CN203096751U

CN203096751U - Long-short combined plain concrete displacement pile composite foundation in soil-rock area

Info

Publication number: CN203096751U
Application number: CN 201220746991
Authority: CN
Inventors: 王成; 颜光辉; 章学良; 贾鹏; 陈展; 李可一; 康景文
Original assignee: China Southwest Architectural Design and Research Institute Co Ltd
Current assignee: China Southwest Architectural Design and Research Institute Co Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-07-31
Anticipated expiration: 2022-12-31

Abstract

A long-short combined plain concrete displacement pile composite foundation in a soil-rock area is composed of plain concrete piles which are different in length and are distributed in a cross mode. Short plain concrete piles and long plain concrete piles are arranged at equal intervals, and meanwhile macadam cushion layers are arranged at the tops of the plain concrete piles. The long-short combined plain concrete displacement pile composite foundation in the soil-rock area can use the long plain concrete piles and the short plain concrete piles to jointly process soft soil layers in different depths in the area. On the condition that the bearing capacity of the foundation is met, the purpose of controlling whole sedimentation of the foundation can be achieved by adjusting the lengths of the piles, the design of invalid long piles is prevented, the material utilization amount is reduced, unnecessary waste is reduced, and construction periods are shortened, and engineering cost is saved.

Description

Tu Yan place length combination plain concrete displacement pile composite foundation

Affiliated technical field

The utility model relates to a kind of the realm of building construction ground, specifically a kind of length combination plain concrete displacement pile composite foundation of handling Tu Yan place soft foundation.

Background technology

At present, extensively adopt plain concrete pile as the ground stabilization form at the realm of building construction, particularly the high speed passenger dedicated railway railway more than China speed per hour 300km/h has entered the Large scale construction stage, because of the high speed passenger dedicated railway railway track structure should have high reliability and high stability and high ride comfort, so require very high to the sedimentation and deformation of engineering foundation under the line.And China's soft foundation is commonplace, and when directly building engineering such as building, embankment on soft foundation, the sedimentation in later stage is difficult to meet the demands, and therefore, must carry out consolidation process to ground, with the uneven subsidence in solution engineering later stage.The plain concrete pile composite foundation is because of its high-bearing capacity that has, small deformation and compliance and good economic and social benefit have obtained development rapidly in recent years widely.At present widely-used plain concrete pile composite foundation solve the uneven subsidence of soft foundation, for reaching the requirement of superstructure load and distortion, present plain concrete pile composite foundation the time is all processed by demand the highest standard that ground meets design requirement in design and is designed, isometric equidistant placement plain concrete pile, the invalid stake that has formed part is long, both expend lot of materials, also increased construction period simultaneously, be unfavorable for reducing construction costs.

Summary of the invention

Handle the overproof problem of design that exists in order to solve existing ground, the utility model provides a kind of Tu Yan place length combination plain concrete displacement pile composite foundation, guaranteeing under the condition that bearing capacity of foundation soil satisfies, can improve the safety and the stability of building, reduced material usage simultaneously, significantly shorten the duration, reduced construction costs.

The technical scheme that its technical problem that solves the utility model adopts is: the rubble mattress layer by plain concrete pile and top constitutes jointly, include long plain concrete pile and short plain concrete pile in the plain concrete pile, and long plain concrete pile is arranged in a crossed manner with short plain concrete pile, equidistantly arrange with duration plain concrete pile and short plain concrete pile, and be provided with the thick rubble mattress layer of 20 ~ 30cm on the plain concrete pile top.Native rock stratum by different depth in long plain concrete pile and the common disposal field of short plain concrete pile, guaranteeing under the condition that bearing capacity of foundation soil satisfies, by adjusting the long purpose that reaches control ground bulk settling of stake, avoided invalid long stake design, reduced material usage, thereby reduce unnecessary waste, save construction period and construction costs.

The beneficial effects of the utility model are: not only can effectively solve the bearing capacity and the settlement issues of different depth weak soil layer, but also can avoid invalid long stake design, reduce material usage, save construction period and construction costs, product structure is simple, and easy construction is easily promoted the use of.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is present common plain concrete pile composite foundation vertical section structure schematic diagram.

Fig. 2 is a vertical section structure schematic diagram of the present utility model.

The long plain concrete pile of code description among the figure: 1-; 2-rubble mattress layer; The 3-shallow layer soft soil foundation; 4-deep layer soft rock foundation; The short plain concrete pile of 5-.

The specific embodiment

As shown in Figure 1, common plain concrete pile composite foundation all is equidistantly to be arranged on isometric plain concrete pile (1) in the soft foundation at present, be provided with rubble mattress layer (2) at the top of plain concrete pile, utilize plain concrete pile and shallow-layer soft foundation (3) and deep layer soft rock foundation (4) to bear upper load jointly, effectively prevent the differential settlement of superstructure.Because exist in this kind scheme a lot of invalid stakes long, concrete use amount is also bigger, so construction period and construction costs are all higher.

As shown in Figure 2, long plain concrete pile (1) and short plain concrete pile (5) intersect, the equidistant setting, and are provided with rubble mattress layer (2) at the top of plain concrete pile.In the utility model, utilize long plain concrete pile and short plain concrete pile to handle shallow layer soft soil foundation (3) and deep layer soft rock foundation (4) jointly, reach ground stabilization and prevent that the purpose of differential settlement from appearring in soft foundation.This kind Tu Yan place length combination plain concrete displacement pile composite foundation can effectively reduce the construction period of concrete use amount and plain concrete pile, saves construction costs.

Claims

1. a Tu Yan place length combination plain concrete is replaced pile composite foundation, rubble mattress layer by plain concrete pile and top constitutes jointly, it is characterized in that: include long plain concrete pile and short plain concrete pile in the plain concrete pile, and long plain concrete pile is arranged in a crossed manner with short plain concrete pile.

2. a kind of Tu Yan according to claim 1 place length combination plain concrete displacement pile composite foundation, it is characterized in that: long plain concrete pile is equidistantly arranged with short plain concrete pile.

3. a kind of Tu Yan according to claim 1 place length combination plain concrete displacement pile composite foundation is characterized in that: be provided with the thick rubble mattress layer of 20 ~ 30cm on the plain concrete pile top.