CN201801858U - Long spiral rotary and fixed jetting and mixing part-bonding pre-stress anti-uplift and anti-floating pile - Google Patents
Long spiral rotary and fixed jetting and mixing part-bonding pre-stress anti-uplift and anti-floating pile Download PDFInfo
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- CN201801858U CN201801858U CN2010205297736U CN201020529773U CN201801858U CN 201801858 U CN201801858 U CN 201801858U CN 2010205297736 U CN2010205297736 U CN 2010205297736U CN 201020529773 U CN201020529773 U CN 201020529773U CN 201801858 U CN201801858 U CN 201801858U
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Abstract
The utility model discloses a long spiral rotary and fixed jetting and mixing part-bonding pre-stress anti-uplift and anti-floating pile, which is characterized in that a pile body comprises a cylindrical pile core and lugs which form an integral structure; the quantity of the lugs is two or four; and the lugs are distributed along the peripheral surface of the pile core. The pile body comprises soil cement and a reinforcement cage or a reinforcing bar-steel strand cage which is inserted into the soil cement. The pile has the advantages that as the soil cement and original foundation soil or foundation soil conducted by hole guiding are mixed and jetted to form the soil cement pile body, the reinforcement cage or the reinforcing bar-steel strand cage are easy to be inserted. Due to the projecting portion of the section of the pile body, the junction surface between the pile body and surrounding soil horizon is greatly increased, and due to the structure mode of a plurality of segmented gyration sections, the capabilities the uplift resistance and floating resistance is further improved, so that compared with a traditional pile body, the bearing capacity of the pile body is greatly improved, and the cost is greatly reduced. The pile can be widely applicable to strata to which conventional methods can not be applicable, such as dense sand layer, sand and cobble and the like.
Description
Technical field
This is suitable for the novel pile that belongs in the building foundation construction, and particularly a kind of long spiral revolves decides the binding prestress resistance to plucking anti-floating stake of spray mixing part.Be used as the stake of resistance to plucking anti-floating, also can be used as compressive pile, be particularly useful for the resistance to plucking anti-floating stake of layer of sand or sand-pebble layer.
Background technology
The advantage of conventional part binding prestress resistance to plucking anti-floating stake: 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, very fine and close, 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.Save cost.
Summary of the invention
In order to solve above-mentioned layer of sand and the sand-pebble layer concrete perfusion difficulty of running into, reinforcing bar-more difficult problem of steel strand cage is inserted in the back, simultaneously in order to bring into play the potentiality of revolving the huge side friction of stake of deciding the formation of spray paddling process, the present invention has used " composite combined thinking method ", adopt long spiral and stirring and churning to spray composite methods construction uplift pile surely, promptly adopt long spiral to revolve to decide spray to stir to construct " cement-soil " (being cement mortar or plain concrete after condensing).
The technical solution of the utility model is: its pile body is made of columniform stake core and lug, and the two is structure as a whole, and lug is that the outer peripheral faces of two or four edge stake cores are uniform.
Described lug is on the straight line parallel with the axis of pile body.
Described pile body is divided into several sections, and the lug on the pile body of each section reverses an angle mutually.
Described pile body is made of cement-soil and the reinforcing cage or the reinforcing bar-steel strand cage that insert in it.
The utility model has the advantages that: 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.The projection in pile body cross section increases and the mating face of soil layer on every side greatly, and the form of structure in a plurality of cross sections of segmentation gyration has further increased its resistance to plucking anti-floating ability, makes the more traditional pile body of its its bearing capacity improve greatly, and cost descends greatly.Can be applied to the stake of resistance to plucking anti-floating, also can be used for compressive pile and slope protection pile, and 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 cage 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, speed of application improves greatly, and quality is guaranteed, and has shown its great superiority.
Description of drawings
Fig. 1 is the general structure schematic diagram of first embodiment of the present utility model;
Fig. 2 is the D-D sectional drawing of Fig. 1;
Fig. 3 is the general structure schematic diagram of second embodiment of the present utility model;
Fig. 4 is the E-E sectional drawing of Fig. 3;
Fig. 5 is the F-F sectional drawing of Fig. 3;
Fig. 6 is the G-G sectional drawing of Fig. 3;
Fig. 7 is the general structure schematic diagram of the 3rd embodiment of the present utility model;
Fig. 8 is the A-A sectional drawing of Fig. 7;
Fig. 9 is the B-B sectional drawing of Fig. 7;
Figure 10 is the C-C sectional drawing of Fig. 7.
