CN103669837A - Construction method for rapidly removing formwork on slope concrete structure - Google Patents

Abstract

The invention relates to a construction method for rapidly removing a formwork on a slope concrete structure. The construction method includes the following steps that a, when the formwork is erected on the upper surface of slope concrete, concrete pouring and compacting openings distributed in a plum-blossom shape are reserved with the distances of about one meter; b, the layered pouring sequence from bottom to top is adopted for the concrete, before the poured concrete at the bottom layer is set initially, the formwork removal and surface plastering are performed rapidly according to the layered sequence from bottom to top, and emerging portions defective in impression are repaired; c, bolt holes left after formwork removal are compacted and troweled to ensure that the poured concrete has zero defect in quality impression, and then covering, water sprinkling and maintaining are performed by using non-woven fabric. Due to the improvement and innovation of butt-joint bolts, the positioning mode of the top formwork is simplified, the erecting efficiency of the top formwork is improved, meanwhile, cost for manufacturing and installing cushion blocks is saved, quality defects of the concrete are avoided, and quality maintaining cost is saved.

Description

A kind of slope concrete structure quick removable mould board construction method

Technical field

The present invention relates to a kind of construction techniques, especially a kind of slope concrete structure quick removable mould board construction method.

Technical background

During slope concrete structure construction, conventionally there are two kinds of formwork ways: single side formwork and bilateral formwork.

Single side formwork is conventional simple and easy way in slope concrete construction, is about to harsh concrete (concrete that the slump is less) and photographs in template, and manual sorting moulding, vibrates during initial set also floating a little.There is following defect in this kind of method: (1), owing to being difficult to effectively to vibrate before concrete initial set (effectively vibrate should start bleeding with mixture till), the concrete density of moulding is lower, easily produces Seepage; (2) because concrete vibrating is insufficient, receipts face difficulty, concrete surface poor flatness, needs the levelling of mortar cover.(3) need the artificial slope moulding of clapping during concreting, efficiency of construction is lower.

During bilateral formwork concreting, with respect to single surface formwork, can guarantee concrete compactness, large face can reach the effect of " the outer light of interior reality " substantially.But still can there are some defects in part: (1), because vibrating spear is difficult to insert completely, easily causes partial portion concrete vibrating leakiness, occurs honeycombing; (2) bilateral formwork generally adopts connecting bolt, if the docking bolt position after form removal is positioned at roofing, easily occurs along bolt Seepage.

The slope concrete template system of the two-sided and single surface formwork of tradition is because of the defect of self technique, be difficult to the disposable quality requirement that reaches high standard concrete " the outer light of interior reality ", often need once to have a shave, occur the hidden danger of quality such as seepage, thereby increased construction cost.

Summary of the invention

The object of this invention is to provide a kind of easy quality problems that occur of traditional slope concrete formwork that solve, reduce the slope concrete structure quick removable mould board construction method of construction cost.

For addressing the above problem, slope concrete structure quick removable mould board construction method of the present invention, comprises the following steps,

When a. slope concrete upper surface template is established, that keeps somewhere 1 meter of left and right of spacing is plum blossom-shaped distribution casting and compacting of concrete mouth;

B. concrete adopts placement layer by layer order from bottom to top, and the concrete that bottom has been built is wiped one's face according to the quick form removal of hierarchical sequence from bottom to top before initial set, and the perception rejected region occurring is repaired;

C. the concrete quality perception zero-fault floating to the bolt hole compacting staying after form removal, assurance has been built, then covers watering maintenance with nonwoven.

No matter rolling over template construction technique soon, slope of the present invention template from efficiency of construction or construction quality, is all better than traditional one side and two-sided formwork construction technique.Contrast traditional two-sided formwork upper former and need to add cushion block, this kind of method simplified the locate mode of backform by the transformation innovation to connecting bolt, improved the efficiency that installs of backform, while has also saved making, the cost of cushion block has been installed, avoid quality defect of concrete, saved quality maintenance cost; Contrast single surface formwork, the method to concrete binding effect, has been avoided the trickling phenomenon that occurs in concreting process by backform, has also saved the time of waiting for concrete formation simultaneously, greatly accelerate concrete speed of application, saved the cost of mortar cover.

The specific embodiment

1, make split bolt: traditional split bolt is improved, when the pulling force producing requires, play the effect of Template Location when meeting concrete construction

2. installation form: when slope concrete upper surface template is established, that keeps somewhere 1 meter of left and right of spacing is plum blossom-shaped distribution casting and compacting of concrete mouth, fully vibrates and accelerates flowing water construction while guaranteeing concrete construction, waters the plugging plate smash mouthful through particular design, convenient mounting or dismounting.

Levels template is relatively independent, and upper former can meet quick-detachment, and while receiving face before concrete initial set, just collapsible die carries out concrete pavement processing, accelerates the turnover of turnover material tool and uses; Top bolt, nut and backing plate, can, with form removable recycling, reduce cost.

3, stripping and concrete are received face maintenance: before concrete initial set, form removable can be carried out to surface layer processing, non-textile mulch maintenance is used on surface, and concrete formation quality is better.

Claims (1)

1. a slope concrete structure quick removable mould board construction method, is characterized in that: comprises the following steps,

When a. slope concrete upper surface template is established, that keeps somewhere 1 meter of left and right of spacing is plum blossom-shaped distribution casting and compacting of concrete mouth;

B. concrete adopts placement layer by layer order from bottom to top, and the concrete that bottom has been built is wiped one's face according to the quick form removal of hierarchical sequence from bottom to top before initial set, and the perception rejected region occurring is repaired;

C. the concrete quality perception zero-fault floating to the bolt hole compacting staying after form removal, assurance has been built, then covers watering maintenance with nonwoven.