CN1730839A

CN1730839A - Soil-cement pile with core and diameter enlarged extension section

Info

Publication number: CN1730839A
Application number: CN 200410040401
Authority: CN
Inventors: 曾毅学
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-07
Filing date: 2004-08-07
Publication date: 2006-02-08

Abstract

The cement soil pile expanding pile includes cement soil pile body and axial core rod and features diameter expanding sections with increased cross section area in pile end and/or pile body. The expanded sections may be supported or suspended inside the soil layer with best soil quality to increase pile end resistance and side friction resistance, raise the pile bearing capacity, avoid pile deposition, control deformation of foundation and ensure the safety of building. The present invention has wide application range.

Description

Cement-soil adds the core hole-enlargement pile

Technical field

The present invention relates to a kind of cement-soil and add the core stake, belong to architectural design and technical field of construction.

Background technology

Good and the bad reliability and the safety that is directly connected to above ground structure of ground geological conditions, therefore, how to effectively utilize all kinds of foundation pile of squeezing in the ground and adapt to different geological conditionss, improving and to improve the bearing capacity of foundation pile, the safety of guaranteeing building is that building trade is badly in need of the important topic that solves for a long time.The valency that generally adopts is low at present, matter is high adds core or stiffened soil-cement composite pile, though overcome the building cost height that preformed pile price height is brought, and low easily being damaged by pressure and waited deficiency of bringing of deep-mixed pile intensity in underground generation distortion, but can not be with the variation of geology condition, change the foothold or the strong point of stake, make the engineering accommodation that adds core or stiffened soil-cement composite pile be subjected to very big restriction, especially comparatively complicated at geological conditions, garden gravel bed (good soil property layer) bed thickness deficiency or garden gravel bed are for being interrupted under the situation about distributing, be difficult to guarantee or improve bearing capacity of single pile, be difficult to guarantee that stake can sedimentation.Therefore, be necessary prior art is improved.

Summary of the invention

The objective of the invention is to overcome the deficiency of prior art, provide a kind of and can add the core hole-enlargement pile with the cement-soil of change in stake end or expansion stake footpath, the suitable position of pile body of geology condition, make the stake support or be suspended on the good garden gravel bed of geology, greatly improve bearing capacity of single pile.

The present invention realizes by following technical proposal: a kind of cement-soil adds the core hole-enlargement pile, comprises cement soil pile, is located at the axial core body in the pile body, it is characterized in that at the stake end of pile body or/and be provided with diameter on the pile body or sectional area greater than the expanding section of pile body.

Described expanding section is arranged on pile body stake end or/and a pile body direction or a plurality of direction radially, its section is for oval or be trilobal or be five leaf or other shapes, so that according to concrete geological condition expanding section is supported or is suspended on the gravel bed of garden, realize higher bearing capacity of single pile.

Expanding section on the described pile body is provided with vertically at interval, perhaps is provided with continuously, to adapt to different geological conditions, reaches preferable bearing capacity of single pile.

Described stake core section is made as one or more in cross or I-shaped or herringbone or T-shaped or the star, perhaps be in hollow, solid side's body or hollow, solid cylinder or hollow, solid triangle body or hollow, the solid gengon one or more, be used to improve the vertical bearing capacity of stake, simultaneously to underground building or pipeline etc. have no effect on every side.

The present invention compared with prior art has following advantage and effect: according to such scheme, section is amassed increase to 80%, girth is increased to 43%, and can be according to the geological conditions and the needs of job site, to the stake end or/and pile body carry out axially or radial expansion, make the expansion position directly support or be suspended on the soil property layer best in the ground, end resistance and stake side skin friction had both been increased, bearing capacity of single pile is greatly improved, simultaneously can effectively prevent the pile body sedimentation again, the control foundation deformation, guarantee building safety, fundamentally overcome prior art, can not only support by the stake end because of many deficiencies that pile body only brings for single cylinder, and can also be aided with pile body and support or hang, the engineering accommodation of deep-mixed pile is greatly improved, and the present invention has easy construction in addition, fast, cost is except that the Master Cost that increases expanding section, not increasing any expense, is that a kind of cost is low therefore, the measured desirable cement-soil of matter adds the core hole-enlargement pile.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the application example figure of the utility model;

Fig. 3 is the A-A view of Fig. 1;

Fig. 4 is the B-B view of Fig. 1;

Fig. 5-Fig. 8 is respectively the different section structure chart of pile body expanding section.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further, is not limited thereto but hold within the utility model.

Among the figure, 1 is the deep-mixed pile pile body, 2 for axially placing the core body in it, its section is a rectangle, 3 is the radial expansion section that is provided with at interval on the pile body, its section ovalize, this expanding section supports or is suspended on soil property preferably on the garden gravel bed a, and 4 be the radial expansion section of a position, end, and its section is trilobal, be supported on soil property preferably on the garden gravel bed a, 5 is the triangle core body in it, and 6 for section is the pile body or the stake end expanding section of quatrefoil, and 7 be its interior circular core body, 8 are five leaf pile bodies or stake end expanding sections for section, 9 is the pentagon core body in it, and 10 for section is the pile body or the stake end expanding section of trilobal, and 11 be its interior star core body, 12 for section is the pile body or the stake end expanding section of quatrefoil, and 13 be its interior triangle core body.

Claims

1, a kind of cement-soil adds the core hole-enlargement pile, comprises cement soil pile, is located at the axial core body in the pile body, it is characterized in that at the stake end of pile body or/and pile body is provided with diameter or the sectional area expanding section greater than pile body.

2, hole-enlargement pile according to claim 1, it is characterized in that stake end that described expanding section is arranged on pile body or/and a pile body direction or a plurality of direction radially, its section is for oval or be two leaf or be trilobal or be five leaf or be leafy shape.

3, hole-enlargement pile according to claim 1 is characterized in that the expanding section on the described pile body is provided with vertically at interval, perhaps is provided with continuously.