CN103912004A

CN103912004A - Rivet pile

Info

Publication number: CN103912004A
Application number: CN201310318072.6A
Authority: CN
Inventors: 刘春原; 刘明泉; 母焕胜; 赵梦璇; 高岭
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-18
Filing date: 2013-07-18
Publication date: 2014-07-09

Abstract

The invention relates to a novel soft soil foundation processing technology, discloses a rivet pile and belongs to a novel foundation processing method in civil engineering soft soil foundation reinforcement. A flexible pile (mixing pile, gravel pile and the like) and rigid pile (pre-stressed concrete thin-wall pipe pile and cast-in-place concrete thin-wall pipe pile) composite foundation method is used for current soft soil foundation reinforcement processing. The flexible piles are cheap, but the quality is difficult to control; the rigid pile is reliable in quality, but the cost is increased; site qualities of cast-in-place concrete thin-wall pipe piles are difficult to control. According to the rivet pile, pre-stressed concrete thin-wall pipe piles and cast-in-place concrete thin-wall pipe piles are replaced by common concrete pipe piles, so that the cost can be reduced. The rivet pile has the advantages of being easy to fabricate, simple to construct, low in cost, wide in application range and the like and can be used for soft soil foundation processing of industrial and civic buildings.

Description

Rivet stake

Technical field

The present invention relates to civil engineering reinforced soft soil ground technology, be specially design and the construction method of Soft Ground concrete rivet stake.

Background technology

Reinforced soft soil ground is processed the normal thin tubular piles produced by prestressed concrete that adopts hereinafter to be referred as PTC stake.PTC stake belongs to rigid pile, and stake end stress is concentrated obviously, easily produce larger on the amount of thrusting, cause the differential settlement of superstructure, affect the normal use of superstructure.For addressing the above problem, conventionally at stake end reserved steel bar, cast-in-situ concrete pile cap, so not only increases cost, improves construction difficulty but also can affect construction speed.For the PTC stake with pile cover, its pile spacing is 7 times to 8 times an of footpath, is mainly used in the control of sedimentation, but bearing capacity is improved seldom, lacks the benefit of rigid pile.

Summary of the invention

For the deficiencies in the prior art, the technical problem that the present invention solves is just to provide a kind of design and construction method of rivet stake.It uses ordinary concrete pile tube to substitute prestressed concrete pipe pile, can effectively reduce costs; Use prefabricated rivet shape concrete pile follower to replace cast-in-situ concrete pile cover, pile body is connected fast and reliable with pile cover, eliminates reserved steel bar construction technology and speed of application are impacted.

Rivet pile spacing involved in the present invention than determining, is generally 2 times to 3 times pile cover diameters by common stake stake footpath, can improve the bearing capacity of soft foundation simultaneously and reduce sedimentation, gives full play to the performance of rigid pile.Rivet stake embodiment technical-economic index involved in the present invention is compared as follows: suppose the long 12m of being all of stake, width of subgrade 50m, presses apart from end of the bridge 30m range computation.The former deep-mixed pile that is designed to, stake footpath 500mm, pilespacing is respectively 1100m, 1300mm, 1500mm, and triangle lays out pile, and the every linear meter(lin.m.) comprehensive unit price of deep-mixed pile is 30 yuan.1010 of total amount of pile, total linear meter(lin.m.) 12120m, 1500 square metres of reinforcing expenses are 363600 yuan, it is 242.4 yuan that unit square is reinforced.Optimal design is rivet stake, stake footpath 480mm, and wall thickness 40mm, pilespacing is respectively 2000mm, 2500mm, 3000mm, and the every linear meter(lin.m.) comprehensive unit price of rivet stake is about 102 yuan.294 of total amount of pile, total linear meter(lin.m.) 3528m, 1500 square metres of reinforcing expenses are 359856 yuan, it is 239.9 yuan that unit square is reinforced.Based on more visible above, two kinds of reinforcing and processing methods of deep-mixed pile and rivet stake, rivet stake cost is lower, and rivet stake has ground strong adaptability, construction quality is easily controlled, and bearing capacity is high, total settlement is little, be easy to quality examination etc. is the incomparable advantage of deep-mixed pile.The inventive method has handling ease, and construction is simple, with low cost, pollution-free, the features such as applied range.Rivet stake is applicable to the Soft Ground of highway construction and industrial civil building.

