CN2538839Y

CN2538839Y - Fastened steel coffer for pier foundation construction in water

Info

Publication number: CN2538839Y
Application number: CN 02223643
Authority: CN
Inventors: 熊建辉; 孙建华; 聂井华
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-22
Filing date: 2002-03-22
Publication date: 2003-03-05
Anticipated expiration: 2012-03-22

Abstract

The utility model relates to a lock catch type steel cofferdam for construction of pier foundation under water, which is a split type assembly steel cofferdam. The utility model is formed by plugging and assembling a plurality of steel formworks at the job location by lock catch draw bails, wherein, the lock catch draw bail comprises a lock catch and a filling sealed tube. The lock catch is formed by covering a tapered end formed by connecting a supporting arm plate with a round steel tube into a fore shaft composed of a round steel tube slotted one side along length direction. The filling sealed tube comprises two notch structures which face to each other. The utility model has the advantages of short man-hour, low cost, convenient construction and good construction safety.

Description

Pier foundation construction bayonet type steel cofferdam in the water

Technical field:

The utility model relates to a kind of bridge construction facility, particularly Bridge Pier Construction steel cofferdam.

Background technology: the Bridge Pier Construction steel cofferdam of prior art adopts integral hoisting formula steel boxed cofferdam more, it is by steel plate, steel such as channel-section steel are welded into the casing steel cofferdam of an integral body, in the on-the-spot integral lifting of Bridge Pier Construction, sinking, need large-scale Lifting implements, equipment, therefore the construction period is long, cost is high, and poor stability.

Summary of the invention: the purpose of this utility model is to design a kind of with the monolithic steel cofferdam composition body structure steel cofferdam of assembly unit at the construction field (site) that breaks the whole up into parts, and in the hope of the reduction of erection time, reduces cost, increases working security.

Technical solution of the present utility model is a pier foundation construction bayonet type steel cofferdam in a kind of water, it is a kind of split type assembly unit steel cofferdam, it by some steel forms with the snap close draw bail at the construction field (site) the sleeve assembly unit connect and to constitute, the snap close draw bail comprises a snap close and a filling sealed tube.

Description of drawings:

Fig. 1 is the steel form elevation

Fig. 2 is the steel form vertical view

Fig. 3 is a steel form snap close draw bail cross section view, and notch configuration is a channel-section steel.

Fig. 4 is a steel form snap close draw bail cross section view, and notch configuration is an angle steel.

Fig. 5 is a steel form snap close draw bail cross section view, and notch configuration is half of pipe

Fig. 6 is a steel form snap close draw bail cross section view, and notch configuration is the steel plate billot

Figure seven is bayonet type steel cofferdam structural representation vertical views

Specific embodiment:

The bayonet type steel cofferdam use in pier foundation construction in a kind of water, and it is a kind of split type assembly unit steel cofferdam, by the snap close draw bail of some steel forms on the steel form at the construction field (site) sleeve assembly unit connection constitute.Steel form is referring to accompanying

drawing

1,2, and it is by steel plate [1] and angle steel [2] and steel ribs [3] welding formation, and snap close draw bail [4] is arranged on the steel form edge.Complete is steel material.

Snap close draw bail [4] is on the commissural flange of the steel form of two adjacent connections, and referring to accompanying drawing 3, snap close draw bail [4] comprises a snap close [13] and a filling sealed tube [16]; Along the vertical assembly unit direction of steel form, two steel forms [18], [12] the edge-on rib limit [5] of a fourth type cross section is respectively arranged on the adjacent commissural flange, edge-on rib limit [5] is made of the welding of steel plate billot, the some stiffeners of edge-on rib limit [5] mat [17] connect with steel form, wherein mat stiffener [6] connection support arm plate [7] is gone up on the edge-on rib limit [5] of a steel form [18], support arm plate [7] connects tapered end round steel pipe [9], edge-on rib limit [11] the mat stiffener [8] of another piece steel form [12] connects fore shaft round steel pipe [10], fore shaft round steel pipe [10] is a round steel pipe that opening is arranged along pipe range direction sidewall, support arm plate [7] sleeve of tapered end round steel pipe [9] is gone in the opening of fore shaft round steel pipe [10], tapered end round steel pipe [9] sleeve is gone in the fore shaft round steel pipe [10], constitutes a snap close [13]; Along the vertical assembly unit direction of steel form, notch configuration [14], [15] that are welded into by channel-section steel or angle steel or half of steel pipe or steel plate bar are respectively arranged, on two adjacent steel templates [18], [12] commissural flange referring to accompanying drawing 3,4,5,6.Notch configuration [14] on two adjacent steel templates [18], [12], the recess of [15] are relative, constitute a filling sealed tube [16]].

During Bridge Pier Construction, be prefabricated into some steel forms earlier according to bridge pier shape, size, utilize original drilling platform waterborne of construction and steel casing location at the construction field (site), adopt on-the-spot split job practices, the lifting of monolithic steel form is sunk, the snap close draw bail sleeve of the steel form of adjacent connection above it is assembled into a whole steel cofferdam, injects packing matcrial sealing water blockoffs such as Guamishi concrete then in the filling sealed tube of connection place.

The advantage of fastened steel coffer for pier foundation construction is that it becomes several with the steel cofferdam split in the utility model water Independent steel form at the scene single lifting, sinking, sleeve is assembled into whole cofferdam, need not use large-scale lifting, sinking Thereby equipment can greatly reduce man-hour, can shorten half duration approximately, significantly reduce cost, and convenient construction, outstanding It increases working security.

Claims

1, pier foundation construction bayonet type steel cofferdam in a kind of water, it is characterized in that it is a kind of split type assembly unit steel cofferdam, by some steel forms with the snap close draw bail at the construction field (site) the sleeve assembly unit connect and to constitute, the snap close draw bail comprises a snap close and a filling sealed tube.

2, the bayonet type steel cofferdam is used in pier foundation construction in the water according to claim 1, it is characterized in that its snap close draw bail is that the snap close draw bail comprises a snap close and a filling sealed tube on the commissural flange of the steel form of two adjacent connections; Along the vertical assembly unit direction of steel form, an edge-on rib limit is respectively arranged on two adjacent commissural flanges of steel form, wherein the edge-on rib limit mat stiffener of a template connects the support arm plate, the support arm plate connects the tapered end round steel pipe, the edge-on rib limit mat stiffener of another piece steel form connects the fore shaft round steel pipe, the fore shaft round steel pipe is a round steel pipe that opening is arranged along pipe range direction sidewall, the support wallboard sleeve of tapered end round steel pipe is gone in the opening of fore shaft round steel pipe, tapered end round steel pipe sleeve is gone in the fore shaft round steel pipe, constitutes a snap close; Along the vertical assembly unit direction of steel form, respectively there is one by channel-section steel on two adjacent steel template commissural flanges, or the notch configuration that is welded of angle steel or half of steel pipe or steel plate bar, the recess of the notch configuration on two adjacent steel templates is relative, constitutes a filling sealed tube.