CN201581408U

CN201581408U - Open caisson with sump

Info

Publication number: CN201581408U
Application number: CN200920295897XU
Authority: CN
Inventors: 孙利民
Original assignee: SHANTOU DAHAO MUNICIPAL CONSTRUCTION CO Ltd
Current assignee: SHANTOU DAHAO MUNICIPAL CONSTRUCTION CO Ltd
Priority date: 2009-12-31
Filing date: 2009-12-31
Publication date: 2010-09-15
Anticipated expiration: 2019-12-31

Abstract

The utility model provides an open caisson with a sump, comprising an open caisson wall and an open caisson bottom which are fixedly connected to form a cavity; the open caisson is characterized by also comprising the sump; the sump comprises a well body and a well shutter positioned above the well body; the open caisson bottom is provided with a vertical through hole; the sump passes through the through hole and is connected with the open caisson bottom; and the well body of the sump is provided with a seepage hole. The open caisson drains water away through the sump so as to finish the dry bottom-sealing construction. The arrangement of the sump meets the drainage construction requirements of the open caisson dry bottom-sealing construction, the construction equipment is simple and easy to install and operate, the power consumption is reduced, the precipitation investment is saved and the drainage efficiency of the open caisson is improved.

Description

The open caisson that has collecting well

Technical field

The utility model relates to a kind of open caisson, relates in particular to a kind of open caisson that has collecting well.

Background technology

Along with constant development of economy, the continuous progress of science and technology and the minimizing day by day of world energy sources, people more and more pay attention to the saving and the utilization ratio of the energy aborning, make the harmony between man and nature development to satisfy the novel industrialization road requirement of China.

Open caisson is the reinforced concrete structures of pit shaft shape, builds up on the ground of drying.Excavate the soil body in the well with machinery then, and the gravity that relies on open caisson self sinks to design elevation after overcoming the frictional resistance of well outer wall and soil, pass through the concrete back cover then and clog wellhole, drain ponding or infiltration in the well, make it become Bridge Pier or other underground structure.The advantage of open caisson has many, and 1. its buried depth can be very big, and globality is strong, good stability, and bigger loaded area is arranged, and can bear bigger vertical load and horizontal loading, provides the firm underground space to underground structure; 2. open caisson is the basis of engineering, and the retaining of foundation ditch soil and water-retaining structure thing when being construction again need not to be provided with the hole wall and support or the sheet pile leg in the sinking process, simplified construction.Because of its above-mentioned advantage, so open caisson is widely used in the engineerings such as the active well of deep-well structure such as the Foundation Design, pump house, oil cellar, pond vertical shaft of bridge, chimney, water tower and shield structure or jacking construction and received well.The follow-up engineering that the dried back cover of open caisson is a well sinking behind the design altitude is specially the ponding in the well is got rid of, and creates the underground space of a drying, installs for the indoor construction of underground structure and equipment to create conditions.For guaranteeing carrying out smoothly of dried back cover construction, and avoiding gushing the open caisson deflection that sand causes because of the generation of drawing water, is the key of open caisson back cover.The dried back cover engineering of existing open caisson comprises employing light well point, pipe well well point, electric osmose well point, eductor well point and deep-well well-points dewatering etc.Wherein, light well point is a kind of method of artificial dewatering, it is around foundation ditch or the side well casing that diameter is thinner sinks in the aquifer that is deeper than substrate, well casing top is connected with house steward, utilize pumping equipment that underground water is constantly extracted out in well casing by house steward, original groundwater table is reduced to below the substrate.The pipe well well point is exactly around foundation ditch a pipe well to be set at a certain distance, and each pipe well constantly draws water dewatering with a water pump separately, and this is more suitable under the big situation of groundwater run off.The electric osmose well point is that the well point pipe is made negative electrode, and side is correspondingly inserted reinforcing bar or steel pipe is done anode within it, feed direct current after, under effect of electric field, make the current in the soil quicken to flow to the well point pipe to the negative electrode infiltration.This method power consumption is many, only uses under special circumstances.When precipitation depth surpasses 8m, should adopt the eductor well point.The equipment of eductor well point is mainly formed by spraying well casing, high-pressure hydraulic pump and pipe-line system, and equipment is complicated.The deep-well well point for when precipitation when the 15m, the deep-well well point generally can reduce water level 30--40m, have in addition can reach more than the 100m, common deep well pump has two types: motor deep well pump and deep well submerged pump on the ground, this equipment is had relatively high expectations, technical sophistication, expense costliness.