The specific embodiment
Referring to Fig. 1～Figure 10, basic structure of the present utility model 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 two or four outer peripheral faces along a core 1.
First embodiment illustrated in figures 1 and 2 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. 3～shown in Figure 6 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. 7～shown in Figure 10 is also formed by three sections, and forming process is identical with second embodiment.
Pile body of the present utility model is that cement paste and former foundation soil stir or draw foundation soil behind the hole and stir to spray and form " cement-soil " pile body, and the cement that cement paste adopts can be 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.After forming " cement-soil " pile body, in this " cement-soil " pile body, insert reinforcing cage or reinforcing bar-steel strand cage.
Claims (4)
1. a long spiral revolves and decides the binding prestress resistance to plucking anti-floating stake of spray mixing part, it is characterized in that, its pile body is made of columniform stake core and lug, and the two is structure as a whole, and lug is that the outer peripheral faces of two or four edge stake cores are uniform.
2. long spiral according to claim 1 revolves decides the binding prestress resistance to plucking anti-floating stake of spray mixing part, it is characterized in that described lug is on the straight line parallel with the axis of pile body.
3. long spiral according to claim 1 revolves decides the binding prestress resistance to plucking anti-floating stake of spray mixing part, it is characterized in that described pile body is divided into several sections, and the lug on the pile body of each section reverses an angle mutually.
4. long spiral according to claim 1 revolves decides the binding prestress resistance to plucking anti-floating stake of spray mixing part, it is characterized in that, described pile body is made of cement-soil and the reinforcing cage or the reinforcing bar-steel strand cage that insert in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205297736U CN201801858U (en) | 2010-09-14 | 2010-09-14 | Long spiral rotary and fixed jetting and mixing part-bonding pre-stress anti-uplift and anti-floating pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205297736U CN201801858U (en) | 2010-09-14 | 2010-09-14 | Long spiral rotary and fixed jetting and mixing part-bonding pre-stress anti-uplift and anti-floating pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201801858U true CN201801858U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205297736U Expired - Lifetime CN201801858U (en) | 2010-09-14 | 2010-09-14 | Long spiral rotary and fixed jetting and mixing part-bonding pre-stress anti-uplift and anti-floating pile |
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| Country | Link |
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| CN (1) | CN201801858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239561A (en) * | 2015-09-01 | 2016-01-13 | 北京建材地质工程公司 | Long spiral mix spray pre-grouting press concrete post-inserted steel reinforcement cage cast-in-place pile construction process |
-
2010
- 2010-09-14 CN CN2010205297736U patent/CN201801858U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239561A (en) * | 2015-09-01 | 2016-01-13 | 北京建材地质工程公司 | Long spiral mix spray pre-grouting press concrete post-inserted steel reinforcement cage cast-in-place pile construction process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100102 Beijing city Chaoyang District Dongzhimen drainage Patentee after: Beijing Construction Material and Geological Engineering Co. Patentee after: Co., Ltd of SINOMA Geological Engineering Survey Institute Patentee after: Beijing Urban Construction Science and Technology Promotion Association Address before: 100102, Beijing, Wangjing, Chaoyang District West Road, No. 50-1, volume stone world building, block A, 4 Patentee before: Beijing Construction Material and Geological Engineering Co. Patentee before: SINOMA Geological Engineering Exploration Academy Patentee before: Beijing Urban Construction Science and Technology Promotion Association |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Geotechnical Engineering Association Assignor: Beijing building materials geological engineering company|Sinoma Geological Engineering Research Institute|Beijing urban construction science and Technology Promotion Association Contract record no.: 2015990000882 Denomination of utility model: Long spiral rotary and fixed jetting and mixing part-bonding pre-stress anti-uplift and anti-floating pile Granted publication date: 20110420 License type: Exclusive License Record date: 20151203 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |