CN103603356A - Annular post-grouting device for lower pile tips under sandstone geological conditions - Google Patents
Annular post-grouting device for lower pile tips under sandstone geological conditions Download PDFInfo
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- CN103603356A CN103603356A CN201310584795.0A CN201310584795A CN103603356A CN 103603356 A CN103603356 A CN 103603356A CN 201310584795 A CN201310584795 A CN 201310584795A CN 103603356 A CN103603356 A CN 103603356A
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Abstract
The invention relates to an annular post-grouting device for lower pile tips under sandstone geological conditions. The annular post-grouting device comprises a grouting device and grout. The annular post-grouting device is characterized in that the grouting device is an annular galvanized iron pipe, the outer diameter of the annular galvanized iron pipe is slightly smaller than the inner diameter of cast-in-place pile reinforcement cage, six groups of grouting holes which are annularly uniformly distributed are formed in the annular galvanized iron pipe, opening directions of four groups of grouting holes face the outside of a circle, opening directions of two groups of symmetrical grouting holes face the inside of the circle, and the grouting holes in each group are uniformly distributed on the annular galvanized iron pipe to form a quincunx. The annular post-grouting device has the advantages that the problem that a conventional grouting device cannot be inserted into hard strata under sandstone geological conditions can be solved, the grout can be uniformly distributed at the pile tips, effects of grouting partial pile sides and uniformly distributing the grout on the partial pile sides can be realized, the post-grouting construction efficiency for the pile tips under the red sandstone geological conditions can be improved, and the post-grouting quality and a post-grouting success rate can be guaranteed; the annular post-grouting device for the lower pile tips under the sandstone geological conditions can effectively adapt to the sandstone geological conditions, is simple in structure and brings convenience for construction.
Description
Technical field
The present invention relates to the slurry casting machine that a kind of building operations is used, especially a kind of for pile-end post-grouting annular slurry casting machine under sandstone geological conditions.
Background technology
Lanzhou engineering is the landmark of Lanzhou and even whole the Northwest, main building height 250m ，Wei the Northwest the first high building.Engineering is positioned at busiest section, center, city, and the contiguous major urban arterial highway of periphery and many buildings residence building, have many municipal pipelines under road, and surrounding enviroment protection is had relatively high expectations.Project first phase foundation ditch area is about 20100m2, and foundation ditch periphery linear meter is 558m, and underground four layers, cutting depth is 23.6m the most deeply, is the deep foundation ditch in whole the Northwest.This project sandstone distribution whole audience ground is not exposed when carrying out geotechnical investigation, and the pile end of this engineering is also among this sand layers.
This engineering is the Northwest's the first high building, the darkest foundation ditch in foundation ditch Ye Shi the Northwest, therefore the load that is delivered to stand column pile or is delivered on engineering pile will be all great, accordingly the bearing capacity of stake etc. is had higher requirement, but conventional pile capacity is limited, in the underground structure of many super highrise buildings, easily adopt hundreds and thousands of piles could meet load bearing requirements, can cause the cost of pile foundation in whole underground structure, to occupy very large ratio, the problems such as construction investment, environment, duration are quite outstanding.Based on this, carry out the research and development of castinplace pile grouting behind shaft or drift lining and just seem necessary, be necessary stake end and a stake side soil body are carried out fixed, to increase bearing capacity of single pile and to reduce the distortion sedimentation etc. of stake.This engineering geological conditions is sandstone, intact sandstone formation is hard, the pile-end post-grouting slurry casting machine that conventional soft clay area is used cannot insert, under the geological conditions of existing rock stratum, grouting behind shaft or drift lining slurry casting machine is mainly to lay particular emphasis in underground continuous wall bottom post-grouting, although can use for circular grout pile end follow-up grouting, but cannot guarantee that pile end grouting amount is uniformly distributed, may cause bearing capacity of pile tip inhomogeneous, the bad control of grouting amount also easily causes the situations such as injecting paste material waste to occur.
At present, stake end stake side slip casting experience and corresponding equipment under Red Sandstone geological condition all have no precedent to go by, for this reason, this patent relies on the object of construction production under domestic first Red Sandstone geological conditions, the concrete condition of incorporation engineering, and according to practice of construction effect, conventional slurry casting machine is carried out to innovation transformation, formed this patent invention.
Summary of the invention
The present invention will provide pile-end post-grouting annular slurry casting machine under a kind of sandstone geological conditions, for solving the problem that cannot insert because of the hard conventional slurry casting machine in stratum under sandstone geological conditions, can make pile end grouting be more evenly distributed, and can play part stake side slip casting and equally distributed effect, the pile-end post-grouting efficiency of construction of raising under Red Sandstone geological conditions, the quality success rate of assurance grouting behind shaft or drift lining.This slurry casting machine can adapt to sandstone geological conditions, simple structure, easy construction better.
For achieving the above object, the technical solution used in the present invention is as follows:
Pile-end post-grouting annular slurry casting machine under a kind of sandstone geological conditions, comprise slurry casting machine, slip casting, be characterized in: slurry casting machine is an annular galvanized iron pipe, annular galvanized iron pipe external diameter is slightly less than filling pile cage of reinforcement internal diameter, on annular galvanized iron pipe, along hoop, be evenly equipped with six groups of injected holes, wherein four groups of injected hole perforate directions are outside circle, and the injected hole perforate of two groups of symmetries is in circle, and every group of injected hole becomes quincunx and be evenly arranged on annular galvanized iron pipe.
Every group of injected hole place on annular galvanized iron pipe is enclosed with the rubber that forms one way valve.On annular galvanized iron pipe, be symmetrical arranged two tube connectors, two tube connectors are connected with symmetrically arranged two Grouting Pipe of every pile.
Grouting Pipe colligation, on filling pile cage of reinforcement, and is fixed with the main muscle of reinforcing cage, and Grouting Pipe upper end is provided with jacket-type internal thread plug.Annular slurry casting machine is arranged on apart from 50cm place at the bottom of reinforcing cage.
The invention has the beneficial effects as follows:
The present invention can solve the problem that cannot insert because of the hard conventional slurry casting machine in stratum under sandstone geological conditions, without inserting stake end bottom soil (rock) layer, can complete mortar depositing construction, can make pile end grouting be more evenly distributed, and can play part stake side slip casting and equally distributed effect, the pile-end post-grouting efficiency of construction of raising under sandstone geological conditions, the quality success rate of assurance grouting behind shaft or drift lining.The invention provides pile-end post-grouting annular slurry casting machine under a kind of sandstone geological conditions, can adapt to better sandstone geological conditions, simple structure, easy construction.
Accompanying drawing explanation
Fig. 1 is annular slurry casting machine front view of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is along the sectional view of A-A in Fig. 2;
Fig. 4 is annular slurry casting machine scheme of installation of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1 to Figure 3, under a kind of sandstone geological conditions, pile-end post-grouting annular slurry casting machine, comprises tube connector 1, slurry casting machine 2, rubber 3, injected hole 4, Grouting Pipe 5, internal thread plug 6.
Slurry casting machine is an annular galvanized iron pipe, annular galvanized iron pipe external diameter is more smaller than filling pile cage of reinforcement internal diameter, on annular galvanized iron pipe, have injected hole 4, injected hole 4 is equidistantly arranged six places at hoop with 60 ° of angles, wherein everywhere injected hole 4 perforate directions outside circle, injected hole 4 perforates of two place's symmetries are in circle, and 4 one-tenth quincunx being evenly arranged on annular galvanized iron pipe of every place injected hole, are uniformly distributed in the circular stake stake of assurance end and more than stake end part stake side slip casting with this.
Injected hole 4 position of opening parcel rubbers 3 on annular galvanized iron pipe make it form check valve-type, keep the sealing of injected hole 4, prevent in slurry reflux return pipe.On annular slurry casting machine 2, be symmetrical arranged two tube connectors 1, tube connector 1 material is galvanized iron pipe, and every pile is symmetrical arranged two Grouting Pipe 5, and annular slurry casting machine 2 is connected with two Grouting Pipe 5 by two tube connectors 1.
As shown in Figure 4, Grouting Pipe 5 colligations, on filling pile cage of reinforcement, and are fixed with the main muscle of reinforcing cage, transfer with reinforcing cage integral body, and Grouting Pipe 5 upper ends adopt jacket-type internal thread plugs 6, and annular slurry casting machine 2 exceeds 50cm at the bottom of reinforcing cage.
Embodiment:
Lanzhou engineering is the landmark of Lanzhou and even whole the Northwest, main building height 250m ，Wei the Northwest the first high building, and cutting depth is the deep foundation ditch in 23.6m ，Yi Wei the Northwest the most deeply.This project sandstone distribution whole audience ground is not exposed when carrying out geotechnical investigation, and the pile end absolute altitude of this engineering is positioned among sand layers.
Two Grouting Pipe of elongated installation on every pile, bottom connects the present invention's annular slurry casting machine, by engineering practice, prove, under sandstone geological conditions of the present invention, pile-end post-grouting annular slurry casting machine has well embodied the feature of simple structure, easy construction, in whole work progress, slip casting success rate reaches 100%, the grouting quality of every pile all reaches designing requirement, has greatly improved efficiency of construction, has guaranteed that pile foundation engineering fulfils ahead of schedule on schedule.
