TW418274B - A pre-cast and site-cast combined construction method of retaining and waterproof diaphragm wall - Google Patents

Abstract

This is an invention of the construction method for the pre-cast and site-cast retaining and waterproof continuous wall. The main construction procedures are following steps. (1) Use conventional machinery to dredge the necessary guide trench around the building lot. Then hoist and position the pre-cast diaphragm wall units inside the guide trench to dig out for side wall, site-casting concrete followed to fill all gaps on earth pressure side to enhance its stiffness and waterproofing. (2) Dredge right-cross guide trenches on both X-axis and Y-axis at proper intervals. Then hoist and position the pre-cast concrete diaphragm wall units to temporarily support the retaining and waterproof continuous wall, of this pre-cast and site-cast combined construction, around the building lot to make basement earth dredging possible without conventional steel supporting. The pre-cast diaphragm wall units, assembled together with each other by lapping and screwing, can be adjusted into step shape to provide retaining bracing. Since no conventional steel supporting needed while dredging, the construction of this invention is superior to conventional ones on both time saving and cost saving.

Description

418274 V. Description of the invention α): '~ Construction method for waterproofing of the foundation retaining soil in Jianou II, especially-full planting, strong and strong growth; and; Parents wait for the trench, and suspend the concrete concrete continuous wall used for the temporary support of the surrounding retaining ground and waterproof continuous wall around the construction site. Second, traditional earth support is not required for earth excavation. It can be overlapped and adjusted into a stepped shape during the excavation, and the support can be directly entered into the construction site to dig earth.俟 Excavation to Luding, and then build the floor version one by one from bottom to top. The upper and lower floor versions are completed. During this time, the continuous wall of concrete used to support the periphery of the construction site can be removed and the cast screw can be removed. , Can also be used as a partition wall. For the public works of constructing underground structures under the road surface, the traditional reverse construction method can be used to finish the surface floor version, and sufficient openings for the excavator can be reserved, and the road surface can be used for transportation, which has less impact on the traffic. . The current foundation building method must first be excavated at the base of Zhou Jue ’s site, poured into concrete to form a continuous wall, and driven into vertical support steel columns for underground excavation. For each certain depth, a horizontal steel support must be erected to support the surroundings. The continuous cast-in-place concrete wall of the site is repeated in this way. The flat steel support is used. The flat steel support is used. After the earthwork excavation is completed, the horizontal steel support is used to construct the internal wall and floor in layers. Although the flat steel support can be removed after completion, the vertical support steel column cannot be removed until the underground floor version is completely completed. Therefore, the current foundation building method has the following b 1. The current field casting continuous soil retaining behavior requires horizontal steel support; horizontal 418274 V. Description of the invention (2) Steel support # and vertical support by steel columns The loss of time and money caused by the failure of excavation will be incurred as long as one part of the deformation can't be estimated. The examples of failure of excavation due to -deformation of steel supports are numerous at home and abroad, so I won't repeat them here; The supporting frame is set to be laid on a plane, and a layer of steel support must be laid for each certain depth control. The excavation and steel support are interactive and cannot be performed simultaneously. The number of layers of the steel support is not proportional to the depth of the underground excavation. The increase of 'to prevent the imbalance of soil pressure caused by deep excavation of continuous walls needs to be offset by horizontal steel supports with a relatively close spacing, so that it only causes construction difficulties and increases the construction period and cost (especially the cost of steel support is very high)' Mining with a long-arm excavator or a portal crane coupled with a small pusher excavator, the construction efficiency is low and the cost is high. The periphery of the foundation is a field prayer concrete continuous wall, that is, within the completed guide trench, Concrete is poured into the site; it is impossible to predict because of the conditions in the channel. 'The poured concrete cannot be in a homogeneous state in the channel, which tends to cause turtle collecting points, and the quality is not easy to control, especially when mudiness occurs in the channel. When the wall collapses%, it will lead to a mixed state of concrete and soil. In addition to the serious problem of continuous wall leakage, there are also concerns about structural weakness. Groundwater leakage caused by structural weakness into the structure will make the equipment damp and damaged, making it more uncomfortable to live. Generally, in order to achieve the water-stopping function, it will inevitably spend a lot of money to stop the water, but its ultimate effect is only to stop leakage. Lai decoration dealt with it. 3. Refer to the 21st issue of Geotechnical Magazine. The types of joints for field-cast continuous wall units include: * flat joints, jointed joints, steel polyethylene fabric, special structural joints, and continuous watertightness. Joints, etc., their common disadvantage is that the joints in the construction of cast-in-situ concrete units are likely to cause water seepage;

418274 ~ ----; ^ ^ — ______ ______ V. Description of the Invention (3) Although the theory of structural joints to prevent water seepage is better, its construction is complicated and often caused by Lu Ning's earth pressure over Ambassador's special structural deformation. Water seepage problem. In view of the above-mentioned shortcomings, the inventor believes that to make underground engineering construction to save man-hours, costs, convenient construction and good quality, the current _ construction method must be changed. Mai is: The main purpose of the present invention is to The cast-type cast mixed retaining water-repellent continuous wall replaces the present-day cast-concrete continuous wall; its concrete-type continuous wall is uniformly manufactured in industrial hemp. The quality of the cast product can avoid the deep soil collapse of the guide groove, and the cast concrete can be filled in the stope gap to achieve a complete water-stop function. 〇The secondary objective of the present invention is 'to replace the vertical steel columns and horizontal steel table braces by hanging concrete continuous walls in the vertical and horizontal guide trenches in the construction site, and the excavation has been completed and erected' In continuous underground excavation, there is only the problem of adjusting the bolts of the concrete material. There is no problem of alternate excavation and support work. A further object of the present invention is that the earth excavation support has no intermediate pillar, and the excavating equipment can directly drive into the ground for excavation work, especially the excavation and transportation truck for large foundations can drive into the ground by excavating the slope surface Spoil. In order for your reviewing committee to understand the purpose and effect of the present invention, the following specific examples are given in conjunction with the accompanying drawings to explain the present invention in detail, as follows: "" Schematic description: Figure 1 This is a plan view of the present invention. Figure 2 is a sectional view of the continuous concrete supporting wall of the present invention. (A —A section)

Page 6 4182 7:, 418274 V. Description of the invention (4) Figure 3 is a sectional view of the continuous concrete supporting wall of the present invention. (B-B section) Fig. 4 is a schematic diagram of a structural retaining wall of the present invention. Figure 5 is a sectional view of the structure of the present invention. Description of drawing number: 1 concrete continuous wall 1 1 mixed cast-in-place continuous groove guide groove around the construction site 1 2 partition plate 1 3 sieve mud plate 2 concrete concrete continuous wall for support 2 1 concrete concrete for support Continuous wall guide groove 2 2 Concrete beam 2 3 Error adjustment section 3 Field cast concrete continuous wall 3 1 Reinforcement 3 2 Composite material screw 3 Field cast concrete pressure plate 3 4 Pressure plate screw 3 5 Waterproof elastic material 3 The fourth floor version of Θ grouting gap, please refer to Figures 1 and 4, which are the plan view of the present invention and the detailed schematic diagram of the retaining wall. As shown in the note: the main structure of the present invention is composed of several guide grooves 1 1 and 21;

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Page 7 418274 V. Description of the invention (5) Continuous wall guide groove 1 1 Waterproof or bearing side soil pressure field cast concrete three-point field concrete continuous niches concrete continuous niches) XI (unit thick concrete continuous wall width ) So T = 1.25 meters is not completely tight, and the existing technology can be used to apply the third waterproof function; vertical or horizontal knotting on the outside 3 3. Waterproof function of the pressure screw on the outside; Cast-concrete surrounding concrete continuous wall sub-shape and pre-rotation continuous thickness have dual functions: positioning accuracy, and the optional concrete concrete hanging at 11 corners is the first to be used to control the support. Floor force is used for phase-constrained external field cast concrete when hanging in one of the thicknesses of the continuous single or double function. The width of the steel bar with a width of 5 meters is 1.25 meters,) X 20〇KG (steel X 1/3 (unit thickness), the grouting gap around the construction site is 3 6 rows of grouting, the horizontal extension of the excavation surface of the cutoff site is waterproofed and blocked for installation 3 and 4 and the waterproof bomb enclosure is cast with continuous soil 3, this 1 is connected to the outer wall with a combination of 1 and the total thickness. The first function is to control the construction of the land. Wall-type continuous wall 1 continuous wall 2, continuation wall with tapered edge system next to two adjacent soil-shaped soil continuous wall 3 injection wall 1 (its design can be Using the same scale lifting equipment, the lifting cage 'can be hoisted at the same depth. The formula is: 5M (rebar weight / m3) = T (預鑄) X 240 0KG (RC / m3) It can be set in advance to soften the water into the wall for grouting. This is the direction of continuous continuous concrete. 1 Example: field cast concrete pressure material, 3 5 This is the second continuous wall guide groove 1 1 The first waterproof function θ built ground partition 12 can be T or I. It is the same as the continuous wall excavator 預鑄 type continuous wall 1 when cast in. The mixed continuous wall guide groove is tapered to avoid the need to set a support length here. It should not be too large, and the tapered shape should continue to the wall 1 for accuracy of its continuous wall 1; the second function can enter the flow range, unlike traditional Λ

Page 8 4 Ϊ8274 V. Description of the invention (6) The field cast concrete continuous wall will lead to a large groove area when it is poured into the broken road 钂 +, resulting in field 7 4 /, 1 easy to control, the field cast concrete of the present invention is continuous In addition to the water effect of wall 3, there is still a continuous continuous wall 丄 concavo-convex groove around the stable ground to be suspended into the 預鑄: continuous wall guide channel, 埽 埽 ′, after the continuous wall 1, concrete is poured into the outside The front stiffener 31 makes Horiba cast a hybrid continuous wall ... more solid. Second, $ water. iConcrete continuous wall guide trench for in-situ support, slender person > Electric man continuous wall 2, combined with concave and convex shape and using concrete material ^ and 'to ensure that the support is straight, to control the balance of deep excavated soil 'The concrete concrete continuous wall 2 for support is under the excavation bottom surface; it should be integrated as a whole. .η, watch clock, see ^^: The third stomach is the supporting concrete j-continuous wall section of the present invention, (A- “B — Β section). For example, the pre-soiled continuous wall 2 of the inner branch building is Use U support to build a continuous wall around the slab, and dig the support at the joints of the continuous and continuous wall i.

The continuous wall 2 is in the shape of a groove, and the branch building will be filled with concrete. The continuation of wall 2 will be completed and then the excavation will be carried out. During the excavation, J will continue to build the wall and 2 land; two pre-pound concrete continuous walls will be used. Mining =: Closing screws 3 2 knots. Although it is gradually deepened, the lateral earth pressure will be offset by the concrete material screws 32 in the form of shear force, and the overall lateral earth pressure dumping force and earth pressure balance force will be excavated by the supporting concrete continuous wall 2 The vertical reaction force under the bottom surface and the horizontal reaction force corresponding to the integrity of the supporting concrete continuous wall 2 are counterbalanced. In general, deep underground excavation is used to prevent the bottom of the excavation *

Page 9 418274 V. Description of the invention (7) The uplift or sand words can provide extra force. Strengthen concrete when building concrete. Due to the support, excavation was carried out in the excavation to the pre-floor version. 4 The screws were completely removed. 3 The concrete was concretely bonded to 6. The concrete was miscast. 3, Continued wall 1 can be suspended, and the floating wall 1 can be guided to the outside of the sieve mud cast concrete, and the surrounding area is reinforced. The continuous wall 2 The water concrete beam 2 After setting the depth, after completion, the continuous wall 2 and continuous wall 2 will be pumped for preliminary construction. The balance adjustment section can be continued without the wall 2 (figure 5). Version 1 Pre-soil around the construction site is settled in the trench and poured above 1 3 Continued wall 3 Quality plate improvement measures Use concrete mixing continuous wall 1 within a flat space 2, and adjust the concrete group with pre-soil continuous wall 2 Then it can be used for temporary support from bottom to top. It can also be used to leave holes in the four floors of the floor version. It is not considered to support the concrete. If it is removed, it can be used as the wall of the present invention. 1. It can be directly used in the partition version 3. _ Kongzuo Casting Plant Casting Mixed Guide Groove Bottom Field Prayer Concrete Paul ", the number of the continuous wall of the contact unit has a site modified by soil excavation sequence to turn screw composition Excavation engagement screw 32 is applied layer by layer to build concrete floor 預鑄 compartment for use. Combining the problems, the continuous wall of reinforced concrete and post-concrete soil needs to be refurbished as a cross-section view of the structure of the permanent compartment as the structural body. 12 The bottom is designed with a proper design. Liang's support for the vertical reaction position of the present invention is fixed from top to bottom, and then put into the combined work before being fixed. Version 4, the upper and lower continuous wall 2 can be used for support. It can be used for support. The building version 4 2 is used for elevation control. . As shown in the figure, the inner wall will be screened on the first to second floor when the trench is connected to the trench. The continuous concrete will stop for 3 minutes.

Page 10, 4182 74 V. Description of the invention (8)

According to the foregoing description, the invention has the advantage of making the foundation easy to construct and use. 'Concrete continuous wall for supporting materials' not only has stable quality and mass production and reduces costs. It can also be reused for dismantled concrete continuous walls for support. It will waste resources; due to the three waterproof functions of the cast-in-place hybrid retaining water-repellent continuous wall, there is no need to construct the inner wall to stop water ', which can save structural costs and leakage costs, and because there is no intermediate vertical steel column and horizontal steel support, In addition to saving a lot of steel branch costs and excavation costs, it is also impossible to estimate the intangible benefits that can be shortened due to the ease of construction. Comply with the statutory requirements of the invention patent application

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Claims (1)

