CN205822177U

CN205822177U - Stake is dug in a kind of multistage reaming rotation

Info

Publication number: CN205822177U
Application number: CN201520790607.4U
Authority: CN
Inventors: 廖心北; 岳大昌; 李明; 贾欣媛
Original assignee: CHENGDU SIHAI GEOTECHNICAL ENGINEERING Co Ltd
Current assignee: CHENGDU SIHAI GEOTECHNICAL ENGINEERING Co Ltd
Priority date: 2015-10-13
Filing date: 2015-10-13
Publication date: 2016-12-21
Anticipated expiration: 2025-10-13

Abstract

Stake is dug in a kind of multistage reaming rotation, dry and one or more levels reaming section including stake, it is characterised in that reaming section includes epimere, DS section, hypomere.Epimere and hypomere are disc-shaped, and DS section is column.The diameter of DS section is more than the dry diameter of stake, and epimere top diameter diameter dry with stake is consistent, and base diameter is consistent with DS section diameter；The top diameter of hypomere is consistent with DS section diameter, and base diameter is more than the dry diameter of stake, less than DS section diameter.This utility model can improve bearing capacity, and little by formation influence, can complete expanding and formation rule reaming section in compared with hard formation, and pile quality is high, reduces concrete and the consumption of bar material, reduces construction costs.

Description

Stake is dug in a kind of multistage reaming rotation

Technical field

This utility model relates to the foundation construction field of the engineering such as buildings or structures, municipal administration, especially with a kind of multistage reaming The structure that stake is dug in rotation is relevant.

Background technology

The position that the hole-expanding pile being presently used for foundation engineering mostly is the squeezed technique of employing different in boring side is formed some Individual branch and the deposited reinforced concrete pile of bearing capacity dish, the most existing expanding branch grouting pile.Compacted bearing disk pile is by squeezed The squeezed effect of machine changes pile body area of section, carries out squeezed branch, passed by branch by load in the stratum that bearing capacity is high It is delivered in soil layer, is i.e. layered carrying, one by one off-load.Support disk pile has given full play to the end resistance of stake, expands loading end simultaneously Long-pending, reach the purpose of the supporting force improving bored concrete pile.

But owing to compacted bearing disk pile is the most squeezed perfusion after common drilled pile pore-forming completes, therefore the engineering time is relatively Long；In squeezing process by soil layer performance impact relatively greatly, soil compaction effect is obvious, and in soft layer or hard soil layer, one-tenth dish all compares Difficulty, or dish type is irregular, causes branch quality discreteness bigger；The angle that force bearing disk is formed up and down easily causes stress collection In, by the biggest shearing, there is the risk cut off by disk body in stake disk body and pile body connecting portion bear external force when；Branch When using mud off, mud mud skin is thicker, and sediment of the hole bottom is thicker, as scarfing cinder is not clean, can affect the performance of pile bearing capacity.

Utility model content

This utility model provides a kind of multistage reaming rotation to dig stake, not enough to solve above-mentioned prior art, improves bearing capacity, and Little by formation influence, expanding and formation rule reaming section can be completed in compared with hard formation, pile quality is high, reduces concrete and steel The consumption of muscle material.

In order to realize the purpose of this utility model, plan employing techniques below:

Stake is dug in a kind of multistage reaming rotation, dry and one or more levels reaming section including stake, it is characterised in that described reaming section bag Include epimere, DS section, hypomere.

Further, described epimere and hypomere are disc-shaped, and DS section is column.

Further, the diameter of described DS section is more than the dry diameter of stake, and epimere top diameter diameter dry with stake is consistent, bottom Diameter is consistent with DS section diameter；The top diameter of hypomere is consistent with DS section diameter, and base diameter is more than the dry diameter of stake, is less than DS section diameter.