Therefore, demand a kind of applied range urgently, construction equipment is simple, and the low and high efficiency open caisson that has collecting well of energy consumption is to overcome above-mentioned defective.

The utility model content

The purpose of this utility model is to provide a kind of applied range, and construction equipment is simple, and energy consumption is low, and the high efficiency open caisson that has collecting well.

For achieving the above object, the technical solution of the utility model is: a kind of open caisson that has collecting well is provided, comprise caisson wall and open caisson shaft bottom, described caisson wall is fixedlyed connected with described open caisson shaft bottom and is formed cavity, it is characterized in that, also comprises collecting well, described collecting well comprises the well body and is positioned at the well lid of well body top, described open caisson shaft bottom has vertical through hole, and described collecting well wears described through hole and is connected with described open caisson shaft bottom, and described collecting well well body has the infiltration hole.

The utility model compared with prior art, the open caisson shaft bottom of described open caisson has vertical through hole, collecting well wears described through hole and is connected with described open caisson shaft bottom.Collecting well the drainage construction requirement of having satisfied the dried back cover engineering of open caisson is set, construction equipment is simple, easily installs easy to operately, has reduced power consumption, has saved the precipitation investment; It has wide range of applications, and is applicable to most dried back cover engineerings of open caisson; Collecting well compiles underground water or rainwater by the infiltration hole on it, in open caisson back cover phase and back cover concrete preserving period, can continue draining, improve drainage efficiency, shorten the cycle of the dried back cover engineering of open caisson, thereby shorten the sinking well engineering cycle, be implemented in the shorter time limit and allow open caisson enter the operating period.

Preferably, described collecting well is steel material or rigid plastics.Steel material or rigid plastics have guaranteed the bulk strength of collecting well.

Preferably, be provided with water pump in the described well body of described collecting well.According to the concrete condition of job site, water pump is set in collecting well, realize the water in the collecting well is discharged outside the open caisson.

Preferably, be provided with the drainage layer in the described well body of described collecting well.The setting of drainage layer avoided collecting well in the process of draining because of producing the problem of the open caisson deflection that sand boil causes.

Preferably, described collecting well comprises permeable geotextiles, and it is external that described permeable geotextiles surrounds described well, and covers described infiltration hole.The sandslide because of supporting caisson has been avoided in the setting of permeable geotextiles, and causes the problem of the displacement of open caisson.

Description of drawings

Fig. 1 has the structural representation of the open caisson of collecting well for the utility model.

Fig. 2 is the enlarged drawing of collecting well in the open caisson that has collecting well shown in Figure 1.

The specific embodiment

With reference now to accompanying drawing, describe embodiment of the present utility model in detail, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the utility model aims to provide a kind of applied range, and construction equipment is simple, and the high efficiency open caisson that has collecting well.Below in conjunction with accompanying drawing, structure of the present utility model is described.

Figure 1 shows that the utility model has the structural representation of the open caisson of collecting well.With reference to Fig. 1-2, the open caisson 1 that has collecting well comprises caisson wall 11, open caisson shaft bottom 12 and collecting well 13, described caisson wall 11 is fixedlyed connected with described open caisson shaft bottom 12 and is formed cavity 14, described open caisson shaft bottom 12 has through hole 121, preferably, described through hole 121 is opened the center in described open caisson shaft bottom 12.Particularly, described collecting well 13 wears described through hole 121 and is connected with described open caisson shaft bottom 12; In the present embodiment, described collecting well 13 passes described through hole 121, and described open caisson shaft bottom 12 is connected with the top of described collecting well 13.