Claims (5)
1. pile-end post-grouting annular slurry casting machine under a sandstone geological conditions, comprise slurry casting machine (2), injected hole (4), it is characterized in that: described slurry casting machine (2) is an annular galvanized iron pipe, annular galvanized iron pipe external diameter is slightly less than filling pile cage of reinforcement internal diameter, on annular galvanized iron pipe, along hoop, be evenly equipped with six groups of injected holes (4), wherein four groups of injected holes (4) perforate direction is outside circle, the injected hole of two groups of symmetries (4) perforate is in circle, and every group of injected hole (4) becomes quincunx and be evenly arranged on annular galvanized iron pipe.
2. pile-end post-grouting annular slurry casting machine under sandstone geological conditions according to claim 1, is characterized in that: the every group of injected hole (4) on described annular galvanized iron pipe locates to be enclosed with the rubber (3) that forms one way valve.
3. pile-end post-grouting annular slurry casting machine under sandstone geological conditions according to claim 1, it is characterized in that: on described annular galvanized iron pipe, be symmetrical arranged two tube connectors (1), two tube connectors (1) are connected with symmetrically arranged two Grouting Pipe of every pile (5).
4. pile-end post-grouting annular slurry casting machine under sandstone geological conditions according to claim 3, it is characterized in that: described Grouting Pipe (5) colligation is on filling pile cage of reinforcement, and fix with the main muscle of reinforcing cage, Grouting Pipe (5) upper end is provided with jacket-type internal thread plug (6).
5. pile-end post-grouting annular slurry casting machine under sandstone geological conditions according to claim 1 and 2, is characterized in that: described annular slurry casting machine is arranged on apart from 50cm place at the bottom of reinforcing cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310584795.0A CN103603356A (en) | 2013-11-20 | 2013-11-20 | Annular post-grouting device for lower pile tips under sandstone geological conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310584795.0A CN103603356A (en) | 2013-11-20 | 2013-11-20 | Annular post-grouting device for lower pile tips under sandstone geological conditions |
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| CN103603356A true CN103603356A (en) | 2014-02-26 |
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| CN201310584795.0A Pending CN103603356A (en) | 2013-11-20 | 2013-11-20 | Annular post-grouting device for lower pile tips under sandstone geological conditions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895086A (en) * | 2015-05-04 | 2015-09-09 | 北京市勘察设计研究院有限公司 | Manual grouting layer method pile toe three-dimensional post-pressure grouting structure and pouring method |
| CN107687171A (en) * | 2017-09-15 | 2018-02-13 | 中建三局第建设工程有限责任公司 | Diaphram wall double pump post-grouting device and construction method |
| CN109268018A (en) * | 2018-09-27 | 2019-01-25 | 中铁十八局集团有限公司 | The device and method of synchronous thaw settlement grouting when a kind of defrosting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690109A (en) * | 1970-03-16 | 1972-09-12 | Lee A Turzillo | Method and means for producing pile or like structural columns in situ |
| CN102587358A (en) * | 2012-03-27 | 2012-07-18 | 河海大学 | Technology of high polymer material post-grouting squeezed cast-in-place pile |
| CN103184737A (en) * | 2011-12-28 | 2013-07-03 | 上海市基础工程有限公司 | Grouting machine for post grouting under embedded rock geological condition |
-
2013
- 2013-11-20 CN CN201310584795.0A patent/CN103603356A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690109A (en) * | 1970-03-16 | 1972-09-12 | Lee A Turzillo | Method and means for producing pile or like structural columns in situ |
| CN103184737A (en) * | 2011-12-28 | 2013-07-03 | 上海市基础工程有限公司 | Grouting machine for post grouting under embedded rock geological condition |
| CN102587358A (en) * | 2012-03-27 | 2012-07-18 | 河海大学 | Technology of high polymer material post-grouting squeezed cast-in-place pile |
Non-Patent Citations (1)
| Title |
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| 王卫东等: "桩侧后注浆抗拔桩技术的研究与应用", 《岩土工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895086A (en) * | 2015-05-04 | 2015-09-09 | 北京市勘察设计研究院有限公司 | Manual grouting layer method pile toe three-dimensional post-pressure grouting structure and pouring method |
| CN107687171A (en) * | 2017-09-15 | 2018-02-13 | 中建三局第建设工程有限责任公司 | Diaphram wall double pump post-grouting device and construction method |
| CN109268018A (en) * | 2018-09-27 | 2019-01-25 | 中铁十八局集团有限公司 | The device and method of synchronous thaw settlement grouting when a kind of defrosting |
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Owner name: GANSU TIANHONG JINYUN CO., LTD. Effective date: 20141229 |
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Effective date of registration: 20141229 Address after: 200433 Yangpu District, Shanghai Star Road, No. 231 Applicant after: Shanghai Foundation Engineering Group Co., Ltd. Applicant after: Gansu Tianhong Jinyun Co., Ltd. Address before: 200433 Yangpu District, Shanghai Star Road, No. 231 Applicant before: Shanghai Foundation Engineering Group Co., Ltd. |
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Application publication date: 20140226 |