CN102912805A

CN102912805A - Cement mixing pile structure for side slope solidification

Info

Publication number: CN102912805A
Application number: CN2012104776830A
Authority: CN
Inventors: 殷德顺; 周玄机; 王保田
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2013-02-06
Anticipated expiration: 2032-11-22
Also published as: CN102912805B

Abstract

The invention discloses a cement mixing pile structure for side slope solidification, comprising first continuous walls, second continuous walls and third continuous walls, wherein the first continuous walls are cement mixing pile continuous walls and are arranged at intervals along the direction of a side slope; the second continuous walls are also cement mixing pile continuous walls and arranged between two adjacent first continuous walls; the second continuous walls are arches which are convex to the top of the slope; and the third continuous walls are chemical churning pile continuous walls which are arranged at the bottom of the side slope and integrally connected with the lower ends of the first continuous wall. Compared with the prior art, the cement mixing pile structure has the advantage that the first, second and third continuous walls are organically connected into a whole and soft soil is enclosed in the structure formed by the first and second continuous walls so that the deformation of the soil along the direction of the slope is effectively decreased.

Description

The cement mixing pilework that is used for slope reinforcement

Technical field

The present invention relates to civil engineering, the technical fields such as water conservancy are particularly useful for the soft soil slope ground and process.

Background technology

Cement mixing pile is comparatively common in the engineering of soft soil foundation, uses very extensive.It is by special mixing pile machine the curing compound such as cement and foundation soil to be forced to stir on the spot to form cement earth pile, is used for strengthening soft foundation, strengthens the slide ability of side slope.

But, in the design of cement mixing pile, must take into full account the supporting capacity of stake and foundation soil, make engineering design and construction costs aspect all be tending towards reasonable.Mostly the cement mixing pile of at present slope reinforcement employing is quincuncial arrangement.In the quincuncial arrangement cement mixing pile, every pile all isolates, and not interaction between stake and the stake does not produce structure effect, is similar to " the bean curd contact pin " situation.Therefore, when the reinforcing soft soil side slope, the cement mixing pile foundation of quincuncial arrangement still easily produces larger horizontal distortion.

In view of above reason, be necessary that in the situation that identical replacement ratio the arrangement form of innovation cement mixing pile increases stake and a stake interaction, the distortion of being reinforced weak soil to reduce.

Summary of the invention

Technical problem to be solved by this invention be for the cement mixing pile quincuncial arrangement deficiency, propose a kind of novel cement mixing pile arrangement form, thereby more be conducive to the stable of soft soil slope.

The following technical scheme of the present invention:

A kind of cement mixing pilework for slope reinforcement is characterized in that: comprise the first diaphragm wall, the second diaphragm wall and the 3rd diaphragm wall, described the first diaphragm wall is the cement mixing pile diaphragm wall, and the first diaphragm wall moves towards the interval setting along side slope; Described the second diaphragm wall also is the cement mixing pile diaphragm wall, and this second diaphragm wall is arranged between two adjacent the first diaphragm walls, and described the second diaphragm wall is shaped as arch and domedly pushes up to the slope; Described the 3rd diaphragm wall is the rotary churning pile diaphragm wall, and this rotary churning pile diaphragm wall is arranged on the sloping end of side slope and connects into an integral body with described the first diaphragm wall lower end.

The present invention is interconnected to form structure between the first cement mixing pile diaphragm wall, the second arch cement mixing pile diaphragm wall (laterally) and the third high intensity rotary churning pile diaphragm wall (laterally) of side slope trend.Use this cement mixing pile arrangement form can solve existing ground process in the situation of quincunx " the bean curd contact pin " that lays out pile, mould in the ground of state effect at stream especially more obvious.

Compared with prior art, the invention has the beneficial effects as follows:

1. in cement mixing pile of the present invention is arranged, the first diaphragm wall, the second diaphragm wall and the 3rd diaphragm wall three be organic to connect into an integral body, weak soil is closed in the structure of the first diaphragm wall and the formation of the second diaphragm wall, thereby has effectively reduced the distortion along slope aspect of the soil body.

2. because the existence of the second diaphragm wall arch, make and form mutual squeezing action between the diaphragm wall, the deformation force along slope aspect of the soil body acts directly on the arch of the second diaphragm wall, then be delivered on the first diaphragm wall, again because the first diaphragm wall lower end is the 3rd rotary churning pile diaphragm wall, so it is stressed to have formed an integral body, more be conducive to the safety of whole ruggedized construction.

3. soft foundation acts on the power on the cement mixing pile, and the structure that forms by cement mixing pile is delivered on the high-pressure rotary jet grouting pile, more is conducive to bring into play the high-pressure rotary jet grouting pile effect, also is conducive to security control.

Description of drawings

Fig. 1 is that slope reinforcement structure of the present invention is arranged schematic diagram.

Fig. 2 is ruggedized construction phantom drawing of the present invention.

Wherein: 1, the first diaphragm wall, the 2, second diaphragm wall, the 3, the 3rd diaphragm wall, 4, sloping bottom surface, 5, sloping end face.

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is elaborated:

As shown in Figure 1, the agitation pile structure of slope reinforcement of the present invention, comprise cement mixing pile the first diaphragm wall 1 and cement mixing pile the second diaphragm wall 2, wherein the first diaphragm wall 1 is pushed up to sloping bottom application worker by the slope along domatic trend, construction the second diaphragm wall 2 between adjacent two first diaphragm walls 1, wherein the second diaphragm wall 2 be shaped as arch, the domed of arch pushes up to the slope, spacing between the sagitta of the second diaphragm wall 2 and the first diaphragm wall 1 designs according to concrete side slope geological conditions.Adopting the 3rd diaphragm wall 3 in the lower end of the first diaphragm wall 1 is that the rotary churning pile diaphragm wall connects, and makes the first diaphragm wall, the second diaphragm wall and the 3rd diaphragm wall become an organic whole.

The present invention's the second diaphragm wall is measured the stake position that each arch stake is made in setting-out according to the shape of the arch stake that designs, and paints the method for drawing a circle and locating with slotting bamboo chip plate, ground.

According to setting-out stake position construct, the cement mixing pile driving construction is as follows:

(1) implements to stir for the first time behind the agitation pile location;

(2) promote mixer, stir on the limit, becomes whitewashing;

(3) implement to stir for the second time;

(4) again promote mixer, stir on the limit, becomes whitewashing;

(5) stir pile.

Want accurately location, stake position, is arch so that the stake that construction forms interconnects, with the progress of construction, check at any time position, stake position, in case skew occurs in the stake position or pile body occurs tilting, cause between stake and the stake discontinuous, each stake is linked to each other mutually side by side, form continuous cement mixing pile diaphragm wall.Figure below is the part that this reinforcement means forms structure.

Claims

1. cement mixing pilework that is used for slope reinforcement, it is characterized in that: comprise the first diaphragm wall, the second diaphragm wall and the 3rd diaphragm wall, described the first diaphragm wall is the cement mixing pile diaphragm wall, and the first diaphragm wall moves towards the interval along side slope and arranges; Described the second diaphragm wall also is the cement mixing pile diaphragm wall, and this second diaphragm wall is arranged between two adjacent the first diaphragm walls, and described the second diaphragm wall is shaped as arch and domedly pushes up to the slope; Described the 3rd diaphragm wall is the rotary churning pile diaphragm wall, and this rotary churning pile diaphragm wall is arranged on the sloping end of side slope and connects into an integral body with described the first diaphragm wall lower end.