418274 6. Scope of patent application—The construction method of the cast-in-place cast hybrid retaining water-repellent continuous wall structure is to first excavate the guide grooves around the construction site and hang the 預鑄 -type continuous wall in the guide groove first. Adhere to the excavation side and fill the gap between the outside of the concrete continuous wall and the earth pressure side to cast the concrete continuous wall in the peripheral field on site; complete the excavation at the bottom of the construction site to improve the temporary support concrete concrete The vertical reaction capacity at the bottom of the continuous wall, and then excavate the vertical or horizontal or cross-conducting continuous wall to become a temporary support during the excavation of the outer side of the construction site. The Yu-type continuous wall is combined with the temporary support materials in the construction site by screws. At the same time, it is supported by the combination of the concrete concrete screw combination method to form a whole with its corresponding edge (office) to enhance the horizontal reaction capacity of the temporary part for the dumping force and earth pressure balance force; open the plate, and then layer by layer Build the floor upwards, loosen the temporary support, use concrete coagulation, 'remove the support between floor versions, and use pre-removal' for refurbishment and reserve it for the error adjustment section in the floor. The structure body is used as a permanent compartment, such as the groove of the first patent application scope, and is suspended into the support. Concrete mixing cast-in-place continuous wall is used in the excavation of the soil. The continuous walls between the concrete continuous walls offset their lateral earth pressure with their shear resistance. The continuous walls were pre-concrete into a stepped shape during the excavation process, and the concrete continuous wall was used to support the concrete concrete wall at the end of the excavation. The overall lateral earth pressure resisting deep excavation can be built to the completion surface, and the ground floor can be built. After the completion of the upper and lower floors, the continuous wall of concrete and screw-cast concrete continuous wall can be constructed layer by layer, and the support is suspended layer by layer. Concrete concrete continuous wall with concrete concrete continuous wall can also be left as wall. Horiba cast hybrid soil retaining Page 12 Surface 6 3 4 5 4182 74 ———— Applicable to the patent Fan Yuan The construction method of the water-speed continuous wall structure, the shape of which is the same as the electric-type continuous wall of the factory, and the edges are like long, t, and thickness. • As described in item f of the patent scope, please refer to the method for j water-speed continued wall structure construction, 1 from, casting and mixing. -Type retaining wall, vertical wall on the excavation surface == The pre-scale water in the guide channel is in a state of incomplete and incomplete close cooperation. It is used to fill the empty space. Irrigation and polymerization are used to prevent groundwater from seeping into the wall. The vertical or horizontal nodes on the outside of this distressed continuous wall adopt the function of pre-binding ±-Ding Zhi sticks waterproof barrier facilities such as filling concrete Lili version 'baoli version' Screws and cut-resistant materials, these two waterproof functions; the outer side of the concrete type continuous wall and the earth pressure side gap field cast concrete continuous wall, this is the first channel waterproof function. (Stiffness), can be divided into single with waterproof function or both waterproof and lateral earth pressure resistance function; each ^ ground around the 預鑄 -type continuous wall on the outside are connected to the partition plate, can be τ or 1 ^ shape and结合 The combined thickness of the concrete continuous wall is the same as the thickness of the continuous wall. ^ The thickness of the digging machine has the function of positioning accuracy when the continuous wall is hoisted and the function of limiting the flow range of the continuous wall of the field casting. Remove the floating mud from the guide groove. '' The patent application for the construction method of the prayer praying site and the continuous waterproof wall structure described in Taowei No. 1 in the patent application. The 连续 type continuous wall filled in at the corners of the outer guide grooves around the construction site may be Shaped. According to the construction method of the Horiba cast hybrid soil-impact continuous water wall structure described in item 1 of the scope of the patent application, the peripheral guide grooves around the construction site are internal Page 13 4182 74 6. The patent application range is suspended between the concrete continuous wall and the soil movement force side, and the strength of the hybrid continuous wall 6 · If the nails of the water continuous wall structure in the patent application range are combined, the strength can be seen Reinforced concrete is installed in the horizontal space of continuous wall. 7 · If the continuous wall of the continuous wall structure of the patent application is suspended, 8 * If the continuous wall structure of the patent application includes reinforced concrete, The scope of the patent application scope is the continuous wall thickness of any excavation and construction machine. The thickness of the continuous wall of any excavation and construction machine is the same as that of the guide. A steel reperfusion field casting degree and waterproof work are added. Around the ground, use the method described in item 1 of the wood material, which can be used in the method described in item 1 of the groove step, and the extra materials. The method described in item 1 has its own, and the trench concrete excavation can be reinforced with concrete. Horiba casting continuous wall, supporting the state of the ladder when supporting the cast iron with combination screws Improve the pre-mixed type of lintel continuous wall single joint. Hybrid 預鑄 〇 Hybrid Wall Material Hybrid Guide Groove Retaining Width. Outside the wall Foundry casting Retaining defense Combined screw concrete Element frame Retaining defense Concrete Retaining defense Combination Impact prevention Unrestricted Waterproof connection Page 14