With reference to Fig. 1-2, described collecting well 13 comprises well body 131 and well lid 132, and described well lid 132 is arranged at described well body 131 tops, is used to cover described well body 131.The below of described well body 131 has infiltration hole 1311, and described infiltration hole 1311 is used for underground water and permeates in collecting well.In the present embodiment, described collecting well 13 is a steel material, and described collecting well 13 also can be rigid plastics and makes.Be provided with drainage layer 133 in the described well body 131 of described collecting well 13, described drainage layer 133 is made for grit or rubble, is arranged at the bottom of described well body 131.The setting of drainage layer 133 avoided collecting well 13 in the process of draining because of producing the problem of open caisson 1 deflection that sand boil causes.

Preferably, described collecting well 13 comprises permeable geotextiles (figure does not show), and described permeable geotextiles surrounds outside the described well body 131, and covers described infiltration hole 1311.The sandslide because of supporting caisson 1 has been avoided in the setting of described permeable geotextiles, and the problem of the open caisson displacement that causes.Preferably, be provided with water pump (figure does not show) in the described well body 131 of described collecting well 13.According to the concrete condition of job site, the water pump of required model is set in collecting well 131, realize the water pump drainage in the collecting well 131 is gone out outside the open caisson.

When the dried back cover engineering of open caisson 1 starts, open the well lid 132 of collecting well 13, ponding in the open caisson 1 and underground water by collecting well 13 infiltration hole 1311 and the drainage layer 133 of the bottom of collecting well 13 flow in the collecting wells 13, utilize water pump to draw water again, the ponding in the collecting well is discharged outside the open caisson 1.After dried back cover engineering was finished, the well lid 132 usefulness screws and well body 131 envelopes of collecting well 13 were tight, with concrete the through hole 121 of open caisson base plate 12 are sealed again.

The open caisson shaft bottom that the utility model has collecting well has vertical through hole, and collecting well wears described through hole and is connected with described open caisson shaft bottom.Collecting well the drainage construction requirement of having satisfied the dried back cover engineering of open caisson is set, construction equipment is simple, easily installs easy to operately, cuts down the consumption of energy, and has saved the precipitation investment; It has wide range of applications, and is applicable to most dried back cover engineerings of open caisson; Collecting well is received water by the infiltration hole on it, has improved drainage efficiency, has shortened the cycle of the dried back cover engineering of open caisson, thereby shortens the sinking well engineering cycle, is implemented in the shorter time limit to allow open caisson enter the operating period.

Above disclosed only is preferred embodiments of the present utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims

1. open caisson that has collecting well, comprise caisson wall and open caisson shaft bottom, described caisson wall is fixedlyed connected with described open caisson shaft bottom and is formed cavity, it is characterized in that, also comprise collecting well, described collecting well comprises the well body and is positioned at the well lid of well body top that described open caisson shaft bottom has vertical through hole, described collecting well wears described through hole and is connected with described open caisson shaft bottom, and described collecting well well body has the infiltration hole.

2. the open caisson that has collecting well as claimed in claim 1 is characterized in that, described collecting well is steel material or rigid plastics.

3. the open caisson that has collecting well as claimed in claim 1 is characterized in that, is provided with water pump in the described well body of described collecting well.

4. the open caisson that has collecting well as claimed in claim 1 is characterized in that, is provided with the drainage layer in the described well body of described collecting well.

5. the open caisson that has collecting well as claimed in claim 1 is characterized in that described collecting well comprises permeable geotextiles, and it is external that described permeable geotextiles surrounds described well, and covers described infiltration hole.