The beneficial effects of the utility model are:

1, this utility model uses rotary drilling rig pore-forming, is expanded by rotation and forms reaming section, compared with traditional squeezed technique, Affected by formation condition less, can be applied in relatively hard formation, formed reaming sector hole type stable；

2, existing compacted bearing disk pile is generally after boring completes, and needs to use special squeeze equipment to carry out into dish, In squeezing process, the soil body is formed cavity by compacted and " precompressed ", and after squeeze equipment is withdrawn from, the soil body being extruded can occur one Determining the resilience of degree, especially go up force bearing disk, under Gravitative Loads, resilience is bigger；And this utility model uses rotation to dig expansion Hole technique is constructed, less to soil disturbance；

3, according to squeezed technique, then it is first pore-forming, more squeezed, the location of the most squeezed section often there will be deviation；And this Utility model rotation is dug chambering process and is constructed, and can be done directly reaming when creeping into preferable stratum, to ensure reaming position The accuracy put, and efficiency of construction is high；

4, in existing support disk pile, the angle between its upper and lower section (dish), sediment is difficult to discharge, leverages and prop up The quality of dish；Rotation of the present utility model is expanded stake and be there is DS section between upper and lower section, between fold-line edge and the straight line of formation Angle be obtuse angle, sediment is difficult to retain；

5, destruction is easily cut off in common support disk pile pile body and disk body junction, and this utility model sets between upper and lower section Put DS section, original reaming section prolate pile-type is improved, form pier stud stake, change original force-mechanism, be effectively improved Bearing capacity.

Accompanying drawing explanation

Fig. 1 shows front view of the present utility model.

Fig. 2 shows plan view of the present utility model.

Detailed description of the invention

As shown in Fig. 1～2, stake is dug in a kind of multistage reaming rotation, does 1 and one or more levels reaming section 2, described reaming including stake Section 2 includes epimere 21, DS section 22, hypomere 23.

Concrete, described epimere 21 and hypomere 23 are disc-shaped, and DS section 22 is in column.

Concrete, the diameter of described DS section 22 does 1 diameter more than stake, and 1 diameter is done in described epimere 21 top diameter and stake Unanimously, base diameter is consistent with DS section 22 diameter；The top diameter of described hypomere 23 is consistent with DS section 22 diameter, and bottom is straight 1 diameter is done, less than DS section 22 diameter more than stake in footpath.

Construction method of the present utility model is as follows:

1, pore-creating: revolve the most in two steps by design requirement every one-level reaming and dig, first does the diameter construction of 1 to this grade of expansion by stake Absolute altitude at the bottom of the section of hole, then carries out reaming at appointment absolute altitude, forms reaming section 2.1 diameter and each section of reaming section 2 are done in aperture and stake Diameter matches, is specifying stratum to set one or more levels reaming section 2, reaming section 2 length and progression according to construction requirement and demand Can design according to formation condition；

2, steel reinforcement cage is laid: after pore-forming, hangs steel reinforcement cage, until delivering to projected depth；

3, casting concrete: after steel reinforcement cage is in place, secondary scarfing cinder, complete inner concrete pour, maintenance.

Compared with common compacted bearing disk pile, between upper and lower force bearing disk, it is regular cylindrical body, is possible not only to improve raising and holds Load power, and little by formation influence, expanding and formation rule reaming section can be completed in compared with hard formation, pile quality is high, reduces mixed Solidifying soil and the consumption of bar material, reduce construction costs.

Claims

1. a stake is dug in multistage reaming rotation, including stake dry (1) and one or more levels reaming section (2), it is characterised in that described reaming Section (2) includes that epimere (21), DS section (22), hypomere (23), described epimere (21) and hypomere (23) are disc-shaped, described DS section (22) in column, the diameter of described DS section (22) is more than dry (1) diameter of stake, and described epimere (21) top diameter is dry (1) with stake Diameter is consistent, and base diameter is consistent with DS section (22) diameter.

Stake is dug in multistage reaming the most according to claim 1 rotation, it is characterised in that the diameter of described DS section (22) is more than stake Dry (1) diameter, the top diameter of described hypomere (23) is consistent with DS section (22) diameter, base diameter be more than stake do (1) diameter, Less than DS section (22) diameter.