the hole loosening foundation soil stir into cement earth pile, be cement mortar or plain concrete after condensing.
6. the new method of construction part binding prestress resistance to plucking anti-floating according to claim 1 stake, it is characterized in that: adopt high-power rotary churning pile machine with qualified cement paste with foundation soil or after drawing the hole loosening foundation soil construct into the cement-soil rotary churning pile, be cement mortar or plain concrete after condensing.
7. the new method of construction part binding prestress resistance to plucking anti-floating according to claim 1 stake, it is characterized in that: loosening foundation soil stirs spray or is sprayed into cement earth pile surely employing large power long auger jet-grouting mixing pile machine with qualified cement paste and foundation soil or after drawing the hole, is cement mortar or plain concrete after condensing.
8. the new method of construction part binding prestress resistance to plucking anti-floating according to claim 1 stake is characterized in that: described pile can be realized the purpose of construction resistance to plucking anti-floating stake, the purpose of also can realize constructing compressive pile and slope protection pile.
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| CN2010102825509A CN101962953A (en) | 2010-09-14 | 2010-09-14 | New method for constructing part-bonding pre-stress uplift pile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311867A (en) * | 1995-05-18 | 1996-11-26 | Kensetsu Kiso Eng Co Ltd | Construction method for high stress-proof pile |
| CN2561820Y (en) * | 2002-08-09 | 2003-07-23 | 青岛市勘察测绘研究院 | Steel bar reinforced section-varied composite pile operation apparatus |
| CN2565870Y (en) * | 2002-08-08 | 2003-08-13 | 青岛市勘察测绘研究院 | Reinforced concrete cross-section-changeable composite pile |
| CN101029488A (en) * | 2007-04-12 | 2007-09-05 | 北京建材地质工程公司 | Partial adhered prestressed pile against drawing and floating and its construction |
| CN101255689A (en) * | 2008-03-12 | 2008-09-03 | 何世鸣 | Long helical spraying-rotary stirring soilcement purdah pile as well as construction method thereof |
-
2010
- 2010-09-14 CN CN2010102825509A patent/CN101962953A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08311867A (en) * | 1995-05-18 | 1996-11-26 | Kensetsu Kiso Eng Co Ltd | Construction method for high stress-proof pile |
| CN2565870Y (en) * | 2002-08-08 | 2003-08-13 | 青岛市勘察测绘研究院 | Reinforced concrete cross-section-changeable composite pile |
| CN2561820Y (en) * | 2002-08-09 | 2003-07-23 | 青岛市勘察测绘研究院 | Steel bar reinforced section-varied composite pile operation apparatus |
| CN101029488A (en) * | 2007-04-12 | 2007-09-05 | 北京建材地质工程公司 | Partial adhered prestressed pile against drawing and floating and its construction |
| CN101255689A (en) * | 2008-03-12 | 2008-09-03 | 何世鸣 | Long helical spraying-rotary stirring soilcement purdah pile as well as construction method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 杨玉明: "提高旋喷桩承载力的工程试验研究", 《山西建筑》, no. 2, 30 April 2000 (2000-04-30) * |
| 赵彩明等人: "高压旋喷技术在某日报社设备基础加固中的应用", 《岩土工程界》, vol. 7, no. 5, 31 May 2005 (2005-05-31) * |
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Application publication date: 20110202 |