The present invention provides a kind of construction method that is applicable to described rivet stake simultaneously.At the scene in construction, become pile tube technique with respect to shaking into method, the present invention adopts merogenesis static pressure mode, without mud, without oil gas, noiselessness, pollution such as shockproof grade, on facing mutually building foundation also without impact, integrated cost is low, is particularly suitable for using in the urban construction high in environmental requirement, municipal administration or highway construction project and concealed work, has broad application prospects and huge market value.

Accompanying drawing explanation

Fig. 1 is rivet stake profile of the present invention.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing, the present invention is further described:

Designed rivet stake and the construction method of the present invention comprises: the activitiess such as pile and piling.These activitiess and prior art do not have essential distinction, mean that these prior aries are basic technologies of the present invention simultaneously yet.Pile shaft material adopts common coagulation according to design, and pile body diameter is determined according to designing requirement, adopts centrifugal process to produce.Every section of pile body length should not exceed 6 meters, and wall thickness should not be less than 40 millimeters.While not establishing principal rod in pile cover, can adopt plain concrete, while establishing principal rod in pile cover, carry out by existing relevant specification of country.Pile cover diameter is 2: 1 with the ratio of pile body diameter.Pile cover shape should be identical with pile body shape, can adopt circular or square.Construction method is as follows:

1 by designing requirement fixed pile;

Prefabricated tubular rivet stake merogenesis is depressed into projected depth by 2 use pile presss;

3 by 0.5 meter of soil of stake end hollow position soil layer hand excavation, builds after 0.2 meter of plain concrete, places precast concrete pile cover;

4 after concrete strength reaches age phase, lays folder muscle Base with Sand Gravel Cushion, form compound foundation on it.

Claims

1. Soft Ground new technology-rivet stake, comprise and use ordinary concrete pile tube to substitute prestressed concrete pipe pile, use prefabricated rivet shape concrete pile follower to replace cast-in-situ concrete pile cover, rivet pile spacing is determined by common stake stake footpath ratio, a kind of construction method of applicable rivet stake.

2. the design of rivet stake according to claim 1, pile shaft material adopts common coagulation according to design, and pile body diameter is determined according to designing requirement, adopts centrifugal process to produce.Every section of pile body length should not exceed 6 meters, and wall thickness should not be less than 40 millimeters.

3. the design of rivet stake according to claim 1, while not establishing principal rod, can adopt plain concrete in pile cover, while establishing principal rod, carries out by existing relevant specification of country in pile cover.Pile cover diameter is 2: 1 with the ratio of pile body diameter.Pile cover shape should be identical with pile body shape, can adopt circular or square.

4. the design of rivet stake according to claim 1, rivet pile spacing than determining, is generally 2 times to 3 times pile cover diameters by common stake stake footpath.It is characterized by bearing capacity high, and be multi-column pier foundation, settling amount is very little.

5. the construction method of rivet stake according to claim 1, its feature adopts the mode of merogenesis static pressure, adopt merogenesis static pressure mode, without mud, without oil gas, noiselessness, pollution such as shockproof grade, on facing mutually building foundation also without impact, integrated cost is low, is particularly suitable for using in the urban construction high in environmental requirement, municipal administration or highway construction project and concealed work.

6. the construction method of rivet stake according to claim 1, construction method is as follows: by designing requirement fixed pile; Prefabricated tubular rivet stake merogenesis is depressed into projected depth with pile press; By 0.5 meter of soil of stake end hollow position soil layer hand excavation, build after 0.2 meter of plain concrete, place precast concrete pile cover; After concrete strength reaches age phase, on it, lay folder muscle Base with Sand Gravel Cushion, form compound foundation.